public void Invert ()
{
var m = new Matrix (1, 0, 0, 1, 0, 0);
m.Invert ();
CheckMatrix (new Matrix (1, 0, 0, 1, 0, 0), m);
m = new Matrix (1, 0, 0, 1, 5, 5);
m.Invert ();
CheckMatrix (new Matrix (1, 0, 0, 1, -5, -5), m);
m = new Matrix (1, 0, 0, 2, 5, 5);
m.Invert ();
CheckMatrix (new Matrix (1, 0, 0, 0.5, -5, -2.5), m);
m = new Matrix (0, 2, 4, 0, 5, 5);
m.Invert ();
CheckMatrix (new Matrix (0, 0.25, 0.5, 0, -2.5, -1.25), m);
}
// "Transform is not invertible."
public void InvertException1 ()
{
var m = new Matrix (2, 2, 2, 2, 0, 0);
m.Invert ();
}