bounding box Last edited 5 months ago2024-06-19 13:42:14 UTC

The axis-aligned bounding box (or just bounding box) of a brush entity is the cuboid that fits the entire brushwork of the entity (excluding User posted image origin and User posted image clip brushes).

In general, it is used by the game engine to determine if the entity should be rendered, by seeing if the entity's bounding box is within any of the visible areas (leafs) of the map.

Some entities that make use of their bounding box property include:
User posted image
The BOUNDINGBOX tool texture allows you to set a custom bounding box for an entity. Some neat use cases:

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