Commit: d9a4945bb28746a9bfb4c6e01e3e0e8aa2dc80a3
Author: Lukas Tönne
Date: Sat Aug 26 12:41:58 2017 +0100
Branches: strand_editmode
https://developer.blender.org/rBd9a4945bb28746a9bfb4c6e01e3e0e8aa2dc80a3
Added a 1-cell margin to the grid dimensions to simplify neighbor lookups.
===================================================================
M source/blender/blenkernel/intern/mesh_sample.c
===================================================================
diff --git a/source/blender/blenkernel/intern/mesh_sample.c
b/source/blender/blenkernel/intern/mesh_sample.c
index 911d2496892..b946911abe2 100644
--- a/source/blender/blenkernel/intern/mesh_sample.c
+++ b/source/blender/blenkernel/intern/mesh_sample.c
@@ -867,12 +867,13 @@ static void
generator_poissondisk_bind(MSurfaceSampleGenerator_PoissonDisk *gen)
dm->getMinMax(dm, min, max);
mul_v3_fl(min, gen->grid_scale);
mul_v3_fl(max, gen->grid_scale);
- gen->grid_offset[0] = (int)floorf(min[0]);
- gen->grid_offset[1] = (int)floorf(min[1]);
- gen->grid_offset[2] = (int)floorf(min[2]);
- gen->grid_size[0] = (int)floorf(max[0]) - gen->grid_offset[0];
- gen->grid_size[1] = (int)floorf(max[1]) - gen->grid_offset[1];
- gen->grid_size[2] = (int)floorf(max[2]) - gen->grid_offset[2];
+ /* grid size gets an empty 1 cell margin to simplify neighbor
lookups */
+ gen->grid_offset[0] = (int)floorf(min[0]) - 1;
+ gen->grid_offset[1] = (int)floorf(min[1]) - 1;
+ gen->grid_offset[2] = (int)floorf(min[2]) - 1;
+ gen->grid_size[0] = (int)floorf(max[0]) - gen->grid_offset[0] +
2;
+ gen->grid_size[1] = (int)floorf(max[1]) - gen->grid_offset[1] +
2;
+ gen->grid_size[2] = (int)floorf(max[2]) - gen->grid_offset[2] +
2;
}
// Generate initial uniform random point set
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