Paul Bourke wrote:
> 
> In general, somewhere before version 3.6, isosurface{} and parametric{}
> started taking MUCH longer to render than earlier.

I can't really confirm that.  Could you give an example (for isosurface 
- parametric is a completely different issue)?

The slowdown due to the max() function in this case is really extreme 
though - but i doubt this is different in 3.5.

Christoph

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