SimpleVolume and SurfaceExtractor bounds bug

StefanLundmark · **Joined:** Tue Jun 05, 2012 8:49 pm **Posts:** 2

Code:

PolyVox::SimpleVolume <PolyVox::MaterialDensityPair44> volData (PolyVox::Region (PolyVox::Vector3DInt32(0,0,0), PolyVox::Vector3DInt32 (120, 120, 120)));
createSphereInVolume (volData, 60);

Results in the following:

Using a slightly smaller Sphere or increasing the Volume Size avoids the problem, probably because the Sphere reaches the bounds of the Volume? I have no idea.

If I use a Cubic Surface extractor, there are no issues with the vertices themselves though the cubes stop appearing at the edge like I expect it to.

David Williams · **Joined:** Sun May 04, 2008 6:35 pm **Posts:** 1827

Hi, thanks for reporting this. It probably is a bug as these edge cases can be tricky to handle...

Unfortunatly I'm not in a position to fix it at the moment as PolyVox is undergoing some changes, but I'll be sure to take a look before the next release.

StefanLundmark · **Joined:** Tue Jun 05, 2012 8:49 pm **Posts:** 2

Thanks for your reply, David!

David Williams · **Joined:** Sun May 04, 2008 6:35 pm **Posts:** 1827

I just had a go at reproducing this but without any success. I tried both the current Git version and also the last snapshot (Dec 2011). If anyone else sees this issue and is able to provide a more complete example then I'd be interested to see it. The original report contains some interesting use of materials which I don't know exactly how to reproduce... perhaps that was relevent?

I will leave this bug report open but will proceed with the next release regardless of whether it gets fixed.

SimpleVolume and SurfaceExtractor bounds bug

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