public void If_the_triangle_is_behind_the_ray_the_result_is_null()
{
var ray = new Ray(Point.Zero, -Vector.UnitX);
var triangle = new Triangle(
new Point(2, 2, 0),
new Point(2, -2, 2),
new Point(2, -2, -2)
);
Assert.Null(triangle.FindClosestIntersectionWith(ray));
}
public void If_the_ray_points_at_the_triangle_the_correct_distance_is_set_on_the_result()
{
var ray = new Ray(Point.Zero, Vector.UnitX);
var triangle = new Triangle(
new Point(2, 2, 0),
new Point(2, -2, 2),
new Point(2, -2, -2)
);
Assert.Equal(2d, triangle.FindClosestIntersectionWith(ray).Distance);
}
