annotate libinterp/corefcn/gl-render.h @ 25863:8a6bf76abf31

eliminate some duplicate OpenGL drawing code * gl-render.h, gl-render.cc (opengl_renderer::draw_zoom_box, opengl_renderer::draw_zoom_rect): New functions. * GLCanvas.h, GLCanvas.cc (GLCanvas::m_renderer): New data member. (GLCanvas::draw, GLCanvas::do_getPixels): Use it instead of creating renderer locally. (GLCanvas::drawZoomRect): Delete. (GLCanvas::drawZoomBox): Set up parameters and call opengl_renderer::draw_zoom_box to eliminate code duplicated in __init_fltk__.cc. * __init_fltk__.cc (OpenGL_fltk::zoom_box_vertex): Delete. (OpenGL_fltk::overlay): Set up parameters and call opengl_renderer::draw_zoom_box to eliminate code duplicated in GLCanvas.cc.
author John W. Eaton <jwe@octave.org>
date Sat, 08 Sep 2018 08:03:36 -0400
parents e5a73a8c116c
children baeb93e9febc
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1 /*
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2
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3 Copyright (C) 2008-2018 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software: you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <https://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (octave_gl_render_h)
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24 #define octave_gl_render_h 1
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26 #include "octave-config.h"
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27
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28 #include "graphics.h"
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29 #include "oct-opengl.h"
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30 #include "text-renderer.h"
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31
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32 namespace octave
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33 {
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34 class
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35 OCTINTERP_API
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36 opengl_renderer
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37 {
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38 public:
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39
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40 opengl_renderer (opengl_functions& glfcns);
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42 // No copying!
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43
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44 opengl_renderer (const opengl_renderer&) = delete;
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45
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46 opengl_renderer& operator = (const opengl_renderer&) = delete;
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47
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48 virtual ~opengl_renderer (void) = default;
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50 opengl_functions& get_opengl_functions (void) const { return m_glfcns; }
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51
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52 virtual void draw (const graphics_object& go, bool toplevel = true);
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53
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54 virtual void draw (const Matrix& hlist, bool toplevel = false)
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55 {
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56 int len = hlist.numel ();
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57
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58 for (int i = len-1; i >= 0; i--)
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59 {
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60 graphics_object obj = gh_manager::get_object (hlist(i));
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61
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62 if (obj)
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63 draw (obj, toplevel);
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64 }
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65 }
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66
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67 virtual void set_viewport (int w, int h);
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68 virtual graphics_xform get_transform (void) const { return xform; }
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69 virtual uint8NDArray get_pixels (int width, int height);
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70
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71 virtual void draw_zoom_box (int width, int height,
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72 int x1, int y1, int x2, int y2,
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73 const Matrix& overlaycolor,
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74 double overlayalpha,
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75 const Matrix& bordercolor,
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76 double borderalpha, double borderwidth);
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77
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78 virtual void finish (void);
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79
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80 protected:
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81 virtual void draw_figure (const figure::properties& props);
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82 virtual void draw_axes (const axes::properties& props);
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83 virtual void draw_line (const line::properties& props);
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84 virtual void draw_surface (const surface::properties& props);
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85 virtual void draw_patch (const patch::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 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 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 end_marker (void);
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121 virtual void draw_marker (double x, double y, double z,
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122 const Matrix& lc, const Matrix& fc);
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123
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124 virtual void text_to_pixels (const std::string& txt,
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125 uint8NDArray& pixels,
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126 Matrix& bbox,
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127 int halign = 0, int valign = 0,
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128 double rotation = 0.0);
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129
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130 virtual void text_to_strlist (const std::string& txt,
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131 std::list<text_renderer::string>& lst,
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132 Matrix& bbox,
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133 int halign = 0, int valign = 0,
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diff changeset
134 double rotation = 0.0);
20623
2be59ab36110 Add method in gl_render to get a list of parsed ft_string (bug #31468)
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 20531
diff changeset
135
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136 virtual Matrix render_text (const std::string& txt,
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diff changeset
137 double x, double y, double z,
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138 int halign, int valign, double rotation = 0.0);
9403
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Michael Goffioul <michael.goffioul@gmail.com>
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139
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140 virtual void draw_pixels (int w, int h, const float *data);
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141 virtual void draw_pixels (int w, int h, const uint8_t *data);
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142 virtual void draw_pixels (int w, int h, const uint16_t *data);
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7dedfd70dd9f image printing for fltk backend
Shai Ayal <shaiay@users.sourceforge.net>
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143
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52c205a0ad88 Make linestyles compatible at larger linewidths (bug #48884).
Rik <rik@octave.org>
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144 virtual void render_grid (const double linewidth,
52c205a0ad88 Make linestyles compatible at larger linewidths (bug #48884).
Rik <rik@octave.org>
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145 const std::string& gridstyle,
22347
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Markus Mützel <markus.muetzel@gmx.de>
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146 const Matrix& gridcolor, const double gridalpha,
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147 const Matrix& ticks, double lim1, double lim2,
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148 double p1, double p1N, double p2, double p2N,
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149 int xyz, bool is_3D);
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Konstantinos Poulios <logari81@googlemail.com>
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150
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151 virtual void render_tickmarks (const Matrix& ticks, double lim1, double lim2,
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152 double p1, double p1N, double p2, double p2N,
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153 double dx, double dy, double dz,
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154 int xyz, bool doubleside);
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Konstantinos Poulios <logari81@googlemail.com>
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155
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156 virtual void render_ticktexts (const Matrix& ticks,
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157 const string_vector& ticklabels,
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diff changeset
158 double lim1, double lim2,
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diff changeset
159 double p1, double p2,
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160 int xyz, int ha, int va,
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161 int& wmax, int& hmax);
12126
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Konstantinos Poulios <logari81@googlemail.com>
parents: 11586
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162
25863
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John W. Eaton <jwe@octave.org>
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163 virtual void draw_zoom_rect (int x1, int y1, int x2, int y2);
8a6bf76abf31 eliminate some duplicate OpenGL drawing code
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164
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165 private:
21194
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166
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167 void init_maxlights (void);
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168
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169 std::string get_string (GLenum id) const;
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170
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171 bool is_nan_or_inf (double x, double y, double z) const
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172 {
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173 return (math::isnan (x) || math::isnan (y)
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174 || math::isnan (z)
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175 || math::isinf (x) || math::isinf (y)
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176 || math::isinf (z));
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177 }
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178
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179 octave_uint8 clip_code (double x, double y, double z) const
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180 {
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181 return ((x < xmin ? 1 : 0)
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182 | (x > xmax ? 1 : 0) << 1
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183 | (y < ymin ? 1 : 0) << 2
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184 | (y > ymax ? 1 : 0) << 3
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185 | (z < zmin ? 1 : 0) << 4
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186 | (z > zmax ? 1 : 0) << 5
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187 | (is_nan_or_inf (x, y, z) ? 0 : 1) << 6);
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188 }
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parents:
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189
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190 void set_normal (int bfl_mode, const NDArray& n, int j, int i);
7825
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parents:
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191
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192 unsigned int make_marker_list (const std::string& m, double size,
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193 bool filled) const;
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194
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195 void draw_axes_planes (const axes::properties& props);
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196 void draw_axes_boxes (const axes::properties& props);
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197
23546
06805aabbdd1 Draw 2D axes primitives in the children stack order (bug #50750)
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 23535
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198 void draw_axes_grids (const axes::properties& props);
22331
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199 void draw_axes_x_grid (const axes::properties& props);
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200 void draw_axes_y_grid (const axes::properties& props);
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201 void draw_axes_z_grid (const axes::properties& props);
22192
20b225a3ebf8 Update to light (patch #8943)
Markus Mützel <markus.muetzel@gmx.de>
parents: 21824
diff changeset
202
22331
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203 void draw_axes_children (const axes::properties& props);
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204
22407
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Rik <rik@octave.org>
parents: 22396
diff changeset
205 void draw_all_lights (const base_properties& props,
34ce5be04942 maint: Style check C++ code in libinterp/.
Rik <rik@octave.org>
parents: 22396
diff changeset
206 std::list<graphics_object>& obj_list);
7869
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207
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208 protected:
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209
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210 opengl_functions& m_glfcns;
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211
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212 private:
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213
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214 // The graphics toolkit associated with the figure being rendered.
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215 graphics_toolkit toolkit;
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216
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217 // axes transformation data
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218 graphics_xform xform;
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219
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220 // axis limits in model scaled coordinate
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221 double xmin, xmax;
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222 double ymin, ymax;
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223 double zmin, zmax;
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224
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225 // Z projection limits in windows coordinate
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226 double xZ1, xZ2;
7833
8ff92634982d Add initial support for patch rendering through GLU tessellation (no transparency, no border, no markers yet).
Michael Goffioul <michael.goffioul@gmail.com>
parents: 7829
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227
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228 // call lists identifiers for markers
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229 unsigned int marker_id, filled_marker_id;
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230
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231 // camera information for primitive sorting and lighting
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232 ColumnVector camera_pos, camera_dir, view_vector;
20285
6db2ea5556a4 Make use of the axes "ticklabelinterpreter" property (bug #45438)
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 20232
diff changeset
233
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234 // interpreter to be used by text_to_pixels
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235 caseless_str interpreter;
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236
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237 text_renderer txt_renderer;
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238
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239 // light object present and visible
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240 unsigned int m_current_light;
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241 unsigned int m_max_lights;
21459
385b67d48dda Don't enable opengl lighting when no light object is present (bug #42006)
mmuetzel <markus.muetzel@gmx.de>
parents: 21353
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242
24523
501986e12b8b Implement "pickableparts" property (bug #52795).
Pantxo Diribarne <pantxo.diribarne@gmail.com>
parents: 24173
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243 // Indicate we are drawing for selection purpose
501986e12b8b Implement "pickableparts" property (bug #52795).
Pantxo Diribarne <pantxo.diribarne@gmail.com>
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244 bool selecting;
22331
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245 private:
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246 class patch_tesselator;
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247 };
22326
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John W. Eaton <jwe@octave.org>
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248 }
71dd9d5a5ecd move more new classes inside octave namespace
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249
7825
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Michael Goffioul <michael.goffioul@gmail.com>
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250 #endif