I need to visualize the contact areas between multiple .stl files

[jaswantp (Jaswant Panchumarti (Kitware))]

If you’re using vtk.wasm, you can try vtkCollisionDetectionFilter

Live example: https://vtk.org/files/examples/CollisionDetection/index.html
Code: https://examples.vtk.org/site/Cxx/Visualization/CollisionDetection/#code