public void RotateQuadrants()
{
var matrix = new Matrix ();
Action<double, double, double, double, double> prove = (angle, m11, m12, m21, m22) => {
matrix.SetIdentity ();
matrix.Rotate (angle);
CheckMatrix (new Matrix (m11, m12, m21, m22, 0, 0), matrix);
};
prove (90, 0, 1, -1, 0);
prove (-90, 0, -1, 1, 0);
prove (180, -1, 0, 0, -1);
prove (-180, -1, 0, 0, -1);
prove (270, 0, -1, 1, 0);
prove (-270, 0, 1, -1, 0);
prove (0, 1, 0, 0, 1);
prove (360, 1, 0, 0, 1);
prove (-360, 1, 0, 0, 1);
prove (360 + 90, 0, 1, -1, 0);
}
public void Rotate ()
{
var m = new Matrix (1, 2, 3, 4, 5, 6);
m.Rotate (33);
CheckMatrix (new Matrix (2.47258767299051,
3.85589727595096,
1.97137266882125,
2.26540420175164,
5, 6), m);
}
public void Rotate()
{
var m = Matrix.Identity;
m.Rotate (45);
CheckMatrix (new Matrix (0.707106781186548,
0.707106781186547,
-0.707106781186547,
0.707106781186548, 0, 0), m);
m = new Matrix (1, 2, 3, 4, 5, 6);
m.Rotate (33);
CheckMatrix (new Matrix (-0.25060750208463,
2.22198017090588,
0.337455563776164,
4.98859937682678,
0.925518629636958,
7.75521858274768), m);
}
