407 lines
10 KiB
C
407 lines
10 KiB
C
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/*
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-----------------------------------------------------------------------------
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This source file is part of OGRE
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(Object-oriented Graphics Rendering Engine)
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For the latest info, see http://www.ogre3d.org/
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Copyright (c) 2000-2009 Torus Knot Software Ltd
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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-----------------------------------------------------------------------------
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*/
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#ifndef __Vector4_H__
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#define __Vector4_H__
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#include "OgrePrerequisites.h"
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#include "OgreVector3.h"
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namespace Ogre
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{
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/** \addtogroup Core
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* @{
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*/
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/** \addtogroup Math
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* @{
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*/
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/** 4-dimensional homogeneous vector.
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*/
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class Vector4
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{
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public:
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Real x, y, z, w;
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public:
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inline Vector4()
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{
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}
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inline Vector4( const Real fX, const Real fY, const Real fZ, const Real fW )
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: x( fX ), y( fY ), z( fZ ), w( fW)
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{
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}
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inline explicit Vector4( const Real afCoordinate[4] )
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: x( afCoordinate[0] ),
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y( afCoordinate[1] ),
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z( afCoordinate[2] ),
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w( afCoordinate[3] )
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{
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}
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inline explicit Vector4( const int afCoordinate[4] )
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{
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x = (Real)afCoordinate[0];
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y = (Real)afCoordinate[1];
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z = (Real)afCoordinate[2];
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w = (Real)afCoordinate[3];
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}
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inline explicit Vector4( Real* const r )
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: x( r[0] ), y( r[1] ), z( r[2] ), w( r[3] )
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{
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}
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inline explicit Vector4( const Real scaler )
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: x( scaler )
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, y( scaler )
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, z( scaler )
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, w( scaler )
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{
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}
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inline explicit Vector4(const Vector3& rhs)
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: x(rhs.x), y(rhs.y), z(rhs.z), w(1.0f)
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{
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}
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/** Exchange the contents of this vector with another.
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*/
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inline void swap(Vector4& other)
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{
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std::swap(x, other.x);
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std::swap(y, other.y);
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std::swap(z, other.z);
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std::swap(w, other.w);
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}
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inline Real operator [] ( const size_t i ) const
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{
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assert( i < 4 );
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return *(&x+i);
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}
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inline Real& operator [] ( const size_t i )
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{
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assert( i < 4 );
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return *(&x+i);
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}
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/// Pointer accessor for direct copying
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inline Real* ptr()
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{
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return &x;
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}
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/// Pointer accessor for direct copying
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inline const Real* ptr() const
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{
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return &x;
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}
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/** Assigns the value of the other vector.
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@param
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rkVector The other vector
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*/
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inline Vector4& operator = ( const Vector4& rkVector )
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{
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x = rkVector.x;
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y = rkVector.y;
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z = rkVector.z;
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w = rkVector.w;
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return *this;
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}
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inline Vector4& operator = ( const Real fScalar)
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{
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x = fScalar;
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y = fScalar;
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z = fScalar;
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w = fScalar;
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return *this;
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}
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inline bool operator == ( const Vector4& rkVector ) const
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{
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return ( x == rkVector.x &&
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y == rkVector.y &&
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z == rkVector.z &&
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w == rkVector.w );
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}
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inline bool operator != ( const Vector4& rkVector ) const
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{
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return ( x != rkVector.x ||
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y != rkVector.y ||
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z != rkVector.z ||
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w != rkVector.w );
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}
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inline Vector4& operator = (const Vector3& rhs)
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{
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x = rhs.x;
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y = rhs.y;
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z = rhs.z;
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w = 1.0f;
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return *this;
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}
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// arithmetic operations
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inline Vector4 operator + ( const Vector4& rkVector ) const
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{
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return Vector4(
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x + rkVector.x,
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y + rkVector.y,
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z + rkVector.z,
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w + rkVector.w);
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}
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inline Vector4 operator - ( const Vector4& rkVector ) const
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{
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return Vector4(
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x - rkVector.x,
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y - rkVector.y,
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z - rkVector.z,
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w - rkVector.w);
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}
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inline Vector4 operator * ( const Real fScalar ) const
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{
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return Vector4(
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x * fScalar,
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y * fScalar,
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z * fScalar,
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w * fScalar);
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}
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inline Vector4 operator * ( const Vector4& rhs) const
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{
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return Vector4(
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rhs.x * x,
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rhs.y * y,
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rhs.z * z,
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rhs.w * w);
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}
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inline Vector4 operator / ( const Real fScalar ) const
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{
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assert( fScalar != 0.0 );
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Real fInv = 1.0f / fScalar;
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return Vector4(
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x * fInv,
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y * fInv,
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z * fInv,
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w * fInv);
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}
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inline Vector4 operator / ( const Vector4& rhs) const
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{
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return Vector4(
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x / rhs.x,
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y / rhs.y,
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z / rhs.z,
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w / rhs.w);
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}
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inline const Vector4& operator + () const
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{
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return *this;
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}
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inline Vector4 operator - () const
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{
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return Vector4(-x, -y, -z, -w);
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}
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inline friend Vector4 operator * ( const Real fScalar, const Vector4& rkVector )
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{
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return Vector4(
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fScalar * rkVector.x,
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fScalar * rkVector.y,
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fScalar * rkVector.z,
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fScalar * rkVector.w);
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}
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inline friend Vector4 operator / ( const Real fScalar, const Vector4& rkVector )
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{
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return Vector4(
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fScalar / rkVector.x,
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fScalar / rkVector.y,
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fScalar / rkVector.z,
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fScalar / rkVector.w);
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}
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inline friend Vector4 operator + (const Vector4& lhs, const Real rhs)
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{
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return Vector4(
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lhs.x + rhs,
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lhs.y + rhs,
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lhs.z + rhs,
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lhs.w + rhs);
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}
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inline friend Vector4 operator + (const Real lhs, const Vector4& rhs)
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{
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return Vector4(
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lhs + rhs.x,
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lhs + rhs.y,
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lhs + rhs.z,
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lhs + rhs.w);
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}
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inline friend Vector4 operator - (const Vector4& lhs, Real rhs)
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{
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return Vector4(
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lhs.x - rhs,
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lhs.y - rhs,
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lhs.z - rhs,
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lhs.w - rhs);
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}
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inline friend Vector4 operator - (const Real lhs, const Vector4& rhs)
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{
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return Vector4(
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lhs - rhs.x,
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lhs - rhs.y,
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lhs - rhs.z,
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lhs - rhs.w);
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}
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// arithmetic updates
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inline Vector4& operator += ( const Vector4& rkVector )
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{
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x += rkVector.x;
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y += rkVector.y;
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z += rkVector.z;
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w += rkVector.w;
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return *this;
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}
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inline Vector4& operator -= ( const Vector4& rkVector )
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{
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x -= rkVector.x;
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y -= rkVector.y;
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z -= rkVector.z;
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w -= rkVector.w;
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return *this;
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}
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inline Vector4& operator *= ( const Real fScalar )
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{
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x *= fScalar;
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y *= fScalar;
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z *= fScalar;
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w *= fScalar;
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return *this;
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}
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inline Vector4& operator += ( const Real fScalar )
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{
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x += fScalar;
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y += fScalar;
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z += fScalar;
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w += fScalar;
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return *this;
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}
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inline Vector4& operator -= ( const Real fScalar )
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{
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x -= fScalar;
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y -= fScalar;
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z -= fScalar;
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w -= fScalar;
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return *this;
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}
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inline Vector4& operator *= ( const Vector4& rkVector )
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{
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x *= rkVector.x;
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y *= rkVector.y;
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z *= rkVector.z;
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w *= rkVector.w;
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return *this;
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}
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inline Vector4& operator /= ( const Real fScalar )
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{
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assert( fScalar != 0.0 );
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Real fInv = 1.0f / fScalar;
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x *= fInv;
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y *= fInv;
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z *= fInv;
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w *= fInv;
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return *this;
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}
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inline Vector4& operator /= ( const Vector4& rkVector )
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{
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x /= rkVector.x;
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y /= rkVector.y;
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z /= rkVector.z;
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w /= rkVector.w;
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return *this;
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}
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/** Calculates the dot (scalar) product of this vector with another.
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@param
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vec Vector with which to calculate the dot product (together
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with this one).
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@returns
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A float representing the dot product value.
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*/
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inline Real dotProduct(const Vector4& vec) const
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{
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return x * vec.x + y * vec.y + z * vec.z + w * vec.w;
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}
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/// Check whether this vector contains valid values
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inline bool isNaN() const
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{
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return Math::isNaN(x) || Math::isNaN(y) || Math::isNaN(z) || Math::isNaN(w);
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}
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// special
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static const Vector4 ZERO;
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};
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/** @} */
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/** @} */
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}
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#endif
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