public InterResult Intersect(Ray ray)
{
Vec3d r = ray.direction.Cross(e2);
Vec3d s = ray.position - v1;
float a = e1 % r;
float f = 1 / a;
Vec3d q = s.Cross(e1);
float u = s % r;
if (a > 1e-6f)
{
if (u < 0 || u > a)
{
return(null);
}
float v = ray.direction % q;
if (v < 0 || u + v > a)
{
return(null);
}
float t = f * (e2 % q);
return(new InterResult(t, ray.GetFront(t), this));
}
return(null);
}
public Triangle(Vec3d v1, Vec3d v2, Vec3d v3)
{
this.v1 = v1;
this.v2 = v2;
this.v3 = v3;
e1 = v2 - v1;
e2 = v3 - v1;
normal = e1.Cross(e2);
normal.Normalize();
}
public PerspectiveCamera(Vec3d vp, Vec3d f, Vec3d refUp, float fov)
{
viewPoint = vp;
f.Normalize();
front = f;
right = f.Cross(refUp);
right.Normalize();
up = right.Cross(f);
fovScale = (float)Math.Tan(fov * Pi * 0.5f / 180) * 2;
}