int main(int argc, const char* argv[])
{
rayInit(argv[0], "dlc:cube/scenes/scene.map");
rayOpenWindow("Cube World", 1376, 768);
while (!rayIsQuitRequest())
{
rayUpdate();
}
rayTerminate();
return 0;
}
int main(int argc, const char* argv[])
{
rayInit(argv[0], "dlc:GI/scene/scene.map");
if (rayOpenWindow("Global illumination", 1376, 768))
{
while (!rayIsQuitRequest())
rayUpdate();
}
rayTerminate();
return 0;
}
/* take the definition of a camera and a point within the film plane of the camera and generate a RAY
x and y both have a range of -0.5 to +0.5 */
Ray *camGenerateRay(Camera *camera, double x, double y, Ray *ray){
Vec direction;
Vec cameraX, cameraY;
/* work out direction camera is pointing in */
vecSub(&(camera->lookAt), &(camera->at), &direction);
vecNormalise(&direction, &direction);
/* using that and DOWN, work out the camera axes and normalise */
vecProduct(&direction, &(camera->down), &cameraX);
vecProduct(&direction, &cameraX, &cameraY);
vecNormalise(&cameraX, &cameraX);
vecNormalise(&cameraY, &cameraY);
/* finally combine film offset and camera axes to work out film position */
vecScale(x * camera->width, &cameraX, &cameraX);
vecScale(y * camera->height, &cameraY, &cameraY);
vecScale(camera->depth, &direction, &direction);
vecAdd(&cameraX, &direction, &direction);
vecAdd(&cameraY, &direction, &direction);
rayInit(&(camera->at), &direction, ray);
return ray;
}
