Define the first point of the current patch in a mesh pattern.
After this call the current point will be (x, y).
Note: If pattern is not a mesh pattern then pattern will be put
into an error status with a status of
cairo.types.Status.PatternTypeMismatch. If pattern has no current
patch or the current patch already has at least one side, pattern
will be put into an error status with a status of
cairo.types.Status.InvalidMeshConstruction.
Define the first point of the current patch in a mesh pattern.
After this call the current point will be (x, y).
Note: If pattern is not a mesh pattern then pattern will be put into an error status with a status of cairo.types.Status.PatternTypeMismatch. If pattern has no current patch or the current patch already has at least one side, pattern will be put into an error status with a status of cairo.types.Status.InvalidMeshConstruction.