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Merge pull request #638 from ZappoMan/bug_fixes

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fix random big average voxels slightly in view bug
This commit is contained in:
Philip Rosedale 2013-07-10 14:07:20 -07:00
commit 5a550d7974
1 changed files with 32 additions and 2 deletions
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34
libraries/voxels/src/VoxelTree.cpp
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@ -1270,9 +1270,39 @@ int VoxelTree::encodeTreeBitstreamRecursion(VoxelNode* node, unsigned char* outp
bool childWasInView = (childNode && params.deltaViewFrustum &&
(params.lastViewFrustum && ViewFrustum::INSIDE == childNode->inFrustum(*params.lastViewFrustum)));
// There are two types of nodes for which we want to send colors:
// 1) Leaves - obviously
// 2) Non-leaves who's children would be visible and beyond our LOD.
// NOTE: This code works, but it's pretty expensive, because we're calculating distances for all the grand
// children, which we'll end up doing again later in the next level of recursion. We need to optimize this
// in the future.
bool isLeafOrLOD = childNode->isLeaf();
if (params.viewFrustum && childNode->isColored() && !childNode->isLeaf()) {
int grandChildrenInView = 0;
int grandChildrenInLOD = 0;
for (int grandChildIndex = 0; grandChildIndex < NUMBER_OF_CHILDREN; grandChildIndex++) {
VoxelNode* grandChild = childNode->getChildAtIndex(grandChildIndex);
if (grandChild && grandChild->isColored() && grandChild->isInView(*params.viewFrustum)) {
grandChildrenInView++;
float grandChildDistance = grandChild->distanceToCamera(*params.viewFrustum);
float grandChildBoundaryDistance = boundaryDistanceForRenderLevel(grandChild->getLevel() + 1);
if (grandChildDistance < grandChildBoundaryDistance) {
grandChildrenInLOD++;
}
}
}
// if any of our grandchildren ARE in view, then we don't want to include our color. If none are, then
// we do want to include our color
if (grandChildrenInView > 0 && grandChildrenInLOD==0) {
isLeafOrLOD = true;
}
}
// track children with actual color, only if the child wasn't previously in view!
if (childNode && childNode->isColored() && !childWasInView && !childIsOccluded) {
if (childNode && isLeafOrLOD && childNode->isColored() && !childWasInView && !childIsOccluded) {
childrenColoredBits += (1 << (7 - originalIndex));
inViewWithColorCount++;
}