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/**
* @file llmatrix3a.inl
* @brief LLMatrix3a inline definitions
*
* $LicenseInfo:firstyear=2010&license=viewergpl$
*
* Copyright (c) 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.
* $/LicenseInfo$
*/
#include "llmatrix3a.h"
#include "m3math.h"
inline LLMatrix3a::LLMatrix3a( const LLVector4a& c0, const LLVector4a& c1, const LLVector4a& c2 )
{
setColumns( c0, c1, c2 );
}
inline void LLMatrix3a::loadu(const LLMatrix3& src)
{
mColumns[0].load3(src.mMatrix[0]);
mColumns[1].load3(src.mMatrix[1]);
mColumns[2].load3(src.mMatrix[2]);
}
inline void LLMatrix3a::setRows(const LLVector4a& r0, const LLVector4a& r1, const LLVector4a& r2)
{
mColumns[0] = r0;
mColumns[1] = r1;
mColumns[2] = r2;
setTranspose( *this );
}
inline void LLMatrix3a::setColumns(const LLVector4a& c0, const LLVector4a& c1, const LLVector4a& c2)
{
mColumns[0] = c0;
mColumns[1] = c1;
mColumns[2] = c2;
}
inline void LLMatrix3a::setTranspose(const LLMatrix3a& src)
{
const LLQuad srcCol0 = src.mColumns[0];
const LLQuad srcCol1 = src.mColumns[1];
const LLQuad unpacklo = _mm_unpacklo_ps( srcCol0, srcCol1 );
mColumns[0] = _mm_movelh_ps( unpacklo, src.mColumns[2] );
mColumns[1] = _mm_shuffle_ps( _mm_movehl_ps( srcCol0, unpacklo ), src.mColumns[2], _MM_SHUFFLE(0, 1, 1, 0) );
mColumns[2] = _mm_shuffle_ps( _mm_unpackhi_ps( srcCol0, srcCol1 ), src.mColumns[2], _MM_SHUFFLE(0, 2, 1, 0) );
}
inline const LLVector4a& LLMatrix3a::getColumn(const U32 column) const
{
llassert( column < 3 );
return mColumns[column];
}
inline void LLMatrix3a::setLerp(const LLMatrix3a& a, const LLMatrix3a& b, F32 w)
{
mColumns[0].setLerp( a.mColumns[0], b.mColumns[0], w );
mColumns[1].setLerp( a.mColumns[1], b.mColumns[1], w );
mColumns[2].setLerp( a.mColumns[2], b.mColumns[2], w );
}
inline LLBool32 LLMatrix3a::isFinite() const
{
return mColumns[0].isFinite3() && mColumns[1].isFinite3() && mColumns[2].isFinite3();
}
inline void LLMatrix3a::getDeterminant( LLVector4a& dest ) const
{
LLVector4a col1xcol2; col1xcol2.setCross3( mColumns[1], mColumns[2] );
dest.setAllDot3( col1xcol2, mColumns[0] );
}
inline LLSimdScalar LLMatrix3a::getDeterminant() const
{
LLVector4a col1xcol2; col1xcol2.setCross3( mColumns[1], mColumns[2] );
return col1xcol2.dot3( mColumns[0] );
}
inline bool LLMatrix3a::isApproximatelyEqual( const LLMatrix3a& rhs, F32 tolerance /*= F_APPROXIMATELY_ZERO*/ ) const
{
return rhs.getColumn(0).equals3(mColumns[0], tolerance)
&& rhs.getColumn(1).equals3(mColumns[1], tolerance)
&& rhs.getColumn(2).equals3(mColumns[2], tolerance);
}
inline const LLMatrix3a& LLMatrix3a::getIdentity()
{
extern const LLMatrix3a LL_M3A_IDENTITY;
return LL_M3A_IDENTITY;
}
inline bool LLRotation::isOkRotation() const
{
LLMatrix3a transpose; transpose.setTranspose( *this );
LLMatrix3a product; product.setMul( *this, transpose );
LLSimdScalar detMinusOne = getDeterminant() - 1.f;
return product.isApproximatelyEqual( LLMatrix3a::getIdentity() ) && (detMinusOne.getAbs() < F_APPROXIMATELY_ZERO);
}
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