1 | // |
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2 | // gla.h |
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3 | // |
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4 | // Header file for the GLA abstraction layer. |
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5 | // |
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6 | // Copyright (C) 2002 Mark R. Shinwell. |
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7 | // Copyright (C) 2003,2004,2005,2006,2007 Olly Betts |
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8 | // |
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9 | // This program is free software; you can redistribute it and/or modify |
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10 | // it under the terms of the GNU General Public License as published by |
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11 | // the Free Software Foundation; either version 2 of the License, or |
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12 | // (at your option) any later version. |
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13 | // |
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14 | // This program is distributed in the hope that it will be useful, |
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15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | // GNU General Public License for more details. |
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18 | // |
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19 | // You should have received a copy of the GNU General Public License |
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20 | // along with this program; if not, write to the Free Software |
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21 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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22 | // |
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23 | |
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24 | // Use texture mapped fonts (lots faster, at least with hardware 3d) |
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25 | #define USE_FNT |
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26 | |
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27 | #include <string> |
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28 | #include <vector> |
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29 | |
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30 | using namespace std; |
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31 | |
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32 | #include "wx.h" |
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33 | #include "aventypes.h" |
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34 | #include "vector3.h" |
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35 | |
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36 | #ifdef USE_FNT |
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37 | #include "fnt.h" |
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38 | #endif |
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39 | |
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40 | class GfxCore; |
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41 | |
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42 | string GetGLSystemDescription(); |
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43 | |
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44 | // #define GLA_DEBUG |
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45 | |
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46 | typedef Double glaCoord; |
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47 | |
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48 | // Colours for drawing. Don't reorder these! |
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49 | enum gla_colour { |
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50 | col_BLACK = 0, |
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51 | col_GREY, |
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52 | col_LIGHT_GREY, |
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53 | col_LIGHT_GREY_2, |
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54 | col_DARK_GREY, |
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55 | col_WHITE, |
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56 | col_TURQUOISE, |
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57 | col_GREEN, |
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58 | col_INDICATOR_1, |
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59 | col_INDICATOR_2, |
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60 | col_YELLOW, |
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61 | col_RED, |
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62 | col_BLUE, |
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63 | col_LAST // must be the last entry here |
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64 | }; |
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65 | |
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66 | class GLAPen { |
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67 | friend class GLACanvas; // allow direct access to components |
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68 | |
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69 | double components[3]; // red, green, blue |
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70 | |
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71 | public: |
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72 | GLAPen(); |
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73 | ~GLAPen(); |
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74 | |
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75 | void SetColour(double red, double green, double blue); // arguments in range 0 to 1.0 |
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76 | void Interpolate(const GLAPen&, double how_far); |
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77 | |
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78 | double GetRed() const; |
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79 | double GetGreen() const; |
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80 | double GetBlue() const; |
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81 | }; |
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82 | |
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83 | const unsigned int INVALIDATE_ON_SCALE = 1; |
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84 | const unsigned int NEVER_CACHE = 2; |
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85 | |
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86 | class GLAList { |
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87 | GLuint gl_list; |
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88 | unsigned int flags; |
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89 | public: |
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90 | GLAList() : gl_list(0), flags(0) { } |
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91 | GLAList(GLuint gl_list_, unsigned int flags_) |
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92 | : gl_list(gl_list_), flags(flags_) { } |
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93 | bool test_flag(unsigned int mask) const { return flags & mask; } |
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94 | operator bool() { return gl_list != 0; } |
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95 | void DrawList() const; |
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96 | void InvalidateList(); |
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97 | }; |
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98 | |
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99 | class GLACanvas : public wxGLCanvas { |
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100 | #ifdef GLA_DEBUG |
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101 | int m_Vertices; |
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102 | #endif |
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103 | |
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104 | GLdouble modelview_matrix[16]; |
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105 | GLdouble projection_matrix[16]; |
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106 | GLint viewport[4]; |
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107 | |
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108 | // Viewing volume diameter: |
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109 | glaCoord m_VolumeDiameter; |
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110 | |
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111 | // Parameters for plotting data: |
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112 | Double m_Pan, m_Tilt; |
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113 | Double m_Scale; |
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114 | Vector3 m_Translation; |
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115 | |
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116 | #ifdef USE_FNT |
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117 | fntTexFont m_Font; |
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118 | #else |
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119 | static void * const m_Font; |
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120 | static const int m_FontSize; |
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121 | #endif |
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122 | |
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123 | GLUquadric* m_Quadric; |
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124 | |
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125 | GLuint m_Texture; |
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126 | GLuint m_CrossTexture; |
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127 | |
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128 | bool m_SmoothShading; |
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129 | bool m_Textured; |
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130 | bool m_Perspective; |
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131 | bool m_Fog; |
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132 | bool m_AntiAlias; |
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133 | bool glpoint_ok; |
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134 | bool glpoint_sprite; |
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135 | |
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136 | vector<GLAList> drawing_lists; |
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137 | mutable unsigned int list_flags; |
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138 | |
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139 | public: |
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140 | GLACanvas(wxWindow* parent, int id); |
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141 | ~GLACanvas(); |
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142 | |
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143 | void FirstShow(); |
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144 | |
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145 | void Clear(); |
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146 | void StartDrawing(); |
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147 | void FinishDrawing(); |
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148 | |
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149 | void SetVolumeDiameter(glaCoord diameter); |
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150 | void SetDataTransform(); |
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151 | void SetIndicatorTransform(); |
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152 | |
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153 | void DrawList(unsigned int l); |
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154 | void DrawList2D(unsigned int l, glaCoord x, glaCoord y, Double rotation); |
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155 | void InvalidateList(unsigned int l); |
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156 | virtual void GenerateList(unsigned int l) = 0; |
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157 | |
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158 | void SetBackgroundColour(float red, float green, float blue); |
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159 | void SetColour(const GLAPen& pen, double rgb_scale); |
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160 | void SetColour(const GLAPen& pen); |
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161 | void SetColour(gla_colour colour); |
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162 | |
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163 | void DrawText(glaCoord x, glaCoord y, glaCoord z, const wxString& str); |
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164 | void DrawIndicatorText(int x, int y, const wxString& str); |
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165 | void GetTextExtent(const wxString& str, int * x_ext, int * y_ext); |
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166 | |
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167 | void BeginQuadrilaterals(); |
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168 | void EndQuadrilaterals(); |
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169 | void BeginLines(); |
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170 | void EndLines(); |
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171 | void BeginTriangleStrip(); |
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172 | void EndTriangleStrip(); |
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173 | void BeginTriangles(); |
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174 | void EndTriangles(); |
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175 | void BeginPolyline(); |
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176 | void EndPolyline(); |
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177 | void BeginPolygon(); |
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178 | void EndPolygon(); |
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179 | void BeginBlobs(); |
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180 | void EndBlobs(); |
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181 | void BeginCrosses(); |
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182 | void EndCrosses(); |
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183 | |
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184 | void DrawRectangle(gla_colour edge, gla_colour fill, |
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185 | glaCoord x0, glaCoord y0, glaCoord w, glaCoord h); |
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186 | void DrawShadedRectangle(const GLAPen & fill_bot, const GLAPen & fill_top, |
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187 | glaCoord x0, glaCoord y0, glaCoord w, glaCoord h); |
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188 | void DrawCircle(gla_colour edge, gla_colour fill, glaCoord cx, glaCoord cy, glaCoord radius); |
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189 | void DrawSemicircle(gla_colour edge, gla_colour fill, glaCoord cx, glaCoord cy, glaCoord radius, glaCoord start); |
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190 | void DrawTriangle(gla_colour edge, gla_colour fill, |
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191 | const Vector3 &p0, const Vector3 &p1, const Vector3 &p2); |
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192 | |
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193 | void DrawBlob(glaCoord x, glaCoord y, glaCoord z); |
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194 | void DrawBlob(glaCoord x, glaCoord y); |
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195 | void DrawCross(glaCoord x, glaCoord y, glaCoord z); |
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196 | void DrawRing(glaCoord x, glaCoord y); |
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197 | |
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198 | void PlaceVertex(const Vector3 & v) { |
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199 | PlaceVertex(v.GetX(), v.GetY(), v.GetZ()); |
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200 | } |
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201 | void PlaceVertex(glaCoord x, glaCoord y, glaCoord z); |
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202 | void PlaceIndicatorVertex(glaCoord x, glaCoord y); |
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203 | |
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204 | void PlaceNormal(const Vector3 &v); |
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205 | |
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206 | void EnableDashedLines(); |
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207 | void DisableDashedLines(); |
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208 | |
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209 | void EnableSmoothPolygons(bool filled); |
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210 | void DisableSmoothPolygons(); |
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211 | |
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212 | void SetRotation(double pan, double tilt) { |
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213 | m_Pan = pan; |
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214 | m_Tilt = tilt; |
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215 | } |
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216 | void SetScale(Double); |
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217 | void SetTranslation(const Vector3 &v) { |
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218 | m_Translation = v; |
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219 | } |
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220 | void AddTranslation(const Vector3 &v) { |
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221 | m_Translation += v; |
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222 | } |
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223 | const Vector3 & GetTranslation() const { |
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224 | return m_Translation; |
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225 | } |
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226 | void AddTranslationScreenCoordinates(int dx, int dy); |
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227 | |
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228 | bool Transform(const Vector3 & v, Double* x_out, Double* y_out, Double* z_out) const; |
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229 | void ReverseTransform(Double x, Double y, Double* x_out, Double* y_out, Double* z_out) const; |
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230 | |
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231 | #ifdef USE_FNT |
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232 | int GetFontSize() const { return m_Font.getFontSize(); } |
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233 | #else |
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234 | int GetFontSize() const { return m_FontSize; } |
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235 | #endif |
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236 | |
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237 | void ToggleSmoothShading(); |
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238 | bool GetSmoothShading() const { return m_SmoothShading; } |
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239 | |
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240 | Double SurveyUnitsAcrossViewport() const; |
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241 | |
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242 | void ToggleTextured(); |
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243 | bool GetTextured() const { return m_Textured; } |
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244 | |
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245 | void TogglePerspective() { m_Perspective = !m_Perspective; } |
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246 | bool GetPerspective() const { return m_Perspective; } |
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247 | |
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248 | void ToggleFog() { m_Fog = !m_Fog; } |
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249 | bool GetFog() const { return m_Fog; } |
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250 | |
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251 | void ToggleAntiAlias() { m_AntiAlias = !m_AntiAlias; } |
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252 | bool GetAntiAlias() const { return m_AntiAlias; } |
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253 | |
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254 | bool SaveScreenshot(const wxString & fnm, int type) const; |
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255 | }; |
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