source: git/src/gla.h @ 0874c07e

RELEASE/1.1RELEASE/1.2debug-cidebug-ci-sanitisersfaster-cavernloglog-selectstereostereo-2025walls-datawalls-data-hanging-as-warningwarn-only-for-hanging-survey
Last change on this file since 0874c07e was 6adffadf, checked in by Olly Betts <olly@…>, 20 years ago

Fix crosses to work much better. Not a total fix - their position in the Z buffer doesn't
seem to be quite right, and they're rather slow to plot.

git-svn-id: file:///home/survex-svn/survex/branches/survex-1_1@2875 4b37db11-9a0c-4f06-9ece-9ab7cdaee568

  • Property mode set to 100644
File size: 6.0 KB
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1//
2//  gla.h
3//
4//  Header file for the GLA abstraction layer.
5//
6//  Copyright (C) 2002 Mark R. Shinwell.
7//  Copyright (C) 2003,2004 Olly Betts
8//
9//  This program is free software; you can redistribute it and/or modify
10//  it under the terms of the GNU General Public License as published by
11//  the Free Software Foundation; either version 2 of the License, or
12//  (at your option) any later version.
13//
14//  This program is distributed in the hope that it will be useful,
15//  but WITHOUT ANY WARRANTY; without even the implied warranty of
16//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17//  GNU General Public License for more details.
18//
19//  You should have received a copy of the GNU General Public License
20//  along with this program; if not, write to the Free Software
21//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
22//
23
24// Use texture mapped fonts (lots faster, at least with hardware 3d)
25#define USE_FNT
26
27#include "wx.h"
28#include "aventypes.h"
29#include "quaternion.h"
30
31#ifdef USE_FNT
32#include "fnt.h"
33#endif
34
35class GfxCore;
36
37wxString GetGLSystemDescription();
38
39#define GLA_DEBUG 1
40
41typedef Double glaCoord;
42typedef GLuint glaList;
43
44class GLAPoint {
45    glaCoord xc, yc, zc;
46
47public:
48    GLAPoint(glaCoord x, glaCoord y, glaCoord z) : xc(x), yc(y), zc(z) {}
49    ~GLAPoint() {}
50
51    glaCoord GetX() { return xc; }
52    glaCoord GetY() { return yc; }
53    glaCoord GetZ() { return zc; }
54};
55
56// Colours for drawing.  Don't reorder these!
57enum gla_colour {
58    col_BLACK = 0,
59    col_GREY,
60    col_LIGHT_GREY,
61    col_LIGHT_GREY_2,
62    col_DARK_GREY,
63    col_WHITE,
64    col_TURQUOISE,
65    col_GREEN,
66    col_INDICATOR_1,
67    col_INDICATOR_2,
68    col_YELLOW,
69    col_RED,
70    col_LAST // must be the last entry here
71};
72
73class GLAPen {
74    friend class GLACanvas; // allow direct access to components
75
76    double components[3]; // red, green, blue
77
78public:
79    GLAPen();
80    ~GLAPen();
81
82    void SetColour(double red, double green, double blue); // arguments in range 0 to 1.0
83    void Interpolate(const GLAPen&, double how_far);
84
85    double GetRed() const;
86    double GetGreen() const;
87    double GetBlue() const;
88};
89
90#ifdef AVENGL
91class GLACanvas : public wxGLCanvas {
92#else
93class GLACanvas : public wxWindow {
94#endif
95
96#ifdef GLA_DEBUG
97    int m_Vertices;
98#endif
99
100#ifdef AVENGL
101    GLdouble modelview_matrix[16];
102    GLdouble projection_matrix[16];
103    GLint viewport[4];
104#endif
105
106    // Viewing volume diameter:
107    glaCoord m_VolumeDiameter;
108
109    // Parameters for plotting data:
110    Quaternion m_Rotation;
111    Double m_Scale;
112    public: // FIXME
113    struct {
114        Double x;
115        Double y;
116        Double z;
117    } m_Translation;
118    private:
119
120#ifdef USE_FNT
121    fntTexFont m_Font;
122#else
123    static void * const m_Font;
124    static const int m_FontSize;
125#endif
126
127    GLUquadric* m_Quadric;
128
129    GLuint m_Texture;
130
131    bool m_Textured;
132    bool m_Perspective;
133    bool m_Fog;
134    bool m_AntiAlias;
135
136public:
137    GLACanvas(wxWindow* parent, int id, const wxPoint& posn, wxSize size);
138    ~GLACanvas();
139
140    void FirstShow();
141
142    void Clear();
143    void StartDrawing();
144    void FinishDrawing();
145
146    void SetVolumeDiameter(glaCoord diameter);
147    void SetDataTransform();
148    void SetIndicatorTransform();
149
150    glaList CreateList(GfxCore*, void (GfxCore::*generator)());
151    void DeleteList(glaList l);
152    void DrawList(glaList l);
153
154    void SetBackgroundColour(float red, float green, float blue);
155    void SetColour(const GLAPen& pen, double rgb_scale);
156    void SetColour(const GLAPen& pen);
157    void SetColour(gla_colour colour);
158
159    void DrawText(glaCoord x, glaCoord y, glaCoord z, const wxString& str);
160    void DrawIndicatorText(int x, int y, const wxString& str);
161    void GetTextExtent(const wxString& str, int * x_ext, int * y_ext);
162
163    void BeginQuadrilaterals();
164    void EndQuadrilaterals();
165    void BeginLines();
166    void EndLines();
167    void BeginTriangleStrip();
168    void EndTriangleStrip();
169    void BeginTriangles();
170    void EndTriangles();
171    void BeginPolyline();
172    void EndPolyline();
173    void BeginPolygon();
174    void EndPolygon();
175    void BeginBlobs();
176    void EndBlobs();
177
178    void DrawRectangle(gla_colour edge, gla_colour fill,
179                       glaCoord x0, glaCoord y0, glaCoord w, glaCoord h);
180    void DrawShadedRectangle(const GLAPen & fill_bot, const GLAPen & fill_top,
181                             glaCoord x0, glaCoord y0, glaCoord w, glaCoord h);
182    void DrawCircle(gla_colour edge, gla_colour fill, glaCoord cx, glaCoord cy, glaCoord radius);
183    void DrawSemicircle(gla_colour edge, gla_colour fill, glaCoord cx, glaCoord cy, glaCoord radius, glaCoord start);
184    void DrawTriangle(gla_colour edge, gla_colour fill, GLAPoint* vertices);
185
186    void DrawBlob(glaCoord x, glaCoord y, glaCoord z);
187    void DrawRing(glaCoord x, glaCoord y);
188
189    void PlaceVertex(glaCoord x, glaCoord y, glaCoord z);
190    void PlaceIndicatorVertex(glaCoord x, glaCoord y);
191
192    void PlaceNormal(glaCoord x, glaCoord y, glaCoord z);
193
194    void EnableDashedLines();
195    void DisableDashedLines();
196
197    void EnableSmoothPolygons();
198    void DisableSmoothPolygons();
199
200    void SetRotation(Quaternion&);
201    void SetScale(Double);
202    void SetTranslation(Double, Double, Double);
203    void AddTranslation(Double, Double, Double);
204    void AddTranslationScreenCoordinates(int dx, int dy);
205
206    bool Transform(Double x, Double y, Double z, Double* x_out, Double* y_out, Double* z_out);
207    void ReverseTransform(Double x, Double y, Double* x_out, Double* y_out, Double* z_out);
208
209    int GetFontSize() const { return m_Font.getFontSize(); }
210
211    Double SurveyUnitsAcrossViewport();
212
213    void ToggleTextured();
214    bool GetTextured() const { return m_Textured; }
215
216    void TogglePerspective() { m_Perspective = !m_Perspective; }
217    bool GetPerspective() const { return m_Perspective; }
218
219    void ToggleFog() { m_Fog = !m_Fog; }
220    bool GetFog() const { return m_Fog; }
221
222    void ToggleAntiAlias() { m_AntiAlias = !m_AntiAlias; }
223    bool GetAntiAlias() const { return m_AntiAlias; }
224
225    bool SaveScreenshot(const wxString & fnm, int type) const;
226};
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