Mercurial > octave
annotate libinterp/corefcn/gl-render.h @ 30565:83f9f8bda883
maint: Merge stable to default.
author | John W. Eaton <jwe@octave.org> |
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date | Tue, 28 Dec 2021 18:59:33 -0500 |
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rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2008-2022 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
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25 |
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26 #if ! defined (octave_gl_render_h) |
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27 #define octave_gl_render_h 1 |
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28 |
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29 #include "octave-config.h" |
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30 |
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31 #include "graphics.h" |
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32 #include "text-renderer.h" |
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33 |
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34 namespace octave |
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35 { |
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36 class opengl_functions; |
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37 |
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38 class |
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39 OCTINTERP_API |
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40 opengl_renderer |
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41 { |
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42 public: |
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43 |
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44 opengl_renderer (opengl_functions& glfcns); |
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45 |
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46 // No copying! |
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47 |
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48 opengl_renderer (const opengl_renderer&) = delete; |
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49 |
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50 opengl_renderer& operator = (const opengl_renderer&) = delete; |
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51 |
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52 virtual ~opengl_renderer (void) = default; |
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53 |
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54 opengl_functions& get_opengl_functions (void) const { return m_glfcns; } |
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55 |
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56 virtual void draw (const graphics_object& go, bool toplevel = true); |
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57 |
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58 // The following version of the draw method is not declared virtual |
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59 // because no derived class overrides it. |
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60 |
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61 void draw (const Matrix& hlist, bool toplevel = false); |
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62 |
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63 virtual void set_viewport (int w, int h); |
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64 virtual void set_device_pixel_ratio (double dpr) { m_devpixratio = dpr; } |
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65 virtual Matrix get_viewport_scaled (void) const; |
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66 virtual graphics_xform get_transform (void) const { return m_xform; } |
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67 virtual uint8NDArray get_pixels (int width, int height); |
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68 |
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69 virtual void draw_zoom_box (int width, int height, |
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70 int x1, int y1, int x2, int y2, |
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71 const Matrix& overlaycolor, |
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72 double overlayalpha, |
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73 const Matrix& bordercolor, |
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74 double borderalpha, double borderwidth); |
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75 |
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76 virtual void finish (void); |
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77 |
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78 protected: |
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79 |
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80 virtual void draw_figure (const figure::properties& props); |
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81 virtual void draw_axes (const axes::properties& props); |
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82 virtual void draw_line (const line::properties& props); |
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83 virtual void draw_surface (const surface::properties& props); |
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84 virtual void draw_patch (const patch::properties& props); |
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85 virtual void draw_scatter (const scatter::properties& props); |
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86 virtual void draw_light (const light::properties& props); |
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87 virtual void draw_hggroup (const hggroup::properties& props); |
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88 virtual void draw_text (const text::properties& props); |
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89 virtual void draw_text_background (const text::properties& props, |
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90 bool do_rotate = false); |
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91 virtual void draw_image (const image::properties& props); |
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92 virtual void draw_uipanel (const uipanel::properties& props, |
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93 const graphics_object& go); |
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94 virtual void draw_uibuttongroup (const uibuttongroup::properties& props, |
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95 const graphics_object& go); |
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96 virtual void init_gl_context (bool enhanced, const Matrix& backgroundColor); |
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97 virtual void setup_opengl_transformation (const axes::properties& props); |
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98 |
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99 virtual void set_clipbox (double x1, double x2, double y1, double y2, |
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100 double z1, double z2); |
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101 virtual void set_clipping (bool on); |
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102 virtual void set_font (const base_properties& props); |
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103 virtual void set_color (const Matrix& c); |
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104 virtual void set_interpreter (const caseless_str& interp) |
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105 { |
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106 m_interpreter = interp; |
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107 } |
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108 virtual void set_linewidth (float w); |
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109 virtual void set_linestyle (const std::string& s, bool stipple = false, |
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110 double linewidth = 0.5); |
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111 virtual void set_linecap (const std::string&) { }; |
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112 virtual void set_linejoin (const std::string&) { }; |
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113 virtual void set_polygon_offset (bool on, float offset = 0.0f); |
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114 virtual void set_selecting (bool on) |
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115 { |
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116 m_selecting = on; |
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117 } |
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118 |
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119 virtual void init_marker (const std::string& m, double size, float width); |
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120 virtual void change_marker (const std::string& m, double size); |
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121 virtual void end_marker (void); |
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122 virtual void draw_marker (double x, double y, double z, |
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123 const Matrix& lc, const Matrix& fc, |
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124 const double la = 1.0, const double fa = 1.0); |
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125 |
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126 virtual void text_to_pixels (const std::string& txt, |
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127 uint8NDArray& pixels, |
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128 Matrix& bbox, |
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129 int halign = 0, int valign = 0, |
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130 double rotation = 0.0); |
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131 |
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132 virtual void text_to_strlist (const std::string& txt, |
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133 std::list<text_renderer::string>& lst, |
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134 Matrix& bbox, |
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135 int halign = 0, int valign = 0, |
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136 double rotation = 0.0); |
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137 |
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138 virtual Matrix render_text (const std::string& txt, |
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139 double x, double y, double z, |
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140 int halign, int valign, double rotation = 0.0); |
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141 |
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142 virtual void render_grid (const double linewidth, |
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143 const std::string& gridstyle, |
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144 const Matrix& gridcolor, const double gridalpha, |
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145 const Matrix& ticks, double lim1, double lim2, |
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146 double p1, double p1N, double p2, double p2N, |
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147 int xyz, bool is_3D); |
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148 |
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149 virtual void render_tickmarks (const Matrix& ticks, |
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150 double lim1, double lim2, |
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151 double p1, double p1N, double p2, double p2N, |
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152 double dx, double dy, double dz, |
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153 int xyz, bool doubleside); |
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154 |
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155 virtual void render_ticktexts (const Matrix& ticks, |
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156 const string_vector& ticklabels, |
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157 double lim1, double lim2, |
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158 double p1, double p2, |
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159 int xyz, int ha, int va, |
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160 int& wmax, int& hmax); |
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161 |
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162 virtual void draw_zoom_rect (int x1, int y1, int x2, int y2); |
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163 |
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164 //-------- |
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165 |
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166 opengl_functions& m_glfcns; |
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167 |
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168 // axis limits in model scaled coordinate |
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169 double m_xmin, m_xmax; |
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170 double m_ymin, m_ymax; |
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171 double m_zmin, m_zmax; |
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172 |
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173 // Factor used for translating Octave pixels to actual device pixels |
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174 double m_devpixratio; |
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175 |
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176 // axes transformation data |
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177 graphics_xform m_xform; |
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178 |
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179 private: |
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180 |
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181 class patch_tessellator; |
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182 |
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183 void init_maxlights (void); |
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184 |
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185 std::string get_string (unsigned int id) const; |
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186 |
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187 bool is_nan_or_inf (double x, double y, double z) const |
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188 { |
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189 return (math::isnan (x) || math::isnan (y) |
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190 || math::isnan (z) |
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191 || math::isinf (x) || math::isinf (y) |
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192 || math::isinf (z)); |
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193 } |
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194 |
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195 uint8_t clip_code (double x, double y, double z) const |
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196 { |
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197 return ((x < m_xmin ? 1 : 0) |
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198 | (x > m_xmax ? 1 : 0) << 1 |
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199 | (y < m_ymin ? 1 : 0) << 2 |
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200 | (y > m_ymax ? 1 : 0) << 3 |
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201 | (z < m_zmin ? 1 : 0) << 4 |
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202 | (z > m_zmax ? 1 : 0) << 5 |
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203 | (is_nan_or_inf (x, y, z) ? 0 : 1) << 6); |
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204 } |
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205 |
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206 void render_text (uint8NDArray pixels, Matrix bbox, |
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207 double x, double y, double z, double rotation); |
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208 |
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209 void set_normal (int bfl_mode, const NDArray& n, int j, int i); |
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210 |
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211 void set_ortho_coordinates (void); |
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212 |
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213 void restore_previous_coordinates (void); |
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214 |
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215 double points_to_pixels (const double val) const; |
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216 |
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217 unsigned int make_marker_list (const std::string& m, double size, |
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218 bool filled) const; |
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219 |
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220 void draw_axes_planes (const axes::properties& props); |
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221 void draw_axes_boxes (const axes::properties& props); |
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222 |
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223 void draw_axes_grids (const axes::properties& props); |
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224 void draw_axes_x_grid (const axes::properties& props); |
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225 void draw_axes_y_grid (const axes::properties& props); |
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226 void draw_axes_z_grid (const axes::properties& props); |
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227 |
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228 void draw_axes_children (const axes::properties& props); |
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229 |
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230 void draw_all_lights (const base_properties& props, |
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231 std::list<graphics_object>& obj_list); |
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233 void draw_texture_image (const octave_value cdata, |
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234 Matrix x, Matrix y, bool ortho = false); |
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235 |
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236 //-------- |
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237 |
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238 // The graphics m_toolkit associated with the figure being rendered. |
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239 graphics_toolkit m_toolkit; |
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241 // Z projection limits in windows coordinate |
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242 double m_xZ1, m_xZ2; |
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243 |
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244 // call lists identifiers for markers |
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245 unsigned int m_marker_id, m_filled_marker_id; |
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246 |
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247 // camera information for primitive sorting and lighting |
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248 ColumnVector m_camera_pos, m_camera_dir, m_view_vector; |
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249 |
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250 // interpreter to be used by text_to_pixels |
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251 caseless_str m_interpreter; |
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252 |
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253 text_renderer m_txt_renderer; |
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254 |
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255 // light object present and visible |
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256 unsigned int m_current_light; |
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257 unsigned int m_max_lights; |
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258 |
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259 // Indicate we are drawing for selection purpose |
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260 bool m_selecting; |
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261 |
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262 // Indicate we are drawing for printing purpose |
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263 bool m_printing; |
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264 }; |
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265 } |
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266 |
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267 #endif |