oculus1

annotate src/main.cc @ 11:39ec672a5158

find changesets by author, revision, files, or words in the commit message
added simple head model to the VR camera
author John Tsiombikas <nuclear@member.fsf.org>
date Fri, 20 Sep 2013 07:00:18 +0300
parents b2abb08c8f94
children d797639e0234
rev   line source
nuclear@0 1 #include <stdio.h>
nuclear@0 2 #include <stdlib.h>
nuclear@1 3 #include <string.h>
nuclear@0 4 #include <assert.h>
nuclear@8 5 #include "opengl.h"
nuclear@1 6 #include "vr.h"
nuclear@0 7 #include "camera.h"
nuclear@0 8
nuclear@0 9 static bool init();
nuclear@0 10 static void cleanup();
nuclear@0 11 static void disp();
nuclear@9 12 static void draw_scene();
nuclear@0 13 static void idle();
nuclear@0 14 static void reshape(int x, int y);
nuclear@0 15 static void keyb(unsigned char key, int x, int y);
nuclear@8 16 static void keyup(unsigned char key, int x, int y);
nuclear@8 17 static void mouse(int bn, int st, int x, int y);
nuclear@8 18 static void motion(int x, int y);
nuclear@8 19 static void passive(int x, int y);
nuclear@0 20 static void sball_rotate(int rx, int ry, int rz);
nuclear@1 21 static bool parse_args(int argc, char **argv);
nuclear@0 22
nuclear@10 23 static VRFpsCamera cam;
nuclear@0 24 static int width, height;
nuclear@1 25 static bool use_vr = false;
nuclear@8 26 static bool mouselook = false;
nuclear@8 27
nuclear@8 28 static bool keystate[256];
nuclear@8 29
nuclear@0 30
nuclear@0 31 int main(int argc, char **argv)
nuclear@0 32 {
nuclear@3 33 glutInitWindowSize(1280, 800);
nuclear@0 34 glutInit(&argc, argv);
nuclear@1 35
nuclear@1 36 if(!parse_args(argc, argv)) {
nuclear@1 37 return 1;
nuclear@1 38 }
nuclear@1 39
nuclear@9 40 glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_MULTISAMPLE);
nuclear@0 41 glutCreateWindow("oculus test 01");
nuclear@0 42
nuclear@0 43 glutDisplayFunc(disp);
nuclear@0 44 glutIdleFunc(idle);
nuclear@0 45 glutReshapeFunc(reshape);
nuclear@0 46 glutKeyboardFunc(keyb);
nuclear@8 47 glutKeyboardUpFunc(keyup);
nuclear@8 48 glutMouseFunc(mouse);
nuclear@8 49 glutMotionFunc(motion);
nuclear@0 50 glutSpaceballRotateFunc(sball_rotate);
nuclear@0 51
nuclear@0 52 if(!init()) {
nuclear@0 53 return 1;
nuclear@0 54 }
nuclear@0 55 atexit(cleanup);
nuclear@0 56
nuclear@0 57 glutMainLoop();
nuclear@0 58 return 0;
nuclear@0 59 }
nuclear@0 60
nuclear@0 61 static bool init()
nuclear@0 62 {
nuclear@9 63 glewInit(); // this must be first
nuclear@9 64
nuclear@9 65 if(GLEW_ARB_multisample) {
nuclear@9 66 glEnable(GL_MULTISAMPLE);
nuclear@9 67 }
nuclear@8 68
nuclear@0 69 glEnable(GL_DEPTH_TEST);
nuclear@0 70 glEnable(GL_LIGHTING);
nuclear@0 71 glEnable(GL_CULL_FACE);
nuclear@0 72
nuclear@0 73 glEnable(GL_LIGHT0);
nuclear@0 74 glEnable(GL_LIGHTING);
nuclear@0 75
nuclear@11 76 // y = height of neck
nuclear@11 77 cam.input_move(0, 1.65, 0);
nuclear@9 78
nuclear@1 79 if(vr_init(VR_INIT_OCULUS) == -1) {
nuclear@5 80 return false;
nuclear@0 81 }
nuclear@0 82 return true;
nuclear@0 83 }
nuclear@0 84
nuclear@0 85 static void cleanup()
nuclear@0 86 {
nuclear@1 87 vr_shutdown();
nuclear@0 88 }
nuclear@0 89
nuclear@0 90 static void disp()
nuclear@0 91 {
nuclear@4 92 unsigned int msec = glutGet(GLUT_ELAPSED_TIME);
nuclear@4 93
nuclear@0 94 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
nuclear@0 95
nuclear@0 96 glMatrixMode(GL_PROJECTION);
nuclear@0 97 glLoadIdentity();
nuclear@0 98 gluPerspective(45.0, (float)width / (float)height, 0.5, 500.0);
nuclear@0 99
nuclear@0 100 glMatrixMode(GL_MODELVIEW);
nuclear@9 101 glLoadIdentity();
nuclear@0 102
nuclear@10 103 cam.track_vr();
nuclear@9 104 cam.use_inverse();
nuclear@9 105
nuclear@9 106 draw_scene();
nuclear@9 107
nuclear@9 108 glutSwapBuffers();
nuclear@9 109 assert(glGetError() == GL_NO_ERROR);
nuclear@9 110 }
nuclear@9 111
nuclear@9 112 static void draw_teapot()
nuclear@9 113 {
nuclear@9 114 static int tealist;
nuclear@9 115
nuclear@9 116 if(!tealist) {
nuclear@9 117 tealist = glGenLists(1);
nuclear@9 118 glNewList(tealist, GL_COMPILE);
nuclear@9 119 glutSolidTeapot(1.0);
nuclear@9 120 glEndList();
nuclear@9 121 }
nuclear@9 122
nuclear@9 123 glFrontFace(GL_CW);
nuclear@9 124 glCallList(tealist);
nuclear@9 125 glFrontFace(GL_CCW);
nuclear@9 126 }
nuclear@9 127
nuclear@9 128 void draw_grid(float size, float spacing)
nuclear@9 129 {
nuclear@9 130 int num_lines = size / spacing;
nuclear@9 131 float dist = size / 2.0;
nuclear@9 132
nuclear@9 133 glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT);
nuclear@9 134 glDisable(GL_LIGHTING);
nuclear@9 135
nuclear@9 136 glLineWidth(1.0);
nuclear@9 137
nuclear@9 138 glBegin(GL_LINES);
nuclear@9 139 glColor3f(0.4, 0.4, 0.4);
nuclear@9 140
nuclear@9 141 float x = -dist;
nuclear@9 142 for(int i=0; i<=num_lines; i++) {
nuclear@9 143 if(i != num_lines / 2) {
nuclear@9 144 glVertex3f(-dist, 0, x);
nuclear@9 145 glVertex3f(dist, 0, x);
nuclear@9 146 glVertex3f(x, 0, -dist);
nuclear@9 147 glVertex3f(x, 0, dist);
nuclear@9 148 }
nuclear@9 149 x += spacing;
nuclear@9 150 }
nuclear@9 151 glEnd();
nuclear@9 152
nuclear@9 153 glLineWidth(2.0);
nuclear@9 154
nuclear@9 155 glBegin(GL_LINES);
nuclear@9 156 glColor3f(1.0, 0, 0);
nuclear@9 157 glVertex3f(-dist, 0, 0);
nuclear@9 158 glVertex3f(dist, 0, 0);
nuclear@9 159 glColor3f(0, 1.0, 0);
nuclear@9 160 glVertex3f(0, 0, -dist);
nuclear@9 161 glVertex3f(0, 0, dist);
nuclear@9 162 glEnd();
nuclear@9 163
nuclear@9 164 glPopAttrib();
nuclear@9 165 }
nuclear@9 166
nuclear@9 167
nuclear@9 168 static void draw_scene()
nuclear@9 169 {
nuclear@0 170 float lpos[] = {0, 60, 0, 1};
nuclear@0 171 glLightfv(GL_LIGHT0, GL_POSITION, lpos);
nuclear@0 172
nuclear@9 173 static Vector2 teapos[] = {
nuclear@9 174 Vector2(-8, 8), Vector2(8, 8), Vector2(8, -8), Vector2(-8, -8)
nuclear@9 175 };
nuclear@8 176
nuclear@9 177 for(int i=0; i<4; i++) {
nuclear@9 178 glPushMatrix();
nuclear@9 179 glTranslatef(teapos[i].x, 0, teapos[i].y);
nuclear@9 180 draw_teapot();
nuclear@9 181 glPopMatrix();
nuclear@9 182 }
nuclear@0 183
nuclear@9 184 draw_grid(100.0, 2.5);
nuclear@0 185 }
nuclear@0 186
nuclear@0 187 static void idle()
nuclear@0 188 {
nuclear@0 189 glutPostRedisplay();
nuclear@0 190 }
nuclear@0 191
nuclear@0 192
nuclear@0 193 static void reshape(int x, int y)
nuclear@0 194 {
nuclear@0 195 width = x;
nuclear@0 196 height = y;
nuclear@0 197 }
nuclear@0 198
nuclear@0 199 static void keyb(unsigned char key, int x, int y)
nuclear@0 200 {
nuclear@0 201 switch(key) {
nuclear@0 202 case 27:
nuclear@0 203 exit(0);
nuclear@8 204
nuclear@8 205 case 'm':
nuclear@8 206 mouselook = !mouselook;
nuclear@8 207 if(mouselook) {
nuclear@8 208 glutPassiveMotionFunc(passive);
nuclear@8 209 glutSetCursor(GLUT_CURSOR_NONE);
nuclear@8 210 glutWarpPointer(width / 2, height / 2);
nuclear@8 211 } else {
nuclear@8 212 glutPassiveMotionFunc(0);
nuclear@8 213 glutSetCursor(GLUT_CURSOR_INHERIT);
nuclear@8 214 }
nuclear@8 215 break;
nuclear@0 216 }
nuclear@8 217
nuclear@8 218 keystate[key] = true;
nuclear@8 219 glutPostRedisplay();
nuclear@8 220 }
nuclear@8 221
nuclear@8 222 static void keyup(unsigned char key, int x, int y)
nuclear@8 223 {
nuclear@8 224 keystate[key] = false;
nuclear@8 225 glutPostRedisplay();
nuclear@8 226 }
nuclear@8 227
nuclear@8 228 static bool bnstate[32];
nuclear@8 229 static int prev_x, prev_y;
nuclear@8 230
nuclear@8 231 static void mouse(int bn, int st, int x, int y)
nuclear@8 232 {
nuclear@8 233 prev_x = x;
nuclear@8 234 prev_y = y;
nuclear@8 235 bnstate[bn - GLUT_LEFT_BUTTON] = st == GLUT_DOWN;
nuclear@8 236 }
nuclear@8 237
nuclear@8 238 static void motion(int x, int y)
nuclear@8 239 {
nuclear@8 240 if(mouselook) {
nuclear@8 241 // just call passive, it does what we need
nuclear@8 242 passive(x, y);
nuclear@8 243 }
nuclear@8 244 }
nuclear@8 245
nuclear@8 246 static void passive(int x, int y)
nuclear@8 247 {
nuclear@8 248 // no need to test mouselook; this callback is only set when mouselook is enabled
nuclear@8 249 int center_x = width / 2;
nuclear@8 250 int center_y = height / 2;
nuclear@8 251
nuclear@8 252 int dx = x - center_x;
nuclear@8 253 int dy = y - center_y;
nuclear@8 254
nuclear@8 255 if(!dx && !dy) {
nuclear@8 256 return;
nuclear@8 257 }
nuclear@8 258
nuclear@9 259 float dtheta_deg = dy * 0.1;
nuclear@9 260 float dphi_deg = dx * 0.1;
nuclear@9 261
nuclear@9 262 cam.input_rotate(DEG_TO_RAD(dtheta_deg), DEG_TO_RAD(dphi_deg), 0);
nuclear@9 263
nuclear@8 264 glutPostRedisplay();
nuclear@8 265 glutWarpPointer(center_x, center_y);
nuclear@0 266 }
nuclear@0 267
nuclear@0 268 static void sball_rotate(int rx, int ry, int rz)
nuclear@0 269 {
nuclear@0 270 }
nuclear@1 271
nuclear@1 272 static bool parse_args(int argc, char **argv)
nuclear@1 273 {
nuclear@1 274 for(int i=1; i<argc; i++) {
nuclear@1 275 if(argv[i][0] == '-') {
nuclear@1 276 if(strcmp(argv[i], "-vr") == 0) {
nuclear@1 277 use_vr = true;
nuclear@1 278 } else if(strcmp(argv[i], "-novr") == 0) {
nuclear@1 279 use_vr = false;
nuclear@1 280 } else {
nuclear@1 281 fprintf(stderr, "invalid option: %s\n", argv[i]);
nuclear@1 282 return false;
nuclear@1 283 }
nuclear@1 284 } else {
nuclear@1 285 fprintf(stderr, "unexpected argument: %s\n", argv[i]);
nuclear@1 286 return false;
nuclear@1 287 }
nuclear@1 288 }
nuclear@1 289 return true;
nuclear@1 290 }