Improvement of drape simulation speed using constrained fabric collision

Garment is generally a 3D object made of 2D fabric. So, it is necessary to predict the garment drape shape when designing fabric patterns. There are several methods to simulate fabric drape, but the calculation times are long for practical use. The bottleneck of the drape simulation is the collision detection between fabric and human body and self contact detection of the fabric itself. We assumed that the fabric collision occurs only locally to reduce the number of possible collisions. We made the fabric patterns into finite elements and each element was given a local area number so that only elements within certain area can contact with other ones.