GetAbsOrigin(): Difference between revisions
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Note:These alternatives are all significantly slower than
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'''<code>GetAbsOrigin()</code>''' returns the world co-ordinates of the [[origin]] of any [[point]] or [[model]] entity as a [[vector]]. This is ''theoretically'' the centre of the object, but for NPCs (to choose a prominent example) will be a point exactly half way between the soles of their feet when in the [[reference posture]], or wherever else the modeller has placed it. | '''<code>GetAbsOrigin()</code>''' returns the world co-ordinates of the [[origin]] of any [[point]] or [[model]] entity as a [[vector]]. This is ''theoretically'' the centre of the object, but for NPCs (to choose a prominent example) it will be a point exactly half way between the soles of their feet when in the [[reference posture]], or wherever else the modeller has placed it. | ||
== Alternatives == | == Alternatives == | ||
You may want to use a different method of finding an entity's location, particularly given the fact that <code>GetAbsOrigin()</code> will not work with [[brush]]es unless they are tied to an [[entity]] that creates one for them - which may well not mark the location of the object in any useful way! | You may want to use a different method of finding an entity's location, particularly given the fact that <code>GetAbsOrigin()</code> will not work with [[brush]]es unless they are tied to an [[entity]] that creates one for them - which may well not mark the location of the object in any useful way! | ||
{{note|These alternatives are all significantly slower than <code>GetAbsOrigin()</code>.}} | |||
{{todo|How many of these OBB functions work with vphysics?}} | {{todo|How many of these OBB functions work with vphysics?}} | ||
Revision as of 14:38, 2 June 2008
GetAbsOrigin() returns the world co-ordinates of the origin of any point or model entity as a vector. This is theoretically the centre of the object, but for NPCs (to choose a prominent example) it will be a point exactly half way between the soles of their feet when in the reference posture, or wherever else the modeller has placed it.
Alternatives
You may want to use a different method of finding an entity's location, particularly given the fact that GetAbsOrigin() will not work with brushes unless they are tied to an entity that creates one for them - which may well not mark the location of the object in any useful way!
Note:These alternatives are all significantly slower than GetAbsOrigin().Todo: How many of these OBB functions work with vphysics?
WorldSpaceCenter()- Returns the centre of an entity's object-aligned bounding box as a vector.
CollisionProp()->CalcNearestPoint( const Vector &vecWorldPt, Vector *pVecNearestWorldPt )- Calculates the nearest point to
vecWorldPtof an entity's object-aligned bounding box. - Note:Instead of returning a value, this function will modify whatever variable is passed for
pVecNearestWorldPt.
Todo: More...