public void Transform()
{
// TScale
Vector3D vi = new Vector3D(1, 1, 1);
TScale s = new TScale(1, 1, 2);
Vector3D vo = s * vi;
Assert.True(AlmostEqual(vi.x * s.x, vo.x));
Assert.True(AlmostEqual(vi.y * s.y, vo.y));
Assert.True(AlmostEqual(vi.z * s.z, vo.z));
// TTranslate
TTranslate t1 = new TTranslate(1, 0, 1);
vo = t1 * vi;
Assert.True(AlmostEqual(vi.x + t1.x, vo.x));
TTranslate t2 = new TTranslate(vi);
vo = t2 * vi;
Assert.True(AlmostEqual(2 * vi.x, vo.x));
Assert.True(AlmostEqual(2 * vi.y, vo.y));
Assert.True(AlmostEqual(2 * vi.z, vo.z));
// Rotate origin
vi = new Vector3D(1, 0, 0);
TRotateOrigin ro = new TRotateOrigin(0, 0, 1, Math.PI);
vo = ro * vi;
Assert.True(AlmostEqual(-vi.x, vo.x));
ro = new TRotateOrigin(0, 1, 0, Math.PI);
vo = ro * vi;
Assert.True(AlmostEqual(-vi.x, vo.x));
ro = new TRotateOrigin(1, 0, 0, Math.PI / 2);
vo = ro * vi;
Assert.True(AlmostEqual(vi.x, vo.x));
ro = new TRotateOrigin(1, 0, 1, Math.PI);
vo = ro * vi;
Assert.True(AlmostEqual(vi.x, vo.z));
// Rotate X
vi = new Vector3D(1, 1, 0);
TRotateX rx = new TRotateX(Math.PI / 2);
vo = rx * vi;
Assert.True(AlmostEqual(vi.x, vo.x));
Assert.True(AlmostEqual(vi.y, vo.z));
// Rotate Y
vi = new Vector3D(1, 0, 0);
TRotateY ry = new TRotateY(Math.PI);
vo = ry * vi;
Assert.True(AlmostEqual(vi.x, -vo.x));
// Rotate Z
vi = new Vector3D(1, 1, 1);
TRotateZ rz = new TRotateZ(Math.PI);
vo = rz * vi;
Assert.True(AlmostEqual(vi.x, -vo.x));
Assert.True(AlmostEqual(vi.y, -vo.y));
}
public void Transform()
{
// TScale
Vector3D vi = new Vector3D(1, 1, 1);
TScale s = new TScale(1, 1, 2);
Vector3D vo = s * vi;
Assert.True(AlmostEqual(vi.x * s.x, vo.x));
Assert.True(AlmostEqual(vi.y * s.y, vo.y));
Assert.True(AlmostEqual(vi.z * s.z, vo.z));
// TTranslate
TTranslate t1 = new TTranslate(1, 0, 1);
vo = t1 * vi;
Assert.True(AlmostEqual(vi.x + t1.x, vo.x));
TTranslate t2 = new TTranslate(vi);
vo = t2 * vi;
Assert.True(AlmostEqual(2 * vi.x, vo.x));
Assert.True(AlmostEqual(2 * vi.y, vo.y));
Assert.True(AlmostEqual(2 * vi.z, vo.z));
// Rotate origin
vi = new Vector3D(1, 0, 0);
TRotateOrigin ro = new TRotateOrigin(0, 0, 1, Math.PI);
vo = ro * vi;
Assert.True(AlmostEqual(-vi.x, vo.x));
ro = new TRotateOrigin(0, 1, 0, Math.PI);
vo = ro * vi;
Assert.True(AlmostEqual(-vi.x, vo.x));
ro = new TRotateOrigin(1, 0, 0, Math.PI/2);
vo = ro * vi;
Assert.True(AlmostEqual(vi.x, vo.x));
ro = new TRotateOrigin(1, 0, 1, Math.PI);
vo = ro * vi;
Assert.True(AlmostEqual(vi.x, vo.z));
// Rotate X
vi = new Vector3D(1, 1, 0);
TRotateX rx = new TRotateX(Math.PI / 2);
vo = rx * vi;
Assert.True(AlmostEqual(vi.x, vo.x));
Assert.True(AlmostEqual(vi.y, vo.z));
// Rotate Y
vi = new Vector3D(1, 0, 0);
TRotateY ry = new TRotateY(Math.PI);
vo = ry * vi;
Assert.True(AlmostEqual(vi.x, -vo.x));
// Rotate Z
vi = new Vector3D(1, 1, 1);
TRotateZ rz = new TRotateZ(Math.PI);
vo = rz * vi;
Assert.True(AlmostEqual(vi.x, -vo.x));
Assert.True(AlmostEqual(vi.y, -vo.y));
}