Now we have:

1) KisBezierUtils --- collection of utility functions to work
   with a single bezier curve

2) KisBezierPatch --- a patch defined by four bezier curves defined
   as per SVG2 specification

3) KisBezierMesh --- a basic mesh made up of multiple KisBezierPatch
   patches

4) KisBezierTransformMesh --- a mesh that can transform a QImage or a
   KisPaintDevice

5) KisBezierGradientMesh --- a mesh that can fill a QImage with a mesh
   gradient as defined in SVG2 specification