58             Matrix m;                 //input matrix  member
67                 m.e11 = 1.0f;  in update()
68                 m.e12 = 0.0f;  in update()
69                 m.e21 = 0.0f;  in update()
70                 m.e22 = 1.0f;  in update()
71                 m.e31 = 0.0f;  in update()
72                 m.e32 = 0.0f;  in update()
73                 m.e33 = 1.0f;  in update()
74                 tvg::scale(&m, scale, scale);  in update()
75                 tvg::rotate(&m, degree);  in update()
111         bool transform(const Matrix& m)  in transform()
113             if (&tr.m != &m) tr.m = m;  in transform()
125             return tr.m;