public static float Dot(Vector v, Normal n)
{
if (v.HasNaNs() || n.HasNaNs()) throw new InvalidOperationException();
return v.x * n.x + v.y * n.y + v.z * n.z;
}
public static float Dot(Normal n1, Normal n2)
{
if (n1.HasNaNs() || n2.HasNaNs()) throw new InvalidOperationException();
return n1.x * n2.x + n1.y * n2.y + n1.z * n2.z;
}
public static float Dot(Normal n, Vector v)
{
if (n.HasNaNs() || v.HasNaNs()) throw new InvalidOperationException();
return n.x * v.x + n.y * v.y + n.z * v.z;
}