Hi Anis,

> How if the target surface contains several faces, base on
> your example the target surface in only single face
> ( sphere, tabular... ) ?

The mapping is between a base surface and a target surface - meaning 1 single base surface and 1 single target surface. When you have an object made up of multiple faces there is one separate surface for each face so that means you can target just one face in a situation like that.

It will best be used to target a somewhat broader and larger piece of a multi-surface object. Usually it is best for smooth shaped areas of a model to be made out of one large surface anyway though instead of out of a bunch of little separate faces.

- Michael