- don't recurse down trees that are fully INSIDE of the view frustum, because those nodes
are guaranteed to also be INSIDE
- changes to extraData of the recurse operation to make this possible
- adding debug stats to track how many nodes are inside, outside, intersect
- change call to removeOutOfView() to not call if last elapsed time has not
yet passed since last call (similar to treeToArrays() logic)
- make octalCode and children members private
- add public getters for accessing these private members
- change constructor to require an OctalCode for all non-roots
- default constructor constructs a rootNode
- make primary access for deleting, adding, and accessing children through public methods that do bookkeeping
- calculate AABox on voxel creation so that we don't need to do all the math when we deal with voxels
- added methods on VoxelNode for common items like getCorner(), getCenter(), getLevel(), etc
- fixing some cases where TREE_SCALE was not using constant in prep for making TREE_SCALE larger
- added createLine() to VoxelTree
- added axis lines made of voxels to scene
- added corner points made of voxels to scene
- Add LOD/distance culling to VoxelTree:encodeTreeBitstreamRecursion()
and VoxelTree::searchForColoredNodesRecursion()
- added new levels to boundaryDistanceForRenderLevel()
- added more spheres to the scene to get a better sense of LOD behavior
- fixed LOD bug related to mismatch with getting node position
- changed VoxelSystem to honor new VoxelNode color support for false color
- added some implementations of tree recursion that do things like false
color the tree for distance, randomly, or resetting to true color, or
stomping on the local version of the true color to debug packet sending
