error of 3D-coordinates seems fixed
error of 3D-coordinates seems fixed

git-svn-id: 6fd85abfa91449a47dbbdf224cd923194cc24faf@106 dcddef73-2b9d-49fe-a651-d05a6fa2f102

3dptv/3dptv,alexlib/3dptv_tcltk,alexlib/3dptv_tcltk,3dptv/3dptv