The equation whose solution describes the new shape function varies on each 
cell and is determined by the original shape function on that cell.for this 
matter,creating a triangulation object of the reference cell might not help and 
I'm also not quite familiar with how the mapping works.
Since I can get all the information create_triangulation() function needs 
through a cell_iterator, I suppose I can create a triangulation object of the 
real cell this way?

> If the reference cell has a simple shape (for example it is the unit square) 
> then you can use the usual methods in GridGenerator. Otherwise you'll want to 
> use create_triangulation(), as shown for example in step-14.
> 
> W.
> 
> -------------------------------------------------------------------------
> Wolfgang Bangerth                email:            [email protected]
>                                  www: http://www.math.tamu.edu/~bangerth/
> 
                                          
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