llbbox.h
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- /**
- * @file llbbox.h
- * @brief General purpose bounding box class
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_BBOX_H
- #define LL_BBOX_H
- #include "v3math.h"
- #include "llquaternion.h"
- // Note: "local space" for an LLBBox is defined relative to agent space in terms of
- // a translation followed by a rotation. There is no scale term since the LLBBox's min and
- // max are not necessarily symetrical and define their own extents.
- class LLBBox
- {
- public:
- LLBBox() {mEmpty = TRUE;}
- LLBBox( const LLVector3& pos_agent,
- const LLQuaternion& rot,
- const LLVector3& min_local,
- const LLVector3& max_local )
- :
- mMinLocal( min_local ), mMaxLocal( max_local ), mPosAgent(pos_agent), mRotation( rot), mEmpty( TRUE )
- {}
- // Default copy constructor is OK.
- const LLVector3& getPositionAgent() const { return mPosAgent; }
- const LLQuaternion& getRotation() const { return mRotation; }
- const LLVector3& getMinLocal() const { return mMinLocal; }
- void setMinLocal( const LLVector3& min ) { mMinLocal = min; }
- const LLVector3& getMaxLocal() const { return mMaxLocal; }
- void setMaxLocal( const LLVector3& max ) { mMaxLocal = max; }
- LLVector3 getCenterLocal() const { return (mMaxLocal - mMinLocal) * 0.5f + mMinLocal; }
- LLVector3 getCenterAgent() const { return localToAgent( getCenterLocal() ); }
- LLVector3 getExtentLocal() const { return mMaxLocal - mMinLocal; }
- BOOL containsPointLocal(const LLVector3& p) const;
- BOOL containsPointAgent(const LLVector3& p) const;
- void addPointAgent(LLVector3 p);
- void addBBoxAgent(const LLBBox& b);
-
- void addPointLocal(const LLVector3& p);
- void addBBoxLocal(const LLBBox& b) { addPointLocal( b.mMinLocal ); addPointLocal( b.mMaxLocal ); }
- void expand( F32 delta );
- LLVector3 localToAgent( const LLVector3& v ) const;
- LLVector3 agentToLocal( const LLVector3& v ) const;
- // Changes rotation but not position
- LLVector3 localToAgentBasis(const LLVector3& v) const;
- LLVector3 agentToLocalBasis(const LLVector3& v) const;
- // friend LLBBox operator*(const LLBBox& a, const LLMatrix4& b);
- private:
- LLVector3 mMinLocal;
- LLVector3 mMaxLocal;
- LLVector3 mPosAgent; // Position relative to Agent's Region
- LLQuaternion mRotation;
- BOOL mEmpty; // Nothing has been added to this bbox yet
- };
- //LLBBox operator*(const LLBBox &a, const LLMatrix4 &b);
- #endif // LL_BBOX_H