[852] | 1 | /*
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| 2 | glh - is a platform-indepenedent C++ OpenGL helper library
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| 3 |
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| 4 |
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| 5 | Copyright (c) 2000 Cass Everitt
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| 6 | Copyright (c) 2000 NVIDIA Corporation
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| 7 | All rights reserved.
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| 8 |
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| 9 | Redistribution and use in source and binary forms, with or
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| 10 | without modification, are permitted provided that the following
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| 11 | conditions are met:
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| 12 |
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| 13 | * Redistributions of source code must retain the above
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| 14 | copyright notice, this list of conditions and the following
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| 15 | disclaimer.
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| 16 |
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| 17 | * Redistributions in binary form must reproduce the above
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| 18 | copyright notice, this list of conditions and the following
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| 19 | disclaimer in the documentation and/or other materials
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| 20 | provided with the distribution.
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| 21 |
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| 22 | * The names of contributors to this software may not be used
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| 23 | to endorse or promote products derived from this software
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| 24 | without specific prior written permission.
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| 25 |
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| 26 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| 27 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| 28 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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| 29 | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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| 30 | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 31 | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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| 32 | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| 33 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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| 34 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 35 | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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| 36 | ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| 37 | POSSIBILITY OF SUCH DAMAGE.
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| 38 |
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| 39 |
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| 40 | Cass Everitt - cass@r3.nu
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| 41 | */
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| 42 |
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| 43 | #ifndef GLH_GLUT_TEXT_H
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| 44 | #define GLH_GLUT_TEXT_H
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| 45 |
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| 46 | #include <glh/glh_obs.h>
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| 47 | #include <glh/glh_text.h>
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| 48 |
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| 49 | #ifdef MACOS
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| 50 | #include <GLUT/glut.h>
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| 51 | #else
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| 52 | #include <GL/glut.h>
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| 53 | #endif
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| 54 |
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| 55 | namespace glh
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| 56 | {
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| 57 |
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| 58 | struct glut_stroke_roman : font
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| 59 | {
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| 60 | glut_stroke_roman() : initialized(false) {}
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| 61 |
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| 62 | virtual ~glut_stroke_roman() { }
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| 63 |
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| 64 | struct glyph
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| 65 | {
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| 66 | float width;
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| 67 | display_list dl;
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| 68 | };
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| 69 |
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| 70 |
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| 71 | // get font metrics
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| 72 | virtual float get_ascent()
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| 73 | { return 119.05f; }
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| 74 | virtual float get_descent()
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| 75 | { return 33.33f; }
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| 76 | virtual float get_width(int i)
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| 77 | {
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| 78 | if(32 <= i && i <= 127)
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| 79 | {
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| 80 | if(! initialized) init();
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| 81 | return glyphs[i].width;
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| 82 | }
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| 83 | return 0;
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| 84 | }
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| 85 |
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| 86 | // draw
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| 87 | virtual void render(int i)
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| 88 | {
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| 89 | if(32 <= i && i <= 127)
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| 90 | {
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| 91 | if(! initialized) init();
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| 92 | glyphs[i].dl.call_list();
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| 93 | }
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| 94 | }
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| 95 |
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| 96 | virtual void initialize() { if(! initialized) init(); }
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| 97 |
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| 98 | bool initialized;
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| 99 | glyph glyphs[128];
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| 100 |
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| 101 | private:
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| 102 |
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| 103 | void init()
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| 104 | {
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| 105 | initialized = true;
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| 106 | GLfloat m[16];
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| 107 | glColorMask(0,0,0,0);
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| 108 | glDepthMask(0);
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| 109 | glStencilMask(0);
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| 110 | for(int i=32; i < 128; i++)
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| 111 | {
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| 112 | glPushMatrix();
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| 113 | glLoadIdentity();
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| 114 |
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| 115 | // build display list
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| 116 | glyphs[i].dl.new_list(GL_COMPILE_AND_EXECUTE);
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| 117 | glutStrokeCharacter(GLUT_STROKE_ROMAN, i);
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| 118 | glyphs[i].dl.end_list();
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| 119 | // get *float* character width (glut only returns integer width)
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| 120 | glGetFloatv(GL_MODELVIEW_MATRIX, m);
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| 121 | glyphs[i].width = m[12];
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| 122 |
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| 123 | glPopMatrix();
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| 124 | }
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| 125 | glColorMask(1,1,1,1);
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| 126 | glDepthMask(1);
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| 127 | glStencilMask(1);
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| 128 | }
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| 129 |
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| 130 | };
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| 131 |
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| 132 |
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| 133 | struct glut_stroke_mono_roman : font
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| 134 | {
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| 135 | glut_stroke_mono_roman() : initialized(false) {}
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| 136 |
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| 137 | virtual ~glut_stroke_mono_roman() { }
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| 138 |
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| 139 | struct glyph
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| 140 | {
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| 141 | display_list dl;
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| 142 | };
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| 143 |
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| 144 |
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| 145 | // get font metrics
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| 146 | virtual float get_ascent()
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| 147 | { return 119.05f; }
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| 148 | virtual float get_descent()
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| 149 | { return 33.33f; }
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| 150 | virtual float get_width(int i)
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| 151 | {
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| 152 | if(32 <= i && i <= 127)
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| 153 | {
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| 154 | if(! initialized) init();
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| 155 | return 104.76;
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| 156 | }
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| 157 | return 0;
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| 158 | }
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| 159 |
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| 160 | // draw
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| 161 | virtual void render(int i)
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| 162 | {
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| 163 | if(32 <= i && i <= 127)
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| 164 | {
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| 165 | if(! initialized) init();
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| 166 | glyphs[i].dl.call_list();
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| 167 | }
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| 168 | }
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| 169 |
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| 170 | virtual void initialize() { if(! initialized) init(); }
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| 171 |
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| 172 | bool initialized;
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| 173 | glyph glyphs[128];
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| 174 |
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| 175 | private:
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| 176 |
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| 177 | void init()
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| 178 | {
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| 179 | initialized = true;
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| 180 | for(int i=32; i < 128; i++)
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| 181 | {
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| 182 | // build display list
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| 183 | glyphs[i].dl.new_list(GL_COMPILE);
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| 184 | glutStrokeCharacter(GLUT_STROKE_MONO_ROMAN, i);
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| 185 | glyphs[i].dl.end_list();
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| 186 | }
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| 187 | }
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| 188 |
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| 189 | };
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| 190 |
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| 191 |
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| 192 |
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| 193 | }
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| 194 |
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| 195 | #endif
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