Hello, I see this discussion happened in 2014. Are the plugins still only post-process? I am working on a specialized printing software that will run on a 6 axis robotic arm and need to get directly to the surface normals (to help guide the robotic arm orientation). I also need to have access to the slicing plane orientation so I can print slices at multiple orientations. If the capabilities to make a plugin that can do this exist, can someone please guide me to the internal data-structures and documentation that can get me on the right path? Thank you!