attcs

If the geometry is static, node-wise containment unnecessary, entity ID-s could be stored directly in the tree. With this change, * a lot of small vector allocations could be spared...

Nodes' bounding boxes could be omitted in some use cases, and/or in-place calculated. Removing bounding boxes could * highly reduce the memory footprint * _slightly_ (speculative) increase CPU usage at...

Do not insert an entity if it is colliding with another one.

Cube/Spherical tolerance collision check for the point solution.