It seems that when exporting an STL file from a 3D mesh editing program and then using tetgen for tetrahedralization, there is an issue where the tetrahedralization occurs not at the aligned point but rather at the origin (0,0,0). If there is a way to perform tetrahedralization without aligning to the origin, please provide guidance, such as tetgen option...
I am using Tetgen for tetrahedralization with the "-p" option. After using Tetgen to tetrahedralize my .stl mesh, origin of tetrahedralized mesh file(.ele, *.node) is aligned to center.