Collision Handling for Interactive Garment Simulation

This paper deals with real-time interactive garment simulation, and focuses specifically on collision handling between a character and garments. Because simulation speed must be kept over a certain limit in interactive garment simulation, regardless of the speed or type of a character’s motion, a rapid and stable collision handling method is required. For this reason, we approximate the shape of the character model with quadric bounding volumes and handle collisions using an adaptive approach to motion speed. In the adaptive approach, the quadric implicit function is used in slow movement and a simplified dynamic collision detection method devised in this paper is used in fast movement. Using our simplified method is about 10 times faster than only using static collision handling method. We also propose relative garment simulation method that computes the garment’s deformation relative to the character’s translation for the stable collision handling in fast translation of the character. Experimental results demonstrate that our collision handling method work stable even though the character moves several steps or the limbs (arms and legs) of the character move largely in two successive frames.