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c71d7f52dc
The code originally did a 2D AABB, which has several negative effects. Its cheaper to calculate on load however the NavMesh results are less accurate as the boxes won't be subdivided on the Z axis during the build process. The second issue is that the raycast will query all overlapping triangles in a rectangle on a XY plane, for a detailed mesh, this could mean having to test over 1000 triangles for a simple ray cast accorss the geometry. A sample that collected 1000 triangles to test has been reduces to just 3 with this change. The build times have also been reduced by 50% (Kings Canyon NavMesh now builds in 32 minutes rather than 60+ minutes).