Matrix.transformDistance
void transformDistance(out double dx, out double dy)Transforms the distance vector (dx,dy) by matrix. This is similar to [cairo.matrix.Matrix.transformPoint] except that the translation components of the transformation are ignored. The calculation of the returned vector is as follows:
<programlisting>dx_new = xx dx + xy dy; dy_new = yx dx + yy dy;
</programlisting>Parameters
dx | X component of a distance vector. An in/out parameter |
dy | Y component of a distance vector. An in/out parameter |