public bool Hit(Ray r, float tMin, float tMax, ref HitRecord rec)
{
HitRecord tempRecord = new HitRecord();
bool hitAnything = false;
float closestSoFar = tMax;
for (var i = 0; i < Objects.Length; i++)
{
var obj = Objects[i];
if (obj.Hit(r, tMin, closestSoFar, ref tempRecord))
{
hitAnything = true;
closestSoFar = tempRecord.t;
rec = tempRecord;
}
}
return(hitAnything);
}
public static bool Generic(Ray r, HitRecord rec,
ref float3 attenuation, ref Ray scattered, ref Random rng)
{
switch (rec.material.type)
{
case MaterialType.Lambertian:
return(Diffuse(r, rec, ref attenuation, ref scattered, ref rng));
case MaterialType.Metal:
return(Metal(r, rec, ref attenuation, ref scattered, ref rng));
case MaterialType.Dielectric:
// The dark sphere outline bug was fixed by adding this line, which
// changes the state of the RNG so reflection probability works somehow.
// this doesn't work if you call .NextFloat() inside .Dielectric() ??
// DON'T REMOVE
rng.NextFloat();
return(Dielectric(r, rec, ref attenuation, ref scattered, ref rng));
}
return(false);
}
public bool Scatter(HitRecord rec,
ref float3 attenuation, ref Ray scattered, ref Random rng)
{
return(ScatterMethod.Generic(this, rec, ref attenuation, ref scattered, ref rng));
}