Пример #1
0
        public void It_Returns_An_Point_Along_The_Ray(Vector expected, double amplitude)
        {
            // Arrange
            Ray ray = new Ray(new Point3(-10, 5, 10), new Vector3(20, 10, -5));

            // Act
            Vector pointAlongTheRay = ray.OnRay(amplitude);

            // Assert
            pointAlongTheRay.Should().BeEquivalentTo(expected);
        }
Пример #2
0
        public void It_Returns_A_Point_At_The_T_Parameter()
        {
            // Arrange
            Ray ray        = new Ray(new Point3(0, 0, 0), new Vector3(-7, 10, -5));
            var expectedPt = new Point3(-8.75, 12.5, -6.25);

            // Act
            var pt = ray.PointAt(1.25);

            // Assert
            pt.Should().BeEquivalentTo(expectedPt);
        }
Пример #3
0
        public void It_Returns_The_Distance_To_A_Point()
        {
            // Arrange
            Ray          ray = new Ray(new Point3(0, 0, 0), new Vector3(30, 45, 0));
            var          pt  = new Point3(10, 20, 0);
            const double distanceExpected = 2.7735009811261464;

            // Act
            double distance = ray.DistanceTo(pt);

            // Assert
            distance.Should().Be(distanceExpected);
        }
Пример #4
0
        public void It_Returns_The_Closest_Point()
        {
            // Arrange
            Ray ray        = new Ray(new Point3(0, 0, 0), new Vector3(30, 45, 0));
            var pt         = new Point3(10, 20, 0);
            var expectedPt = new Point3(12.30769230769231, 18.461538461538463, 0);

            // Act
            var closestPt = ray.ClosestPoint(pt);

            // Assert
            closestPt.Should().BeEquivalentTo(expectedPt);
        }