public void SkewPrepend() { var m = Matrix.Identity; m.SkewPrepend (10, 15); CheckMatrix (new Matrix (1, 0.267949192431123, 0.176326980708465, 1, 0, 0), m); m = new Matrix (1, 2, 2, 1, 3, 3); m.SkewPrepend (10, 15); CheckMatrix (new Matrix (1.53589838486225, 2.26794919243112, 2.17632698070847, 1.35265396141693, 3, 3), m); }