On 8/2/2018 6:26 PM, Mike Horvath wrote:
> Are there isosurface functions for the hyperboloid? Both the saddle and 
> hourglass versions. Thanks!
> 
> 
> Mike

I need to create confocal ellipsoids and hyperboloids, with a cross 
section like in this image

https://commons.wikimedia.org/wiki/File:Elliptical_coordinates_grid.svg

Is this possible with isosurfaces? The parametric formulas are easier to 
deal with, but I don't think you can do offset curves with the 
parametrics. Am I wrong?


Mike

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