[1092] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://www.ogre3d.org/
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| 6 |
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| 7 | Copyright (c) 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 | #ifndef __Vector4_H__
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| 26 | #define __Vector4_H__
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| 27 |
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| 28 | #include "OgrePrerequisites.h"
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| 29 | #include "OgreVector3.h"
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| 30 |
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| 31 | namespace Ogre
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| 32 | {
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| 33 |
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| 34 | /** 4-dimensional homogenous vector.
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| 35 | */
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| 36 | class _OgreExport Vector4
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| 37 | {
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| 38 | public:
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| 39 | union {
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| 40 | struct {
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| 41 | Real x, y, z, w;
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| 42 | };
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| 43 | Real val[4];
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| 44 | };
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| 45 |
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| 46 | public:
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| 47 | inline Vector4()
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| 48 | {
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| 49 | }
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| 50 |
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| 51 | inline Vector4( Real fX, Real fY, Real fZ, Real fW )
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| 52 | : x( fX ), y( fY ), z( fZ ), w( fW)
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| 53 | {
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| 54 | }
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| 55 |
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| 56 | inline Vector4( Real afCoordinate[4] )
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| 57 | : x( afCoordinate[0] ),
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| 58 | y( afCoordinate[1] ),
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| 59 | z( afCoordinate[2] ),
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| 60 | w (afCoordinate[3] )
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| 61 | {
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| 62 | }
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| 63 |
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| 64 | inline Vector4( int afCoordinate[4] )
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| 65 | {
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| 66 | x = (Real)afCoordinate[0];
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| 67 | y = (Real)afCoordinate[1];
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| 68 | z = (Real)afCoordinate[2];
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| 69 | w = (Real)afCoordinate[3];
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| 70 | }
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| 71 |
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| 72 | inline Vector4( const Real* const r )
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| 73 | : x( r[0] ), y( r[1] ), z( r[2] ), w( r[3] )
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| 74 | {
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| 75 | }
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| 76 |
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| 77 | inline Vector4( const Vector4& rkVector )
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| 78 | : x( rkVector.x ), y( rkVector.y ), z( rkVector.z ), w (rkVector.w)
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| 79 | {
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| 80 | }
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| 81 |
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| 82 | inline Real operator [] ( size_t i ) const
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| 83 | {
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| 84 | assert( i < 4 );
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| 85 |
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| 86 | return *(&x+i);
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| 87 | }
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| 88 |
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| 89 | inline Real& operator [] ( size_t i )
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| 90 | {
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| 91 | assert( i < 4 );
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| 92 |
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| 93 | return *(&x+i);
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| 94 | }
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| 95 |
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| 96 | /** Assigns the value of the other vector.
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| 97 | @param
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| 98 | rkVector The other vector
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| 99 | */
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| 100 | inline Vector4& operator = ( const Vector4& rkVector )
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| 101 | {
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| 102 | x = rkVector.x;
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| 103 | y = rkVector.y;
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| 104 | z = rkVector.z;
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| 105 | w = rkVector.w;
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| 106 |
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| 107 | return *this;
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| 108 | }
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| 109 |
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| 110 | inline bool operator == ( const Vector4& rkVector ) const
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| 111 | {
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| 112 | return ( x == rkVector.x &&
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| 113 | y == rkVector.y &&
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| 114 | z == rkVector.z &&
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| 115 | w == rkVector.w );
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| 116 | }
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| 117 |
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| 118 | inline bool operator != ( const Vector4& rkVector ) const
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| 119 | {
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| 120 | return ( x != rkVector.x ||
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| 121 | y != rkVector.y ||
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| 122 | z != rkVector.z ||
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| 123 | w != rkVector.w );
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| 124 | }
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| 125 |
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| 126 | inline Vector4& operator = (const Vector3& rhs)
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| 127 | {
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| 128 | x = rhs.x;
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| 129 | y = rhs.y;
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| 130 | z = rhs.z;
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| 131 | w = 1.0f;
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| 132 | return *this;
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| 133 | }
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| 134 |
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| 135 | // arithmetic operations
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| 136 | inline Vector4 operator + ( const Vector4& rkVector ) const
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| 137 | {
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| 138 | Vector4 kSum;
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| 139 |
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| 140 | kSum.x = x + rkVector.x;
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| 141 | kSum.y = y + rkVector.y;
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| 142 | kSum.z = z + rkVector.z;
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| 143 | kSum.w = w + rkVector.w;
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| 144 |
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| 145 | return kSum;
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| 146 | }
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| 147 |
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| 148 | inline Vector4 operator - ( const Vector4& rkVector ) const
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| 149 | {
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| 150 | Vector4 kDiff;
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| 151 |
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| 152 | kDiff.x = x - rkVector.x;
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| 153 | kDiff.y = y - rkVector.y;
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| 154 | kDiff.z = z - rkVector.z;
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| 155 | kDiff.w = w - rkVector.w;
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| 156 |
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| 157 | return kDiff;
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| 158 | }
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| 159 |
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| 160 | inline Vector4 operator * ( Real fScalar ) const
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| 161 | {
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| 162 | Vector4 kProd;
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| 163 |
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| 164 | kProd.x = fScalar*x;
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| 165 | kProd.y = fScalar*y;
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| 166 | kProd.z = fScalar*z;
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| 167 | kProd.w = fScalar*w;
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| 168 |
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| 169 | return kProd;
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| 170 | }
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| 171 |
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| 172 | inline Vector4 operator * ( const Vector4& rhs) const
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| 173 | {
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| 174 | Vector4 kProd;
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| 175 |
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| 176 | kProd.x = rhs.x * x;
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| 177 | kProd.y = rhs.y * y;
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| 178 | kProd.z = rhs.z * z;
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| 179 | kProd.w = rhs.w * w;
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| 180 |
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| 181 | return kProd;
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| 182 | }
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| 183 |
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| 184 | inline Vector4 operator / ( Real fScalar ) const
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| 185 | {
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| 186 | assert( fScalar != 0.0 );
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| 187 |
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| 188 | Vector4 kDiv;
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| 189 |
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| 190 | Real fInv = 1.0 / fScalar;
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| 191 | kDiv.x = x * fInv;
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| 192 | kDiv.y = y * fInv;
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| 193 | kDiv.z = z * fInv;
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| 194 | kDiv.w = w * fInv;
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| 195 |
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| 196 | return kDiv;
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| 197 | }
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| 198 |
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| 199 | inline Vector4 operator / ( const Vector4& rhs) const
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| 200 | {
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| 201 | Vector4 kDiv;
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| 202 |
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| 203 | kDiv.x = x / rhs.x;
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| 204 | kDiv.y = y / rhs.y;
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| 205 | kDiv.z = z / rhs.z;
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| 206 | kDiv.w = w / rhs.w;
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| 207 |
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| 208 | return kDiv;
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| 209 | }
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| 210 |
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| 211 |
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| 212 | inline Vector4 operator - () const
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| 213 | {
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| 214 | Vector4 kNeg;
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| 215 |
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| 216 | kNeg.x = -x;
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| 217 | kNeg.y = -y;
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| 218 | kNeg.z = -z;
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| 219 | kNeg.w = -w;
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| 220 |
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| 221 | return kNeg;
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| 222 | }
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| 223 |
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| 224 | inline friend Vector4 operator * ( Real fScalar, const Vector4& rkVector )
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| 225 | {
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| 226 | Vector4 kProd;
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| 227 |
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| 228 | kProd.x = fScalar * rkVector.x;
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| 229 | kProd.y = fScalar * rkVector.y;
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| 230 | kProd.z = fScalar * rkVector.z;
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| 231 | kProd.w = fScalar * rkVector.w;
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| 232 |
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| 233 | return kProd;
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| 234 | }
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| 235 |
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| 236 | // arithmetic updates
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| 237 | inline Vector4& operator += ( const Vector4& rkVector )
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| 238 | {
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| 239 | x += rkVector.x;
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| 240 | y += rkVector.y;
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| 241 | z += rkVector.z;
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| 242 | w += rkVector.w;
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| 243 |
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| 244 | return *this;
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| 245 | }
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| 246 |
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| 247 | inline Vector4& operator -= ( const Vector4& rkVector )
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| 248 | {
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| 249 | x -= rkVector.x;
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| 250 | y -= rkVector.y;
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| 251 | z -= rkVector.z;
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| 252 | w -= rkVector.w;
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| 253 |
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| 254 | return *this;
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| 255 | }
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| 256 |
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| 257 | inline Vector4& operator *= ( Real fScalar )
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| 258 | {
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| 259 | x *= fScalar;
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| 260 | y *= fScalar;
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| 261 | z *= fScalar;
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| 262 | w *= fScalar;
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| 263 | return *this;
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| 264 | }
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| 265 |
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| 266 | inline Vector4& operator *= ( const Vector4& rkVector )
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| 267 | {
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| 268 | x *= rkVector.x;
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| 269 | y *= rkVector.y;
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| 270 | z *= rkVector.z;
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| 271 | w *= rkVector.w;
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| 272 |
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| 273 | return *this;
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| 274 | }
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| 275 |
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| 276 | inline Vector4& operator /= ( Real fScalar )
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| 277 | {
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| 278 | assert( fScalar != 0.0 );
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| 279 |
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| 280 | Real fInv = 1.0 / fScalar;
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| 281 |
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| 282 | x *= fInv;
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| 283 | y *= fInv;
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| 284 | z *= fInv;
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| 285 | w *= fInv;
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| 286 |
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| 287 | return *this;
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| 288 | }
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| 289 |
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| 290 | inline Vector4& operator /= ( const Vector4& rkVector )
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| 291 | {
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| 292 | x /= rkVector.x;
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| 293 | y /= rkVector.y;
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| 294 | z /= rkVector.z;
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| 295 | w /= rkVector.w;
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| 296 |
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| 297 | return *this;
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| 298 | }
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| 299 |
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| 300 | /** Calculates the dot (scalar) product of this vector with another.
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| 301 | @param
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| 302 | vec Vector with which to calculate the dot product (together
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| 303 | with this one).
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| 304 | @returns
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| 305 | A float representing the dot product value.
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| 306 | */
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| 307 | inline Real dotProduct(const Vector4& vec) const
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| 308 | {
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| 309 | return x * vec.x + y * vec.y + z * vec.z + w * vec.w;
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| 310 | }
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| 311 | /** Function for writing to a stream.
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| 312 | */
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| 313 | inline _OgreExport friend std::ostream& operator <<
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| 314 | ( std::ostream& o, const Vector4& v )
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| 315 | {
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| 316 | o << "Vector4(" << v.x << ", " << v.y << ", " << v.z << ", " << v.w << ")";
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| 317 | return o;
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| 318 | }
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| 319 | };
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| 320 |
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| 321 | }
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| 322 | #endif
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