public static float3 Color(Ray r, HitableArray <Sphere> world, int depth, ref Random rng)
{
var rec = new HitRecord();
if (world.Hit(r, 0.001f, float.MaxValue, ref rec))
{
Ray scattered = new Ray();
float3 attenuation = new float3();
if (depth < 50)
{
if (r.Scatter(rec, ref attenuation, ref scattered, ref rng))
{
return(attenuation * Color(scattered, world, depth + 1, ref rng));
}
}
else
{
// this ray has run out of bounces - draw a black pixel
return(new float3());
}
}
// the ray didn't hit anything, so draw the background color for this pixel
return(Utils.BackgroundColor(ref r));
}
public static float3 Color(Ray r, HitableArray <Sphere> world)
{
var rec = new HitRecord();
if (world.Hit(r, 0f, float.MaxValue, ref rec))
{
var rn = rec.normal;
return(0.5f * new float3(rn.x + 1f, rn.y + 1f, rn.z + 1f));
}
return(Utils.BackgroundColor(ref r));
}
public float3 Color(Ray r, HitableArray <Sphere> world)
{
var rec = new HitRecord();
if (recursionCounter < maxHits && world.Hit(r, 0.001f, float.MaxValue, ref rec))
{
recursionCounter++;
var target = rec.p + rec.normal + Utils.RandomInUnitSphere(random);
return(absorbRate * Color(new Ray(rec.p, target - rec.p), world));
}
return(Utils.BackgroundColor(ref r));
}
