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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <string.h>
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4 #include <assert.h>
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5 #include <GL/glew.h>
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6 #ifdef __APPLE__
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7 #include <GLUT/glut.h>
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8 #else
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9 #include <GL/glut.h>
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10 #endif
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11 #include "vr.h"
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12 #include "camera.h"
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13
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14 static bool init();
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15 static void cleanup();
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16 static void disp();
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17 static void idle();
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18 static void reshape(int x, int y);
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19 static void keyb(unsigned char key, int x, int y);
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20 static void sball_rotate(int rx, int ry, int rz);
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21 static bool parse_args(int argc, char **argv);
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22
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23 static Camera cam;
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24 static int width, height;
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25 static bool use_vr = false;
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26
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27 int main(int argc, char **argv)
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28 {
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29 glutInit(&argc, argv);
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30
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31 if(!parse_args(argc, argv)) {
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32 return 1;
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33 }
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34
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35 glutInitWindowSize(1280, 800);
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36 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
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37 glutCreateWindow("oculus test 01");
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38
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39 glutDisplayFunc(disp);
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40 glutIdleFunc(idle);
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41 glutReshapeFunc(reshape);
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42 glutKeyboardFunc(keyb);
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43 glutSpaceballRotateFunc(sball_rotate);
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44
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45 glewInit();
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46
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47 if(!init()) {
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48 return 1;
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49 }
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50 atexit(cleanup);
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51
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52 glutMainLoop();
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53 return 0;
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54 }
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55
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56 static bool init()
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57 {
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58 glEnable(GL_DEPTH_TEST);
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59 glEnable(GL_LIGHTING);
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60 glEnable(GL_CULL_FACE);
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61
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62 glEnable(GL_LIGHT0);
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63 glEnable(GL_LIGHTING);
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64
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65 if(vr_init(VR_INIT_OCULUS) == -1) {
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66 return false;
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67 }
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68 return true;
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69 }
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70
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71 static void cleanup()
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72 {
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73 vr_shutdown();
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74 }
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75
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76 static void disp()
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77 {
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78 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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79
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80 glMatrixMode(GL_PROJECTION);
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81 glLoadIdentity();
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82 gluPerspective(45.0, (float)width / (float)height, 0.5, 500.0);
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83
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84 glMatrixMode(GL_MODELVIEW);
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85 glLoadIdentity();
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86 glTranslatef(0, 0, -8);
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87
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88 float lpos[] = {0, 60, 0, 1};
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89 glLightfv(GL_LIGHT0, GL_POSITION, lpos);
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90
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91 glFrontFace(GL_CW);
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92 glutSolidTeapot(1.0);
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93 glFrontFace(GL_CCW);
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94
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95 glutSwapBuffers();
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96 assert(glGetError() == GL_NO_ERROR);
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97 }
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98
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99 static void idle()
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100 {
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101 glutPostRedisplay();
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102 }
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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 width = x;
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108 height = y;
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109 }
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110
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111 static void keyb(unsigned char key, int x, int y)
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112 {
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113 switch(key) {
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114 case 27:
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115 exit(0);
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116 }
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117 }
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118
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119 static void sball_rotate(int rx, int ry, int rz)
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120 {
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121 }
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122
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123 static bool parse_args(int argc, char **argv)
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124 {
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125 for(int i=1; i<argc; i++) {
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126 if(argv[i][0] == '-') {
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127 if(strcmp(argv[i], "-vr") == 0) {
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128 use_vr = true;
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129 } else if(strcmp(argv[i], "-novr") == 0) {
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130 use_vr = false;
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131 } else {
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132 fprintf(stderr, "invalid option: %s\n", argv[i]);
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133 return false;
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134 }
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135 } else {
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136 fprintf(stderr, "unexpected argument: %s\n", argv[i]);
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137 return false;
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138 }
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139 }
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140 return true;
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141 }
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