void control_cb(int control) {
switch (control) {
case DEPTH_TEXT_ID:
glDeleteLists(list,1);
depth = depth_text->get_int_val();
printf("DEPTH = %d. Computing the scene... ",depth);
list = glGenLists(1);
glNewList(list, GL_COMPILE_AND_EXECUTE);
drawScene();
flushCanvas();
glEndList();
printf("Done\n");
glFlush();
break;
case EXIT_ID: exit(0);
break;
default: break;
}
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT);
drawScene(::nColorFilter); // draws the picture in the canvas
flushCanvas(); // draw the canvas to the OpenGL window
glFlush();
}
void init(int w, int h) {
/* OpenGL setup */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
glClearColor(0.0, 0.0, 0.0, 0.0);
/* low-level graphics setup */
initCanvas(w,h);
/* raytracer setup */
initCamera(w,h);
initScene();
initLight();
printf("DEPTH = %d. Computing the scene... ",depth);
list = glGenLists(1);
glNewList(list, GL_COMPILE);
drawScene();
flushCanvas();
glEndList();
printf("Done\n");
}
