You can shear the prism with a matrix transformation. Something like:

matrix < 1, 1, 0,
         0, 1, 0,
         0, 0, 1,
         0, 0, 0 >

Margus

eric wrote:
> 
> How to make an incline prism with POVray ?
> 
> I can find in User's guide how to make a prism with a base in a plan, and
> going 'upward' (i.e if the base is in x,z plan, the moving axis of the prism
> is along the y vector.
> 
> Buit how can I do a prism inclined like the Pise tower ? (with, for instance
> a moving vector incline with 20 degrees to an axis..).
> 
> Is my only choice is to use a mesh or a straight prism cut by 'inclined
> boxes' ? That would be very long and tedious compared to my simple polygonal
> base and prism shape...
> 
> I could use SPatch, but I need a rigorous definition of the polygonal base,
> and in SPatch I can't define coordinates other than by moving the cursor and
> counting the grid marks....
> 
> Thanks you for your help.

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