A basic tool built using C++ and VTK for visualizing both Principal Curvatures and the Gaussian Curvature of parametric meshes (cylinder, cone, ellipsoid and torus)
Use 1 - 4 keys for changing the solids: 1) Cylinder, 2) Cone, 3) Ellipsoid, 4) Torus
After pressing the key then click on the window for applying the change (it is a silly bug).
The program requires VTK. Please download it, compile and install before running this program.