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/**
* @file llbbox.cpp
* @brief General purpose bounding box class (Not axis aligned)
*
* Copyright (c) 2001-2007, 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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.
*/
#include "llviewerprecompiledheaders.h"
// self include
#include "llbbox.h"
// library includes
#include "m4math.h"
void LLBBox::addPointLocal(const LLVector3& p)
{
if (mEmpty)
{
mMinLocal = p;
mMaxLocal = p;
mEmpty = FALSE;
}
else
{
mMinLocal.mV[VX] = llmin( p.mV[VX], mMinLocal.mV[VX] );
mMinLocal.mV[VY] = llmin( p.mV[VY], mMinLocal.mV[VY] );
mMinLocal.mV[VZ] = llmin( p.mV[VZ], mMinLocal.mV[VZ] );
mMaxLocal.mV[VX] = llmax( p.mV[VX], mMaxLocal.mV[VX] );
mMaxLocal.mV[VY] = llmax( p.mV[VY], mMaxLocal.mV[VY] );
mMaxLocal.mV[VZ] = llmax( p.mV[VZ], mMaxLocal.mV[VZ] );
}
}
void LLBBox::addPointAgent( LLVector3 p)
{
p -= mPosAgent;
p.rotVec( ~mRotation );
addPointLocal( p );
}
void LLBBox::addBBoxAgent(const LLBBox& b)
{
if (mEmpty)
{
mPosAgent = b.mPosAgent;
mRotation = b.mRotation;
mMinLocal.clearVec();
mMaxLocal.clearVec();
}
LLVector3 vertex[8];
vertex[0].setVec( b.mMinLocal.mV[VX], b.mMinLocal.mV[VY], b.mMinLocal.mV[VZ] );
vertex[1].setVec( b.mMinLocal.mV[VX], b.mMinLocal.mV[VY], b.mMaxLocal.mV[VZ] );
vertex[2].setVec( b.mMinLocal.mV[VX], b.mMaxLocal.mV[VY], b.mMinLocal.mV[VZ] );
vertex[3].setVec( b.mMinLocal.mV[VX], b.mMaxLocal.mV[VY], b.mMaxLocal.mV[VZ] );
vertex[4].setVec( b.mMaxLocal.mV[VX], b.mMinLocal.mV[VY], b.mMinLocal.mV[VZ] );
vertex[5].setVec( b.mMaxLocal.mV[VX], b.mMinLocal.mV[VY], b.mMaxLocal.mV[VZ] );
vertex[6].setVec( b.mMaxLocal.mV[VX], b.mMaxLocal.mV[VY], b.mMinLocal.mV[VZ] );
vertex[7].setVec( b.mMaxLocal.mV[VX], b.mMaxLocal.mV[VY], b.mMaxLocal.mV[VZ] );
LLMatrix4 m( b.mRotation );
m.translate( b.mPosAgent );
m.translate( -mPosAgent );
m.rotate( ~mRotation );
for( S32 i=0; i<8; i++ )
{
addPointLocal( vertex[i] * m );
}
}
void LLBBox::expand( F32 delta )
{
mMinLocal.mV[VX] -= delta;
mMinLocal.mV[VY] -= delta;
mMinLocal.mV[VZ] -= delta;
mMaxLocal.mV[VX] += delta;
mMaxLocal.mV[VY] += delta;
mMaxLocal.mV[VZ] += delta;
}
LLVector3 LLBBox::localToAgent(const LLVector3& v) const
{
LLMatrix4 m( mRotation );
m.translate( mPosAgent );
return v * m;
}
LLVector3 LLBBox::agentToLocal(const LLVector3& v) const
{
LLMatrix4 m;
m.translate( -mPosAgent );
m.rotate( ~mRotation ); // inverse rotation
return v * m;
}
LLVector3 LLBBox::localToAgentBasis(const LLVector3& v) const
{
LLMatrix4 m( mRotation );
return v * m;
}
LLVector3 LLBBox::agentToLocalBasis(const LLVector3& v) const
{
LLMatrix4 m( ~mRotation ); // inverse rotation
return v * m;
}
BOOL LLBBox::containsPointLocal(const LLVector3& p) const
{
if ( (p.mV[VX] < mMinLocal.mV[VX])
||(p.mV[VX] > mMaxLocal.mV[VX])
||(p.mV[VY] < mMinLocal.mV[VY])
||(p.mV[VY] > mMaxLocal.mV[VY])
||(p.mV[VZ] < mMinLocal.mV[VZ])
||(p.mV[VZ] > mMaxLocal.mV[VZ]))
{
return FALSE;
}
return TRUE;
}
BOOL LLBBox::containsPointAgent(const LLVector3& p) const
{
LLVector3 point_local = agentToLocal(p);
return containsPointLocal(point_local);
}
/*
LLBBox operator*(const LLBBox &a, const LLMatrix4 &b)
{
return LLBBox( a.mMin * b, a.mMax * b );
}
*/
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