1. Navigation Meshes for Realistic Multi-Layered Environments Wouter G. van Toll, Atlas F. Cook IV, Roland Geraerts Utrecht University, The Netherlands

2. Multi-layered: Why?  A navigation mesh for path planning and crowd simulation  Existing automatic+exact navigation meshes only work in 2D  Many realistic environments consist of multiple connected layers  We need a multi-layered navigation mesh

3. Our navigation mesh  We build the medial axis of a multi-layered environment, incrementally –Build the medial axis of each 2D layer –Merge the medial axes around the connections –Construction is fast and automatic!

4. Our navigation mesh  We add closest-point annotations –The multi-layered Explicit Corridor Map (ECM) –Efficient routing –Flexible real-time steering –Short/smooth paths with clearance –…–…  See you tomorrow! –Interactive session ThAPT10 –08:00 – 09:30, Golden Gate Room