managed grids seems to work, need to test pruning though
small typo in lerp
Merge pull request #1 from seacy/patch-1

small typo in lerp
Merge branch 'master' of github.com:mtao/sandbox
grid includes an untested 2d coordinate function
Merge branch 'master' of github.com:mtao/sandbox
Merge branch 'master' of github.com:mtao/sandbox
Merge branch 'master' of github.com:mtao/sandbox
MACGridFactory can now generate indexToWorld function objects for each of the grid types, added UVGrid and UVWGrid types for rendering purposes.  core/main has some extra little code fragments to test the new indexToWorld functionality.
Added support for rendering vector fields and added a background grid rendering.
Adding some extra const-ness where it was appropriate to grid
Advection core now works, with explicit euler and runge-kutta 2 working as examples.
Added a coord->index tool to help generate boundary matrices.
Merge branch 'master' of github.com:mtao/sandbox
adding a custom gradient setup that changes difference scheme depending on the voxel topology
changed isValueOn&getValue to probeValue (so less accesses), removed the debug statements, and activated the vector output in the main to check if vec3<vec3> worked
Adding preliminary block fem solver in a broken state, carried from a diff repository.
starting halfedge implementation
adding a really poorly written block fem solver that needs to be fixed
hemesh maybe works, need to write a meshloader for this core