source: git/src/gfxcore.cc @ 1b164a0

RELEASE/1.2debug-cidebug-ci-sanitisersfaster-cavernloglog-selectstereostereo-2025walls-datawalls-data-hanging-as-warningwarn-only-for-hanging-survey
Last change on this file since 1b164a0 was 1b164a0, checked in by Olly Betts <olly@…>, 14 years ago

src/gfxcore.cc: Apply COLOUR_KEY_OFFSET_X by moving the point where
we plot the key rather than including it in the calculations of the
key's coordinates.

git-svn-id: file:///home/survex-svn/survex/trunk@3780 4b37db11-9a0c-4f06-9ece-9ab7cdaee568

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File size: 80.3 KB
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[5809313]1//
[156dc16]2//  gfxcore.cc
[5809313]3//
[33b2094]4//  Core drawing code for Aven.
[5809313]5//
[b72f4b5]6//  Copyright (C) 2000-2003,2005,2006 Mark R. Shinwell
[091069f]7//  Copyright (C) 2001-2003,2004,2005,2006,2007,2010,2011 Olly Betts
[887c26e]8//  Copyright (C) 2005 Martin Green
[5809313]9//
10//  This program is free software; you can redistribute it and/or modify
11//  it under the terms of the GNU General Public License as published by
12//  the Free Software Foundation; either version 2 of the License, or
13//  (at your option) any later version.
14//
15//  This program is distributed in the hope that it will be useful,
16//  but WITHOUT ANY WARRANTY; without even the implied warranty of
17//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18//  GNU General Public License for more details.
19//
20//  You should have received a copy of the GNU General Public License
21//  along with this program; if not, write to the Free Software
[5940815]22//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
[5809313]23//
24
[cbfa50d]25#ifdef HAVE_CONFIG_H
26#include <config.h>
27#endif
28
[892a40c]29#include <assert.h>
[7aa15c0]30#include <float.h>
31
[7a89dc2]32#include "aven.h"
[1ee204e]33#include "date.h"
[5809313]34#include "gfxcore.h"
[137bf99]35#include "mainfrm.h"
[93c3f97]36#include "message.h"
[7a89dc2]37#include "useful.h"
[ce403f1]38#include "printwx.h"
[5876fcb]39#include "guicontrol.h"
[6a4cdcb6]40#include "moviemaker.h"
[8000d8f]41
42#include <wx/confbase.h>
43#include <wx/image.h>
[5809313]44
[db4b33c]45#define MAX(a, b) ((a) > (b) ? (a) : (b))
[003d953]46#define MAX3(a, b, c) ((a) > (b) ? MAX(a, c) : MAX(b, c))
[5809313]47
[3d00693]48// Values for m_SwitchingTo
49#define PLAN 1
50#define ELEVATION 2
[3ddd351]51#define NORTH 3
52#define EAST 4
53#define SOUTH 5
54#define WEST 6
[3d00693]55
[c61aa79]56// Any error value higher than this is clamped to this.
57#define MAX_ERROR 12.0
58
[86cdcf2]59// How many bins per letter height to use when working out non-overlapping
60// labels.
61const unsigned int QUANTISE_FACTOR = 2;
62
[0e69efe]63#include "avenpal.h"
64
[6606406]65static const int COMPASS_OFFSET_X = 60;
66static const int COMPASS_OFFSET_Y = 80;
67static const int INDICATOR_BOX_SIZE = 60;
[c300a04]68static const int INDICATOR_GAP = 2;
[6606406]69static const int INDICATOR_MARGIN = 5;
70static const int INDICATOR_OFFSET_X = 15;
[c300a04]71static const int INDICATOR_OFFSET_Y = 15;
[fe665c4]72static const int INDICATOR_RADIUS = INDICATOR_BOX_SIZE / 2 - INDICATOR_MARGIN;
[dde4fe7]73static const int CLINO_OFFSET_X = 6 + INDICATOR_OFFSET_X +
[429465a]74                                  INDICATOR_BOX_SIZE + INDICATOR_GAP;
[97ea48d]75static const int COLOUR_KEY_OFFSET_X = 16;
76static const int COLOUR_KEY_EXTRA_LEFT_MARGIN = 2;
77static const int COLOUR_KEY_BLOCK_WIDTH = 20;
78static const int COLOUR_KEY_BLOCK_HEIGHT = 16;
79static const int COLOUR_KEY_MARGIN = 6;
80static const int COLOUR_KEY_OFFSET_Y = 16 + COLOUR_KEY_MARGIN;
[b56df45]81static const int TICK_LENGTH = 4;
[42adb19]82static const int SCALE_BAR_OFFSET_X = 15;
83static const int SCALE_BAR_OFFSET_Y = 12;
84static const int SCALE_BAR_HEIGHT = 12;
[aa048c3]85
86static const gla_colour TEXT_COLOUR = col_GREEN;
87static const gla_colour HERE_COLOUR = col_WHITE;
88static const gla_colour NAME_COLOUR = col_GREEN;
[33b2094]89
[39e460c9]90#define HITTEST_SIZE 20
91
[dde4fe7]92// vector for lighting angle
93static const Vector3 light(.577, .577, .577);
94
[c6d95d8]95BEGIN_EVENT_TABLE(GfxCore, wxGLCanvas)
[5809313]96    EVT_PAINT(GfxCore::OnPaint)
97    EVT_LEFT_DOWN(GfxCore::OnLButtonDown)
98    EVT_LEFT_UP(GfxCore::OnLButtonUp)
99    EVT_MIDDLE_DOWN(GfxCore::OnMButtonDown)
100    EVT_MIDDLE_UP(GfxCore::OnMButtonUp)
101    EVT_RIGHT_DOWN(GfxCore::OnRButtonDown)
102    EVT_RIGHT_UP(GfxCore::OnRButtonUp)
[34d8d1a]103    EVT_MOUSEWHEEL(GfxCore::OnMouseWheel)
[5809313]104    EVT_MOTION(GfxCore::OnMouseMove)
[887c26e]105    EVT_LEAVE_WINDOW(GfxCore::OnLeaveWindow)
[5809313]106    EVT_SIZE(GfxCore::OnSize)
[a8e9fde]107    EVT_IDLE(GfxCore::OnIdle)
[4b1fc48]108    EVT_CHAR(GfxCore::OnKeyPress)
[5809313]109END_EVENT_TABLE()
110
[5876fcb]111GfxCore::GfxCore(MainFrm* parent, wxWindow* parent_win, GUIControl* control) :
[88707e0b]112    GLACanvas(parent_win, 100),
113    m_Scale(0.0),
114    m_ScaleBarWidth(0),
115    m_Control(control),
116    m_LabelGrid(NULL),
117    m_Parent(parent),
118    m_DoneFirstShow(false),
119    m_TiltAngle(0.0),
120    m_PanAngle(0.0),
121    m_Rotating(false),
122    m_RotationStep(0.0),
123    m_SwitchingTo(0),
124    m_Crosses(false),
125    m_Legs(true),
126    m_Names(false),
127    m_Scalebar(true),
[97ea48d]128    m_ColourKey(true),
[88707e0b]129    m_OverlappingNames(false),
130    m_Compass(true),
131    m_Clino(true),
132    m_Tubes(false),
133    m_XSize(0),
134    m_YSize(0),
135    m_ColourBy(COLOUR_BY_DEPTH),
136    m_HaveData(false),
137    m_MouseOutsideCompass(false),
138    m_MouseOutsideElev(false),
139    m_Surface(false),
140    m_Entrances(false),
141    m_FixedPts(false),
142    m_ExportedPts(false),
143    m_Grid(false),
144    m_BoundingBox(false),
145    m_Degrees(false),
146    m_Metric(false),
147    m_HitTestGridValid(false),
148    m_here_is_temporary(false),
149    presentation_mode(0),
150    pres_reverse(false),
151    pres_speed(0.0),
[75d4a2b]152    movie(NULL),
[88707e0b]153    current_cursor(GfxCore::CURSOR_DEFAULT)
[5809313]154{
[da6c802]155    AddQuad = &GfxCore::AddQuadrilateralDepth;
156    AddPoly = &GfxCore::AddPolylineDepth;
[5627cbb]157    wxConfigBase::Get()->Read(wxT("metric"), &m_Metric, true);
158    wxConfigBase::Get()->Read(wxT("degrees"), &m_Degrees, true);
[d67450e]159    m_here.Invalidate();
160    m_there.Invalidate();
[5809313]161
[39e460c9]162    // Initialise grid for hit testing.
[fa42426]163    m_PointGrid = new list<LabelInfo*>[HITTEST_SIZE * HITTEST_SIZE];
[0e69efe]164
[97ea48d]165    m_Pens = new GLAPen[NUM_COLOUR_BANDS + 1];
166    for (int pen = 0; pen < NUM_COLOUR_BANDS + 1; ++pen) {
[0e69efe]167        m_Pens[pen].SetColour(REDS[pen] / 255.0,
168                              GREENS[pen] / 255.0,
169                              BLUES[pen] / 255.0);
170    }
[5809313]171}
172
173GfxCore::~GfxCore()
174{
175    TryToFreeArrays();
[156dc16]176
[0e69efe]177    delete[] m_Pens;
[39e460c9]178    delete[] m_PointGrid;
[5809313]179}
180
181void GfxCore::TryToFreeArrays()
182{
183    // Free up any memory allocated for arrays.
[81f1266]184    delete[] m_LabelGrid;
185    m_LabelGrid = NULL;
[5809313]186}
187
188//
189//  Initialisation methods
190//
191
[0c6bf5e8]192void GfxCore::Initialise(bool same_file)
[5809313]193{
194    // Initialise the view from the parent holding the survey data.
195
196    TryToFreeArrays();
197
[33b2094]198    m_DoneFirstShow = false;
199
[dfe4454c]200    m_HitTestGridValid = false;
[d35144d]201    m_here_is_temporary = true;
[d67450e]202    m_here.Invalidate();
203    m_there.Invalidate();
[dfe4454c]204
[d35144d]205    m_MouseOutsideCompass = m_MouseOutsideElev = false;
206
[0c6bf5e8]207    if (!same_file) {
208        // Apply default parameters unless reloading the same file.
209        DefaultParameters();
210
211        // Set the initial scale.
212        SetScale(1.0);
213    }
[9eb58d0]214
[125c9ea]215    switch (m_ColourBy) {
216        case COLOUR_BY_DEPTH:
[78c67a6]217            if (m_Parent->GetDepthExtent() == 0.0) {
[125c9ea]218                SetColourBy(COLOUR_BY_NONE);
219            }
220            break;
221        case COLOUR_BY_DATE:
[843ee7b]222            if (!HasDateInformation()) {
[125c9ea]223                SetColourBy(COLOUR_BY_NONE);
224            }
225            break;
[c61aa79]226        case COLOUR_BY_ERROR:
227            if (!m_Parent->HasErrorInformation()) {
228                SetColourBy(COLOUR_BY_NONE);
229            }
230            break;
[bd21214]231    }
232
[9eb58d0]233    m_HaveData = true;
[936a197]234
235    ForceRefresh();
[9eb58d0]236}
237
238void GfxCore::FirstShow()
239{
240    GLACanvas::FirstShow();
241
[8bd480e]242    const unsigned int quantise(GetFontSize() / QUANTISE_FACTOR);
[86cdcf2]243    list<LabelInfo*>::iterator pos = m_Parent->GetLabelsNC();
244    while (pos != m_Parent->GetLabelsNCEnd()) {
245        LabelInfo* label = *pos++;
246        // Calculate and set the label width for use when plotting
247        // none-overlapping labels.
248        int ext_x;
249        GLACanvas::GetTextExtent(label->GetText(), &ext_x, NULL);
[5a24583]250        label->set_width(unsigned(ext_x) / quantise + 1);
[86cdcf2]251    }
252
[9eb58d0]253    SetBackgroundColour(0.0, 0.0, 0.0);
[1690fa9]254
[c5fc8eb]255    // Set diameter of the viewing volume.
256    SetVolumeDiameter(sqrt(sqrd(m_Parent->GetXExtent()) +
257                           sqrd(m_Parent->GetYExtent()) +
258                           sqrd(m_Parent->GetZExtent())));
[9eb58d0]259
260    // Update our record of the client area size and centre.
261    GetClientSize(&m_XSize, &m_YSize);
262
[5809313]263    m_DoneFirstShow = true;
264}
265
266//
267//  Recalculating methods
268//
269
[cd6ea75]270void GfxCore::SetScale(Double scale)
[5047c53]271{
272    // Fill the plot data arrays with screen coordinates, scaling the survey
273    // to a particular absolute scale.
[421b7d2]274
[8b0d57f]275    if (scale < 0.05) {
276        scale = 0.05;
[5f50488]277    } else if (scale > 6144.0) {
278        scale = 6144.0;
[5047c53]279    }
280
[5b7164d]281    m_Scale = scale;
[00a68e0]282    m_HitTestGridValid = false;
[c00c6713]283    if (m_here_is_temporary) SetHere();
[33b2094]284
285    GLACanvas::SetScale(scale);
[d9b3270]286}
287
[f433fda]288bool GfxCore::HasUndergroundLegs() const
289{
290    return m_Parent->HasUndergroundLegs();
291}
292
293bool GfxCore::HasSurfaceLegs() const
294{
295    return m_Parent->HasSurfaceLegs();
296}
297
[50e8979]298bool GfxCore::HasTubes() const
299{
300    return m_Parent->HasTubes();
301}
302
[d9b3270]303void GfxCore::UpdateBlobs()
304{
[d2fcc9b]305    InvalidateList(LIST_BLOBS);
[33b2094]306}
307
[cd6ea75]308//
[5876fcb]309//  Event handlers
[cd6ea75]310//
[5047c53]311
[887c26e]312void GfxCore::OnLeaveWindow(wxMouseEvent& event) {
313    SetHere();
314    ClearCoords();
315}
316
[5876fcb]317void GfxCore::OnIdle(wxIdleEvent& event)
318{
319    // Handle an idle event.
[b72f4b5]320    if (Animate()) {
321        ForceRefresh();
322        event.RequestMore();
323    }
[5809313]324}
325
[b4fe9fb]326void GfxCore::OnPaint(wxPaintEvent&)
[5809313]327{
328    // Redraw the window.
[b462168]329
330    // Get a graphics context.
[1b12b82]331    wxPaintDC dc(this);
[5809313]332
[8abf9bb]333    assert(GetContext());
334
[815eab2]335    if (m_HaveData) {
[01d91fd0]336        // Make sure we're initialised.
337        bool first_time = !m_DoneFirstShow;
338        if (first_time) {
339            FirstShow();
340        }
341
[58dfdd21]342        StartDrawing();
343
344        // Clear the background.
345        Clear();
346
[429465a]347        // Set up model transformation matrix.
348        SetDataTransform();
349
[9eb58d0]350        timer.Start(); // reset timer
[203d2a7]351
[429465a]352        if (m_Legs || m_Tubes) {
353            if (m_Tubes) {
[d67450e]354                EnableSmoothPolygons(true); // FIXME: allow false for wireframe view
[d2fcc9b]355                DrawList(LIST_TUBES);
[429465a]356                DisableSmoothPolygons();
357            }
[e4d40792]358
[50e8979]359            // Draw the underground legs.  Do this last so that anti-aliasing
[e4d40792]360            // works over polygons.
361            SetColour(col_GREEN);
[d2fcc9b]362            DrawList(LIST_UNDERGROUND_LEGS);
[429465a]363        }
[33b2094]364
[429465a]365        if (m_Surface) {
366            // Draw the surface legs.
[d2fcc9b]367            DrawList(LIST_SURFACE_LEGS);
[429465a]368        }
[bbc22ca]369
[db59b02]370        DrawList(LIST_BLOBS);
[6adffadf]371
[f4c5932]372        if (m_BoundingBox) {
373            DrawShadowedBoundingBox();
374        }
[429465a]375        if (m_Grid) {
376            // Draw the grid.
[37d7084]377            DrawList(LIST_GRID);
[429465a]378        }
[b13aee4]379
[86fe6e4]380        if (m_Crosses) {
381            DrawList(LIST_CROSSES);
382        }
383
[429465a]384        SetIndicatorTransform();
385
[6adffadf]386        // Draw station names.
387        if (m_Names /*&& !m_Control->MouseDown() && !Animating()*/) {
388            SetColour(NAME_COLOUR);
389
390            if (m_OverlappingNames) {
391                SimpleDrawNames();
392            } else {
393                NattyDrawNames();
394            }
395        }
396
[6b061db]397        if (MeasuringLineActive()) {
[429465a]398            // Draw "here" and "there".
[f6d8375]399            double hx, hy;
[aa048c3]400            SetColour(HERE_COLOUR);
[d67450e]401            if (m_here.IsValid()) {
[f6d8375]402                double dummy;
[d67450e]403                Transform(m_here, &hx, &hy, &dummy);
[570d62c3]404                if (!m_here_is_temporary) DrawRing(hx, hy);
[429465a]405            }
[d67450e]406            if (m_there.IsValid()) {
[f6d8375]407                double tx, ty;
408                double dummy;
[d67450e]409                Transform(m_there, &tx, &ty, &dummy);
410                if (m_here.IsValid()) {
[429465a]411                    BeginLines();
412                    PlaceIndicatorVertex(hx, hy);
413                    PlaceIndicatorVertex(tx, ty);
[42d23c5]414                    EndLines();
[429465a]415                }
[e633bb1]416                BeginBlobs();
[81aea4e]417                DrawBlob(tx, ty);
[e633bb1]418                EndBlobs();
[429465a]419            }
420        }
[f433fda]421
[429465a]422        // Draw indicators.
[6747314]423        //
424        // There's no advantage in generating an OpenGL list for the
425        // indicators since they change with almost every redraw (and
426        // sometimes several times between redraws).  This way we avoid
427        // the need to track when to update the indicator OpenGL list,
428        // and also avoid indicator update bugs when we don't quite get this
429        // right...
430        DrawIndicators();
[33b2094]431
[58dfdd21]432        FinishDrawing();
433
434        drawtime = timer.Time();
[5997ffdc]435    } else {
436        dc.SetBackground(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWFRAME));
437        dc.Clear();
[58dfdd21]438    }
[5809313]439}
440
[f4c5932]441void GfxCore::DrawBoundingBox()
442{
[d67450e]443    const Vector3 v = 0.5 * m_Parent->GetExtent();
[f4c5932]444
445    SetColour(col_BLUE);
446    EnableDashedLines();
447    BeginPolyline();
[d67450e]448    PlaceVertex(-v.GetX(), -v.GetY(), v.GetZ());
449    PlaceVertex(-v.GetX(), v.GetY(), v.GetZ());
450    PlaceVertex(v.GetX(), v.GetY(), v.GetZ());
451    PlaceVertex(v.GetX(), -v.GetY(), v.GetZ());
452    PlaceVertex(-v.GetX(), -v.GetY(), v.GetZ());
[f4c5932]453    EndPolyline();
454    BeginPolyline();
[d67450e]455    PlaceVertex(-v.GetX(), -v.GetY(), -v.GetZ());
456    PlaceVertex(-v.GetX(), v.GetY(), -v.GetZ());
457    PlaceVertex(v.GetX(), v.GetY(), -v.GetZ());
458    PlaceVertex(v.GetX(), -v.GetY(), -v.GetZ());
459    PlaceVertex(-v.GetX(), -v.GetY(), -v.GetZ());
[f4c5932]460    EndPolyline();
461    BeginLines();
[d67450e]462    PlaceVertex(-v.GetX(), -v.GetY(), v.GetZ());
463    PlaceVertex(-v.GetX(), -v.GetY(), -v.GetZ());
464    PlaceVertex(-v.GetX(), v.GetY(), v.GetZ());
465    PlaceVertex(-v.GetX(), v.GetY(), -v.GetZ());
466    PlaceVertex(v.GetX(), v.GetY(), v.GetZ());
467    PlaceVertex(v.GetX(), v.GetY(), -v.GetZ());
468    PlaceVertex(v.GetX(), -v.GetY(), v.GetZ());
469    PlaceVertex(v.GetX(), -v.GetY(), -v.GetZ());
[f4c5932]470    EndLines();
471    DisableDashedLines();
472}
473
474void GfxCore::DrawShadowedBoundingBox()
475{
[d67450e]476    const Vector3 v = 0.5 * m_Parent->GetExtent();
[f4c5932]477
[f7dae86]478    DrawBoundingBox();
479
[f9ca87c]480    PolygonOffset(true);
[f4c5932]481    SetColour(col_DARK_GREY);
482    BeginQuadrilaterals();
[d67450e]483    PlaceVertex(-v.GetX(), -v.GetY(), -v.GetZ());
484    PlaceVertex(-v.GetX(), v.GetY(), -v.GetZ());
485    PlaceVertex(v.GetX(), v.GetY(), -v.GetZ());
486    PlaceVertex(v.GetX(), -v.GetY(), -v.GetZ());
[f4c5932]487    EndQuadrilaterals();
[f9ca87c]488    PolygonOffset(false);
[f4c5932]489
[d2fcc9b]490    DrawList(LIST_SHADOW);
[f4c5932]491}
492
[c1cf79d]493void GfxCore::DrawGrid()
494{
495    // Draw the grid.
[156dc16]496    SetColour(col_RED);
[c1cf79d]497
498    // Calculate the extent of the survey, in metres across the screen plane.
[b81eee2]499    Double m_across_screen = SurveyUnitsAcrossViewport();
[c1cf79d]500    // Calculate the length of the scale bar in metres.
501    //--move this elsewhere
[c6d95d8]502    Double size_snap = pow(10.0, floor(log10(0.75 * m_across_screen)));
503    Double t = m_across_screen * 0.75 / size_snap;
[c1cf79d]504    if (t >= 5.0) {
[429465a]505        size_snap *= 5.0;
[c1cf79d]506    }
507    else if (t >= 2.0) {
[429465a]508        size_snap *= 2.0;
[c1cf79d]509    }
510
[d67450e]511    Double grid_size = size_snap * 0.1;
[c6d95d8]512    Double edge = grid_size * 2.0;
[d67450e]513    Double grid_z = -m_Parent->GetZExtent() * 0.5 - grid_size;
514    Double left = -m_Parent->GetXExtent() * 0.5 - edge;
515    Double right = m_Parent->GetXExtent() * 0.5 + edge;
516    Double bottom = -m_Parent->GetYExtent() * 0.5 - edge;
517    Double top = m_Parent->GetYExtent() * 0.5 + edge;
[c1cf79d]518    int count_x = (int) ceil((right - left) / grid_size);
519    int count_y = (int) ceil((top - bottom) / grid_size);
[c6d95d8]520    Double actual_right = left + count_x*grid_size;
521    Double actual_top = bottom + count_y*grid_size;
[c1cf79d]522
[b81eee2]523    BeginLines();
524
[c1cf79d]525    for (int xc = 0; xc <= count_x; xc++) {
[429465a]526        Double x = left + xc*grid_size;
[f433fda]527
[b81eee2]528        PlaceVertex(x, bottom, grid_z);
529        PlaceVertex(x, actual_top, grid_z);
[c1cf79d]530    }
531
532    for (int yc = 0; yc <= count_y; yc++) {
[429465a]533        Double y = bottom + yc*grid_size;
[b81eee2]534        PlaceVertex(left, y, grid_z);
535        PlaceVertex(actual_right, y, grid_z);
[c1cf79d]536    }
[b81eee2]537
538    EndLines();
[c1cf79d]539}
540
[1eeb55a]541int GfxCore::GetClinoOffset() const
[c300a04]542{
543    return m_Compass ? CLINO_OFFSET_X : INDICATOR_OFFSET_X;
544}
545
[fe665c4]546void GfxCore::DrawTick(int angle_cw)
[6606406]547{
[fe665c4]548    const Double theta = rad(angle_cw);
549    const wxCoord length1 = INDICATOR_RADIUS;
550    const wxCoord length0 = length1 + TICK_LENGTH;
551    wxCoord x0 = wxCoord(length0 * sin(theta));
552    wxCoord y0 = wxCoord(length0 * cos(theta));
553    wxCoord x1 = wxCoord(length1 * sin(theta));
554    wxCoord y1 = wxCoord(length1 * cos(theta));
[6606406]555
[fe665c4]556    PlaceIndicatorVertex(x0, y0);
557    PlaceIndicatorVertex(x1, y1);
[6606406]558}
559
[d67450e]560void GfxCore::DrawArrow(gla_colour col1, gla_colour col2) {
561    Vector3 p1(0, INDICATOR_RADIUS, 0);
562    Vector3 p2(INDICATOR_RADIUS/2, INDICATOR_RADIUS*-.866025404, 0); // 150deg
563    Vector3 p3(-INDICATOR_RADIUS/2, INDICATOR_RADIUS*-.866025404, 0); // 210deg
564    Vector3 pc(0, 0, 0);
565
566    DrawTriangle(col_LIGHT_GREY, col1, p2, p1, pc);
567    DrawTriangle(col_LIGHT_GREY, col2, p3, p1, pc);
568}
569
[fe665c4]570void GfxCore::DrawCompass() {
571    // Ticks.
572    BeginLines();
573    for (int angle = 315; angle > 0; angle -= 45) {
574        DrawTick(angle);
575    }
576    SetColour(col_GREEN);
577    DrawTick(0);
578    EndLines();
579
580    // Compass background.
581    DrawCircle(col_LIGHT_GREY_2, col_GREY, 0, 0, INDICATOR_RADIUS);
[6606406]582
[fe665c4]583    // Compass arrow.
[d67450e]584    DrawArrow(col_INDICATOR_1, col_INDICATOR_2);
[6606406]585}
586
[fe665c4]587// Draw the non-rotating background to the clino.
588void GfxCore::DrawClinoBack() {
589    BeginLines();
590    for (int angle = 0; angle <= 180; angle += 90) {
591        DrawTick(angle);
592    }
593
594    SetColour(col_GREY);
595    PlaceIndicatorVertex(0, INDICATOR_RADIUS);
596    PlaceIndicatorVertex(0, -INDICATOR_RADIUS);
597    PlaceIndicatorVertex(0, 0);
598    PlaceIndicatorVertex(INDICATOR_RADIUS, 0);
[b56df45]599
[fe665c4]600    EndLines();
601}
602
603void GfxCore::DrawClino() {
604    // Ticks.
605    SetColour(col_GREEN);
[33b2094]606    BeginLines();
[fe665c4]607    DrawTick(0);
[33b2094]608    EndLines();
[fe665c4]609
610    // Clino background.
611    DrawSemicircle(col_LIGHT_GREY_2, col_GREY, 0, 0, INDICATOR_RADIUS, 0);
612
613    // Elevation arrow.
[d67450e]614    DrawArrow(col_INDICATOR_2, col_INDICATOR_1);
[b56df45]615}
616
[6606406]617void GfxCore::Draw2dIndicators()
618{
[76dd228]619    // Draw the compass and elevation indicators.
620
621    const int centre_y = INDICATOR_BOX_SIZE / 2 + INDICATOR_OFFSET_Y;
622
[fe665c4]623    const int comp_centre_x = GetCompassXPosition();
[6606406]624
[eef68f9]625    if (m_Compass && !m_Parent->IsExtendedElevation()) {
[fe665c4]626        // If the user is dragging the compass with the pointer outside the
627        // compass, we snap to 45 degree multiples, and the ticks go white.
[76dd228]628        SetColour(m_MouseOutsideCompass ? col_WHITE : col_LIGHT_GREY_2);
[fe665c4]629        DrawList2D(LIST_COMPASS, comp_centre_x, centre_y, -m_PanAngle);
[c300a04]630    }
[76dd228]631
[fe665c4]632    const int elev_centre_x = GetClinoXPosition();
[76dd228]633
[eef68f9]634    if (m_Clino) {
[fe665c4]635        // If the user is dragging the clino with the pointer outside the
636        // clino, we snap to 90 degree multiples, and the ticks go white.
637        SetColour(m_MouseOutsideElev ? col_WHITE : col_LIGHT_GREY_2);
638        DrawList2D(LIST_CLINO_BACK, elev_centre_x, centre_y, 0);
639        DrawList2D(LIST_CLINO, elev_centre_x, centre_y, 90 + m_TiltAngle);
[c300a04]640    }
[6606406]641
[aa048c3]642    SetColour(TEXT_COLOUR);
[6606406]643
[21958ec]644    static int triple_zero_width = 0;
645    static int height = 0;
646    if (!triple_zero_width) {
[5627cbb]647        GetTextExtent(wxT("000"), &triple_zero_width, &height);
[21958ec]648    }
649    const int y_off = INDICATOR_OFFSET_Y + INDICATOR_BOX_SIZE + height / 2;
[421b7d2]650
[eef68f9]651    if (m_Compass && !m_Parent->IsExtendedElevation()) {
[21958ec]652        wxString str;
653        int value;
[429465a]654        if (m_Degrees) {
[21958ec]655            value = int(m_PanAngle);
[429465a]656        } else {
[21958ec]657            value = int(m_PanAngle * 200.0 / 180.0);
[f433fda]658        }
[5627cbb]659        str.Printf(wxT("%03d"), value);
[21958ec]660        DrawIndicatorText(comp_centre_x - triple_zero_width / 2, y_off, str);
661
[5627cbb]662        str = wmsg(/*Facing*/203);
[21958ec]663        int w;
[d92d282]664        GetTextExtent(str, &w, NULL);
[21958ec]665        DrawIndicatorText(comp_centre_x - w / 2, y_off + height, str);
[c300a04]666    }
667
[eef68f9]668    if (m_Clino) {
[429465a]669        int angle;
[21958ec]670        wxString str;
671        int width;
[429465a]672        if (m_Degrees) {
[21958ec]673            static int zero_zero_width = 0;
674            if (!zero_zero_width) {
[5627cbb]675                GetTextExtent(wxT("00"), &zero_zero_width, NULL);
[21958ec]676            }
677            width = zero_zero_width;
[e577f89]678            angle = int(-m_TiltAngle);
[5627cbb]679            str = angle ? wxString::Format(wxT("%+03d"), angle) : wxT("00");
[429465a]680        } else {
[21958ec]681            width = triple_zero_width;
[e577f89]682            angle = int(-m_TiltAngle * 200.0 / 180.0);
[5627cbb]683            str = angle ? wxString::Format(wxT("%+04d"), angle) : wxT("000");
[f433fda]684        }
[21958ec]685
686        // Adjust horizontal position so the left of the first digit is
687        // always in the same place.
688        int sign_offset = 0;
689        if (angle < 0) {
690            static int minus_width = 0;
691            if (!minus_width) {
[5627cbb]692                GetTextExtent(wxT("-"), &minus_width, NULL);
[21958ec]693            }
694            sign_offset = minus_width + 1;
695        } else if (angle > 0) {
696            static int plus_width = 0;
697            if (!plus_width) {
[5627cbb]698                GetTextExtent(wxT("+"), &plus_width, NULL);
[21958ec]699            }
700            sign_offset = plus_width + 1;
701        }
702        DrawIndicatorText(elev_centre_x - sign_offset - width / 2, y_off, str);
703
[5627cbb]704        str = wmsg(/*Elevation*/118);
[21958ec]705        int w;
[d92d282]706        GetTextExtent(str, &w, NULL);
[21958ec]707        DrawIndicatorText(elev_centre_x - w / 2, y_off + height, str);
[c300a04]708    }
[5809313]709}
710
711void GfxCore::NattyDrawNames()
712{
[84cab34]713    // Draw station names, without overlapping.
[f433fda]714
[d92d282]715    const unsigned int quantise(GetFontSize() / QUANTISE_FACTOR);
716    const unsigned int quantised_x = m_XSize / quantise;
717    const unsigned int quantised_y = m_YSize / quantise;
[84cab34]718    const size_t buffer_size = quantised_x * quantised_y;
[f433fda]719
[69463a0]720    if (!m_LabelGrid) m_LabelGrid = new char[buffer_size];
[5809313]721
[33b2094]722    memset((void*) m_LabelGrid, 0, buffer_size);
[156dc16]723
[33b2094]724    list<LabelInfo*>::const_iterator label = m_Parent->GetLabels();
[36c3285]725    for ( ; label != m_Parent->GetLabelsEnd(); ++label) {
[ece003f]726        if (!((m_Surface && (*label)->IsSurface()) ||
727              (m_Legs && (*label)->IsUnderground()) ||
728              (!(*label)->IsSurface() && !(*label)->IsUnderground()))) {
729            // if this station isn't to be displayed, skip to the next
730            // (last case is for stns with no legs attached)
731            continue;
732        }
733
[f6d8375]734        double x, y, z;
[f433fda]735
[d67450e]736        Transform(**label, &x, &y, &z);
[36c3285]737        // Check if the label is behind us (in perspective view).
[d92d282]738        if (z <= 0.0 || z >= 1.0) continue;
[421b7d2]739
[1eeb55a]740        // Apply a small shift so that translating the view doesn't make which
741        // labels are displayed change as the resulting twinkling effect is
742        // distracting.
[f6d8375]743        double tx, ty, tz;
[d67450e]744        Transform(Vector3(), &tx, &ty, &tz);
[429465a]745        tx -= floor(tx / quantise) * quantise;
746        ty -= floor(ty / quantise) * quantise;
[5809313]747
[f12e8cc]748        tx = x - tx;
749        if (tx < 0) continue;
750
751        ty = y - ty;
752        if (ty < 0) continue;
[421b7d2]753
[f12e8cc]754        unsigned int iy = unsigned(ty) / quantise;
[d92d282]755        if (iy >= quantised_y) continue;
[5a24583]756        unsigned int width = (*label)->get_width();
[f12e8cc]757        unsigned int ix = unsigned(tx) / quantise;
758        if (ix + width >= quantised_x) continue;
[33b2094]759
[f12e8cc]760        char * test = m_LabelGrid + ix + iy * quantised_x;
[d92d282]761        if (memchr(test, 1, width)) continue;
[33b2094]762
[8bd480e]763        x += 3;
764        y -= GetFontSize() / 2;
[d92d282]765        DrawIndicatorText((int)x, (int)y, (*label)->GetText());
766
767        if (iy > QUANTISE_FACTOR) iy = QUANTISE_FACTOR;
768        test -= quantised_x * iy;
[f12e8cc]769        iy += 4;
770        while (--iy && test < m_LabelGrid + buffer_size) {
[d92d282]771            memset(test, 1, width);
772            test += quantised_x;
[429465a]773        }
[84cab34]774    }
[5809313]775}
776
777void GfxCore::SimpleDrawNames()
778{
[a8aedf4]779    // Draw all station names, without worrying about overlaps
[d5de678]780    list<LabelInfo*>::const_iterator label = m_Parent->GetLabels();
[01d91fd0]781    for ( ; label != m_Parent->GetLabelsEnd(); ++label) {
[ece003f]782        if (!((m_Surface && (*label)->IsSurface()) ||
783              (m_Legs && (*label)->IsUnderground()) ||
784              (!(*label)->IsSurface() && !(*label)->IsUnderground()))) {
785            // if this station isn't to be displayed, skip to the next
786            // (last case is for stns with no legs attached)
787            continue;
788        }
789
[f6d8375]790        double x, y, z;
[d67450e]791        Transform(**label, &x, &y, &z);
[d92d282]792
793        // Check if the label is behind us (in perspective view).
794        if (z <= 0) continue;
795
[8bd480e]796        x += 3;
797        y -= GetFontSize() / 2;
[d92d282]798        DrawIndicatorText((int)x, (int)y, (*label)->GetText());
[84cab34]799    }
[5809313]800}
801
802void GfxCore::DrawDepthbar()
803{
[76dd228]804    const int total_block_height =
[97ea48d]805        COLOUR_KEY_BLOCK_HEIGHT * (GetNumColourBands() - 1);
806    const int top = -(total_block_height + COLOUR_KEY_OFFSET_Y);
[1eeb55a]807    int size = 0;
[c300a04]808
[97ea48d]809    wxString* strs = new wxString[GetNumColourBands()];
[63dc4eb]810    int band;
[97ea48d]811    for (band = 0; band < GetNumColourBands(); ++band) {
[78c67a6]812        Double z = m_Parent->GetDepthMin() + m_Parent->GetOffset().GetZ() +
[97ea48d]813                   m_Parent->GetDepthExtent() * band / (GetNumColourBands() - 1);
[429465a]814        strs[band] = FormatLength(z, false);
[203d2a7]815
[a74b014]816        int x;
817        GetTextExtent(strs[band], &x, NULL);
[429465a]818        if (x > size) size = x;
[c300a04]819    }
820
[1b164a0]821    int left = -COLOUR_KEY_BLOCK_WIDTH - COLOUR_KEY_MARGIN - size;
[c300a04]822
[aa048c3]823    DrawRectangle(col_BLACK, col_DARK_GREY,
[97ea48d]824                  left - COLOUR_KEY_MARGIN - COLOUR_KEY_EXTRA_LEFT_MARGIN,
825                  top - COLOUR_KEY_MARGIN * 2,
826                  COLOUR_KEY_BLOCK_WIDTH + size + COLOUR_KEY_MARGIN * 3 +
827                      COLOUR_KEY_EXTRA_LEFT_MARGIN,
828                  total_block_height + COLOUR_KEY_MARGIN*4);
[5809313]829
[76dd228]830    int y = top;
[97ea48d]831    for (band = 0; band < GetNumColourBands() - 1; ++band) {
[76dd228]832        DrawShadedRectangle(GetPen(band), GetPen(band + 1), left, y,
[97ea48d]833                            COLOUR_KEY_BLOCK_WIDTH, COLOUR_KEY_BLOCK_HEIGHT);
834        y += COLOUR_KEY_BLOCK_HEIGHT;
[76dd228]835    }
[dde4fe7]836
[a74b014]837    y = top - GetFontSize() / 2;
[97ea48d]838    left += COLOUR_KEY_BLOCK_WIDTH + 5;
[5809313]839
[76dd228]840    SetColour(TEXT_COLOUR);
[97ea48d]841    for (band = 0; band < GetNumColourBands(); ++band) {
[76dd228]842        DrawIndicatorText(left, y, strs[band]);
[97ea48d]843        y += COLOUR_KEY_BLOCK_HEIGHT;
[84cab34]844    }
[c300a04]845
846    delete[] strs;
[5809313]847}
848
[d4650b3]849void GfxCore::DrawDatebar()
850{
[2043961]851    int total_block_height;
852    int num_bands;
853    if (m_Parent->GetDateExtent() == 0) {
854        num_bands = 1;
[97ea48d]855        total_block_height = COLOUR_KEY_BLOCK_HEIGHT;
[2043961]856    } else {
[97ea48d]857        num_bands = GetNumColourBands();
858        total_block_height = COLOUR_KEY_BLOCK_HEIGHT * (num_bands - 1);
[2043961]859    }
[a74b014]860    if (!m_Parent->HasCompleteDateInfo())
[97ea48d]861        total_block_height += COLOUR_KEY_BLOCK_HEIGHT * 2;
862    const int top = -(total_block_height + COLOUR_KEY_OFFSET_Y);
[a74b014]863
[d4650b3]864    int size = 0;
[a74b014]865    if (!m_Parent->HasCompleteDateInfo()) {
[fbc1d32]866        GetTextExtent(wmsg(/*Undated*/221), &size, NULL);
[a74b014]867    }
[d4650b3]868
[2043961]869    wxString* strs = new wxString[num_bands];
[d4650b3]870    int band;
[2043961]871    for (band = 0; band < num_bands; ++band) {
[1ee204e]872        int y, m, d;
873        int days = m_Parent->GetDateMin();
[2043961]874        if (band)
875            days += m_Parent->GetDateExtent() * band / (num_bands - 1);
[1ee204e]876        ymd_from_days_since_1900(days, &y, &m, &d);
[2043961]877        strs[band].Printf(wxT("%04d-%02d-%02d"), y, m, d);
[d4650b3]878
[a74b014]879        int x;
880        GetTextExtent(strs[band], &x, NULL);
[d4650b3]881        if (x > size) size = x;
882    }
883
[1b164a0]884    int left = -COLOUR_KEY_BLOCK_WIDTH - COLOUR_KEY_MARGIN - size;
[d4650b3]885
886    DrawRectangle(col_BLACK, col_DARK_GREY,
[97ea48d]887                  left - COLOUR_KEY_MARGIN - COLOUR_KEY_EXTRA_LEFT_MARGIN,
888                  top - COLOUR_KEY_MARGIN * 2,
889                  COLOUR_KEY_BLOCK_WIDTH + size + COLOUR_KEY_MARGIN * 3 +
890                      COLOUR_KEY_EXTRA_LEFT_MARGIN,
891                  total_block_height + COLOUR_KEY_MARGIN*4);
[d4650b3]892
893    int y = top;
[a74b014]894
895    if (!m_Parent->HasCompleteDateInfo()) {
896        DrawShadedRectangle(GetSurfacePen(), GetSurfacePen(), left, y,
[97ea48d]897                            COLOUR_KEY_BLOCK_WIDTH, COLOUR_KEY_BLOCK_HEIGHT);
898        y += COLOUR_KEY_BLOCK_HEIGHT * 2;
[a74b014]899    }
900
[2043961]901    if (num_bands == 1) {
902        DrawShadedRectangle(GetPen(0), GetPen(0), left, y,
[97ea48d]903                            COLOUR_KEY_BLOCK_WIDTH, COLOUR_KEY_BLOCK_HEIGHT);
[2043961]904    } else {
905        for (band = 0; band < num_bands - 1; ++band) {
906            DrawShadedRectangle(GetPen(band), GetPen(band + 1), left, y,
[97ea48d]907                                COLOUR_KEY_BLOCK_WIDTH, COLOUR_KEY_BLOCK_HEIGHT);
908            y += COLOUR_KEY_BLOCK_HEIGHT;
[2043961]909        }
[d4650b3]910    }
911
[a74b014]912    y = top - GetFontSize() / 2;
[97ea48d]913    left += COLOUR_KEY_BLOCK_WIDTH + 5;
[d4650b3]914
915    SetColour(TEXT_COLOUR);
[a74b014]916
917    if (!m_Parent->HasCompleteDateInfo()) {
[97ea48d]918        y += COLOUR_KEY_BLOCK_HEIGHT / 2;
[fbc1d32]919        DrawIndicatorText(left, y, wmsg(/*Undated*/221));
[97ea48d]920        y += COLOUR_KEY_BLOCK_HEIGHT * 2 - COLOUR_KEY_BLOCK_HEIGHT / 2;
[a74b014]921    }
922
[2043961]923    if (num_bands == 1) {
[97ea48d]924        y += COLOUR_KEY_BLOCK_HEIGHT / 2;
[2043961]925        DrawIndicatorText(left, y, strs[0]);
926    } else {
927        for (band = 0; band < num_bands; ++band) {
928            DrawIndicatorText(left, y, strs[band]);
[97ea48d]929            y += COLOUR_KEY_BLOCK_HEIGHT;
[2043961]930        }
[d4650b3]931    }
932
933    delete[] strs;
934}
935
[c61aa79]936void GfxCore::DrawErrorbar()
937{
[97ea48d]938    int total_block_height = COLOUR_KEY_BLOCK_HEIGHT * (GetNumColourBands() - 1);
[fbc1d32]939    // Always show the "Not in loop" legend for now (FIXME).
[97ea48d]940    total_block_height += COLOUR_KEY_BLOCK_HEIGHT * 2;
941    const int top = -(total_block_height + COLOUR_KEY_OFFSET_Y);
[a74b014]942
[c61aa79]943    int size = 0;
[fbc1d32]944    GetTextExtent(wmsg(/*Not in loop*/290), &size, NULL);
[c61aa79]945
[97ea48d]946    wxString* strs = new wxString[GetNumColourBands()];
[c61aa79]947    int band;
[97ea48d]948    for (band = 0; band < GetNumColourBands(); ++band) {
949        double E = MAX_ERROR * band / (GetNumColourBands() - 1);
[5627cbb]950        strs[band].Printf(wxT("%.2f"), E);
[c61aa79]951
[a74b014]952        int x;
953        GetTextExtent(strs[band], &x, NULL);
[c61aa79]954        if (x > size) size = x;
955    }
956
[1b164a0]957    int left = -COLOUR_KEY_BLOCK_WIDTH - COLOUR_KEY_MARGIN - size;
[c61aa79]958
959    DrawRectangle(col_BLACK, col_DARK_GREY,
[97ea48d]960                  left - COLOUR_KEY_MARGIN - COLOUR_KEY_EXTRA_LEFT_MARGIN,
961                  top - COLOUR_KEY_MARGIN * 2,
962                  COLOUR_KEY_BLOCK_WIDTH + size + COLOUR_KEY_MARGIN * 3 +
963                      COLOUR_KEY_EXTRA_LEFT_MARGIN,
964                  total_block_height + COLOUR_KEY_MARGIN*4);
[c61aa79]965
966    int y = top;
[a74b014]967
968    DrawShadedRectangle(GetSurfacePen(), GetSurfacePen(), left, y,
[97ea48d]969            COLOUR_KEY_BLOCK_WIDTH, COLOUR_KEY_BLOCK_HEIGHT);
970    y += COLOUR_KEY_BLOCK_HEIGHT * 2;
[a74b014]971
[97ea48d]972    for (band = 0; band < GetNumColourBands() - 1; ++band) {
[c61aa79]973        DrawShadedRectangle(GetPen(band), GetPen(band + 1), left, y,
[97ea48d]974                            COLOUR_KEY_BLOCK_WIDTH, COLOUR_KEY_BLOCK_HEIGHT);
975        y += COLOUR_KEY_BLOCK_HEIGHT;
[c61aa79]976    }
977
[a74b014]978    y = top - GetFontSize() / 2;
[97ea48d]979    left += COLOUR_KEY_BLOCK_WIDTH + 5;
[c61aa79]980
981    SetColour(TEXT_COLOUR);
[a74b014]982
[97ea48d]983    y += COLOUR_KEY_BLOCK_HEIGHT / 2;
[fbc1d32]984    DrawIndicatorText(left, y, wmsg(/*Not in loop*/290));
[97ea48d]985    y += COLOUR_KEY_BLOCK_HEIGHT * 2 - COLOUR_KEY_BLOCK_HEIGHT / 2;
[a74b014]986
[97ea48d]987    for (band = 0; band < GetNumColourBands(); ++band) {
[c61aa79]988        DrawIndicatorText(left, y, strs[band]);
[97ea48d]989        y += COLOUR_KEY_BLOCK_HEIGHT;
[c61aa79]990    }
991
992    delete[] strs;
993}
994
[c6d95d8]995wxString GfxCore::FormatLength(Double size_snap, bool scalebar)
[ac537e9]996{
997    wxString str;
[1eb2590]998    bool negative = (size_snap < 0.0);
999
1000    if (negative) {
[429465a]1001        size_snap = -size_snap;
[1eb2590]1002    }
[ac537e9]1003
1004    if (size_snap == 0.0) {
[5627cbb]1005        str = wxT("0");
[7a89dc2]1006    } else if (m_Metric) {
[ac537e9]1007#ifdef SILLY_UNITS
[429465a]1008        if (size_snap < 1e-12) {
[5627cbb]1009            str.Printf(wxT("%.3gpm"), size_snap * 1e12);
[429465a]1010        } else if (size_snap < 1e-9) {
[5627cbb]1011            str.Printf(wxT("%.fpm"), size_snap * 1e12);
[429465a]1012        } else if (size_snap < 1e-6) {
[5627cbb]1013            str.Printf(wxT("%.fnm"), size_snap * 1e9);
[429465a]1014        } else if (size_snap < 1e-3) {
[5627cbb]1015            str.Printf(wxT("%.fum"), size_snap * 1e6);
[ac537e9]1016#else
[429465a]1017        if (size_snap < 1e-3) {
[5627cbb]1018            str.Printf(wxT("%.3gmm"), size_snap * 1e3);
[421b7d2]1019#endif
[429465a]1020        } else if (size_snap < 1e-2) {
[5627cbb]1021            str.Printf(wxT("%.fmm"), size_snap * 1e3);
[429465a]1022        } else if (size_snap < 1.0) {
[5627cbb]1023            str.Printf(wxT("%.fcm"), size_snap * 100.0);
[429465a]1024        } else if (size_snap < 1e3) {
[5627cbb]1025            str.Printf(wxT("%.fm"), size_snap);
[ac537e9]1026#ifdef SILLY_UNITS
[429465a]1027        } else if (size_snap < 1e6) {
[5627cbb]1028            str.Printf(wxT("%.fkm"), size_snap * 1e-3);
[429465a]1029        } else if (size_snap < 1e9) {
[5627cbb]1030            str.Printf(wxT("%.fMm"), size_snap * 1e-6);
[429465a]1031        } else {
[5627cbb]1032            str.Printf(wxT("%.fGm"), size_snap * 1e-9);
[ac537e9]1033#else
[429465a]1034        } else {
[5627cbb]1035            str.Printf(scalebar ? wxT("%.fkm") : wxT("%.2fkm"), size_snap * 1e-3);
[ac537e9]1036#endif
[429465a]1037        }
[7a89dc2]1038    } else {
[429465a]1039        size_snap /= METRES_PER_FOOT;
1040        if (scalebar) {
1041            Double inches = size_snap * 12;
1042            if (inches < 1.0) {
[5627cbb]1043                str.Printf(wxT("%.3gin"), inches);
[429465a]1044            } else if (size_snap < 1.0) {
[5627cbb]1045                str.Printf(wxT("%.fin"), inches);
[429465a]1046            } else if (size_snap < 5279.5) {
[5627cbb]1047                str.Printf(wxT("%.fft"), size_snap);
[429465a]1048            } else {
[5627cbb]1049                str.Printf(wxT("%.f miles"), size_snap / 5280.0);
[429465a]1050            }
1051        } else {
[5627cbb]1052            str.Printf(wxT("%.fft"), size_snap);
[429465a]1053        }
[ac537e9]1054    }
1055
[5627cbb]1056    return negative ? wxString(wxT("-")) + str : str;
[ac537e9]1057}
1058
[5809313]1059void GfxCore::DrawScalebar()
1060{
[84cab34]1061    // Draw the scalebar.
[eef68f9]1062    if (GetPerspective()) return;
[5809313]1063
[37bc1f5]1064    // Calculate how many metres of survey are currently displayed across the
1065    // screen.
[087bc72]1066    Double across_screen = SurveyUnitsAcrossViewport();
[156dc16]1067
[5f50488]1068    double f = double(GetClinoXPosition() - INDICATOR_BOX_SIZE / 2 - SCALE_BAR_OFFSET_X) / m_XSize;
1069    if (f > 0.75) {
1070        f = 0.75;
1071    } else if (f < 0.5) {
1072        // Stop it getting squeezed to nothing.
1073        // FIXME: In this case we should probably move the compass and clino up
1074        // to make room rather than letting stuff overlap.
1075        f = 0.5;
1076    }
1077
[087bc72]1078    // Convert to imperial measurements if required.
[7a89dc2]1079    Double multiplier = 1.0;
1080    if (!m_Metric) {
[429465a]1081        across_screen /= METRES_PER_FOOT;
1082        multiplier = METRES_PER_FOOT;
[5f50488]1083        if (across_screen >= 5280.0 / f) {
[429465a]1084            across_screen /= 5280.0;
1085            multiplier *= 5280.0;
1086        }
[7a89dc2]1087    }
[5757725]1088
[7a89dc2]1089    // Calculate the length of the scale bar.
[5f50488]1090    Double size_snap = pow(10.0, floor(log10(f * across_screen)));
1091    Double t = across_screen * f / size_snap;
[98860c5]1092    if (t >= 5.0) {
[429465a]1093        size_snap *= 5.0;
[7a89dc2]1094    } else if (t >= 2.0) {
[429465a]1095        size_snap *= 2.0;
[98860c5]1096    }
1097
[7a89dc2]1098    if (!m_Metric) size_snap *= multiplier;
1099
[84cab34]1100    // Actual size of the thing in pixels:
[087bc72]1101    int size = int((size_snap / SurveyUnitsAcrossViewport()) * m_XSize);
[e2c1671]1102    m_ScaleBarWidth = size;
[421b7d2]1103
[5809313]1104    // Draw it...
[e2c1671]1105    const int end_y = SCALE_BAR_OFFSET_Y + SCALE_BAR_HEIGHT;
[5809313]1106    int interval = size / 10;
1107
[aa048c3]1108    gla_colour col = col_WHITE;
[5809313]1109    for (int ix = 0; ix < 10; ix++) {
[e2c1671]1110        int x = SCALE_BAR_OFFSET_X + int(ix * ((Double) size / 10.0));
[421b7d2]1111
[e2c1671]1112        DrawRectangle(col, col, x, end_y, interval + 2, SCALE_BAR_HEIGHT);
[421b7d2]1113
[aa048c3]1114        col = (col == col_WHITE) ? col_GREY : col_WHITE;
[5809313]1115    }
1116
[84cab34]1117    // Add labels.
[ac537e9]1118    wxString str = FormatLength(size_snap);
[84cab34]1119
[1eeb55a]1120    int text_width, text_height;
[56da40e]1121    GetTextExtent(str, &text_width, &text_height);
[8bd480e]1122    const int text_y = end_y - text_height + 1;
1123    SetColour(TEXT_COLOUR);
[5627cbb]1124    DrawIndicatorText(SCALE_BAR_OFFSET_X, text_y, wxT("0"));
[8bd480e]1125    DrawIndicatorText(SCALE_BAR_OFFSET_X + size - text_width, text_y, str);
[5809313]1126}
[56da40e]1127
[2072157]1128bool GfxCore::CheckHitTestGrid(const wxPoint& point, bool centre)
[2effbf1]1129{
[0874c07e]1130    if (Animating()) return false;
1131
[203d2a7]1132    if (point.x < 0 || point.x >= m_XSize ||
[429465a]1133        point.y < 0 || point.y >= m_YSize) {
1134        return false;
[137e31b]1135    }
[421b7d2]1136
[156f645]1137    SetDataTransform();
[00a68e0]1138
[69463a0]1139    if (!m_HitTestGridValid) CreateHitTestGrid();
[fa42426]1140
[2effbf1]1141    int grid_x = (point.x * (HITTEST_SIZE - 1)) / m_XSize;
1142    int grid_y = (point.y * (HITTEST_SIZE - 1)) / m_YSize;
[137e31b]1143
[fa42426]1144    LabelInfo *best = NULL;
1145    int dist_sqrd = 25;
[2effbf1]1146    int square = grid_x + grid_y * HITTEST_SIZE;
[fa42426]1147    list<LabelInfo*>::iterator iter = m_PointGrid[square].begin();
[00a68e0]1148
[fa42426]1149    while (iter != m_PointGrid[square].end()) {
[429465a]1150        LabelInfo *pt = *iter++;
[fa42426]1151
[f6d8375]1152        double cx, cy, cz;
[00a68e0]1153
[d67450e]1154        Transform(*pt, &cx, &cy, &cz);
[00a68e0]1155
[429465a]1156        cy = m_YSize - cy;
[00a68e0]1157
[429465a]1158        int dx = point.x - int(cx);
1159        int ds = dx * dx;
1160        if (ds >= dist_sqrd) continue;
1161        int dy = point.y - int(cy);
[fa42426]1162
[429465a]1163        ds += dy * dy;
1164        if (ds >= dist_sqrd) continue;
[f433fda]1165
[429465a]1166        dist_sqrd = ds;
1167        best = pt;
[f433fda]1168
[429465a]1169        if (ds == 0) break;
[2effbf1]1170    }
[f433fda]1171
[fa42426]1172    if (best) {
[6b061db]1173        m_Parent->ShowInfo(best);
[429465a]1174        if (centre) {
[e67ed1b]1175            // FIXME: allow Ctrl-Click to not set there or something?
[82c3731]1176            CentreOn(*best);
[fc768a8]1177            WarpPointer(m_XSize / 2, m_YSize / 2);
[82c3731]1178            SetThere(*best);
[429465a]1179            m_Parent->SelectTreeItem(best);
1180        }
[e67ed1b]1181    } else {
1182        // Left-clicking not on a survey cancels the measuring line.
[0633bcc]1183        if (centre) {
1184            ClearTreeSelection();
1185        } else {
[6b061db]1186            m_Parent->ShowInfo(best);
[f6d8375]1187            double x, y, z;
[0633bcc]1188            ReverseTransform(point.x, m_YSize - point.y, &x, &y, &z);
1189            SetHere(Point(Vector3(x, y, z)));
[c00c6713]1190            m_here_is_temporary = true;
[0633bcc]1191        }
[2effbf1]1192    }
[203d2a7]1193
1194    return best;
[2effbf1]1195}
1196
[5876fcb]1197void GfxCore::OnSize(wxSizeEvent& event)
[5809313]1198{
[5876fcb]1199    // Handle a change in window size.
[bbc22ca]1200
[5876fcb]1201    wxSize size = event.GetSize();
[5809313]1202
[78beaf1]1203    if (size.GetWidth() <= 0 || size.GetHeight() <= 0) {
[0580c6a]1204        // Before things are fully initialised, we sometimes get a bogus
1205        // resize message...
[6ef8bd73]1206        // FIXME have changes in MainFrm cured this?  It still happens with
[880b954]1207        // 1.0.32 and wxGTK 2.5.2 (load a file from the command line).
1208        // With 1.1.6 and wxGTK 2.4.2 we only get negative sizes if MainFrm
[78beaf1]1209        // is resized such that the GfxCore window isn't visible.
1210        //printf("OnSize(%d,%d)\n", size.GetWidth(), size.GetHeight());
[0580c6a]1211        return;
1212    }
[b72f4b5]1213
1214    wxGLCanvas::OnSize(event);
1215
[5876fcb]1216    m_XSize = size.GetWidth();
1217    m_YSize = size.GetHeight();
[39e460c9]1218
[5876fcb]1219    if (m_DoneFirstShow) {
[81f1266]1220        TryToFreeArrays();
[6ebc0ce]1221
[69463a0]1222        m_HitTestGridValid = false;
[33b2094]1223
[d67450e]1224        ForceRefresh();
[5809313]1225    }
1226}
1227
[de7a879]1228void GfxCore::DefaultParameters()
[5809313]1229{
[33b2094]1230    // Set default viewing parameters.
[b462168]1231
[f433fda]1232    m_Surface = false;
1233    if (!m_Parent->HasUndergroundLegs()) {
1234        if (m_Parent->HasSurfaceLegs()) {
1235            // If there are surface legs, but no underground legs, turn
1236            // surface surveys on.
1237            m_Surface = true;
1238        } else {
1239            // If there are no legs (e.g. after loading a .pos file), turn
1240            // crosses on.
1241            m_Crosses = true;
1242        }
[b462168]1243    }
1244
[714daae]1245    m_PanAngle = 0.0;
[eef68f9]1246    if (m_Parent->IsExtendedElevation()) {
1247        m_TiltAngle = 0.0;
1248    } else {
1249        m_TiltAngle = 90.0;
[b462168]1250    }
[714daae]1251
[08253d9]1252    SetRotation(m_PanAngle, m_TiltAngle);
[d67450e]1253    SetTranslation(Vector3());
[33b2094]1254
[e577f89]1255    m_RotationStep = 30.0;
[5809313]1256    m_Rotating = false;
[3d00693]1257    m_SwitchingTo = 0;
[fe444b8]1258    m_Entrances = false;
1259    m_FixedPts = false;
1260    m_ExportedPts = false;
[c1cf79d]1261    m_Grid = false;
[f4c5932]1262    m_BoundingBox = false;
[33b2094]1263    m_Tubes = false;
[1eeb55a]1264    if (GetPerspective()) TogglePerspective();
[de7a879]1265}
[5809313]1266
[de7a879]1267void GfxCore::Defaults()
1268{
1269    // Restore default scale, rotation and translation parameters.
1270    DefaultParameters();
[8b0d57f]1271    SetScale(1.0);
[ba358fc]1272
1273    // Invalidate all the cached lists.
1274    GLACanvas::FirstShow();
1275
[fa42426]1276    ForceRefresh();
[5809313]1277}
[84cab34]1278
[5876fcb]1279// return: true if animation occured (and ForceRefresh() needs to be called)
[1690fa9]1280bool GfxCore::Animate()
[5809313]1281{
[2a3d328]1282    if (!Animating()) return false;
1283
1284    // Don't show pointer coordinates while animating.
[4b031c0]1285    // FIXME : only do this when we *START* animating!  Use a static copy
1286    // of the value of "Animating()" last time we were here to track this?
1287    // MainFrm now checks if we're trying to clear already cleared labels
1288    // and just returns, but it might be simpler to check here!
[2a3d328]1289    ClearCoords();
[7c29c976]1290    m_Parent->ShowInfo(NULL);
[5809313]1291
[5876fcb]1292    static double last_t = 0;
[6a4cdcb6]1293    double t;
[75d4a2b]1294    if (movie) {
[aea4f8b]1295        ReadPixels(movie->GetWidth(), movie->GetHeight(), movie->GetBuffer());
[75d4a2b]1296        movie->AddFrame();
[6a4cdcb6]1297        t = 1.0 / 25.0; // 25 frames per second
1298    } else {
1299        t = timer.Time() * 1.0e-3;
1300        if (t == 0) t = 0.001;
1301        else if (t > 1.0) t = 1.0;
1302        if (last_t > 0) t = (t + last_t) / 2;
1303        last_t = t;
1304    }
[5809313]1305
[128fac4]1306    if (presentation_mode == PLAYING && pres_speed != 0.0) {
1307        t *= fabs(pres_speed);
[1690fa9]1308        while (t >= next_mark_time) {
1309            t -= next_mark_time;
[128fac4]1310            this_mark_total = 0;
[58dfdd21]1311            PresentationMark prev_mark = next_mark;
[e577f89]1312            if (prev_mark.angle < 0) prev_mark.angle += 360.0;
1313            else if (prev_mark.angle >= 360.0) prev_mark.angle -= 360.0;
[128fac4]1314            if (pres_reverse)
1315                next_mark = m_Parent->GetPresMark(MARK_PREV);
1316            else
1317                next_mark = m_Parent->GetPresMark(MARK_NEXT);
[1690fa9]1318            if (!next_mark.is_valid()) {
[128fac4]1319                SetView(prev_mark);
[1690fa9]1320                presentation_mode = 0;
[81f1266]1321                delete movie;
1322                movie = NULL;
[1690fa9]1323                break;
1324            }
[58dfdd21]1325
[128fac4]1326            double tmp = (pres_reverse ? prev_mark.time : next_mark.time);
1327            if (tmp > 0) {
1328                next_mark_time = tmp;
[58dfdd21]1329            } else {
[d67450e]1330                double d = (next_mark - prev_mark).magnitude();
[49ce5b0]1331                // FIXME: should ignore component of d which is unseen in
1332                // non-perspective mode?
[8674eea]1333                next_mark_time = sqrd(d / 30.0);
[49ce5b0]1334                double a = next_mark.angle - prev_mark.angle;
1335                if (a > 180.0) {
1336                    next_mark.angle -= 360.0;
1337                    a = 360.0 - a;
1338                } else if (a < -180.0) {
1339                    next_mark.angle += 360.0;
1340                    a += 360.0;
1341                } else {
1342                    a = fabs(a);
1343                }
1344                next_mark_time += sqrd(a / 60.0);
1345                double ta = fabs(next_mark.tilt_angle - prev_mark.tilt_angle);
1346                next_mark_time += sqrd(ta / 60.0);
1347                double s = fabs(log(next_mark.scale) - log(prev_mark.scale));
[8674eea]1348                next_mark_time += sqrd(s / 2.0);
[49ce5b0]1349                next_mark_time = sqrt(next_mark_time);
[8674eea]1350                // was: next_mark_time = max(max(d / 30, s / 2), max(a, ta) / 60);
[49ce5b0]1351                //printf("*** %.6f from (\nd: %.6f\ns: %.6f\na: %.6f\nt: %.6f )\n",
[8674eea]1352                //       next_mark_time, d/30.0, s/2.0, a/60.0, ta/60.0);
1353                if (tmp < 0) next_mark_time /= -tmp;
[58dfdd21]1354            }
[1690fa9]1355        }
1356
1357        if (presentation_mode) {
1358            // Advance position towards next_mark
1359            double p = t / next_mark_time;
1360            double q = 1 - p;
1361            PresentationMark here = GetView();
[d877aa2]1362            if (next_mark.angle < 0) {
[e577f89]1363                if (here.angle >= next_mark.angle + 360.0)
1364                    here.angle -= 360.0;
1365            } else if (next_mark.angle >= 360.0) {
1366                if (here.angle <= next_mark.angle - 360.0)
1367                    here.angle += 360.0;
[d877aa2]1368            }
[8674eea]1369            here.assign(q * here + p * next_mark);
[1690fa9]1370            here.angle = q * here.angle + p * next_mark.angle;
[e577f89]1371            if (here.angle < 0) here.angle += 360.0;
1372            else if (here.angle >= 360.0) here.angle -= 360.0;
[1690fa9]1373            here.tilt_angle = q * here.tilt_angle + p * next_mark.tilt_angle;
[58dfdd21]1374            here.scale = exp(q * log(here.scale) + p * log(next_mark.scale));
[1690fa9]1375            SetView(here);
[128fac4]1376            this_mark_total += t;
[1690fa9]1377            next_mark_time -= t;
1378        }
1379    }
1380
[5876fcb]1381    // When rotating...
1382    if (m_Rotating) {
[1690fa9]1383        TurnCave(m_RotationStep * t);
[5876fcb]1384    }
[5809313]1385
[5876fcb]1386    if (m_SwitchingTo == PLAN) {
[429465a]1387        // When switching to plan view...
[e577f89]1388        TiltCave(90.0 * t);
1389        if (m_TiltAngle == 90.0) {
[429465a]1390            m_SwitchingTo = 0;
1391        }
[1690fa9]1392    } else if (m_SwitchingTo == ELEVATION) {
[429465a]1393        // When switching to elevation view...
[e577f89]1394        if (fabs(m_TiltAngle) < 90.0 * t) {
[429465a]1395            m_SwitchingTo = 0;
1396            TiltCave(-m_TiltAngle);
[1690fa9]1397        } else if (m_TiltAngle < 0.0) {
[e577f89]1398            TiltCave(90.0 * t);
[1690fa9]1399        } else {
[e577f89]1400            TiltCave(-90.0 * t);
[429465a]1401        }
[3ddd351]1402    } else if (m_SwitchingTo) {
1403        int angle = (m_SwitchingTo - NORTH) * 90;
1404        double diff = angle - m_PanAngle;
1405        if (diff < -180) diff += 360;
1406        if (diff > 180) diff -= 360;
1407        double move = 90.0 * t;
1408        if (move >= fabs(diff)) {
1409            TurnCave(diff);
1410            m_SwitchingTo = 0;
1411        } else if (diff < 0) {
1412            TurnCave(-move);
1413        } else {
1414            TurnCave(move);
1415        }
[5876fcb]1416    }
[5809313]1417
[7757a4ed]1418    return true;
[5809313]1419}
[84cab34]1420
[0580c6a]1421// How much to allow around the box - this is because of the ring shape
1422// at one end of the line.
1423static const int HIGHLIGHTED_PT_SIZE = 2; // FIXME: tie in to blob and ring size
1424#define MARGIN (HIGHLIGHTED_PT_SIZE * 2 + 1)
1425void GfxCore::RefreshLine(const Point &a, const Point &b, const Point &c)
[7a89dc2]1426{
[06d367d]1427    // Best of all might be to copy the window contents before we draw the
1428    // line, then replace each time we redraw.
[796d7bf]1429
[5876fcb]1430    // Calculate the minimum rectangle which includes the old and new
1431    // measuring lines to minimise the redraw time
1432    int l = INT_MAX, r = INT_MIN, u = INT_MIN, d = INT_MAX;
[f6d8375]1433    double X, Y, Z;
[d67450e]1434    if (a.IsValid()) {
1435        if (!Transform(a, &X, &Y, &Z)) {
[796d7bf]1436            printf("oops\n");
1437        } else {
1438            int x = int(X);
1439            int y = m_YSize - 1 - int(Y);
1440            l = x - MARGIN;
1441            r = x + MARGIN;
1442            u = y + MARGIN;
1443            d = y - MARGIN;
1444        }
[5876fcb]1445    }
[d67450e]1446    if (b.IsValid()) {
1447        if (!Transform(b, &X, &Y, &Z)) {
[796d7bf]1448            printf("oops\n");
1449        } else {
1450            int x = int(X);
1451            int y = m_YSize - 1 - int(Y);
1452            l = min(l, x - MARGIN);
1453            r = max(r, x + MARGIN);
1454            u = max(u, y + MARGIN);
1455            d = min(d, y - MARGIN);
1456        }
[5876fcb]1457    }
[d67450e]1458    if (c.IsValid()) {
1459        if (!Transform(c, &X, &Y, &Z)) {
[796d7bf]1460            printf("oops\n");
1461        } else {
1462            int x = int(X);
1463            int y = m_YSize - 1 - int(Y);
1464            l = min(l, x - MARGIN);
1465            r = max(r, x + MARGIN);
1466            u = max(u, y + MARGIN);
1467            d = min(d, y - MARGIN);
1468        }
[5876fcb]1469    }
1470    const wxRect R(l, d, r - l, u - d);
1471    Refresh(false, &R);
[7a89dc2]1472}
1473
[5876fcb]1474void GfxCore::SetHere()
[7a89dc2]1475{
[d67450e]1476    if (!m_here.IsValid()) return;
[6b061db]1477    bool line_active = MeasuringLineActive();
[5876fcb]1478    Point old = m_here;
[d67450e]1479    m_here.Invalidate();
[6b061db]1480    if (line_active || MeasuringLineActive())
1481        RefreshLine(old, m_there, m_here);
[7a89dc2]1482}
1483
[82c3731]1484void GfxCore::SetHere(const Point &p)
[c6d95d8]1485{
[6b061db]1486    bool line_active = MeasuringLineActive();
[5876fcb]1487    Point old = m_here;
[82c3731]1488    m_here = p;
[6b061db]1489    if (line_active || MeasuringLineActive())
1490        RefreshLine(old, m_there, m_here);
[c00c6713]1491    m_here_is_temporary = false;
[156dc16]1492}
1493
[5876fcb]1494void GfxCore::SetThere()
[156dc16]1495{
[d67450e]1496    if (!m_there.IsValid()) return;
[5876fcb]1497    Point old = m_there;
[d67450e]1498    m_there.Invalidate();
[0580c6a]1499    RefreshLine(m_here, old, m_there);
[156dc16]1500}
1501
[82c3731]1502void GfxCore::SetThere(const Point &p)
[156dc16]1503{
[5876fcb]1504    Point old = m_there;
[82c3731]1505    m_there = p;
[0580c6a]1506    RefreshLine(m_here, old, m_there);
[156dc16]1507}
1508
[5876fcb]1509void GfxCore::CreateHitTestGrid()
[156dc16]1510{
[00a68e0]1511    // Clear hit-test grid.
[5876fcb]1512    for (int i = 0; i < HITTEST_SIZE * HITTEST_SIZE; i++) {
[429465a]1513        m_PointGrid[i].clear();
[5876fcb]1514    }
[156dc16]1515
[5876fcb]1516    // Fill the grid.
1517    list<LabelInfo*>::const_iterator pos = m_Parent->GetLabels();
1518    list<LabelInfo*>::const_iterator end = m_Parent->GetLabelsEnd();
1519    while (pos != end) {
[429465a]1520        LabelInfo* label = *pos++;
[33b2094]1521
[429465a]1522        if (!((m_Surface && label->IsSurface()) ||
[dc42b8e]1523              (m_Legs && label->IsUnderground()) ||
1524              (!label->IsSurface() && !label->IsUnderground()))) {
1525            // if this station isn't to be displayed, skip to the next
1526            // (last case is for stns with no legs attached)
[429465a]1527            continue;
1528        }
[33b2094]1529
[429465a]1530        // Calculate screen coordinates.
[f6d8375]1531        double cx, cy, cz;
[d67450e]1532        Transform(*label, &cx, &cy, &cz);
[429465a]1533        if (cx < 0 || cx >= m_XSize) continue;
1534        if (cy < 0 || cy >= m_YSize) continue;
[33b2094]1535
[429465a]1536        cy = m_YSize - cy;
[00a68e0]1537
[429465a]1538        // On-screen, so add to hit-test grid...
1539        int grid_x = int((cx * (HITTEST_SIZE - 1)) / m_XSize);
1540        int grid_y = int((cy * (HITTEST_SIZE - 1)) / m_YSize);
[33b2094]1541
[429465a]1542        m_PointGrid[grid_x + grid_y * HITTEST_SIZE].push_back(label);
[33b2094]1543    }
1544
[00a68e0]1545    m_HitTestGridValid = true;
[33b2094]1546}
[c6d95d8]1547
[2a02de2]1548//
[5876fcb]1549//  Methods for controlling the orientation of the survey
[2a02de2]1550//
1551
[5876fcb]1552void GfxCore::TurnCave(Double angle)
[156dc16]1553{
[5876fcb]1554    // Turn the cave around its z-axis by a given angle.
[156dc16]1555
[5876fcb]1556    m_PanAngle += angle;
[e577f89]1557    if (m_PanAngle >= 360.0) {
1558        m_PanAngle -= 360.0;
[5876fcb]1559    } else if (m_PanAngle < 0.0) {
[e577f89]1560        m_PanAngle += 360.0;
[156dc16]1561    }
[33b2094]1562
[00a68e0]1563    m_HitTestGridValid = false;
[c00c6713]1564    if (m_here_is_temporary) SetHere();
[00a68e0]1565
[08253d9]1566    SetRotation(m_PanAngle, m_TiltAngle);
[156dc16]1567}
1568
[5876fcb]1569void GfxCore::TurnCaveTo(Double angle)
[d80805e]1570{
[3ddd351]1571    timer.Start(drawtime);
1572    int new_switching_to = ((int)angle) / 90 + NORTH;
1573    if (new_switching_to == m_SwitchingTo) {
1574        // A second order to switch takes us there right away
1575        TurnCave(angle - m_PanAngle);
1576        m_SwitchingTo = 0;
1577        ForceRefresh();
1578    } else {
1579        m_SwitchingTo = new_switching_to;
1580    }
[d80805e]1581}
1582
[5876fcb]1583void GfxCore::TiltCave(Double tilt_angle)
[156dc16]1584{
[5876fcb]1585    // Tilt the cave by a given angle.
[e577f89]1586    if (m_TiltAngle + tilt_angle > 90.0) {
[08253d9]1587        m_TiltAngle = 90.0;
[e577f89]1588    } else if (m_TiltAngle + tilt_angle < -90.0) {
[08253d9]1589        m_TiltAngle = -90.0;
1590    } else {
1591        m_TiltAngle += tilt_angle;
[d80805e]1592    }
1593
[00a68e0]1594    m_HitTestGridValid = false;
[c00c6713]1595    if (m_here_is_temporary) SetHere();
[00a68e0]1596
[08253d9]1597    SetRotation(m_PanAngle, m_TiltAngle);
[5ffa439]1598}
1599
[5876fcb]1600void GfxCore::TranslateCave(int dx, int dy)
[5ffa439]1601{
[33b2094]1602    AddTranslationScreenCoordinates(dx, dy);
[00a68e0]1603    m_HitTestGridValid = false;
1604
[c00c6713]1605    if (m_here_is_temporary) SetHere();
1606
[33b2094]1607    ForceRefresh();
1608}
[5876fcb]1609
[33b2094]1610void GfxCore::DragFinished()
1611{
[76dd228]1612    m_MouseOutsideCompass = m_MouseOutsideElev = false;
[5876fcb]1613    ForceRefresh();
[2173dbd]1614}
1615
[d877aa2]1616void GfxCore::ClearCoords()
1617{
1618    m_Parent->ClearCoords();
1619}
1620
[5876fcb]1621void GfxCore::SetCoords(wxPoint point)
[fd6e0d5]1622{
[0874c07e]1623    // We can't work out 2D coordinates from a perspective view, and it
1624    // doesn't really make sense to show coordinates while we're animating.
1625    if (GetPerspective() || Animating()) return;
[0a811ab]1626
[5876fcb]1627    // Update the coordinate or altitude display, given the (x, y) position in
1628    // window coordinates.  The relevant display is updated depending on
1629    // whether we're in plan or elevation view.
1630
[f6d8375]1631    double cx, cy, cz;
[5876fcb]1632
[a2b3d62]1633    SetDataTransform();
[887c26e]1634    ReverseTransform(point.x, m_YSize - 1 - point.y, &cx, &cy, &cz);
[5876fcb]1635
[0633bcc]1636    if (ShowingPlan()) {
[d67450e]1637        m_Parent->SetCoords(cx + m_Parent->GetOffset().GetX(),
1638                            cy + m_Parent->GetOffset().GetY());
[0633bcc]1639    } else if (ShowingElevation()) {
[d67450e]1640        m_Parent->SetAltitude(cz + m_Parent->GetOffset().GetZ());
[d479c15]1641    } else {
[429465a]1642        m_Parent->ClearCoords();
[a2b3d62]1643    }
[fd6e0d5]1644}
1645
[1eeb55a]1646int GfxCore::GetCompassXPosition() const
[1fd2edb]1647{
[f433fda]1648    // Return the x-coordinate of the centre of the compass in window
1649    // coordinates.
[1eeb55a]1650    return m_XSize - INDICATOR_OFFSET_X - INDICATOR_BOX_SIZE / 2;
[1fd2edb]1651}
1652
[1eeb55a]1653int GfxCore::GetClinoXPosition() const
[1fd2edb]1654{
[f433fda]1655    // Return the x-coordinate of the centre of the compass in window
1656    // coordinates.
[1eeb55a]1657    return m_XSize - GetClinoOffset() - INDICATOR_BOX_SIZE / 2;
[1fd2edb]1658}
1659
[1eeb55a]1660int GfxCore::GetIndicatorYPosition() const
[dfe4454c]1661{
[f433fda]1662    // Return the y-coordinate of the centre of the indicators in window
1663    // coordinates.
[1eeb55a]1664    return m_YSize - INDICATOR_OFFSET_Y - INDICATOR_BOX_SIZE / 2;
[5876fcb]1665}
[fa42426]1666
[1eeb55a]1667int GfxCore::GetIndicatorRadius() const
[5876fcb]1668{
1669    // Return the radius of each indicator.
[1eeb55a]1670    return (INDICATOR_BOX_SIZE - INDICATOR_MARGIN * 2) / 2;
[5876fcb]1671}
[dfe4454c]1672
[14acdae]1673bool GfxCore::PointWithinCompass(wxPoint point) const
[5876fcb]1674{
[f433fda]1675    // Determine whether a point (in window coordinates) lies within the
1676    // compass.
[e2c1671]1677    if (!ShowingCompass()) return false;
1678
[33b2094]1679    glaCoord dx = point.x - GetCompassXPosition();
1680    glaCoord dy = point.y - GetIndicatorYPosition();
1681    glaCoord radius = GetIndicatorRadius();
[f433fda]1682
[5876fcb]1683    return (dx * dx + dy * dy <= radius * radius);
1684}
[fa42426]1685
[14acdae]1686bool GfxCore::PointWithinClino(wxPoint point) const
[5876fcb]1687{
1688    // Determine whether a point (in window coordinates) lies within the clino.
[e2c1671]1689    if (!ShowingClino()) return false;
1690
[33b2094]1691    glaCoord dx = point.x - GetClinoXPosition();
1692    glaCoord dy = point.y - GetIndicatorYPosition();
1693    glaCoord radius = GetIndicatorRadius();
[f433fda]1694
[5876fcb]1695    return (dx * dx + dy * dy <= radius * radius);
[dfe4454c]1696}
[8000d8f]1697
[14acdae]1698bool GfxCore::PointWithinScaleBar(wxPoint point) const
[5876fcb]1699{
[e2c1671]1700    // Determine whether a point (in window coordinates) lies within the scale
1701    // bar.
1702    if (!ShowingScaleBar()) return false;
[8000d8f]1703
[e2c1671]1704    return (point.x >= SCALE_BAR_OFFSET_X &&
1705            point.x <= SCALE_BAR_OFFSET_X + m_ScaleBarWidth &&
1706            point.y <= m_YSize - SCALE_BAR_OFFSET_Y - SCALE_BAR_HEIGHT &&
1707            point.y >= m_YSize - SCALE_BAR_OFFSET_Y - SCALE_BAR_HEIGHT*2);
[5876fcb]1708}
[8000d8f]1709
[5876fcb]1710void GfxCore::SetCompassFromPoint(wxPoint point)
[8000d8f]1711{
[d877aa2]1712    // Given a point in window coordinates, set the heading of the survey.  If
1713    // the point is outside the compass, it snaps to 45 degree intervals;
1714    // otherwise it operates as normal.
[8000d8f]1715
[5876fcb]1716    wxCoord dx = point.x - GetCompassXPosition();
1717    wxCoord dy = point.y - GetIndicatorYPosition();
1718    wxCoord radius = GetIndicatorRadius();
[7aa15c0]1719
[0580c6a]1720    double angle = deg(atan2(double(dx), double(dy))) - 180.0;
[5876fcb]1721    if (dx * dx + dy * dy <= radius * radius) {
[3ddd351]1722        TurnCave(angle - m_PanAngle);
[429465a]1723        m_MouseOutsideCompass = false;
[e577f89]1724    } else {
[3ddd351]1725        TurnCave(int(angle / 45.0) * 45.0 - m_PanAngle);
[429465a]1726        m_MouseOutsideCompass = true;
[7aa15c0]1727    }
[8000d8f]1728
[5876fcb]1729    ForceRefresh();
1730}
1731
1732void GfxCore::SetClinoFromPoint(wxPoint point)
1733{
[d877aa2]1734    // Given a point in window coordinates, set the elevation of the survey.
1735    // If the point is outside the clino, it snaps to 90 degree intervals;
1736    // otherwise it operates as normal.
[8000d8f]1737
[33b2094]1738    glaCoord dx = point.x - GetClinoXPosition();
1739    glaCoord dy = point.y - GetIndicatorYPosition();
1740    glaCoord radius = GetIndicatorRadius();
[f433fda]1741
[5876fcb]1742    if (dx >= 0 && dx * dx + dy * dy <= radius * radius) {
[0580c6a]1743        TiltCave(deg(atan2(double(dy), double(dx))) - m_TiltAngle);
[429465a]1744        m_MouseOutsideElev = false;
[e577f89]1745    } else if (dy >= INDICATOR_MARGIN) {
1746        TiltCave(90.0 - m_TiltAngle);
[429465a]1747        m_MouseOutsideElev = true;
[e577f89]1748    } else if (dy <= -INDICATOR_MARGIN) {
1749        TiltCave(-90.0 - m_TiltAngle);
[429465a]1750        m_MouseOutsideElev = true;
[e577f89]1751    } else {
[429465a]1752        TiltCave(-m_TiltAngle);
1753        m_MouseOutsideElev = true;
[5876fcb]1754    }
[8000d8f]1755
[5876fcb]1756    ForceRefresh();
[8000d8f]1757}
1758
[5876fcb]1759void GfxCore::SetScaleBarFromOffset(wxCoord dx)
[8000d8f]1760{
[5876fcb]1761    // Set the scale of the survey, given an offset as to how much the mouse has
1762    // been dragged over the scalebar since the last scale change.
[8000d8f]1763
[5b7164d]1764    SetScale((m_ScaleBarWidth + dx) * m_Scale / m_ScaleBarWidth);
[5876fcb]1765    ForceRefresh();
1766}
[8000d8f]1767
[5876fcb]1768void GfxCore::RedrawIndicators()
1769{
1770    // Redraw the compass and clino indicators.
[8000d8f]1771
[203d2a7]1772    const wxRect r(m_XSize - INDICATOR_OFFSET_X - INDICATOR_BOX_SIZE*2 -
[429465a]1773                     INDICATOR_GAP,
1774                   m_YSize - INDICATOR_OFFSET_Y - INDICATOR_BOX_SIZE,
1775                   INDICATOR_BOX_SIZE*2 + INDICATOR_GAP,
1776                   INDICATOR_BOX_SIZE);
[f433fda]1777
[5876fcb]1778    Refresh(false, &r);
[8000d8f]1779}
1780
[5876fcb]1781void GfxCore::StartRotation()
[8000d8f]1782{
[5876fcb]1783    // Start the survey rotating.
[f433fda]1784
[5876fcb]1785    m_Rotating = true;
1786    timer.Start(drawtime);
1787}
[8000d8f]1788
[5876fcb]1789void GfxCore::ToggleRotation()
1790{
1791    // Toggle the survey rotation on/off.
[f433fda]1792
[5876fcb]1793    if (m_Rotating) {
[2a3d328]1794        StopRotation();
1795    } else {
1796        StartRotation();
[5876fcb]1797    }
1798}
[8000d8f]1799
[5876fcb]1800void GfxCore::StopRotation()
1801{
1802    // Stop the survey rotating.
[8000d8f]1803
[5876fcb]1804    m_Rotating = false;
[33b2094]1805    ForceRefresh();
[5876fcb]1806}
[8000d8f]1807
[eef68f9]1808bool GfxCore::IsExtendedElevation() const
[5876fcb]1809{
[eef68f9]1810    return m_Parent->IsExtendedElevation();
[5876fcb]1811}
[8000d8f]1812
[5876fcb]1813void GfxCore::ReverseRotation()
1814{
1815    // Reverse the direction of rotation.
[8000d8f]1816
[5876fcb]1817    m_RotationStep = -m_RotationStep;
1818}
[8000d8f]1819
[5876fcb]1820void GfxCore::RotateSlower(bool accel)
1821{
1822    // Decrease the speed of rotation, optionally by an increased amount.
[8000d8f]1823
[5876fcb]1824    m_RotationStep /= accel ? 1.44 : 1.2;
[e577f89]1825    if (m_RotationStep < 1.0) {
1826        m_RotationStep = 1.0;
[1690fa9]1827    }
[8000d8f]1828}
1829
[5876fcb]1830void GfxCore::RotateFaster(bool accel)
1831{
1832    // Increase the speed of rotation, optionally by an increased amount.
1833
1834    m_RotationStep *= accel ? 1.44 : 1.2;
[e577f89]1835    if (m_RotationStep > 450.0) {
1836        m_RotationStep = 450.0;
[1690fa9]1837    }
[5876fcb]1838}
[8000d8f]1839
[5876fcb]1840void GfxCore::SwitchToElevation()
[8000d8f]1841{
[5876fcb]1842    // Perform an animated switch to elevation view.
[8000d8f]1843
[5876fcb]1844    switch (m_SwitchingTo) {
[429465a]1845        case 0:
1846            timer.Start(drawtime);
1847            m_SwitchingTo = ELEVATION;
1848            break;
[f433fda]1849
[429465a]1850        case PLAN:
1851            m_SwitchingTo = ELEVATION;
1852            break;
[f433fda]1853
[429465a]1854        case ELEVATION:
1855            // a second order to switch takes us there right away
1856            TiltCave(-m_TiltAngle);
1857            m_SwitchingTo = 0;
1858            ForceRefresh();
[5876fcb]1859    }
[8000d8f]1860}
1861
[5876fcb]1862void GfxCore::SwitchToPlan()
[8000d8f]1863{
[5876fcb]1864    // Perform an animated switch to plan view.
[8000d8f]1865
[5876fcb]1866    switch (m_SwitchingTo) {
[429465a]1867        case 0:
1868            timer.Start(drawtime);
1869            m_SwitchingTo = PLAN;
1870            break;
[f433fda]1871
[429465a]1872        case ELEVATION:
1873            m_SwitchingTo = PLAN;
1874            break;
[8000d8f]1875
[429465a]1876        case PLAN:
[0580c6a]1877            // A second order to switch takes us there right away
[e577f89]1878            TiltCave(90.0 - m_TiltAngle);
[429465a]1879            m_SwitchingTo = 0;
1880            ForceRefresh();
[8000d8f]1881    }
[5876fcb]1882}
[8000d8f]1883
[d1628e8e]1884void GfxCore::SetViewTo(Double xmin, Double xmax, Double ymin, Double ymax, Double zmin, Double zmax)
1885{
1886
1887    SetTranslation(-Vector3((xmin + xmax) / 2, (ymin + ymax) / 2, (zmin + zmax) / 2));
[d0f5918]1888    Double scale = HUGE_VAL;
[d1628e8e]1889    const Vector3 ext = m_Parent->GetExtent();
1890    if (xmax > xmin) {
1891        Double s = ext.GetX() / (xmax - xmin);
1892        if (s < scale) scale = s;
1893    }
1894    if (ymax > ymin) {
1895        Double s = ext.GetY() / (ymax - ymin);
1896        if (s < scale) scale = s;
1897    }
1898    if (!ShowingPlan() && zmax > zmin) {
1899        Double s = ext.GetZ() / (zmax - zmin);
1900        if (s < scale) scale = s;
1901    }
[d0f5918]1902    if (scale != HUGE_VAL) SetScale(scale);
[d1628e8e]1903    ForceRefresh();
1904}
1905
[14acdae]1906bool GfxCore::CanRaiseViewpoint() const
[5876fcb]1907{
1908    // Determine if the survey can be viewed from a higher angle of elevation.
[f433fda]1909
[0662b0b]1910    return GetPerspective() ? (m_TiltAngle > -90.0) : (m_TiltAngle < 90.0);
[8000d8f]1911}
1912
[14acdae]1913bool GfxCore::CanLowerViewpoint() const
[2effbf1]1914{
[5876fcb]1915    // Determine if the survey can be viewed from a lower angle of elevation.
[2effbf1]1916
[0662b0b]1917    return GetPerspective() ? (m_TiltAngle < 90.0) : (m_TiltAngle > -90.0);
[5876fcb]1918}
[2effbf1]1919
[78c67a6]1920bool GfxCore::HasDepth() const
[bd21214]1921{
[78c67a6]1922    return m_Parent->GetDepthExtent() == 0.0;
[bd21214]1923}
1924
[843ee7b]1925bool GfxCore::HasErrorInformation() const
[d4650b3]1926{
[843ee7b]1927    return m_Parent->HasErrorInformation();
[d4650b3]1928}
1929
[843ee7b]1930bool GfxCore::HasDateInformation() const
[c61aa79]1931{
[843ee7b]1932    return m_Parent->GetDateMin() >= 0;
[c61aa79]1933}
1934
[14acdae]1935bool GfxCore::ShowingPlan() const
[5876fcb]1936{
1937    // Determine if the survey is in plan view.
[f433fda]1938
[e577f89]1939    return (m_TiltAngle == 90.0);
[2effbf1]1940}
1941
[14acdae]1942bool GfxCore::ShowingElevation() const
[8000d8f]1943{
[5876fcb]1944    // Determine if the survey is in elevation view.
[f433fda]1945
[5876fcb]1946    return (m_TiltAngle == 0.0);
[8000d8f]1947}
1948
[14acdae]1949bool GfxCore::ShowingMeasuringLine() const
[8000d8f]1950{
[5876fcb]1951    // Determine if the measuring line is being shown.
[f433fda]1952
[c00c6713]1953    return (m_there.IsValid() && m_here.IsValid());
[8000d8f]1954}
1955
[eff44b9]1956void GfxCore::ToggleFlag(bool* flag, int update)
[5876fcb]1957{
1958    *flag = !*flag;
[6747314]1959    if (update == UPDATE_BLOBS) {
[eff44b9]1960        UpdateBlobs();
[ef1870d]1961    } else if (update == UPDATE_BLOBS_AND_CROSSES) {
1962        UpdateBlobs();
1963        InvalidateList(LIST_CROSSES);
[6cd6bbe]1964    }
[eff44b9]1965    ForceRefresh();
[5876fcb]1966}
[93744a5]1967
[14acdae]1968int GfxCore::GetNumEntrances() const
[4b1fc48]1969{
[5876fcb]1970    return m_Parent->GetNumEntrances();
1971}
[bd7a61b]1972
[14acdae]1973int GfxCore::GetNumFixedPts() const
[5876fcb]1974{
1975    return m_Parent->GetNumFixedPts();
1976}
[7757a4ed]1977
[14acdae]1978int GfxCore::GetNumExportedPts() const
[5876fcb]1979{
1980    return m_Parent->GetNumExportedPts();
1981}
1982
1983void GfxCore::ClearTreeSelection()
1984{
1985    m_Parent->ClearTreeSelection();
1986}
1987
[82c3731]1988void GfxCore::CentreOn(const Point &p)
[5876fcb]1989{
[d67450e]1990    SetTranslation(-p);
[00a68e0]1991    m_HitTestGridValid = false;
[f433fda]1992
[5876fcb]1993    ForceRefresh();
[4b1fc48]1994}
[5876fcb]1995
[33b2094]1996void GfxCore::ForceRefresh()
1997{
1998    Refresh(false);
1999}
2000
[d2fcc9b]2001void GfxCore::GenerateList(unsigned int l)
[33b2094]2002{
[9eb58d0]2003    assert(m_HaveData);
[3ddcad8]2004
[d2fcc9b]2005    switch (l) {
[fe665c4]2006        case LIST_COMPASS:
2007            DrawCompass();
2008            break;
2009        case LIST_CLINO:
2010            DrawClino();
2011            break;
2012        case LIST_CLINO_BACK:
2013            DrawClinoBack();
2014            break;
[252d759]2015        case LIST_DEPTHBAR:
2016            DrawDepthbar();
2017            break;
[d4650b3]2018        case LIST_DATEBAR:
2019            DrawDatebar();
2020            break;
[c61aa79]2021        case LIST_ERRORBAR:
2022            DrawErrorbar();
2023            break;
[d2fcc9b]2024        case LIST_UNDERGROUND_LEGS:
2025            GenerateDisplayList();
2026            break;
2027        case LIST_TUBES:
2028            GenerateDisplayListTubes();
2029            break;
2030        case LIST_SURFACE_LEGS:
2031            GenerateDisplayListSurface();
2032            break;
[86fe6e4]2033        case LIST_BLOBS:
2034            GenerateBlobsDisplayList();
[37d7084]2035            break;
[86fe6e4]2036        case LIST_CROSSES: {
2037            BeginCrosses();
2038            SetColour(col_LIGHT_GREY);
2039            list<LabelInfo*>::const_iterator pos = m_Parent->GetLabels();
2040            while (pos != m_Parent->GetLabelsEnd()) {
2041                const LabelInfo* label = *pos++;
2042
2043                if ((m_Surface && label->IsSurface()) ||
2044                    (m_Legs && label->IsUnderground()) ||
2045                    (!label->IsSurface() && !label->IsUnderground())) {
2046                    // Check if this station should be displayed
2047                    // (last case is for stns with no legs attached)
2048                    DrawCross(label->GetX(), label->GetY(), label->GetZ());
2049                }
2050            }
2051            EndCrosses();
2052            break;
2053        }
[37d7084]2054        case LIST_GRID:
2055            DrawGrid();
[d2fcc9b]2056            break;
[86fe6e4]2057        case LIST_SHADOW:
2058            GenerateDisplayListShadow();
[d2fcc9b]2059            break;
2060        default:
2061            assert(false);
2062            break;
2063    }
2064}
2065
[d67450e]2066void GfxCore::ToggleSmoothShading()
2067{
2068    GLACanvas::ToggleSmoothShading();
2069    InvalidateList(LIST_TUBES);
2070    ForceRefresh();
2071}
2072
[d2fcc9b]2073void GfxCore::GenerateDisplayList()
2074{
2075    // Generate the display list for the underground legs.
[c61aa79]2076    list<traverse>::const_iterator trav = m_Parent->traverses_begin();
2077    list<traverse>::const_iterator tend = m_Parent->traverses_end();
[3ddcad8]2078    while (trav != tend) {
2079        (this->*AddPoly)(*trav);
2080        ++trav;
2081    }
[33b2094]2082}
2083
[9eb58d0]2084void GfxCore::GenerateDisplayListTubes()
[33b2094]2085{
[9eb58d0]2086    // Generate the display list for the tubes.
[ee05463]2087    list<vector<XSect> >::const_iterator trav = m_Parent->tubes_begin();
2088    list<vector<XSect> >::const_iterator tend = m_Parent->tubes_end();
[3ddcad8]2089    while (trav != tend) {
2090        SkinPassage(*trav);
2091        ++trav;
2092    }
[9eb58d0]2093}
[33b2094]2094
[9eb58d0]2095void GfxCore::GenerateDisplayListSurface()
2096{
2097    // Generate the display list for the surface legs.
[3ddcad8]2098    EnableDashedLines();
[c61aa79]2099    list<traverse>::const_iterator trav = m_Parent->surface_traverses_begin();
2100    list<traverse>::const_iterator tend = m_Parent->surface_traverses_end();
[3ddcad8]2101    while (trav != tend) {
[c61aa79]2102        if (m_ColourBy == COLOUR_BY_ERROR) {
2103            AddPolylineError(*trav);
2104        } else {
2105            AddPolyline(*trav);
2106        }
[3ddcad8]2107        ++trav;
2108    }
2109    DisableDashedLines();
[d9b3270]2110}
[33b2094]2111
[37d7084]2112void GfxCore::GenerateDisplayListShadow()
[f4c5932]2113{
2114    SetColour(col_BLACK);
[c61aa79]2115    list<traverse>::const_iterator trav = m_Parent->traverses_begin();
2116    list<traverse>::const_iterator tend = m_Parent->traverses_end();
[f4c5932]2117    while (trav != tend) {
2118        AddPolylineShadow(*trav);
2119        ++trav;
2120    }
2121}
2122
[d2fcc9b]2123// Plot blobs.
[d9b3270]2124void GfxCore::GenerateBlobsDisplayList()
2125{
[e633bb1]2126    if (!(m_Entrances || m_FixedPts || m_ExportedPts ||
2127          m_Parent->GetNumHighlightedPts()))
2128        return;
[429465a]2129
[e633bb1]2130    // Plot blobs.
2131    gla_colour prev_col = col_BLACK; // not a colour used for blobs
2132    list<LabelInfo*>::const_iterator pos = m_Parent->GetLabels();
2133    BeginBlobs();
2134    while (pos != m_Parent->GetLabelsEnd()) {
[429465a]2135        const LabelInfo* label = *pos++;
2136
2137        // When more than one flag is set on a point:
2138        // search results take priority over entrance highlighting
2139        // which takes priority over fixed point
2140        // highlighting, which in turn takes priority over exported
2141        // point highlighting.
2142
2143        if (!((m_Surface && label->IsSurface()) ||
2144              (m_Legs && label->IsUnderground()) ||
2145              (!label->IsSurface() && !label->IsUnderground()))) {
2146            // if this station isn't to be displayed, skip to the next
2147            // (last case is for stns with no legs attached)
2148            continue;
2149        }
2150
[e633bb1]2151        gla_colour col;
2152
[429465a]2153        if (label->IsHighLighted()) {
2154            col = col_YELLOW;
2155        } else if (m_Entrances && label->IsEntrance()) {
2156            col = col_GREEN;
2157        } else if (m_FixedPts && label->IsFixedPt()) {
2158            col = col_RED;
2159        } else if (m_ExportedPts && label->IsExportedPt()) {
2160            col = col_TURQUOISE;
2161        } else {
2162            continue;
2163        }
2164
[e633bb1]2165        // Stations are sorted by blob type, so colour changes are infrequent.
2166        if (col != prev_col) {
[aa048c3]2167            SetColour(col);
[e633bb1]2168            prev_col = col;
[429465a]2169        }
[e633bb1]2170        DrawBlob(label->GetX(), label->GetY(), label->GetZ());
[d9b3270]2171    }
[e633bb1]2172    EndBlobs();
[33b2094]2173}
2174
[6747314]2175void GfxCore::DrawIndicators()
[33b2094]2176{
[97ea48d]2177    // Draw colour key.
2178    if (m_ColourKey) {
[1b164a0]2179        if (m_ColourBy == COLOUR_BY_DEPTH && m_Parent->GetDepthExtent() != 0.0) {
2180            DrawList2D(LIST_DEPTHBAR, m_XSize - COLOUR_KEY_OFFSET_X, m_YSize, 0);
2181        } else if (m_ColourBy == COLOUR_BY_DATE && HasDateInformation()) {
2182            DrawList2D(LIST_DATEBAR, m_XSize - COLOUR_KEY_OFFSET_X, m_YSize, 0);
2183        } else if (m_ColourBy == COLOUR_BY_ERROR && m_Parent->HasErrorInformation()) {
2184            DrawList2D(LIST_ERRORBAR, m_XSize - COLOUR_KEY_OFFSET_X, m_YSize, 0);
2185        }
[33b2094]2186    }
[56da40e]2187
[203d2a7]2188    // Draw compass or elevation/heading indicators.
[eef68f9]2189    if (m_Compass || m_Clino) {
2190        if (!m_Parent->IsExtendedElevation()) Draw2dIndicators();
[203d2a7]2191    }
[f433fda]2192
[56da40e]2193    // Draw scalebar.
2194    if (m_Scalebar) {
[429465a]2195        DrawScalebar();
[56da40e]2196    }
[33b2094]2197}
2198
[f336ab9]2199void GfxCore::PlaceVertexWithColour(const Vector3 & v,
2200                                    glaTexCoord tex_x, glaTexCoord tex_y,
[b839829]2201                                    Double factor)
[f383708]2202{
[da6c802]2203    SetColour(GetSurfacePen(), factor); // FIXME : assumes surface pen is white!
[b839829]2204    PlaceVertex(v, tex_x, tex_y);
[da6c802]2205}
[f433fda]2206
[b839829]2207void GfxCore::SetDepthColour(Double z, Double factor) {
[da6c802]2208    // Set the drawing colour based on the altitude.
[78c67a6]2209    Double z_ext = m_Parent->GetDepthExtent();
[125c9ea]2210    assert(z_ext > 0);
[f383708]2211
[b839829]2212    z -= m_Parent->GetDepthMin();
[f383708]2213    // points arising from tubes may be slightly outside the limits...
[78c67a6]2214    if (z < 0) z = 0;
2215    if (z > z_ext) z = z_ext;
[a6f081c]2216
[78c67a6]2217    Double how_far = z / z_ext;
[f383708]2218    assert(how_far >= 0.0);
2219    assert(how_far <= 1.0);
2220
[97ea48d]2221    int band = int(floor(how_far * (GetNumColourBands() - 1)));
[0e69efe]2222    GLAPen pen1 = GetPen(band);
[97ea48d]2223    if (band < GetNumColourBands() - 1) {
[d4650b3]2224        const GLAPen& pen2 = GetPen(band + 1);
[f433fda]2225
[97ea48d]2226        Double interval = z_ext / (GetNumColourBands() - 1);
[78c67a6]2227        Double into_band = z / interval - band;
[f433fda]2228
[d4650b3]2229//      printf("%g z_offset=%g interval=%g band=%d\n", into_band,
2230//             z_offset, interval, band);
2231        // FIXME: why do we need to clamp here?  Is it because the walls can
2232        // extend further up/down than the centre-line?
2233        if (into_band < 0.0) into_band = 0.0;
2234        if (into_band > 1.0) into_band = 1.0;
2235        assert(into_band >= 0.0);
2236        assert(into_band <= 1.0);
[f433fda]2237
[d4650b3]2238        pen1.Interpolate(pen2, into_band);
2239    }
[aa048c3]2240    SetColour(pen1, factor);
[b839829]2241}
[f383708]2242
[b839829]2243void GfxCore::PlaceVertexWithDepthColour(const Vector3 &v, Double factor)
2244{
2245    SetDepthColour(v.GetZ(), factor);
[d67450e]2246    PlaceVertex(v);
[f383708]2247}
2248
[b839829]2249void GfxCore::PlaceVertexWithDepthColour(const Vector3 &v,
[f336ab9]2250                                         glaTexCoord tex_x, glaTexCoord tex_y,
[b839829]2251                                         Double factor)
2252{
2253    SetDepthColour(v.GetZ(), factor);
2254    PlaceVertex(v, tex_x, tex_y);
2255}
2256
[82f584f]2257void GfxCore::SplitLineAcrossBands(int band, int band2,
[4a0e6b35]2258                                   const Vector3 &p, const Vector3 &q,
[82f584f]2259                                   Double factor)
[b5d64e6]2260{
[4a0e6b35]2261    const int step = (band < band2) ? 1 : -1;
[b5d64e6]2262    for (int i = band; i != band2; i += step) {
[4a0e6b35]2263        const Double z = GetDepthBoundaryBetweenBands(i, i + step);
2264
2265        // Find the intersection point of the line p -> q
2266        // with the plane parallel to the xy-plane with z-axis intersection z.
[d67450e]2267        assert(q.GetZ() - p.GetZ() != 0.0);
[4a0e6b35]2268
[d67450e]2269        const Double t = (z - p.GetZ()) / (q.GetZ() - p.GetZ());
[4a0e6b35]2270//      assert(0.0 <= t && t <= 1.0);           FIXME: rounding problems!
2271
[d67450e]2272        const Double x = p.GetX() + t * (q.GetX() - p.GetX());
2273        const Double y = p.GetY() + t * (q.GetY() - p.GetY());
[4a0e6b35]2274
[d67450e]2275        PlaceVertexWithDepthColour(Vector3(x, y, z), factor);
[b5d64e6]2276    }
2277}
2278
[14acdae]2279int GfxCore::GetDepthColour(Double z) const
[b5d64e6]2280{
[82f584f]2281    // Return the (0-based) depth colour band index for a z-coordinate.
[78c67a6]2282    Double z_ext = m_Parent->GetDepthExtent();
[125c9ea]2283    assert(z_ext > 0);
[78c67a6]2284    z -= m_Parent->GetDepthMin();
[a6f081c]2285    z += z_ext / 2;
[97ea48d]2286    return int(z / z_ext * (GetNumColourBands() - 1));
[b5d64e6]2287}
2288
[14acdae]2289Double GfxCore::GetDepthBoundaryBetweenBands(int a, int b) const
[b5d64e6]2290{
[82f584f]2291    // Return the z-coordinate of the depth colour boundary between
2292    // two adjacent depth colour bands (specified by 0-based indices).
2293
2294    assert((a == b - 1) || (a == b + 1));
[97ea48d]2295    if (GetNumColourBands() == 1) return 0;
[82f584f]2296
2297    int band = (a > b) ? a : b; // boundary N lies on the bottom of band N.
[78c67a6]2298    Double z_ext = m_Parent->GetDepthExtent();
[97ea48d]2299    return (z_ext * band / (GetNumColourBands() - 1)) - z_ext / 2
[78c67a6]2300        + m_Parent->GetDepthMin();
[b5d64e6]2301}
2302
[c61aa79]2303void GfxCore::AddPolyline(const traverse & centreline)
[da6c802]2304{
2305    BeginPolyline();
2306    SetColour(GetSurfacePen());
[d4650b3]2307    vector<PointInfo>::const_iterator i = centreline.begin();
[d67450e]2308    PlaceVertex(*i);
[da6c802]2309    ++i;
2310    while (i != centreline.end()) {
[d67450e]2311        PlaceVertex(*i);
[da6c802]2312        ++i;
2313    }
2314    EndPolyline();
2315}
[2a3d328]2316
[c61aa79]2317void GfxCore::AddPolylineShadow(const traverse & centreline)
[f4c5932]2318{
2319    BeginPolyline();
[78c67a6]2320    const double z = -0.5 * m_Parent->GetZExtent();
[d4650b3]2321    vector<PointInfo>::const_iterator i = centreline.begin();
[78c67a6]2322    PlaceVertex(i->GetX(), i->GetY(), z);
[f4c5932]2323    ++i;
2324    while (i != centreline.end()) {
[78c67a6]2325        PlaceVertex(i->GetX(), i->GetY(), z);
[f4c5932]2326        ++i;
2327    }
2328    EndPolyline();
2329}
2330
[c61aa79]2331void GfxCore::AddPolylineDepth(const traverse & centreline)
[da6c802]2332{
2333    BeginPolyline();
[d4650b3]2334    vector<PointInfo>::const_iterator i, prev_i;
[da6c802]2335    i = centreline.begin();
[ee7af72]2336    int band0 = GetDepthColour(i->GetZ());
[d67450e]2337    PlaceVertexWithDepthColour(*i);
[da6c802]2338    prev_i = i;
2339    ++i;
2340    while (i != centreline.end()) {
[ee7af72]2341        int band = GetDepthColour(i->GetZ());
[da6c802]2342        if (band != band0) {
[d67450e]2343            SplitLineAcrossBands(band0, band, *prev_i, *i);
[da6c802]2344            band0 = band;
2345        }
[d67450e]2346        PlaceVertexWithDepthColour(*i);
[da6c802]2347        prev_i = i;
2348        ++i;
2349    }
2350    EndPolyline();
2351}
2352
[f433fda]2353void GfxCore::AddQuadrilateral(const Vector3 &a, const Vector3 &b,
[14acdae]2354                               const Vector3 &c, const Vector3 &d)
[da6c802]2355{
2356    Vector3 normal = (a - c) * (d - b);
2357    normal.normalise();
2358    Double factor = dot(normal, light) * .3 + .7;
[f336ab9]2359    glaTexCoord w(ceil(((b - a).magnitude() + (d - c).magnitude()) * .5));
2360    glaTexCoord h(ceil(((b - c).magnitude() + (d - a).magnitude()) * .5));
[9b57c71b]2361    // FIXME: should plot triangles instead to avoid rendering glitches.
[da6c802]2362    BeginQuadrilaterals();
[b839829]2363    PlaceVertexWithColour(a, 0, 0, factor);
2364    PlaceVertexWithColour(b, w, 0, factor);
2365    PlaceVertexWithColour(c, w, h, factor);
2366    PlaceVertexWithColour(d, 0, h, factor);
[da6c802]2367    EndQuadrilaterals();
2368}
2369
2370void GfxCore::AddQuadrilateralDepth(const Vector3 &a, const Vector3 &b,
2371                                    const Vector3 &c, const Vector3 &d)
[2b02270]2372{
2373    Vector3 normal = (a - c) * (d - b);
2374    normal.normalise();
2375    Double factor = dot(normal, light) * .3 + .7;
2376    int a_band, b_band, c_band, d_band;
[d67450e]2377    a_band = GetDepthColour(a.GetZ());
[97ea48d]2378    a_band = min(max(a_band, 0), GetNumColourBands());
[d67450e]2379    b_band = GetDepthColour(b.GetZ());
[97ea48d]2380    b_band = min(max(b_band, 0), GetNumColourBands());
[d67450e]2381    c_band = GetDepthColour(c.GetZ());
[97ea48d]2382    c_band = min(max(c_band, 0), GetNumColourBands());
[d67450e]2383    d_band = GetDepthColour(d.GetZ());
[97ea48d]2384    d_band = min(max(d_band, 0), GetNumColourBands());
[97fb83a]2385    // All this splitting is incorrect - we need to make a separate polygon
2386    // for each depth band...
[f336ab9]2387    glaTexCoord w(ceil(((b - a).magnitude() + (d - c).magnitude()) * .5));
2388    glaTexCoord h(ceil(((b - c).magnitude() + (d - a).magnitude()) * .5));
[b5d64e6]2389    BeginPolygon();
[d67450e]2390////    PlaceNormal(normal);
[b839829]2391    PlaceVertexWithDepthColour(a, 0, 0, factor);
[2b02270]2392    if (a_band != b_band) {
[b5d64e6]2393        SplitLineAcrossBands(a_band, b_band, a, b, factor);
[2b02270]2394    }
[b839829]2395    PlaceVertexWithDepthColour(b, w, 0, factor);
[2b02270]2396    if (b_band != c_band) {
[b5d64e6]2397        SplitLineAcrossBands(b_band, c_band, b, c, factor);
[2b02270]2398    }
[b839829]2399    PlaceVertexWithDepthColour(c, w, h, factor);
[2b02270]2400    if (c_band != d_band) {
[b5d64e6]2401        SplitLineAcrossBands(c_band, d_band, c, d, factor);
[2b02270]2402    }
[b839829]2403    PlaceVertexWithDepthColour(d, 0, h, factor);
[2b02270]2404    if (d_band != a_band) {
[b5d64e6]2405        SplitLineAcrossBands(d_band, a_band, d, a, factor);
[2b02270]2406    }
[b5d64e6]2407    EndPolygon();
[2b02270]2408}
2409
[1ee204e]2410void GfxCore::SetColourFromDate(int date, Double factor)
[d4650b3]2411{
2412    // Set the drawing colour based on a date.
2413
[1ee204e]2414    if (date == -1) {
[2043961]2415        // Undated.
[d4650b3]2416        SetColour(GetSurfacePen(), factor);
2417        return;
2418    }
2419
[1ee204e]2420    int date_offset = date - m_Parent->GetDateMin();
[2043961]2421    if (date_offset == 0) {
2422        // Earliest date - handle as a special case for the single date case.
2423        SetColour(GetPen(0), factor);
2424        return;
2425    }
[d4650b3]2426
[2043961]2427    int date_ext = m_Parent->GetDateExtent();
[d4650b3]2428    Double how_far = (Double)date_offset / date_ext;
2429    assert(how_far >= 0.0);
2430    assert(how_far <= 1.0);
2431
[97ea48d]2432    int band = int(floor(how_far * (GetNumColourBands() - 1)));
[d4650b3]2433    GLAPen pen1 = GetPen(band);
[97ea48d]2434    if (band < GetNumColourBands() - 1) {
[d4650b3]2435        const GLAPen& pen2 = GetPen(band + 1);
2436
[97ea48d]2437        Double interval = date_ext / (GetNumColourBands() - 1);
[d4650b3]2438        Double into_band = date_offset / interval - band;
2439
2440//      printf("%g z_offset=%g interval=%g band=%d\n", into_band,
2441//             z_offset, interval, band);
2442        // FIXME: why do we need to clamp here?  Is it because the walls can
2443        // extend further up/down than the centre-line?
2444        if (into_band < 0.0) into_band = 0.0;
2445        if (into_band > 1.0) into_band = 1.0;
2446        assert(into_band >= 0.0);
2447        assert(into_band <= 1.0);
2448
2449        pen1.Interpolate(pen2, into_band);
2450    }
2451    SetColour(pen1, factor);
2452}
2453
[c61aa79]2454void GfxCore::AddPolylineDate(const traverse & centreline)
[d4650b3]2455{
2456    BeginPolyline();
2457    vector<PointInfo>::const_iterator i, prev_i;
2458    i = centreline.begin();
[1ee204e]2459    int date = i->GetDate();
[d4650b3]2460    SetColourFromDate(date, 1.0);
[d67450e]2461    PlaceVertex(*i);
[d4650b3]2462    prev_i = i;
2463    while (++i != centreline.end()) {
[1ee204e]2464        int newdate = i->GetDate();
[d4650b3]2465        if (newdate != date) {
2466            EndPolyline();
2467            BeginPolyline();
2468            date = newdate;
2469            SetColourFromDate(date, 1.0);
[d67450e]2470            PlaceVertex(*prev_i);
[d4650b3]2471        }
[d67450e]2472        PlaceVertex(*i);
[d4650b3]2473        prev_i = i;
2474    }
2475    EndPolyline();
2476}
2477
[1ee204e]2478static int static_date_hack; // FIXME
[d4650b3]2479
2480void GfxCore::AddQuadrilateralDate(const Vector3 &a, const Vector3 &b,
2481                                   const Vector3 &c, const Vector3 &d)
2482{
2483    Vector3 normal = (a - c) * (d - b);
2484    normal.normalise();
2485    Double factor = dot(normal, light) * .3 + .7;
2486    int w = int(ceil(((b - a).magnitude() + (d - c).magnitude()) / 2));
2487    int h = int(ceil(((b - c).magnitude() + (d - a).magnitude()) / 2));
2488    // FIXME: should plot triangles instead to avoid rendering glitches.
[b839829]2489    BeginQuadrilaterals();
[d67450e]2490////    PlaceNormal(normal);
[d4650b3]2491    SetColourFromDate(static_date_hack, factor);
[b839829]2492    PlaceVertex(a, 0, 0);
2493    PlaceVertex(b, w, 0);
2494    PlaceVertex(c, w, h);
2495    PlaceVertex(d, 0, h);
2496    EndQuadrilaterals();
[d4650b3]2497}
2498
[c61aa79]2499static double static_E_hack; // FIXME
2500
2501void GfxCore::SetColourFromError(double E, Double factor)
2502{
2503    // Set the drawing colour based on an error value.
2504
2505    if (E < 0) {
2506        SetColour(GetSurfacePen(), factor);
2507        return;
2508    }
2509
2510    Double how_far = E / MAX_ERROR;
2511    assert(how_far >= 0.0);
2512    if (how_far > 1.0) how_far = 1.0;
2513
[97ea48d]2514    int band = int(floor(how_far * (GetNumColourBands() - 1)));
[c61aa79]2515    GLAPen pen1 = GetPen(band);
[97ea48d]2516    if (band < GetNumColourBands() - 1) {
[c61aa79]2517        const GLAPen& pen2 = GetPen(band + 1);
2518
[97ea48d]2519        Double interval = MAX_ERROR / (GetNumColourBands() - 1);
[c61aa79]2520        Double into_band = E / interval - band;
2521
2522//      printf("%g z_offset=%g interval=%g band=%d\n", into_band,
2523//             z_offset, interval, band);
2524        // FIXME: why do we need to clamp here?  Is it because the walls can
2525        // extend further up/down than the centre-line?
2526        if (into_band < 0.0) into_band = 0.0;
2527        if (into_band > 1.0) into_band = 1.0;
2528        assert(into_band >= 0.0);
2529        assert(into_band <= 1.0);
2530
2531        pen1.Interpolate(pen2, into_band);
2532    }
2533    SetColour(pen1, factor);
2534}
2535
2536void GfxCore::AddQuadrilateralError(const Vector3 &a, const Vector3 &b,
2537                                    const Vector3 &c, const Vector3 &d)
2538{
2539    Vector3 normal = (a - c) * (d - b);
2540    normal.normalise();
2541    Double factor = dot(normal, light) * .3 + .7;
2542    int w = int(ceil(((b - a).magnitude() + (d - c).magnitude()) / 2));
2543    int h = int(ceil(((b - c).magnitude() + (d - a).magnitude()) / 2));
2544    // FIXME: should plot triangles instead to avoid rendering glitches.
[b839829]2545    BeginQuadrilaterals();
[c61aa79]2546////    PlaceNormal(normal);
2547    SetColourFromError(static_E_hack, factor);
[b839829]2548    PlaceVertex(a, 0, 0);
2549    PlaceVertex(b, w, 0);
2550    PlaceVertex(c, w, h);
2551    PlaceVertex(d, 0, h);
2552    EndQuadrilaterals();
[c61aa79]2553}
2554
2555void GfxCore::AddPolylineError(const traverse & centreline)
2556{
2557    BeginPolyline();
2558    SetColourFromError(centreline.E, 1.0);
2559    vector<PointInfo>::const_iterator i;
2560    for(i = centreline.begin(); i != centreline.end(); ++i) {
2561        PlaceVertex(*i);
2562    }
2563    EndPolyline();
2564}
2565
[da6c802]2566void
[ee05463]2567GfxCore::SkinPassage(const vector<XSect> & centreline)
[3ddcad8]2568{
[b3852b5]2569    assert(centreline.size() > 1);
[3ddcad8]2570    Vector3 U[4];
[ee05463]2571    XSect prev_pt_v;
[3ddcad8]2572    Vector3 last_right(1.0, 0.0, 0.0);
2573
[c61aa79]2574//  FIXME: it's not simple to set the colour of a tube based on error...
2575//    static_E_hack = something...
[ee05463]2576    vector<XSect>::const_iterator i = centreline.begin();
2577    vector<XSect>::size_type segment = 0;
[3ddcad8]2578    while (i != centreline.end()) {
2579        // get the coordinates of this vertex
[ee05463]2580        const XSect & pt_v = *i++;
[3ddcad8]2581
2582        double z_pitch_adjust = 0.0;
2583        bool cover_end = false;
2584
2585        Vector3 right, up;
2586
2587        const Vector3 up_v(0.0, 0.0, 1.0);
2588
2589        if (segment == 0) {
2590            assert(i != centreline.end());
2591            // first segment
2592
2593            // get the coordinates of the next vertex
[ee05463]2594            const XSect & next_pt_v = *i;
[3ddcad8]2595
2596            // calculate vector from this pt to the next one
[d67450e]2597            Vector3 leg_v = next_pt_v - pt_v;
[3ddcad8]2598
2599            // obtain a vector in the LRUD plane
2600            right = leg_v * up_v;
2601            if (right.magnitude() == 0) {
2602                right = last_right;
2603                // Obtain a second vector in the LRUD plane,
2604                // perpendicular to the first.
[760ad29d]2605                //up = right * leg_v;
2606                up = up_v;
[3ddcad8]2607            } else {
2608                last_right = right;
2609                up = up_v;
[da6c802]2610            }
2611
[3ddcad8]2612            cover_end = true;
[d4650b3]2613            static_date_hack = next_pt_v.GetDate();
[3ddcad8]2614        } else if (segment + 1 == centreline.size()) {
2615            // last segment
2616
2617            // Calculate vector from the previous pt to this one.
[d67450e]2618            Vector3 leg_v = pt_v - prev_pt_v;
[3ddcad8]2619
2620            // Obtain a horizontal vector in the LRUD plane.
2621            right = leg_v * up_v;
2622            if (right.magnitude() == 0) {
[d67450e]2623                right = Vector3(last_right.GetX(), last_right.GetY(), 0.0);
[3ddcad8]2624                // Obtain a second vector in the LRUD plane,
2625                // perpendicular to the first.
[760ad29d]2626                //up = right * leg_v;
2627                up = up_v;
[3ddcad8]2628            } else {
2629                last_right = right;
2630                up = up_v;
2631            }
[da6c802]2632
[3ddcad8]2633            cover_end = true;
[d4650b3]2634            static_date_hack = pt_v.GetDate();
[3ddcad8]2635        } else {
2636            assert(i != centreline.end());
2637            // Intermediate segment.
2638
2639            // Get the coordinates of the next vertex.
[ee05463]2640            const XSect & next_pt_v = *i;
[3ddcad8]2641
2642            // Calculate vectors from this vertex to the
2643            // next vertex, and from the previous vertex to
2644            // this one.
[d67450e]2645            Vector3 leg1_v = pt_v - prev_pt_v;
2646            Vector3 leg2_v = next_pt_v - pt_v;
[3ddcad8]2647
2648            // Obtain horizontal vectors perpendicular to
2649            // both legs, then normalise and average to get
2650            // a horizontal bisector.
2651            Vector3 r1 = leg1_v * up_v;
2652            Vector3 r2 = leg2_v * up_v;
2653            r1.normalise();
2654            r2.normalise();
2655            right = r1 + r2;
2656            if (right.magnitude() == 0) {
2657                // This is the "mid-pitch" case...
2658                right = last_right;
2659            }
2660            if (r1.magnitude() == 0) {
2661                Vector3 n = leg1_v;
2662                n.normalise();
[d67450e]2663                z_pitch_adjust = n.GetZ();
2664                //up = Vector3(0, 0, leg1_v.GetZ());
[760ad29d]2665                //up = right * up;
2666                up = up_v;
[3ddcad8]2667
2668                // Rotate pitch section to minimise the
2669                // "tortional stress" - FIXME: use
2670                // triangles instead of rectangles?
2671                int shift = 0;
2672                Double maxdotp = 0;
2673
2674                // Scale to unit vectors in the LRUD plane.
2675                right.normalise();
2676                up.normalise();
2677                Vector3 vec = up - right;
2678                for (int orient = 0; orient <= 3; ++orient) {
[d67450e]2679                    Vector3 tmp = U[orient] - prev_pt_v;
[3ddcad8]2680                    tmp.normalise();
2681                    Double dotp = dot(vec, tmp);
2682                    if (dotp > maxdotp) {
2683                        maxdotp = dotp;
2684                        shift = orient;
2685                    }
2686                }
2687                if (shift) {
2688                    if (shift != 2) {
2689                        Vector3 temp(U[0]);
[b3852b5]2690                        U[0] = U[shift];
2691                        U[shift] = U[2];
2692                        U[2] = U[shift ^ 2];
2693                        U[shift ^ 2] = temp;
[ee7af72]2694                    } else {
[3ddcad8]2695                        swap(U[0], U[2]);
2696                        swap(U[1], U[3]);
[ee7af72]2697                    }
[3ddcad8]2698                }
2699#if 0
2700                // Check that the above code actually permuted
2701                // the vertices correctly.
2702                shift = 0;
2703                maxdotp = 0;
[b3852b5]2704                for (int j = 0; j <= 3; ++j) {
[d67450e]2705                    Vector3 tmp = U[j] - prev_pt_v;
[3ddcad8]2706                    tmp.normalise();
2707                    Double dotp = dot(vec, tmp);
2708                    if (dotp > maxdotp) {
2709                        maxdotp = dotp + 1e-6; // Add small tolerance to stop 45 degree offset cases being flagged...
[b3852b5]2710                        shift = j;
[da6c802]2711                    }
[3ddcad8]2712                }
2713                if (shift) {
2714                    printf("New shift = %d!\n", shift);
2715                    shift = 0;
2716                    maxdotp = 0;
[b3852b5]2717                    for (int j = 0; j <= 3; ++j) {
[d67450e]2718                        Vector3 tmp = U[j] - prev_pt_v;
[3ddcad8]2719                        tmp.normalise();
2720                        Double dotp = dot(vec, tmp);
[b3852b5]2721                        printf("    %d : %.8f\n", j, dotp);
[da6c802]2722                    }
2723                }
[3ddcad8]2724#endif
2725            } else if (r2.magnitude() == 0) {
2726                Vector3 n = leg2_v;
2727                n.normalise();
[d67450e]2728                z_pitch_adjust = n.GetZ();
2729                //up = Vector3(0, 0, leg2_v.GetZ());
[760ad29d]2730                //up = right * up;
2731                up = up_v;
[3ddcad8]2732            } else {
2733                up = up_v;
[da6c802]2734            }
[3ddcad8]2735            last_right = right;
[d4650b3]2736            static_date_hack = pt_v.GetDate();
[da6c802]2737        }
2738
[3ddcad8]2739        // Scale to unit vectors in the LRUD plane.
2740        right.normalise();
2741        up.normalise();
[33b2094]2742
[3ddcad8]2743        if (z_pitch_adjust != 0) up += Vector3(0, 0, fabs(z_pitch_adjust));
[ce2f3ce]2744
[57a3cd4]2745        Double l = fabs(pt_v.GetL());
2746        Double r = fabs(pt_v.GetR());
2747        Double u = fabs(pt_v.GetU());
2748        Double d = fabs(pt_v.GetD());
[3ddcad8]2749
2750        // Produce coordinates of the corners of the LRUD "plane".
2751        Vector3 v[4];
[d67450e]2752        v[0] = pt_v - right * l + up * u;
2753        v[1] = pt_v + right * r + up * u;
2754        v[2] = pt_v + right * r - up * d;
2755        v[3] = pt_v - right * l - up * d;
[3ddcad8]2756
2757        if (segment > 0) {
2758            (this->*AddQuad)(v[0], v[1], U[1], U[0]);
2759            (this->*AddQuad)(v[2], v[3], U[3], U[2]);
2760            (this->*AddQuad)(v[1], v[2], U[2], U[1]);
2761            (this->*AddQuad)(v[3], v[0], U[0], U[3]);
[9eb58d0]2762        }
2763
[3ddcad8]2764        if (cover_end) {
2765            (this->*AddQuad)(v[3], v[2], v[1], v[0]);
2766        }
[9eb58d0]2767
[3ddcad8]2768        prev_pt_v = pt_v;
2769        U[0] = v[0];
2770        U[1] = v[1];
2771        U[2] = v[2];
2772        U[3] = v[3];
[9eb58d0]2773
[3ddcad8]2774        ++segment;
2775    }
[33b2094]2776}
[b13aee4]2777
2778void GfxCore::FullScreenMode()
2779{
[ea940373]2780    m_Parent->ViewFullScreen();
[b13aee4]2781}
[fdfa926]2782
2783bool GfxCore::IsFullScreen() const
2784{
2785    return m_Parent->IsFullScreen();
2786}
[1690fa9]2787
[46361bc]2788void
2789GfxCore::MoveViewer(double forward, double up, double right)
2790{
[e577f89]2791    double cT = cos(rad(m_TiltAngle));
2792    double sT = sin(rad(m_TiltAngle));
2793    double cP = cos(rad(m_PanAngle));
2794    double sP = sin(rad(m_PanAngle));
[46361bc]2795    Vector3 v_forward(cT * sP, cT * cP, -sT);
[867a1141]2796    Vector3 v_up(-sT * sP, -sT * cP, -cT);
2797    Vector3 v_right(-cP, sP, 0);
[d4a5aaf]2798    assert(fabs(dot(v_forward, v_up)) < 1e-6);
2799    assert(fabs(dot(v_forward, v_right)) < 1e-6);
2800    assert(fabs(dot(v_right, v_up)) < 1e-6);
[46361bc]2801    Vector3 move = v_forward * forward + v_up * up + v_right * right;
[d67450e]2802    AddTranslation(-move);
[d877aa2]2803    // Show current position.
[d67450e]2804    m_Parent->SetCoords(m_Parent->GetOffset() - GetTranslation());
[46361bc]2805    ForceRefresh();
2806}
2807
[1690fa9]2808PresentationMark GfxCore::GetView() const
2809{
[d67450e]2810    return PresentationMark(GetTranslation() + m_Parent->GetOffset(),
2811                            m_PanAngle, m_TiltAngle, m_Scale);
[1690fa9]2812}
2813
2814void GfxCore::SetView(const PresentationMark & p)
2815{
2816    m_SwitchingTo = 0;
[d67450e]2817    SetTranslation(p - m_Parent->GetOffset());
[1690fa9]2818    m_PanAngle = p.angle;
2819    m_TiltAngle = p.tilt_angle;
[08253d9]2820    SetRotation(m_PanAngle, m_TiltAngle);
[1690fa9]2821    SetScale(p.scale);
2822    ForceRefresh();
2823}
2824
[128fac4]2825void GfxCore::PlayPres(double speed, bool change_speed) {
2826    if (!change_speed || presentation_mode == 0) {
2827        if (speed == 0.0) {
2828            presentation_mode = 0;
2829            return;
2830        }
2831        presentation_mode = PLAYING;
2832        next_mark = m_Parent->GetPresMark(MARK_FIRST);
2833        SetView(next_mark);
2834        next_mark_time = 0; // There already!
2835        this_mark_total = 0;
2836        pres_reverse = (speed < 0);
2837    }
2838
[d67450e]2839    if (change_speed) pres_speed = speed;
2840
[128fac4]2841    if (speed != 0.0) {
2842        bool new_pres_reverse = (speed < 0);
2843        if (new_pres_reverse != pres_reverse) {
2844            pres_reverse = new_pres_reverse;
2845            if (pres_reverse) {
2846                next_mark = m_Parent->GetPresMark(MARK_PREV);
2847            } else {
2848                next_mark = m_Parent->GetPresMark(MARK_NEXT);
2849            }
2850            swap(this_mark_total, next_mark_time);
2851        }
2852    }
[1690fa9]2853}
[6a4cdcb6]2854
[da6c802]2855void GfxCore::SetColourBy(int colour_by) {
2856    m_ColourBy = colour_by;
2857    switch (colour_by) {
2858        case COLOUR_BY_DEPTH:
2859            AddQuad = &GfxCore::AddQuadrilateralDepth;
2860            AddPoly = &GfxCore::AddPolylineDepth;
2861            break;
[d4650b3]2862        case COLOUR_BY_DATE:
2863            AddQuad = &GfxCore::AddQuadrilateralDate;
2864            AddPoly = &GfxCore::AddPolylineDate;
2865            break;
[c61aa79]2866        case COLOUR_BY_ERROR:
2867            AddQuad = &GfxCore::AddQuadrilateralError;
2868            AddPoly = &GfxCore::AddPolylineError;
2869            break;
[da6c802]2870        default: // case COLOUR_BY_NONE:
2871            AddQuad = &GfxCore::AddQuadrilateral;
2872            AddPoly = &GfxCore::AddPolyline;
2873            break;
2874    }
2875
[d2fcc9b]2876    InvalidateList(LIST_UNDERGROUND_LEGS);
[c61aa79]2877    InvalidateList(LIST_SURFACE_LEGS);
[d2fcc9b]2878    InvalidateList(LIST_TUBES);
[da6c802]2879
2880    ForceRefresh();
2881}
2882
[6a4cdcb6]2883bool GfxCore::ExportMovie(const wxString & fnm)
2884{
2885    int width;
2886    int height;
2887    GetSize(&width, &height);
[028829f]2888    // Round up to next multiple of 2 (required by ffmpeg).
2889    width += (width & 1);
[6a4cdcb6]2890    height += (height & 1);
2891
[75d4a2b]2892    movie = new MovieMaker();
[6a4cdcb6]2893
[98a3786]2894    // FIXME: This should really use fn_str() - currently we probably can't
2895    // save to a Unicode path on wxmsw.
[75d4a2b]2896    if (!movie->Open(fnm.mb_str(), width, height)) {
[091069f]2897        wxGetApp().ReportError(wxString(movie->get_error_string(), wxConvUTF8));
[75d4a2b]2898        delete movie;
[81f1266]2899        movie = NULL;
[6a4cdcb6]2900        return false;
2901    }
[f433fda]2902
[d10d369]2903    PlayPres(1);
[6a4cdcb6]2904    return true;
2905}
[223f1ad]2906
[ce403f1]2907void
2908GfxCore::OnPrint(const wxString &filename, const wxString &title,
2909                 const wxString &datestamp)
2910{
2911    svxPrintDlg * p;
2912    p = new svxPrintDlg(m_Parent, filename, title, datestamp,
2913                        m_PanAngle, m_TiltAngle,
[5940815]2914                        m_Names, m_Crosses, m_Legs, m_Surface,
2915                        true);
[ce403f1]2916    p->Show(TRUE);
2917}
2918
[5940815]2919void
[223f1ad]2920GfxCore::OnExport(const wxString &filename, const wxString &title)
2921{
[5940815]2922    svxPrintDlg * p;
[5627cbb]2923    p = new svxPrintDlg(m_Parent, filename, title, wxString(),
[5940815]2924                        m_PanAngle, m_TiltAngle,
2925                        m_Names, m_Crosses, m_Legs, m_Surface,
2926                        false);
2927    p->Show(TRUE);
[223f1ad]2928}
[e2c1671]2929
2930static wxCursor
2931make_cursor(const unsigned char * bits, const unsigned char * mask,
2932            int hotx, int hoty)
2933{
[b72f4b5]2934#if defined __WXMSW__ || defined __WXMAC__
[7f3fe6d]2935    wxBitmap cursor_bitmap(reinterpret_cast<const char *>(bits), 32, 32);
2936    wxBitmap mask_bitmap(reinterpret_cast<const char *>(mask), 32, 32);
2937    cursor_bitmap.SetMask(new wxMask(mask_bitmap));
[e2c1671]2938    wxImage cursor_image = cursor_bitmap.ConvertToImage();
2939    cursor_image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_X, hotx);
2940    cursor_image.SetOption(wxIMAGE_OPTION_CUR_HOTSPOT_Y, hoty);
[7f3fe6d]2941    return wxCursor(cursor_image);
[e2c1671]2942#else
2943    return wxCursor((const char *)bits, 32, 32, hotx, hoty,
2944                    (const char *)mask, wxWHITE, wxBLACK);
2945#endif
2946}
2947
2948const
2949#include "hand.xbm"
2950const
2951#include "handmask.xbm"
2952
2953const
2954#include "brotate.xbm"
2955const
2956#include "brotatemask.xbm"
2957
2958const
2959#include "vrotate.xbm"
2960const
2961#include "vrotatemask.xbm"
2962
2963const
2964#include "rotate.xbm"
2965const
2966#include "rotatemask.xbm"
2967
[ecf2d23]2968const
2969#include "rotatezoom.xbm"
2970const
2971#include "rotatezoommask.xbm"
2972
[e2c1671]2973void
2974GfxCore::SetCursor(GfxCore::cursor new_cursor)
2975{
2976    // Check if we're already showing that cursor.
2977    if (current_cursor == new_cursor) return;
2978
2979    current_cursor = new_cursor;
2980    switch (current_cursor) {
2981        case GfxCore::CURSOR_DEFAULT:
2982            GLACanvas::SetCursor(wxNullCursor);
2983            break;
2984        case GfxCore::CURSOR_POINTING_HAND:
2985            GLACanvas::SetCursor(wxCursor(wxCURSOR_HAND));
2986            break;
2987        case GfxCore::CURSOR_DRAGGING_HAND:
2988            GLACanvas::SetCursor(make_cursor(hand_bits, handmask_bits, 12, 18));
2989            break;
2990        case GfxCore::CURSOR_HORIZONTAL_RESIZE:
2991            GLACanvas::SetCursor(wxCursor(wxCURSOR_SIZEWE));
2992            break;
2993        case GfxCore::CURSOR_ROTATE_HORIZONTALLY:
2994            GLACanvas::SetCursor(make_cursor(rotate_bits, rotatemask_bits, 15, 15));
2995            break;
2996        case GfxCore::CURSOR_ROTATE_VERTICALLY:
2997            GLACanvas::SetCursor(make_cursor(vrotate_bits, vrotatemask_bits, 15, 15));
2998            break;
2999        case GfxCore::CURSOR_ROTATE_EITHER_WAY:
3000            GLACanvas::SetCursor(make_cursor(brotate_bits, brotatemask_bits, 15, 15));
3001            break;
3002        case GfxCore::CURSOR_ZOOM:
3003            GLACanvas::SetCursor(wxCursor(wxCURSOR_MAGNIFIER));
3004            break;
[ecf2d23]3005        case GfxCore::CURSOR_ZOOM_ROTATE:
3006            GLACanvas::SetCursor(make_cursor(rotatezoom_bits, rotatezoommask_bits, 15, 15));
3007            break;
[e2c1671]3008    }
3009}
[6b061db]3010
3011bool GfxCore::MeasuringLineActive() const
3012{
3013    if (Animating()) return false;
3014    return (m_here.IsValid() && !m_here_is_temporary) || m_there.IsValid();
3015}
[acdb8aa]3016
3017bool GfxCore::HandleRClick(wxPoint point)
3018{
3019    if (PointWithinCompass(point)) {
3020        // Pop up menu.
3021        wxMenu menu;
[055bfc58]3022        menu.Append(menu_ORIENT_MOVE_NORTH, wmsg(/*View &North*/240));
3023        menu.Append(menu_ORIENT_MOVE_EAST, wmsg(/*View &East*/241));
3024        menu.Append(menu_ORIENT_MOVE_SOUTH, wmsg(/*View &South*/242));
3025        menu.Append(menu_ORIENT_MOVE_WEST, wmsg(/*View &West*/243));
3026        menu.AppendSeparator();
[acdb8aa]3027        menu.AppendCheckItem(menu_IND_COMPASS, wmsg(/*&Hide Compass*/344));
3028        menu.AppendCheckItem(menu_CTL_DEGREES, wmsg(/*&Degrees*/343));
3029        menu.Connect(wxEVT_COMMAND_MENU_SELECTED, (wxObjectEventFunction)&MainFrm::ProcessEvent, NULL, m_Parent);
3030        PopupMenu(&menu);
3031        return true;
3032    }
3033
3034    if (PointWithinClino(point)) {
3035        // Pop up menu.
3036        wxMenu menu;
[055bfc58]3037        menu.Append(menu_ORIENT_PLAN, wmsg(/*&Plan View*/248));
3038        menu.Append(menu_ORIENT_ELEVATION, wmsg(/*Ele&vation*/249));
3039        menu.AppendSeparator();
[acdb8aa]3040        menu.AppendCheckItem(menu_IND_CLINO, wmsg(/*&Hide Clino*/384));
3041        menu.AppendCheckItem(menu_CTL_DEGREES, wmsg(/*&Degrees*/343));
3042        menu.Connect(wxEVT_COMMAND_MENU_SELECTED, (wxObjectEventFunction)&MainFrm::ProcessEvent, NULL, m_Parent);
3043        PopupMenu(&menu);
3044        return true;
3045    }
3046
3047    if (PointWithinScaleBar(point)) {
3048        // Pop up menu.
3049        wxMenu menu;
3050        menu.AppendCheckItem(menu_IND_SCALE_BAR, wmsg(/*&Hide scale bar*/385));
3051        menu.AppendCheckItem(menu_CTL_METRIC, wmsg(/*&Metric*/342));
3052        menu.Connect(wxEVT_COMMAND_MENU_SELECTED, (wxObjectEventFunction)&MainFrm::ProcessEvent, NULL, m_Parent);
3053        PopupMenu(&menu);
3054        return true;
3055    }
3056
3057#if 0 // FIXME: Don't yet have PointWithinColourKey() method.
3058    if (PointWithinColourKey(point)) {
3059        // Pop up menu.
3060        wxMenu menu;
[97ea48d]3061        menu.AppendCheckItem(menu_IND_COLOUR_KEY, wmsg(/*&Hide colour key*/386));
[acdb8aa]3062        menu.Connect(wxEVT_COMMAND_MENU_SELECTED, (wxObjectEventFunction)&MainFrm::OnToggleMetric, NULL, m_Parent);
3063        PopupMenu(&menu);
3064        return true;
3065    }
3066#endif
3067
3068    return false;
3069}
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