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How to get the nearest voxel from a 3d point ? http://www.volumesoffun.com/phpBB3/viewtopic.php?f=2&t=417 
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Author:  Alex [ Sat Aug 11, 2012 1:18 pm ] 
Post subject:  How to get the nearest voxel from a 3d point ? 
Hello all I have a problem with PolyVox : How to get the nearest voxel position from a 3d point ? I want to remove voxel density in a symbolic sphere (for example: create a crater). To calculate which voxel to remove, I need to know the center of this sphere. I can get the center from the 3d environnement, but i must convert it to the volume position. Can someone help me ? Thx. 
Author:  Alex [ Sat Aug 11, 2012 6:52 pm ] 
Post subject:  Re: How to get the nearest voxel from a 3d point ? 
It seems to be the same coordinations... It will be easier so => resolved 
Author:  David Williams [ Sun Aug 12, 2012 10:12 am ] 
Post subject:  Re: How to get the nearest voxel from a 3d point ? 
Glad you solved it. Be aware that there is also an offset involved if you extract a region which does not correspond to the whole volume. I.e. if you have a volumeof dimensions 128x128x128 and you extract region (32,32,32) to (96, 96, 96) then a vertex with position (0,0,0) in the mesh actually corresponds to (32,32,32). Also, watch out for offsets of 0.5. The voxel is at the centre of a cube whereas the faces surround it and are not at integer positions. 
Author:  Alex [ Mon Aug 13, 2012 6:10 pm ] 
Post subject:  Re: How to get the nearest voxel from a 3d point ? 
Thx for this advice, i will pay attention about this 
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