0

In OpenVDB C++ repository, there is this condition inside VolumeToMesh.h:
if (ijk[0] > origin[0] && ijk[1] > origin[1] && ijk[2] > origin[2]) {
constructPolygons(invertSurfaceOrientation,
flags, refFlags, offsets, ijk, *signleafPt, *idxLeafPt, mesher); // 1st function: implementation ...