/indra/llmath/llbbox.h
https://bitbucket.org/lindenlab/viewer-beta/ · C++ Header · 101 lines · 46 code · 22 blank · 33 comment · 0 complexity · 11e0965d6f4c128dd7d94097a771d2a6 MD5 · raw file
- /**
- * @file llbbox.h
- * @brief General purpose bounding box class
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #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; }
- LLVector3 getMinAgent() const;
- const LLVector3& getMinLocal() const { return mMinLocal; }
- void setMinLocal( const LLVector3& min ) { mMinLocal = min; }
- LLVector3 getMaxAgent() const;
- 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;
- // Get the smallest possible axis aligned bbox that contains this bbox
- LLBBox getAxisAligned() 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