[692] | 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( const Real fX, const Real fY, const Real fZ, const 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 explicit Vector4( const 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 explicit Vector4( const 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 explicit Vector4( 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 explicit Vector4( const Real scaler )
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| 78 | : x( scaler )
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| 79 | , y( scaler )
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| 80 | , z( scaler )
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| 81 | , w( scaler )
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| 82 | {
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| 83 | }
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| 84 |
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| 85 | inline Vector4( const Vector4& rkVector )
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| 86 | : x( rkVector.x ), y( rkVector.y ), z( rkVector.z ), w (rkVector.w)
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| 87 | {
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| 88 | }
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| 89 |
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| 90 | inline Real operator [] ( const size_t i ) const
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| 91 | {
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| 92 | assert( i < 4 );
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| 93 |
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| 94 | return *(&x+i);
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| 95 | }
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| 96 |
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| 97 | inline Real& operator [] ( const size_t i )
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| 98 | {
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| 99 | assert( i < 4 );
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| 100 |
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| 101 | return *(&x+i);
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| 102 | }
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| 103 |
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| 104 | /** Assigns the value of the other vector.
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| 105 | @param
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| 106 | rkVector The other vector
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| 107 | */
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| 108 | inline Vector4& operator = ( const Vector4& rkVector )
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| 109 | {
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| 110 | x = rkVector.x;
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| 111 | y = rkVector.y;
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| 112 | z = rkVector.z;
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| 113 | w = rkVector.w;
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| 114 |
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| 115 | return *this;
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| 116 | }
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| 117 |
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| 118 | inline Vector4& operator = ( const Real fScalar)
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| 119 | {
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| 120 | x = fScalar;
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| 121 | y = fScalar;
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| 122 | z = fScalar;
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| 123 | w = fScalar;
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| 124 | return *this;
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| 125 | }
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| 126 |
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| 127 | inline bool operator == ( const Vector4& rkVector ) const
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| 128 | {
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| 129 | return ( x == rkVector.x &&
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| 130 | y == rkVector.y &&
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| 131 | z == rkVector.z &&
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| 132 | w == rkVector.w );
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| 133 | }
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| 134 |
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| 135 | inline bool operator != ( const Vector4& rkVector ) const
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| 136 | {
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| 137 | return ( x != rkVector.x ||
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| 138 | y != rkVector.y ||
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| 139 | z != rkVector.z ||
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| 140 | w != rkVector.w );
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| 141 | }
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| 142 |
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| 143 | inline Vector4& operator = (const Vector3& rhs)
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| 144 | {
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| 145 | x = rhs.x;
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| 146 | y = rhs.y;
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| 147 | z = rhs.z;
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| 148 | w = 1.0f;
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| 149 | return *this;
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| 150 | }
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| 151 |
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| 152 | // arithmetic operations
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| 153 | inline Vector4 operator + ( const Vector4& rkVector ) const
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| 154 | {
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| 155 | Vector4 kSum;
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| 156 |
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| 157 | kSum.x = x + rkVector.x;
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| 158 | kSum.y = y + rkVector.y;
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| 159 | kSum.z = z + rkVector.z;
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| 160 | kSum.w = w + rkVector.w;
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| 161 |
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| 162 | return kSum;
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| 163 | }
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| 164 |
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| 165 | inline Vector4 operator - ( const Vector4& rkVector ) const
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| 166 | {
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| 167 | Vector4 kDiff;
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| 168 |
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| 169 | kDiff.x = x - rkVector.x;
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| 170 | kDiff.y = y - rkVector.y;
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| 171 | kDiff.z = z - rkVector.z;
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| 172 | kDiff.w = w - rkVector.w;
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| 173 |
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| 174 | return kDiff;
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| 175 | }
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| 176 |
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| 177 | inline Vector4 operator * ( const Real fScalar ) const
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| 178 | {
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| 179 | Vector4 kProd;
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| 180 |
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| 181 | kProd.x = fScalar*x;
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| 182 | kProd.y = fScalar*y;
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| 183 | kProd.z = fScalar*z;
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| 184 | kProd.w = fScalar*w;
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| 185 |
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| 186 | return kProd;
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| 187 | }
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| 188 |
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| 189 | inline Vector4 operator * ( const Vector4& rhs) const
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| 190 | {
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| 191 | Vector4 kProd;
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| 192 |
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| 193 | kProd.x = rhs.x * x;
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| 194 | kProd.y = rhs.y * y;
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| 195 | kProd.z = rhs.z * z;
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| 196 | kProd.w = rhs.w * w;
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| 197 |
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| 198 | return kProd;
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| 199 | }
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| 200 |
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| 201 | inline Vector4 operator / ( const Real fScalar ) const
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| 202 | {
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| 203 | assert( fScalar != 0.0 );
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| 204 |
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| 205 | Vector4 kDiv;
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| 206 |
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| 207 | Real fInv = 1.0 / fScalar;
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| 208 | kDiv.x = x * fInv;
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| 209 | kDiv.y = y * fInv;
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| 210 | kDiv.z = z * fInv;
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| 211 | kDiv.w = w * fInv;
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| 212 |
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| 213 | return kDiv;
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| 214 | }
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| 215 |
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| 216 | inline Vector4 operator / ( const Vector4& rhs) const
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| 217 | {
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| 218 | Vector4 kDiv;
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| 219 |
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| 220 | kDiv.x = x / rhs.x;
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| 221 | kDiv.y = y / rhs.y;
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| 222 | kDiv.z = z / rhs.z;
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| 223 | kDiv.w = w / rhs.w;
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| 224 |
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| 225 | return kDiv;
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| 226 | }
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| 227 |
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| 228 |
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| 229 | inline Vector4 operator - () const
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| 230 | {
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| 231 | Vector4 kNeg;
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| 232 |
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| 233 | kNeg.x = -x;
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| 234 | kNeg.y = -y;
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| 235 | kNeg.z = -z;
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| 236 | kNeg.w = -w;
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| 237 |
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| 238 | return kNeg;
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| 239 | }
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| 240 |
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| 241 | inline friend Vector4 operator * ( const Real fScalar, const Vector4& rkVector )
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| 242 | {
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| 243 | Vector4 kProd;
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| 244 |
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| 245 | kProd.x = fScalar * rkVector.x;
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| 246 | kProd.y = fScalar * rkVector.y;
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| 247 | kProd.z = fScalar * rkVector.z;
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| 248 | kProd.w = fScalar * rkVector.w;
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| 249 |
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| 250 | return kProd;
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| 251 | }
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| 252 |
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| 253 | inline friend Vector4 operator + (const Vector4& lhs, const Real rhs)
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| 254 | {
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| 255 | Vector4 ret;
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| 256 | ret = rhs;
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| 257 | return ret += lhs;
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| 258 | }
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| 259 |
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| 260 | inline friend Vector4 operator + (const Real lhs, const Vector4& rhs)
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| 261 | {
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| 262 | Vector4 ret;
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| 263 | ret = lhs;
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| 264 | return ret += rhs;
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| 265 | }
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| 266 |
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| 267 | inline friend Vector4 operator - (const Vector4& lhs, Real rhs)
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| 268 | {
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| 269 | Vector4 ret;
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| 270 | ret = lhs;
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| 271 | return ret -= rhs;
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| 272 | }
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| 273 |
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| 274 | inline friend Vector4 operator - (const Real lhs, const Vector4& rhs)
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| 275 | {
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| 276 | Vector4 ret;
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| 277 | ret = lhs;
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| 278 | return ret -= rhs;
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| 279 | }
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| 280 |
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| 281 | // arithmetic updates
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| 282 | inline Vector4& operator += ( const Vector4& rkVector )
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| 283 | {
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| 284 | x += rkVector.x;
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| 285 | y += rkVector.y;
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| 286 | z += rkVector.z;
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| 287 | w += rkVector.w;
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| 288 |
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| 289 | return *this;
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| 290 | }
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| 291 |
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| 292 | inline Vector4& operator -= ( const Vector4& rkVector )
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| 293 | {
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| 294 | x -= rkVector.x;
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| 295 | y -= rkVector.y;
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| 296 | z -= rkVector.z;
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| 297 | w -= rkVector.w;
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| 298 |
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| 299 | return *this;
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| 300 | }
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| 301 |
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| 302 | inline Vector4& operator *= ( const Real fScalar )
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| 303 | {
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| 304 | x *= fScalar;
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| 305 | y *= fScalar;
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| 306 | z *= fScalar;
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| 307 | w *= fScalar;
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| 308 | return *this;
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| 309 | }
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| 310 |
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| 311 | inline Vector4& operator += ( const Real fScalar )
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| 312 | {
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| 313 | x += fScalar;
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| 314 | y += fScalar;
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| 315 | z += fScalar;
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| 316 | w += fScalar;
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| 317 | return *this;
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| 318 | }
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| 319 |
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| 320 | inline Vector4& operator -= ( const Real fScalar )
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| 321 | {
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| 322 | x -= fScalar;
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| 323 | y -= fScalar;
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| 324 | z -= fScalar;
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| 325 | w -= fScalar;
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| 326 | return *this;
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| 327 | }
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| 328 |
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| 329 | inline Vector4& operator *= ( const Vector4& rkVector )
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| 330 | {
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| 331 | x *= rkVector.x;
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| 332 | y *= rkVector.y;
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| 333 | z *= rkVector.z;
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| 334 | w *= rkVector.w;
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| 335 |
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| 336 | return *this;
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| 337 | }
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| 338 |
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| 339 | inline Vector4& operator /= ( const Real fScalar )
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| 340 | {
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| 341 | assert( fScalar != 0.0 );
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| 342 |
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| 343 | Real fInv = 1.0 / fScalar;
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| 344 |
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| 345 | x *= fInv;
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| 346 | y *= fInv;
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| 347 | z *= fInv;
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| 348 | w *= fInv;
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| 349 |
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| 350 | return *this;
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| 351 | }
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| 352 |
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| 353 | inline Vector4& operator /= ( const Vector4& rkVector )
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| 354 | {
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| 355 | x /= rkVector.x;
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| 356 | y /= rkVector.y;
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| 357 | z /= rkVector.z;
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| 358 | w /= rkVector.w;
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| 359 |
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| 360 | return *this;
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| 361 | }
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| 362 |
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| 363 | /** Calculates the dot (scalar) product of this vector with another.
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| 364 | @param
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| 365 | vec Vector with which to calculate the dot product (together
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| 366 | with this one).
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| 367 | @returns
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| 368 | A float representing the dot product value.
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| 369 | */
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| 370 | inline Real dotProduct(const Vector4& vec) const
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| 371 | {
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| 372 | return x * vec.x + y * vec.y + z * vec.z + w * vec.w;
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| 373 | }
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| 374 | /** Function for writing to a stream.
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| 375 | */
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| 376 | inline _OgreExport friend std::ostream& operator <<
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| 377 | ( std::ostream& o, const Vector4& v )
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| 378 | {
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| 379 | o << "Vector4(" << v.x << ", " << v.y << ", " << v.z << ", " << v.w << ")";
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| 380 | return o;
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| 381 | }
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| 382 | // special
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| 383 | static const Vector4 ZERO;
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| 384 | };
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| 385 |
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| 386 | }
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| 387 | #endif
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