setRotate method
Sets Matrix to rotate by degrees about a pivot point at (px, py). The pivot point is unchanged when mapped with Matrix.
Positive degrees rotates clockwise.
@param degrees angle of axes relative to upright axes @param px pivot x @param py pivot y
Implementation
void setRotate(double degrees, {double px = 0, double py = 0}) =>
c.mnn_cv_matrix_set_rotate(ptr, degrees, px, py);