[cairo] Fun With Mesh Patterns

[Lawrence D'Oliveiro]

The documentation for cairo_mesh_pattern_set_control_point
<http://cairographics.org/manual/cairo-cairo-pattern-t.html#cairo-mesh-pattern-set-control-point>
talks about “internal” control points. In fact, the positions of these
points do not have to be “internal” to anything at all. Setting extreme
positions for these can produce quite marked effects on the tensor
patch, as illustrated here
<http://default-cube.deviantart.com/art/Tensor-Patch-522195315>.