protected IntersectionCollection LocalIntersect(Ray localRay, Func <double, double, double, Intersection> newIntersection)
{
var dirCrossE2 = localRay.Direction.Cross(EdgeVec2);
var det = EdgeVec1.Dot(dirCrossE2);
if (Math.Abs(det) < C.Epsilon)
{
return(new IntersectionCollection());
}
var f = 1 / det;
var p1ToOrigin = localRay.Origin - P1;
var u = f * p1ToOrigin.Dot(dirCrossE2);
if (u < 0 || u > 1)
{
return(new IntersectionCollection());
}
var originCrossE1 = p1ToOrigin.Cross(EdgeVec1);
var v = f * localRay.Direction.Dot(originCrossE1);
if (v < 0 || u + v > 1)
{
return(new IntersectionCollection());
}
var t = f * EdgeVec2.Dot(originCrossE1);
return(new IntersectionCollection(newIntersection(t, u, v)));
}
public Triangle(Tuple p1, Tuple p2, Tuple p3)
{
P1 = p1;
P2 = p2;
P3 = p3;
EdgeVec1 = p2 - p1;
EdgeVec2 = p3 - p1;
Normal = EdgeVec2.Cross(EdgeVec1).Normalize;
}
