Large STLs uses lots of memory about openscad HOT 6 CLOSED

Actually, with more testing, even just importing the model and rendering with CGAL (F6) causes a crash on Windows. I'm using version 2012.02.19.

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I have similar issues with multiple imported STLs. Some crash, others simply won't render the STL, so I am haveing to revert to using Blender.

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Same issue here with version "2011.12.30".

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Just tested this on the latest OpenSCAD version (2013.01) on Mac. It works well here, but needs quite some memory to do the calculation.

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I did some testing on linux 64bit. This line seems to be a problem:

translate([0,-50,0]) cube([50,50,29]);

It makes a box that doesn't actually intersect the STL.

I replaced it with this:

translte([0,0,0]) cube([50,50,29]);

and I get a CGAL assertion violation.

So I tried this:

translate([-1,-1,-1]) cube([150,150,30]);

and I finally got a good result.

However, it did take up more than 2 Gigabytes of RAM.

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This is a well-known weakness of using CGAL's Nef3 polyhedrons

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