public static Intersection intersect(Ray ray, Model model) {
Intersection result = new Intersection(false);
int matchCount = 0;
for (DrawedObject obj : model.getObjects()) {
if (obj instanceof TriangleObject) {
Intersection intersection = getIntersection(ray, (TriangleObject) obj, model);
final boolean match = intersection.isMatch();
if (match) {
++matchCount;
}
if (match && intersection.getDistance() < result.getDistance()) {
result = intersection;
}
} else if (obj instanceof SphereObject) {
Intersection intersection = getIntersection(ray, (SphereObject) obj, model);
final boolean match = intersection.isMatch();
if (match) {
++matchCount;
}
if (match && intersection.getDistance() < result.getDistance()) {
result = intersection;
}
}
}
result.setIntersectionCount(matchCount);
return result;
}
public static BufferedImage render(Model model) {
Camera cam = getCamera(model);
BufferedImage result =
new BufferedImage(model.getW(), model.getH(), BufferedImage.TYPE_INT_RGB);
IntStream xs = IntStream.range(0, model.getW()).parallel();
Date startTime = new Date();
xs.forEach(
x -> {
IntStream ys = IntStream.range(0, model.getH());
ys.forEach(
y -> {
Ray ray = rayThruPixel(cam, x, y);
Intersection hit = intersect(ray, model);
result.setRGB(x, y, findColor(hit, cam, model));
});
});
Date endTime = new Date();
final float time = endTime.getTime() - startTime.getTime();
System.out.println("Executing time: " + time / 1000);
return result;
}
private static Camera getCamera(Model model) {
Camera result = new Camera();
result.setFrom(model.getFrom());
result.setTo(model.getTo());
result.setUp(model.getUp());
result.setFov(model.getFov());
result.setWidth(model.getW());
result.setHeight(model.getH());
result.init();
return result;
}