Mercurial > octave-nkf
annotate libinterp/corefcn/gl2ps-renderer.cc @ 19925:a20f86786abb
style fixes
* gl2ps-renderer.h, gl2ps-renderer.cc: Style fixes.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 02 Mar 2015 21:42:31 -0500 |
| parents | 00c3f2021cad |
| children | 1929d9218ac0 |
| rev | line source |
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1 /* |
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2 |
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3 Copyright (C) 2009-2015 Shai Ayal |
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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 the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 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 WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 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 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #include "error.h" |
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28 #include "gl2ps-renderer.h" |
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29 |
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30 #ifdef HAVE_GL2PS_H |
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31 |
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32 #include <cstdio> |
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33 |
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34 #include "lo-mappers.h" |
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35 #include "oct-locbuf.h" |
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36 #include "unwind-prot.h" |
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37 |
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38 #include "gl2ps.h" |
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39 #include "sysdep.h" |
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40 |
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41 void |
| 19925 | 42 glps_renderer::draw (const graphics_object& go, const std::string& print_cmd) |
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43 { |
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44 static bool in_draw = false; |
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45 static std::string old_print_cmd; |
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46 |
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47 if (!in_draw) |
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48 { |
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49 unwind_protect frame; |
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50 |
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51 frame.protect_var (in_draw); |
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52 |
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53 in_draw = true; |
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54 |
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55 GLint gl2ps_term; |
| 19925 | 56 if (term.find ("eps") != std::string::npos) |
| 57 gl2ps_term = GL2PS_EPS; | |
| 58 else if (term.find ("pdf") != std::string::npos) | |
| 59 gl2ps_term = GL2PS_PDF; | |
| 60 else if (term.find ("ps") != std::string::npos) | |
| 61 gl2ps_term = GL2PS_PS; | |
| 62 else if (term.find ("svg") != std::string::npos) | |
| 63 gl2ps_term = GL2PS_SVG; | |
| 64 else if (term.find ("pgf") != std::string::npos) | |
| 65 gl2ps_term = GL2PS_PGF; | |
| 66 else if (term.find ("tex") != std::string::npos) | |
| 67 gl2ps_term = GL2PS_TEX; | |
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68 else |
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69 { |
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70 error ("gl2ps-renderer::draw: Unknown terminal %s", term.c_str ()); |
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71 return; |
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72 } |
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73 |
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74 GLint gl2ps_text = 0; |
| 19925 | 75 if (term.find ("notxt") != std::string::npos) |
| 76 gl2ps_text = GL2PS_NO_TEXT; | |
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77 |
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78 // Default sort order optimizes for 3D plots |
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79 GLint gl2ps_sort = GL2PS_BSP_SORT; |
| 19925 | 80 |
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81 // For 2D plots we can use a simpler Z-depth sorting algorithm |
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82 if (term.find ("is2D") != std::string::npos) |
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83 gl2ps_sort = GL2PS_SIMPLE_SORT; |
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84 |
| 19925 | 85 GLint state = GL2PS_OVERFLOW; |
| 86 GLint buffsize = 0; | |
| 87 | |
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88 while (state == GL2PS_OVERFLOW) |
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89 { |
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90 // For LaTeX output the fltk print process uses 2 drawnow() commands. |
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91 // The first one is for the pdf/ps/eps graph to be included. The |
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92 // print_cmd is saved as old_print_cmd. Then the second drawnow() |
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93 // outputs the tex-file and the graphic filename to be included is |
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94 // extracted from old_print_cmd. |
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96 std::string include_graph; |
| 19925 | 97 |
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98 size_t found_redirect = old_print_cmd.find (">"); |
| 19925 | 99 |
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100 if (found_redirect != std::string::npos) |
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101 include_graph = old_print_cmd.substr (found_redirect + 1); |
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102 else |
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103 include_graph = old_print_cmd; |
| 19925 | 104 |
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105 size_t n_begin = include_graph.find_first_not_of (" "); |
| 19925 | 106 |
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107 if (n_begin != std::string::npos) |
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108 { |
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109 size_t n_end = include_graph.find_last_not_of (" "); |
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110 include_graph = include_graph.substr (n_begin, |
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111 n_end - n_begin + 1); |
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112 } |
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113 else |
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114 include_graph = "foobar-inc"; |
| 19925 | 115 |
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116 buffsize += 1024*1024; |
| 19925 | 117 |
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118 // GL2PS_SILENT was removed to allow gl2ps printing errors on stderr |
| 19925 | 119 GLint ret = gl2psBeginPage ("glps_renderer figure", "Octave", 0, |
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120 gl2ps_term, gl2ps_sort, |
| 19925 | 121 (GL2PS_NO_BLENDING |
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122 | GL2PS_OCCLUSION_CULL |
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123 | GL2PS_BEST_ROOT |
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124 | gl2ps_text |
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125 | GL2PS_NO_PS3_SHADING |
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126 | GL2PS_USE_CURRENT_VIEWPORT), |
| 19925 | 127 GL_RGBA, 0, 0, 0, 0, 0, |
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128 buffsize, fp, include_graph.c_str ()); |
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129 if (ret == GL2PS_ERROR) |
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130 { |
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131 old_print_cmd.clear (); |
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132 error ("gl2ps-renderer::draw: gl2psBeginPage returned GL2PS_ERROR"); |
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133 return; |
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134 } |
| 19925 | 135 |
|
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136 old_print_cmd = print_cmd; |
| 19925 | 137 |
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138 opengl_renderer::draw (go); |
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139 |
| 19925 | 140 // Without glFinish () there may primitives be missing in the |
| 141 // gl2ps output. | |
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142 glFinish (); |
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143 |
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144 state = gl2psEndPage (); |
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145 |
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146 if (state == GL2PS_NO_FEEDBACK) |
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147 { |
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148 warning ("gl2ps-renderer::draw: empty feedback buffer and/or nothing else to print"); |
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149 } |
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150 else if (state == GL2PS_ERROR) |
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151 { |
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152 old_print_cmd.clear (); |
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153 error ("gl2ps-renderer::draw: gl2psEndPage returned GL2PS_ERROR"); |
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154 return; |
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155 } |
| 19925 | 156 |
|
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157 // Don't check state for GL2PS_UNINITIALIZED (should never happen) |
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158 // GL2PS_OVERFLOW (see while loop) or GL2PS_SUCCESS |
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159 } |
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160 } |
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161 else |
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162 opengl_renderer::draw (go); |
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163 } |
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164 |
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165 int |
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166 glps_renderer::alignment_to_mode (int ha, int va) const |
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167 { |
| 19925 | 168 int gl2psa = GL2PS_TEXT_BL; |
| 169 | |
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170 if (ha == 0) |
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171 { |
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172 if (va == 0 || va == 3) |
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173 gl2psa=GL2PS_TEXT_BL; |
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174 else if (va == 2) |
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175 gl2psa=GL2PS_TEXT_TL; |
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176 else if (va == 1) |
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177 gl2psa=GL2PS_TEXT_CL; |
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178 } |
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179 else if (ha == 2) |
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180 { |
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181 if (va == 0 || va == 3) |
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182 gl2psa=GL2PS_TEXT_BR; |
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183 else if (va == 2) |
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184 gl2psa=GL2PS_TEXT_TR; |
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185 else if (va == 1) |
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186 gl2psa=GL2PS_TEXT_CR; |
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187 } |
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188 else if (ha == 1) |
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189 { |
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190 if (va == 0 || va == 3) |
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191 gl2psa=GL2PS_TEXT_B; |
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192 else if (va == 2) |
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193 gl2psa=GL2PS_TEXT_T; |
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194 else if (va == 1) |
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195 gl2psa=GL2PS_TEXT_C; |
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196 } |
| 19925 | 197 |
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198 return gl2psa; |
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199 } |
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200 |
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201 Matrix |
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202 glps_renderer::render_text (const std::string& txt, |
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203 double x, double y, double z, |
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204 int ha, int va, double rotation) |
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205 { |
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206 if (txt.empty ()) |
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207 return Matrix (1, 4, 0.0); |
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208 |
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209 glRasterPos3d (x, y, z); |
| 19925 | 210 |
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211 gl2psTextOpt (txt.c_str (), fontname.c_str (), fontsize, |
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212 alignment_to_mode (ha, va), rotation); |
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213 |
|
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214 // FIXME? |
|
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215 // We have no way of getting a bounding box from gl2ps, so we use FreeType. |
|
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216 Matrix bbox; |
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217 uint8NDArray pixels; |
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218 text_to_pixels (txt, pixels, bbox, 0, 0, rotation); |
| 19925 | 219 |
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220 return bbox; |
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221 } |
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222 |
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223 void |
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224 glps_renderer::set_font (const base_properties& props) |
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225 { |
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226 opengl_renderer::set_font (props); |
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227 |
|
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228 fontsize = props.get ("fontsize_points").double_value (); |
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229 |
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230 caseless_str fn = props.get ("fontname").string_value (); |
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231 fontname = ""; |
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232 if (fn == "times" || fn == "times-roman") |
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233 fontname = "Times-Roman"; |
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234 else if (fn == "courier") |
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235 fontname = "Courier"; |
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236 else if (fn == "symbol") |
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237 fontname = "Symbol"; |
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238 else if (fn == "zapfdingbats") |
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239 fontname = "ZapfDingbats"; |
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240 else |
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241 fontname = "Helvetica"; |
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242 |
|
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243 // FIXME: add support for bold and italic |
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244 } |
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245 |
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246 template <typename T> |
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247 static void |
|
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248 draw_pixels (GLsizei w, GLsizei h, GLenum format, const T *data, float maxval) |
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249 { |
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250 OCTAVE_LOCAL_BUFFER (GLfloat, a, 3*w*h); |
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251 |
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252 // Convert to GL_FLOAT as it is the only type gl2ps accepts. |
| 18714 | 253 for (int i = 0; i < 3*w*h; i++) |
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254 a[i] = data[i] / maxval; |
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255 |
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256 gl2psDrawPixels (w, h, 0, 0, format, GL_FLOAT, a); |
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257 } |
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258 |
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259 void |
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260 glps_renderer::draw_pixels (GLsizei w, GLsizei h, GLenum format, |
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261 GLenum type, const GLvoid *data) |
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262 { |
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263 // gl2psDrawPixels only supports the GL_FLOAT type. |
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264 // Other formats, such as uint8, must be converted first. |
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265 if (type == GL_UNSIGNED_BYTE) |
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266 ::draw_pixels (w, h, format, static_cast<const GLubyte *> (data), 255.0f); |
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267 else if (type == GL_UNSIGNED_SHORT) |
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268 ::draw_pixels (w, h, format, static_cast<const GLushort *> (data), 65535.0f); |
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269 else |
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270 gl2psDrawPixels (w, h, 0, 0, format, type, data); |
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271 } |
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272 |
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273 void |
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274 glps_renderer::draw_text (const text::properties& props) |
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275 { |
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276 if (props.get_string ().is_empty ()) |
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277 return; |
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278 |
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279 set_font (props); |
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280 set_color (props.get_color_rgb ()); |
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281 |
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282 const Matrix pos = get_transform ().scale (props.get_data_position ()); |
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283 int halign = 0; |
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284 int valign = 0; |
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285 |
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286 if (props.horizontalalignment_is ("center")) |
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287 halign = 1; |
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288 else if (props.horizontalalignment_is ("right")) |
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289 halign = 2; |
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290 |
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291 if (props.verticalalignment_is ("top")) |
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292 valign = 2; |
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293 else if (props.verticalalignment_is ("baseline")) |
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294 valign = 3; |
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295 else if (props.verticalalignment_is ("middle")) |
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296 valign = 1; |
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297 |
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298 // FIXME: handle margin and surrounding box |
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299 |
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300 glRasterPos3d (pos(0), pos(1), pos.numel () > 2 ? pos(2) : 0.0); |
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301 |
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302 octave_value string_prop = props.get_string (); |
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303 |
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304 string_vector sv = string_prop.all_strings (); |
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305 |
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306 std::string s = sv.join ("\n"); |
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307 |
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308 gl2psTextOpt (s.c_str (), fontname.c_str (), fontsize, |
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309 alignment_to_mode (halign, valign), props.get_rotation ()); |
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310 } |
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311 |
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312 static void |
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313 safe_pclose (FILE *f) |
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314 { |
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315 if (f) |
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316 octave_pclose (f); |
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317 } |
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318 |
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319 #endif |
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320 |
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321 void |
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322 gl2ps_print (const graphics_object& fig, const std::string& cmd, |
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323 const std::string& term) |
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324 { |
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325 #ifdef HAVE_GL2PS_H |
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326 |
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327 FILE *fp = octave_popen (cmd.c_str (), "w"); |
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328 |
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329 if (fp) |
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330 { |
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331 unwind_protect frame; |
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332 |
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333 frame.add_fcn (safe_pclose, fp); |
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334 |
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335 glps_renderer rend (fp, term); |
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336 |
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337 rend.draw (fig, cmd); |
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338 } |
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339 else |
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340 error ("print: failed to open pipe for gl2ps renderer"); |
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341 |
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342 #else |
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343 |
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344 error ("print: printing not available without gl2ps library"); |
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345 |
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346 #endif |
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347 } |