[OpenSCAD] Negative ghosts

Triffid Hunter triffid.hunter at gmail.com
Fri Sep 23 03:11:56 CEST 2011


I believe it's a side effect of abusing opengl Z-buffers to perform
difference operations. the objects render correctly with CGAL unless
an unrelated issue has also occurred.

Knowing that it's a z-buffer abuse issue doesn't suggest any quick fix to me.

On Fri, Sep 23, 2011 at 7:28 AM, nop head <nop.head at gmail.com> wrote:
> If I make an object using difference() or intersection() to remove
> part of it then the object looks fine in opencsg but if I place it
> next to another object such that the subtracted part is coincident
> with the face of another object then the negative object becomes
> visible. Is this a bug in opencsg or openscad?


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