[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_H
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| 44 | #define GLH_GLUT_H
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| 45 |
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| 46 | // some helper functions and objects to
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| 47 | // make writing simple glut programs even easier! :-)
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| 48 | #ifndef _WIN32
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| 49 | #include <string.h>
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| 50 | #endif
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| 51 | #include <algorithm>
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| 52 | #include <list>
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| 53 |
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| 54 | #ifdef MACOS
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| 55 | #include <GLUT/glut.h>
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| 56 | #else
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| 57 | #include <GL/glut.h>
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| 58 | #endif
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| 59 |
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| 60 | #include <glh/glh_interactors.h>
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| 61 | #include <glh/glh_convenience.h>
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| 62 |
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| 63 | namespace glh
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| 64 | {
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| 65 |
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| 66 | class glut_interactor
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| 67 | {
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| 68 | public:
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| 69 | glut_interactor() { enabled = true; }
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| 70 |
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| 71 | virtual void display() {}
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| 72 | virtual void idle() {}
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| 73 | virtual void keyboard(unsigned char key, int x, int y) {}
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| 74 | virtual void menu_status(int status, int x, int y) {}
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| 75 | virtual void motion(int x, int y) {}
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| 76 | virtual void mouse(int button, int state, int x, int y) {}
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| 77 | virtual void passive_motion(int x, int y) {}
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| 78 | virtual void reshape(int w, int h) {}
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| 79 | virtual void special(int key, int x, int y) {}
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| 80 | virtual void timer(int value) {}
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| 81 | virtual void visibility(int v) {}
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| 82 |
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| 83 | virtual void enable() { enabled = true; }
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| 84 | virtual void disable() { enabled = false; }
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| 85 |
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| 86 | bool enabled;
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| 87 | };
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| 88 |
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| 89 | std::list<glut_interactor *> interactors;
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| 90 | bool propagate;
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| 91 |
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| 92 | void glut_display_function()
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| 93 | {
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| 94 | propagate = true;
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| 95 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 96 | (*it)->display();
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| 97 | }
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| 98 |
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| 99 | void glut_idle_function()
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| 100 | {
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| 101 | propagate = true;
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| 102 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 103 | (*it)->idle();
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| 104 | }
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| 105 |
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| 106 | void glut_keyboard_function(unsigned char k, int x, int y)
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| 107 | {
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| 108 | propagate = true;
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| 109 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 110 | (*it)->keyboard(k, x, y);
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| 111 | }
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| 112 |
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| 113 | void glut_menu_status_function(int status, int x, int y)
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| 114 | {
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| 115 | propagate = true;
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| 116 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 117 | (*it)->menu_status(status, x, y);
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| 118 | }
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| 119 |
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| 120 | void glut_motion_function(int x, int y)
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| 121 | {
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| 122 | propagate = true;
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| 123 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 124 | (*it)->motion(x, y);
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| 125 | }
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| 126 |
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| 127 | void glut_mouse_function(int button, int state, int x, int y)
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| 128 | {
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| 129 | propagate = true;
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| 130 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 131 | (*it)->mouse(button, state, x, y);
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| 132 | }
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| 133 |
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| 134 | void glut_passive_motion_function(int x, int y)
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| 135 | {
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| 136 | propagate = true;
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| 137 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 138 | (*it)->passive_motion(x, y);
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| 139 | }
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| 140 |
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| 141 | void glut_reshape_function(int w, int h)
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| 142 | {
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| 143 | propagate = true;
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| 144 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 145 | (*it)->reshape(w,h);
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| 146 | }
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| 147 |
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| 148 | void glut_special_function(int k, int x, int y)
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| 149 | {
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| 150 | propagate = true;
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| 151 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 152 | (*it)->special(k, x, y);
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| 153 | }
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| 154 |
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| 155 | void glut_timer_function(int v)
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| 156 | {
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| 157 | propagate = true;
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| 158 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 159 | (*it)->timer(v);
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| 160 | }
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| 161 |
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| 162 | void glut_visibility_function(int v)
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| 163 | {
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| 164 | propagate = true;
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| 165 | for(std::list<glut_interactor *>::iterator it=interactors.begin(); it != interactors.end() && propagate; it++)
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| 166 | (*it)->visibility(v);
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| 167 | }
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| 168 |
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| 169 | // stop processing the current event
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| 170 | inline void glut_event_processed()
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| 171 | {
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| 172 | propagate = false;
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| 173 | }
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| 174 |
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| 175 | inline void glut_helpers_initialize()
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| 176 | {
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| 177 | glutDisplayFunc(glut_display_function);
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| 178 | glutIdleFunc(0);
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| 179 | glutKeyboardFunc(glut_keyboard_function);
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| 180 | glutMenuStatusFunc(glut_menu_status_function);
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| 181 | glutMotionFunc(glut_motion_function);
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| 182 | glutMouseFunc(glut_mouse_function);
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| 183 | glutPassiveMotionFunc(glut_passive_motion_function);
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| 184 | glutReshapeFunc(glut_reshape_function);
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| 185 | glutSpecialFunc(glut_special_function);
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| 186 | glutVisibilityFunc(glut_visibility_function);
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| 187 | }
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| 188 |
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| 189 | inline void glut_remove_interactor(glut_interactor *gi)
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| 190 | {
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| 191 | if (interactors.empty())
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| 192 | return;
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| 193 | std::list<glut_interactor *>::iterator it =
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| 194 | std::find(interactors.begin(), interactors.end(), gi);
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| 195 | if(it != interactors.end())
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| 196 | interactors.erase(it);
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| 197 | }
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| 198 |
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| 199 | inline void glut_add_interactor(glut_interactor *gi, bool append=true)
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| 200 | {
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| 201 | glut_remove_interactor(gi);
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| 202 | if(append)
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| 203 | interactors.push_back(gi);
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| 204 | else
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| 205 | interactors.push_front(gi);
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| 206 | }
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| 207 |
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| 208 | inline void glut_timer(int msec, int value)
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| 209 | {
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| 210 | glutTimerFunc(msec, glut_timer_function, value);
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| 211 | }
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| 212 |
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| 213 | inline void glut_idle(bool do_idle)
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| 214 | {
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| 215 | glutIdleFunc(do_idle ? glut_idle_function : 0);
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| 216 | }
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| 217 |
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| 218 | class glut_callbacks : public glut_interactor
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| 219 | {
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| 220 | public:
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| 221 | glut_callbacks() :
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| 222 | display_function(0),
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| 223 | idle_function(0),
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| 224 | keyboard_function(0),
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| 225 | menu_status_function(0),
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| 226 | motion_function(0),
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| 227 | mouse_function(0),
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| 228 | passive_motion_function(0),
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| 229 | reshape_function(0),
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| 230 | special_function(0),
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| 231 | timer_function(0),
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| 232 | visibility_function()
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| 233 | {}
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| 234 |
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| 235 | virtual void display()
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| 236 | { if(display_function) display_function(); }
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| 237 |
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| 238 | virtual void idle()
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| 239 | { if(idle_function) idle_function(); }
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| 240 |
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| 241 | virtual void keyboard(unsigned char k, int x, int y)
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| 242 | { if(keyboard_function) keyboard_function(k, x, y); }
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| 243 |
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| 244 | virtual void menu_status(int status, int x, int y)
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| 245 | { if(menu_status_function) menu_status_function(status, x, y); }
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| 246 |
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| 247 | virtual void motion(int x, int y)
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| 248 | { if(motion_function) motion_function(x,y); }
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| 249 |
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| 250 | virtual void mouse(int button, int state, int x, int y)
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| 251 | { if(mouse_function) mouse_function(button, state, x, y); }
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| 252 |
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| 253 | virtual void passive_motion(int x, int y)
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| 254 | { if(passive_motion_function) passive_motion_function(x, y); }
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| 255 |
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| 256 | virtual void reshape(int w, int h)
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| 257 | { if(reshape_function) reshape_function(w, h); }
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| 258 |
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| 259 | virtual void special(int key, int x, int y)
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| 260 | { if(special_function) special_function(key, x, y); }
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| 261 |
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| 262 | virtual void timer(int value)
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| 263 | { if(timer_function) timer_function(value); }
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| 264 |
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| 265 | virtual void visibility(int v)
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| 266 | { if(visibility_function) visibility_function(v); }
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| 267 |
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| 268 | void (* display_function) ();
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| 269 | void (* idle_function) ();
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| 270 | void (* keyboard_function) (unsigned char, int, int);
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| 271 | void (* menu_status_function) (int, int, int);
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| 272 | void (* motion_function) (int, int);
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| 273 | void (* mouse_function) (int, int, int, int);
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| 274 | void (* passive_motion_function) (int, int);
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| 275 | void (* reshape_function) (int, int);
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| 276 | void (* special_function) (int, int, int);
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| 277 | void (* timer_function) (int);
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| 278 | void (* visibility_function) (int);
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| 279 |
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| 280 | };
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| 281 |
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| 282 |
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| 283 |
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| 284 | class glut_perspective_reshaper : public glut_interactor
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| 285 | {
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| 286 | public:
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| 287 | glut_perspective_reshaper(float infovy = 60.f, float inzNear = .1f, float inzFar = 10.f)
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| 288 | : fovy(infovy), zNear(inzNear), zFar(inzFar), aspect_factor(1) {}
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| 289 |
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| 290 | void reshape(int w, int h)
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| 291 | {
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| 292 | width = w; height = h;
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| 293 |
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| 294 | if(enabled) apply();
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| 295 | }
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| 296 |
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| 297 | void apply()
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| 298 | {
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| 299 | glViewport(0,0,width,height);
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| 300 | glMatrixMode(GL_PROJECTION);
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| 301 | glLoadIdentity();
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| 302 | apply_projection();
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| 303 | glMatrixMode(GL_MODELVIEW);
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| 304 | }
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| 305 |
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| 306 | matrix4f get_projection()
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| 307 | {
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| 308 | aspect = aspect_factor * float(width)/float(height);
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| 309 | if ( aspect < 1 )
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| 310 | {
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| 311 | // fovy is a misnomer.. we really mean the fov applies to the
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| 312 | // smaller dimension
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| 313 | float fovx = fovy;
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| 314 | float real_fov = to_degrees(2 * atan(tan(to_radians(fovx/2))/aspect));
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| 315 | return perspective(real_fov, aspect, zNear, zFar);
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| 316 | }
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| 317 | else
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| 318 | return perspective(fovy, aspect, zNear, zFar);
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| 319 | }
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| 320 |
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| 321 | void apply_projection()
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| 322 | {
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| 323 | glMultMatrixf(get_projection().m);
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| 324 | }
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| 325 |
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| 326 | matrix4f get_projection_inverse()
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| 327 | {
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| 328 | aspect = aspect_factor * float(width)/float(height);
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| 329 | if ( aspect < 1 )
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| 330 | {
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| 331 | // fovy is a misnomer.. we really mean the fov applies to the
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| 332 | // smaller dimension
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| 333 | float fovx = fovy;
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| 334 | float real_fov = to_degrees(2 * atan(tan(to_radians(fovx/2))/aspect));
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| 335 | return perspective_inverse(real_fov, aspect, zNear, zFar);
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| 336 | }
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| 337 | else
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| 338 | return perspective_inverse(fovy, aspect, zNear, zFar);
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| 339 | }
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| 340 |
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| 341 | void apply_projection_inverse()
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| 342 | {
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| 343 | glMultMatrixf(get_projection_inverse().m);
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| 344 | }
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| 345 |
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| 346 | int width, height;
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| 347 | float fovy, aspect, zNear, zFar;
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| 348 | float aspect_factor;
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| 349 | };
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| 350 |
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| 351 |
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| 352 | // activates/deactivates on particular mouse button/modifier combinations
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| 353 | // and calculates deltas while active
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| 354 | class glut_simple_interactor : public glut_interactor
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| 355 | {
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| 356 | public:
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| 357 | glut_simple_interactor()
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| 358 | {
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| 359 | num_modes = 0;
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| 360 | active = false;
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| 361 | width = height = 0;
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| 362 | x0 = y0 = x = y = dx = dy = 0;
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| 363 | }
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| 364 |
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| 365 | virtual void mouse(int button, int state, int X, int Y)
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| 366 | {
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| 367 | for(int i=0; i < num_modes; i++)
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| 368 | {
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| 369 | if(enabled && button == cond[i].activate_on && state == GLUT_DOWN &&
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| 370 | (! cond[i].use_modifiers || (cond[i].modifiers == glutGetModifiers())) )
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| 371 | {
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| 372 | mode = i;
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| 373 | active = true;
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| 374 | x = x0 = X;
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| 375 | y = y0 = height - Y;
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| 376 | dx = dy = 0;
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| 377 | break;
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| 378 | }
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| 379 | else if (enabled && button == cond[i].activate_on && state == GLUT_UP)
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| 380 | {
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| 381 | if(dx == 0 && dy == 0)
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| 382 | update();
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| 383 | active = false;
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| 384 | dx = dy = 0;
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| 385 | mode = -1;
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| 386 | break;
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| 387 | }
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| 388 | }
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| 389 | }
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| 390 |
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| 391 | virtual void motion(int X, int Y)
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| 392 | {
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| 393 | if(enabled && active)
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| 394 | {
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| 395 | dx = X - x; dy = (height - Y) - y;
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| 396 | x = X; y = height - Y;
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| 397 | update();
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| 398 | }
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| 399 | }
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| 400 |
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| 401 | void reshape(int w, int h)
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| 402 | {
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| 403 | width = w; height = h;
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| 404 | }
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| 405 |
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| 406 | virtual void apply_transform() = 0;
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| 407 | virtual void apply_inverse_transform() = 0;
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| 408 | virtual matrix4f get_transform() = 0;
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| 409 | virtual matrix4f get_inverse_transform() = 0;
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| 410 |
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| 411 | virtual void update() {}
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| 412 |
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| 413 | struct activate_condition
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| 414 | {
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| 415 | activate_condition()
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| 416 | {
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| 417 | activate_on = GLUT_LEFT_BUTTON;
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| 418 | use_modifiers = true;
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| 419 | modifiers = 0;
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| 420 | }
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| 421 | int activate_on;
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| 422 | bool use_modifiers;
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| 423 | int modifiers;
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| 424 | };
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| 425 |
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| 426 | activate_condition cond[2];
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| 427 | bool active;
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| 428 | int x0, y0;
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| 429 | int x, y;
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| 430 | int dx, dy;
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| 431 | int width, height;
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| 432 | int num_modes;
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| 433 | int mode;
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| 434 | };
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| 435 |
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| 436 |
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| 437 | class glut_translator : public translator, public glut_simple_interactor
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| 438 | {
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| 439 | public:
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| 440 |
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| 441 | void update()
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| 442 | {
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| 443 | if(mode == 0)
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| 444 | pan(dx, dy);
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| 445 | else if(mode == 1)
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| 446 | dolly(-dy);
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| 447 | glutPostRedisplay();
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| 448 | }
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| 449 |
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| 450 | void apply_transform()
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| 451 | {
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| 452 | //cerr << "Applying transform: " << (x - x0) << ", " << (y - y0) << endl;
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| 453 | glTranslatef(t[0], t[1], t[2]);
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| 454 | }
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| 455 |
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| 456 | void apply_inverse_transform()
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| 457 | {
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| 458 | //cerr << "Applying transform: " << (x - x0) << ", " << (y - y0) << endl;
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| 459 | glTranslatef(-t[0], -t[1], -t[2]);
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| 460 | }
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| 461 |
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| 462 | matrix4f get_transform()
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| 463 | {
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| 464 | return translator::get_transform();
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| 465 | }
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| 466 |
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| 467 | matrix4f get_inverse_transform()
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| 468 | {
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| 469 | return translator::get_inverse_transform();
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| 470 | }
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| 471 |
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| 472 | };
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| 473 |
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| 474 |
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| 475 | class glut_trackball : public glut_simple_interactor, public trackball
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| 476 | {
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| 477 | public:
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| 478 |
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| 479 | void update()
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| 480 | {
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| 481 | radius = width < height ? width : height;
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| 482 | radius /= 2.f;
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| 483 | offset = vec3f(width/2.f, height/2.f, 0);
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| 484 | rotate(x-dx, y-dy, x, y);
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| 485 | glutPostRedisplay();
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| 486 | }
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| 487 |
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| 488 | void apply_transform()
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| 489 | {
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| 490 | glTranslatef(centroid[0], centroid[1], centroid[2]);
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| 491 | glh_rotate(r);
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| 492 | glTranslatef(-centroid[0], -centroid[1], -centroid[2]);
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| 493 | }
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| 494 |
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| 495 | void apply_inverse_transform()
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| 496 | {
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| 497 | glTranslatef(centroid[0], centroid[1], centroid[2]);
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| 498 | glh_rotate(r.inverse());
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| 499 | glTranslatef(-centroid[0], -centroid[1], -centroid[2]);
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| 500 | }
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| 501 |
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| 502 | matrix4f get_transform()
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| 503 | {
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| 504 | return trackball::get_transform();
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| 505 | }
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| 506 |
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| 507 | matrix4f get_inverse_transform()
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| 508 | {
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| 509 | return trackball::get_inverse_transform();
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| 510 | }
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| 511 |
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| 512 | };
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| 513 |
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| 514 | inline void glut_exit_on_escape(unsigned char k, int x = 0, int y = 0)
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| 515 | { if(k==27) exit(0); }
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| 516 |
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| 517 | struct glut_simple_mouse_interactor : public glut_interactor
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| 518 | {
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| 519 |
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| 520 | public:
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| 521 | glut_simple_mouse_interactor(int num_buttons_to_use=3)
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| 522 | {
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| 523 | configure_buttons(num_buttons_to_use);
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| 524 | camera_mode = false;
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| 525 | }
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| 526 |
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| 527 | void enable()
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| 528 | {
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| 529 | trackball.enable();
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| 530 | translator.enable();
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| 531 | }
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| 532 |
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| 533 | void disable()
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| 534 | {
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| 535 | trackball.disable();
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| 536 | translator.disable();
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| 537 | }
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| 538 |
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| 539 | void set_camera_mode(bool cam)
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| 540 | {
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| 541 | camera_mode = cam;
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| 542 | if(camera_mode)
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| 543 | {
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| 544 | trackball.invert_increment = true;
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| 545 | translator.invert_increment = true;
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| 546 | translator.parent_rotation = & trackball.r;
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| 547 | }
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| 548 | else
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| 549 | {
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| 550 | trackball.invert_increment = false;
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| 551 | translator.invert_increment = false;
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| 552 | if(translator.parent_rotation == &trackball.r) translator.parent_rotation = 0;
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| 553 | }
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| 554 | }
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| 555 | void configure_buttons(int num_buttons_to_use = 3)
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| 556 | {
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| 557 | switch(num_buttons_to_use)
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| 558 | {
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| 559 | case 1:
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| 560 |
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| 561 | trackball.num_modes = 1;
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| 562 | trackball.cond[0].activate_on = GLUT_LEFT_BUTTON;
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| 563 | trackball.cond[0].modifiers = 0;
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| 564 | trackball.cond[0].use_modifiers = true;
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| 565 |
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| 566 | translator.num_modes = 2;
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| 567 | translator.cond[0].activate_on = GLUT_LEFT_BUTTON;
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| 568 | translator.cond[0].modifiers = GLUT_ACTIVE_SHIFT;
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| 569 | translator.cond[0].use_modifiers = true;
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| 570 | translator.cond[1].activate_on = GLUT_LEFT_BUTTON;
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| 571 | translator.cond[1].modifiers = GLUT_ACTIVE_CTRL;
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| 572 | translator.cond[1].use_modifiers = true;
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| 573 | break;
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| 574 |
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| 575 | case 2:
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| 576 |
|
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| 577 | trackball.num_modes = 1;
|
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| 578 | trackball.cond[0].activate_on = GLUT_LEFT_BUTTON;
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| 579 | trackball.cond[0].modifiers = 0;
|
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| 580 | trackball.cond[0].use_modifiers = true;
|
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| 581 |
|
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| 582 | translator.num_modes = 2;
|
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| 583 | translator.cond[0].activate_on = GLUT_MIDDLE_BUTTON;
|
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| 584 | translator.cond[0].modifiers = 0;
|
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| 585 | translator.cond[0].use_modifiers = true;
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| 586 | translator.cond[1].activate_on = GLUT_LEFT_BUTTON;
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| 587 | translator.cond[1].modifiers = GLUT_ACTIVE_CTRL;
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| 588 | translator.cond[1].use_modifiers = true;
|
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| 589 |
|
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| 590 | break;
|
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| 591 |
|
---|
| 592 | case 3:
|
---|
| 593 | default:
|
---|
| 594 |
|
---|
| 595 | trackball.num_modes = 1;
|
---|
| 596 | trackball.cond[0].activate_on = GLUT_LEFT_BUTTON;
|
---|
| 597 | trackball.cond[0].modifiers = 0;
|
---|
| 598 | trackball.cond[0].use_modifiers = true;
|
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| 599 |
|
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| 600 | translator.num_modes = 2;
|
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| 601 | translator.cond[0].activate_on = GLUT_MIDDLE_BUTTON;
|
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| 602 | translator.cond[0].modifiers = 0;
|
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| 603 | translator.cond[0].use_modifiers = true;
|
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| 604 | translator.cond[1].activate_on = GLUT_RIGHT_BUTTON;
|
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| 605 | translator.cond[1].modifiers = 0;
|
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| 606 | translator.cond[1].use_modifiers = true;
|
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| 607 |
|
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| 608 | break;
|
---|
| 609 | }
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 | virtual void motion(int x, int y)
|
---|
| 613 | {
|
---|
| 614 | trackball.motion(x,y);
|
---|
| 615 | translator.motion(x,y);
|
---|
| 616 | }
|
---|
| 617 |
|
---|
| 618 | virtual void mouse(int button, int state, int x, int y)
|
---|
| 619 | {
|
---|
| 620 | trackball.mouse(button, state, x, y);
|
---|
| 621 | translator.mouse(button, state, x, y);
|
---|
| 622 | }
|
---|
| 623 |
|
---|
| 624 | virtual void reshape(int x, int y)
|
---|
| 625 | {
|
---|
| 626 | trackball.reshape(x,y);
|
---|
| 627 | translator.reshape(x,y);
|
---|
| 628 | }
|
---|
| 629 |
|
---|
| 630 | void apply_transform()
|
---|
| 631 | {
|
---|
| 632 | translator.apply_transform();
|
---|
| 633 | trackball.apply_transform();
|
---|
| 634 | }
|
---|
| 635 |
|
---|
| 636 | void apply_inverse_transform()
|
---|
| 637 | {
|
---|
| 638 | trackball.apply_inverse_transform();
|
---|
| 639 | translator.apply_inverse_transform();
|
---|
| 640 | }
|
---|
| 641 |
|
---|
| 642 | matrix4f get_transform()
|
---|
| 643 | {
|
---|
| 644 | return ( translator.get_transform() *
|
---|
| 645 | trackball.get_transform() );
|
---|
| 646 | }
|
---|
| 647 |
|
---|
| 648 | matrix4f get_inverse_transform()
|
---|
| 649 | {
|
---|
| 650 | return ( trackball.get_inverse_transform() *
|
---|
| 651 | translator.get_inverse_transform() );
|
---|
| 652 | }
|
---|
| 653 |
|
---|
| 654 | void set_parent_rotation(rotationf *rp)
|
---|
| 655 | {
|
---|
| 656 | trackball.parent_rotation = rp;
|
---|
| 657 | translator.parent_rotation = rp;
|
---|
| 658 | }
|
---|
| 659 |
|
---|
| 660 | bool camera_mode;
|
---|
| 661 | glut_trackball trackball;
|
---|
| 662 | glut_translator translator;
|
---|
| 663 | };
|
---|
| 664 |
|
---|
| 665 | }
|
---|
| 666 |
|
---|
| 667 | #endif
|
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