[OpenSCAD] Discuss Digest, Vol 38, Issue 22

cbernhardt charlie at carols62.com
Wed Jan 24 09:33:53 EST 2018


jim_klessig wrote
> I would disagree.  Your routine would be making some (probably un stated)
> assumptions  about the shape. Such as that the points do not form a
> "cave", and probably what points represent a boundary.
> For example how would your routine deal with the example I gave,  of 8
> points representing the corners of a cube.There are multiple "correct"
> representations of that set of points.
> I would suspect that your routine would assume those points are either a
> cube shaped bump in a flat plane, or a cubical hole in an otherwise flat
> plane.  Both of which are making perfectly reasonable assumptions for
> making it topographical map.But those assumptions would be/could be 
> incorrect for just that set of 8 points, "floating in space" with no other
> information.Essentially there are too many degrees of freedom for the
> problem to be solvable as he posed it.

You are correct.  My routine eliminates any duplicate XY points, so it would
not tessellate an exact cube or an overhang correctly; however, for purposes
of my headlight bezel, or 99% of our topo maps, it works fine.
Charles




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