Navigation Meshes for Realistic Multi-Layered

Environments

Wouter G. van Toll, Atlas F. Cook IV, Roland GeraertsUtrecht University, The Netherlands

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

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!

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