Voxelise a closed (ie. watertight) triangular-polygon mesh. The mesh can be in one of several formats: in an STL file in a structure containing the faces and vertices data in three 3xN arrays containing the x,y,z coordinates or in a single Nx3x3 array defining the vertex coordinates for each of the N facets.-Voxelise a closed (ie. watertight) triangular-polygon mesh.　The mesh can be in one of several formats:　in an STL file　 in a structure containing the faces and vertices data　 in three 3xN arrays containing the x,y,z coordinates　 or in a single Nx3x3 array defining the vertex coordinates for each of the N facets.