Group CheckDirection methods into a helper class

Fix voxelization due to model water-tightness

add aabb to trim the filled results

Merge branch 'master' of https://github.com/k-ye/PbfVs

add bunny drop, imperfect

Add LICENSE

oops

Cleanup

Make object model position/scale configurable

Add the bunny obj model file

update .gitignore

Added an obj file loader.

clang format all the source code

small cleanup

add sprite rendering