I am currently trying to look into techniques that allow the calculation of arbitrary cross-sections of a 3D object or rendered volume. However, I have been unable to find much on the topic. I know of some software packages, such as the SolidWorks CAD package, that employ such techniques; as seen here:
Does anyone know of any available methods, techniques, algorithms, or tutorials that aim to achieve this result? Also, in terms of the theory of this technique and the concept of calculating it on the fly; how performant is such a technique likely to be?