Tor Olav Kristensen wrote:
> 
> Jim's question in povray.advanced-users about usage of the Shear_Trans 
> macro
> made me play around with shearing of different shapes.
> 
> This image shows some supertorus isosurfaces sheared in different 
> directions.
> 
> 
> ------------------------------------------------------------------------
> 
Beautiful effect, makes me think, a little, of soapstone carving.  The 
method gives an interesting insight also. Applying the shearing macro to 
an iso-surface is something I would not have expected.  Being a mere 
mortal with maths, I would have guessed, rather, that you'd done the 
shearing with the iso-surface function somehow.

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