public static void RenderTo(this Image <Rgba32> image, IViewportToWindowTransform v2w, float viewDistance,
Matrix4x4 viewing, Vector3 eye,
IEnumerable <Traceable> objects, IEnumerable <Light> lights, Color ambientLight)
{
var sw = new System.Diagnostics.Stopwatch();
sw.Start();
Parallel.For(0, image.Height, (y, state) =>
{
Ray ray;
Vector3 viewingPoint;
Vector3 worldPoint;
Color color;
PointF viewportPoint;
PointF windowPoint = new PointF(0, 0);
for (var x = 0; x < image.Width; x++)
{
viewportPoint = new PointF(x, y);
windowPoint = v2w.Transform(viewportPoint);
viewingPoint = new Vector3(windowPoint.X, windowPoint.Y, viewDistance);
worldPoint = viewing.Image(viewingPoint);
ray = Ray.CreateFromPoints(eye, worldPoint);
color = ray.Trace(objects, lights, eye, ambientLight);
image[x, y] = new Rgba32(color.R, color.G, color.B);
}
});
Console.WriteLine("Elapsed: " + sw.Elapsed);
}
public Ray GetLocalRay(Ray ray)
{
var worldOrigin = ray.Origin;
var worldPoint = ray.PointAt(1);
var localOrigin = Model.Inverse.Image(worldOrigin);
var localPoint = Model.Inverse.Image(worldPoint);
return(Ray.CreateFromPoints(localOrigin, localPoint));
}
