diula
diula
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Point Clouds with lots of points Aug. 8, 2009, 11:31 a.m.
peliosisYou are confusing filtering and partitioning. Octrees/grids/kd-trees, etc are only a method for spatial subdivision to accelerate data lookup (or reduce memory when looking up data from a file). Such a data-structure may be extended to contain for each node some information about it's child nodes (average values, sum, etc) - such a structure is “filtered”, e.g. renderman's brickmap.
Octree is a mipmapped structure for efficiently wrangle pointclouds, and prman has it for a couple of years now.
For example: 3Delights/PRman point couds are tiled (don't know if they use a grid or octree exactly), but they are not filtered - each node contains just the points. Brickmaps are pre-filtered - once the octree is created, starting from the leafs an average of their values is computed, all the way up to the top (root) node - just like a texture mipmap.
mantra - suppor for level-of-detail? May 18, 2009, 1:48 p.m.
Hello,
Does Mantra support level-of-detail rendering (as in Renderman)?
Does Mantra support level-of-detail rendering (as in Renderman)?
VEX - 'inputnum' argument to getneighbour function Dec. 4, 2008, 10:42 a.m.
A-ha, didn't think of that. Thanks a lot keyframe