Using Tk-inter to draw a Cube and hiding the face if it is not visible calculating the normal of the face. .

vtk tcl/tk 3d rendering using the data from vtk data

PLplot is a library of C functions that are useful for making scientific plots programs written in C, C++, Fortran77, Fortran95, Java, Octave, Perl, Python, and Tcl/Tk. The PLplot project is being developed by a world-wide team who interact via t