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1 /*
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2 glviewvol is an OpenGL 3D volume data viewer
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3 Copyright (C) 2014 John Tsiombikas <nuclear@member.fsf.org>
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation, either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18 // GLUT frontend
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19 #ifdef USE_GLUT
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20
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21 #include <stdlib.h>
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22 #include "opengl.h"
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23
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24 #ifdef __APPLE__
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25 #include <GLUT/glut.h>
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26 #else
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27 #include <GL/glut.h>
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28 #endif
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29
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30 #include "viewer.h"
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31 #include "opt.h"
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32
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33 static void display();
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34 static void reshape(int x, int y);
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35 static void key_down(unsigned char key, int x, int y);
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36 static void key_up(unsigned char key, int x, int y);
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37 static void mouse(int bn, int state, int x, int y);
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38 static void motion(int x, int y);
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39
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40 static int win_width, win_height;
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41 static unsigned int mod;
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42
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43 int main(int argc, char **argv)
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44 {
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45 glutInit(&argc, argv);
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46
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47 if(parse_args(argc, argv) == -1) {
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48 return 1;
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49 }
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50
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51 glutInitWindowSize(opt.xsz, opt.ysz);
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52 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
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53 glutCreateWindow("dicom viewer");
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54
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55 glutDisplayFunc(display);
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56 glutReshapeFunc(reshape);
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57 glutKeyboardFunc(key_down);
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58 glutKeyboardUpFunc(key_up);
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59 glutMouseFunc(mouse);
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60 glutMotionFunc(motion);
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61 glutPassiveMotionFunc(motion);
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62
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63 glewInit();
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64
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65 if(init() == -1) {
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66 return 1;
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67 }
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68
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69 glutMainLoop();
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70 return 0;
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71 }
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72
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73 void swap_buffers()
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74 {
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75 glutSwapBuffers();
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76 }
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77
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78 void redisplay()
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79 {
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80 glutPostRedisplay();
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81 }
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82
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83 void quit()
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84 {
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85 cleanup();
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86 exit(0);
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87 }
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88
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89 void get_window_size(int *xsz, int *ysz)
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90 {
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91 *xsz = win_width;
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92 *ysz = win_height;
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93 }
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94
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95 unsigned int get_modifiers()
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96 {
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97 return mod;
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98 }
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99
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100 static void display()
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101 {
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102 ev_display();
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103 }
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104
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105 static void reshape(int x, int y)
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106 {
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107 win_width = x;
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108 win_height = y;
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109 ev_reshape(x, y);
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110 }
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111
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112 static void key_down(unsigned char key, int x, int y)
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113 {
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114 mod = glutGetModifiers();
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115
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116 switch(key) {
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117 case 'i':
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118 {
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119 static bool fullrate;
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120 fullrate = !fullrate;
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121 glutIdleFunc(fullrate ? glutPostRedisplay : 0);
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122 }
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123 break;
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124 }
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125
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126 ev_keyboard(key, 1, x, y);
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127 }
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128
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129 static void key_up(unsigned char key, int x, int y)
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130 {
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131 mod = glutGetModifiers();
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132 ev_keyboard(key, 0, x, y);
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133 }
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134
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135 static void mouse(int bn, int state, int x, int y)
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136 {
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137 mod = glutGetModifiers();
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138 ev_mouse_button(bn - GLUT_LEFT_BUTTON, state == GLUT_DOWN ? 1 : 0, x, y);
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139 }
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140
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141 static void motion(int x, int y)
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142 {
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143 ev_mouse_motion(x, y);
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144 }
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145
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146 #endif // USE_GLUT
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