Real purpose of OpenVDB and GLFW in PicoGK

[hariharan382]

HI, your work greatly inspired me, but, I am not getting real use of the usage of OpenVDB(voxel based) data structure, why was it used in pickGK, and what challenges does the openvdb solve for computational engineering?

And I found GLFW, to be a frontend for Windows and Mac, not sure if this conclusion is true or not, Thanks for such a wonderful package

[LinKayser]

PicoGK uses OpenVDB as geometry engine (Voxels, etc.). And it uses GLFW to show a user interface (the viewer).
Lin