Topological structure extraction for computing surface–surface intersection curves

Surface–surface intersection curve computation is a fundamental problem in CAD and solid modeling. Extracting the structure of intersection curves accurately, especially when there are multiple overlapping curves, is a key challenge. Existing methods rely on densely sampled intersection points and proximity-based connections, which are time-consuming to obtain. In this paper, we propose a novel method based on Delaunay triangulation to accurately extract intersection curves, even with sparse intersection points. We also introduce an intersection curve optimization technique to enhance curve accuracy. Extensive experiments on various examples demonstrate the effectiveness of our method.