Stylized Vector Art from 3D Models with Region Support

We describe a rendering system that converts a 3D meshed model into the stylized 2D filled‐region vector‐art commonly found in clip‐art libraries. To properly define filled regions, we analyze and combine accurate but jagged face‐normal contours with smooth but inaccurate interpolated vertex normal contours, and construct a new smooth shadow contour that properly surrounds the actual jagged shadow contour. We decompose region definition into geometric and topological components, using machine precision for geometry processing and raster‐precision to accelerate topological queries. We extend programmable stylization to simplify, smooth and stylize filled regions. The result renders 10K‐face meshes into custom clip‐art in seconds.