200 void operator*=(Point& pt, const Matrix& m)  in operator *=()  argument
202     auto tx = pt.x * m.e11 + pt.y * m.e12 + m.e13;  in operator *=()
203     auto ty = pt.x * m.e21 + pt.y * m.e22 + m.e23;  in operator *=()
204     pt.x = tx;  in operator *=()
205     pt.y = ty;  in operator *=()
209 Point operator*(const Point& pt, const Matrix& m)  in operator *()  argument
211     auto tx = pt.x * m.e11 + pt.y * m.e12 + m.e13;  in operator *()
212     auto ty = pt.x * m.e21 + pt.y * m.e22 + m.e23;  in operator *()
361 …Point pt ={a * start.x + b * ctrl1.x + c * ctrl2.x + d * end.x, a * start.y + b * ctrl1.y + c * ct…  in angle()  local
362     pt.x *= 3;  in angle()
363     pt.y *= 3;  in angle()
365     return rad2deg(tvg::atan2(pt.y, pt.x));  in angle()