GetAbsOrigin()

GetAbsOrigin() returns the absolute (i.e. world-relative) origin of an entity as a vector. Its sister function SetAbsOrigin() changes it.

The origin is actually stored in local space (i.e parent-relative), meaning that the Abs functions perform a conversion before returning. If you can, use the more direct GetLocalOrigin() and SetLocalOrigin() instead.

Alternatives

A different approach for finding an origin can be useful, particularly when dealing with a brush entity which might not have one stored. Bear in mind that these alternatives are all significantly slower than plain GetAbsOrigin()!

Vector WorldSpaceCenter()

Returns the centre of an entity's object-aligned bounding box.

void CollisionProp()->CalcNearestPoint(&vecWorldPt,*pVecNearestWorldPt)

Finds the nearest point on the entity's OBB to vecWorldPt. Modifies pVecNearestWorldPt with the result.

Todo: Do these OBB functions work with vphysics?