Because, AFAIK, representing transformations as 3x3 matrices is only natural for affine, perspective and combinations, but not for more general warps, it is my opinion that what should be passed to samplers (so that those which may downsample use it) should either be an array with four double entries or an object of a type which could be named GeglMatrix2. Is it really worth it to create (name) a new GEGL type just for this purpose? A plain array sure seems more expedient. Nicolas Robidoux _______________________________________________ Gegl-developer mailing list Gegl-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gegl-developer