public override void ComputeScatteringFunctions(SurfaceInteraction inter, bool allowMultipleLobes)
{
if (Material != null)
{
Material.ComputeScatteringFunctions(inter, allowMultipleLobes);
}
}
public BSDF(SurfaceInteraction inter, float eta = 1)
{
Eta = eta;
ng = inter.N;
ns = inter.Shading.N;
ss = inter.Shading.DpDu.Normalized();
ts = Vector3 <float> .Cross(ns.ToVector3(), ss);
}
public override bool Intersect(Ray ray, out SurfaceInteraction inter)
{
if (!Shape.Intersect(ray, out float tHit, out inter))
{
return(false);
}
ray.Tmax = tHit;
inter.Primitive = this;
return(true);
}
public override bool Intersect(Ray ray, out SurfaceInteraction inter)
{
var hit = false;
float closestT = float.PositiveInfinity;
inter = null;
foreach (var p in Primitives)
{
if (/*p.WorldBounds.IntersectP(ray, out float t0, out float t1) && */ p.Intersect(ray, out SurfaceInteraction inter2) && ray.Tmax < closestT)
{
hit = true;
closestT = ray.Tmax;
inter = inter2;
}
}
return(hit);
}
public abstract bool Intersect(Ray ray, out float t, out SurfaceInteraction inter);
public override bool Intersect(Ray ray, out SurfaceInteraction inter)
{
throw new NotImplementedException();
}
public override void ComputeScatteringFunctions(SurfaceInteraction inter, bool allowMultipleLobes)
{
throw new NotImplementedException();
}
public bool Intersect(Ray ray, out SurfaceInteraction inter)
{
return(Aggregate.Intersect(ray, out inter));
}
public abstract void ComputeScatteringFunctions(SurfaceInteraction inter, bool allowMultipleLobes); // TODo transport mode
