public void VectorAngleToPlaneTest()
{
Plane3d s = new Plane3d();
// XY plane
Vector3d v = new Vector3d(1, 0, 0);
Assert.IsTrue(Abs(v.AngleTo(s)) < GeometRi3D.Tolerance);
Assert.IsTrue(Abs(s.AngleTo(v)) < GeometRi3D.Tolerance);
v = new Vector3d(0, 0, 1);
Assert.IsTrue(Abs(v.AngleTo(s) - PI / 2) < GeometRi3D.Tolerance);
Assert.IsTrue(Abs(s.AngleTo(v) - PI / 2) < GeometRi3D.Tolerance);
v = new Vector3d(0, 0, -1);
Assert.IsTrue(Abs(v.AngleTo(s) - PI / 2) < GeometRi3D.Tolerance);
Assert.IsTrue(Abs(s.AngleTo(v) - PI / 2) < GeometRi3D.Tolerance);
v = new Vector3d(1, 0, 1);
Assert.IsTrue(Abs(v.AngleTo(s) - PI / 4) < GeometRi3D.Tolerance);
Assert.IsTrue(Abs(s.AngleTo(v) - PI / 4) < GeometRi3D.Tolerance);
v = new Vector3d(1, 0, -1);
Assert.IsTrue(Abs(v.AngleTo(s) - PI / 4) < GeometRi3D.Tolerance);
Assert.IsTrue(Abs(s.AngleTo(v) - PI / 4) < GeometRi3D.Tolerance);
}
