private Ray GetRay(Vec3d x)
{
Vec3d direction = position - x;
direction.Normalize();
return(new Ray(x + direction * 1e-6f, direction));
}
public Ray SightLine(float x, float y)
{
Vec3d v = (x - 0.5f) * right * fovScale;
Vec3d u = (y - 0.5f) * up * fovScale;
Vec3d direction = v + u + front;
direction.Normalize();
return(new Ray(viewPoint, direction));
}
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;
}
public Plane(Vec3d n, float l)
{
n.Normalize();
pos = l * n;
normal = n;
}
public DirectionalLight(Vec3d d, float l)
{
d.Normalize();
direction = d;
luminance = l;
}