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Physical simulations have become more popular and widespread throughout computer graphics. In particular, we are interested in studying interactive deformation and fracture simulations. However, we discovered that preparing interesting yet appropriate models for these types of simulations is very challenging.

Today I'm going to present our technique for the simplification and improvement of tetrahedral meshes for simulation. This algorithm was used to create the models presented in my PhD dissertation.

VIDEO: avi (~4MB)

Here's a short video showing an interactive deformation simulation performed on a dog head model. The model is composed of two different materials, an rigid inner bone core, with a deformable skin layer on top. As the user shakes the bone core, the skin reacts.

Similarly, the bone core head of this bunny model can be rotated. The model and deformation algorithm can handle extreme deformations. The simulation was developed by Matthias Mueller in previous work.

Both models were created from 3D scanned meshes.