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BVHTree fix (non 2.47)

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It was building incorrect trees when there was only 1 leaf.
Code fixed to always generate a tree with at least 1 branch.. since most of bvh code relies on this.
This commit is contained in:
Andre Susano Pinto 2008-08-17 23:48:16 +00:00
parent 0c79804dbe
commit 89a735e4f8
1 changed files with 12 additions and 0 deletions
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12
source/blender/blenlib/intern/BLI_kdopbvh.c
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@ -634,6 +634,18 @@ static void non_recursive_bvh_div_nodes(BVHTree *tree, BVHNode *branches_array,
BVHBuildHelper data;
int depth;
//Most of bvhtree code relies on 1-leaf trees having at least one branch
//We handle that special case here
if(num_leafs == 1)
{
BVHNode *root = branches_array+0;
refit_kdop_hull(tree, root, 0, num_leafs);
root->main_axis = get_largest_axis(root->bv) / 2;
root->totnode = 1;
root->children[0] = leafs_array[0];
return;
}
branches_array--; //Implicit trees use 1-based indexs
build_implicit_tree_helper(tree, &data);