public void A_smooth_triangle_uses_u_and_v_to_interpolate_the_normal()
{
var i = new Intersection(1, _tri, 0.45, 0.25);
var n = _tri.NormalAt(Tuple.Point(0, 0, 0), i);
n.Should().Be(Tuple.Vector(-0.5547, 0.83205, 0));
}
public void SmoothTriangleNormals()
{
Intersection i = new Intersection(1, tri, 0.45, 0.25);
Tuple n = tri.NormalAt(Tuple.Point(0, 0, 0), i);
Assert.AreEqual(n, Tuple.Vector(-0.5547, 0.83205, 0));
}
public void ASmoothTriangleUsesUVToInterpolateTheNormal()
{
var i = new Intersection(1, tri, 0.45, 0.25);
var n = tri.NormalAt(new Point(0, 0, 0), i);
Assert.AreEqual(new Vector(-0.5547, 0.83205, 0), n);
}
public void When_computing_the_normal_vector_use_u_and_v_to_interpolate_the_normal()
{
var intersection = new Intersection(1, _triangle, 0.45, 0.25);
var normal = _triangle.NormalAt(Point.Zero, intersection);
normal.Should().Be(new Vector(-0.5547, 0.83205, 0));
}
public void SmoothTriangleUsesUvToInterpolateTheNormal()
{
var i = new Intersection(1, tri, 0.45, 0.25);
var n = tri.NormalAt(Helper.CreatePoint(0, 0, 0), i);
Check.That(n).IsEqualTo(Helper.CreateVector(-0.5547, 0.83205, 0));
}
public void SmoothTriangle_ShouldUseUvToInterpolateTheNormal()
{
var p1 = new Point(0, 1, 0);
var p2 = new Point(-1, 0, 0);
var p3 = new Point(1, 0, 0);
var n1 = new Vector(0, 1, 0);
var n2 = new Vector(-1, 0, 0);
var n3 = new Vector(1, 0, 0);
var tri = new SmoothTriangle(p1, p2, p3, n1, n2, n3);
var i = new Intersection(1, tri, 0.45, 0.25);
var n = tri.NormalAt(new Point(0, 0, 0), i);
Assert.Equal(new Vector(-0.5547, 0.83205, 0), n, VectorComparer);
}
