3DLDF – Three-di­men­sional draw­ing with Me­ta­post out­put

3DLDF is a pack­age for three-di­men­sional draw­ing with Meta­Post out­put. It cur­rently does not pos­sess an in­put rou­tine, so that user code must be writ­ten in C++, com­piled, and linked with the rest of the pro­gram. 3DLDF is in­tended, among other things, to pro­vide a fairly con­ve­nient way of mak­ing 3D draw­ings that can be in­cluded in TeX doc­u­ments.