[1] | 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) 2000-2006 Torus Knot Software Ltd |
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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 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | #ifndef __Vector4_H__ |
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| 30 | #define __Vector4_H__ |
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| 31 | |
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| 32 | #include "OgrePrerequisites.h" |
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| 33 | #include "OgreVector3.h" |
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| 34 | |
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| 35 | namespace Ogre |
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| 36 | { |
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| 37 | |
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| 38 | /** 4-dimensional homogenous vector. |
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| 39 | */ |
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| 40 | class _OgreExport Vector4 |
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| 41 | { |
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| 42 | public: |
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| 43 | Real x, y, z, w; |
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| 44 | |
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| 45 | public: |
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| 46 | inline Vector4() |
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| 47 | { |
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| 48 | } |
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| 49 | |
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| 50 | inline Vector4( const Real fX, const Real fY, const Real fZ, const Real fW ) |
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| 51 | : x( fX ), y( fY ), z( fZ ), w( fW) |
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| 52 | { |
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| 53 | } |
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| 54 | |
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| 55 | inline explicit Vector4( const Real afCoordinate[4] ) |
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| 56 | : x( afCoordinate[0] ), |
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| 57 | y( afCoordinate[1] ), |
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| 58 | z( afCoordinate[2] ), |
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| 59 | w( afCoordinate[3] ) |
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| 60 | { |
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| 61 | } |
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| 62 | |
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| 63 | inline explicit Vector4( const int afCoordinate[4] ) |
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| 64 | { |
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| 65 | x = (Real)afCoordinate[0]; |
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| 66 | y = (Real)afCoordinate[1]; |
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| 67 | z = (Real)afCoordinate[2]; |
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| 68 | w = (Real)afCoordinate[3]; |
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| 69 | } |
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| 70 | |
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| 71 | inline explicit Vector4( Real* const r ) |
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| 72 | : x( r[0] ), y( r[1] ), z( r[2] ), w( r[3] ) |
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| 73 | { |
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| 74 | } |
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| 75 | |
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| 76 | inline explicit Vector4( const Real scaler ) |
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| 77 | : x( scaler ) |
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| 78 | , y( scaler ) |
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| 79 | , z( scaler ) |
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| 80 | , w( scaler ) |
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| 81 | { |
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| 82 | } |
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| 83 | |
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| 84 | inline explicit Vector4(const Vector3& rhs) |
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| 85 | : x(rhs.x), y(rhs.y), z(rhs.z), w(1.0f) |
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| 86 | { |
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| 87 | } |
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| 88 | |
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| 89 | inline Vector4( const Vector4& rkVector ) |
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| 90 | : x( rkVector.x ), y( rkVector.y ), z( rkVector.z ), w (rkVector.w) |
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| 91 | { |
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| 92 | } |
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| 93 | |
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| 94 | inline Real operator [] ( const size_t i ) const |
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| 95 | { |
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| 96 | assert( i < 4 ); |
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| 97 | |
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| 98 | return *(&x+i); |
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| 99 | } |
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| 100 | |
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| 101 | inline Real& operator [] ( const size_t i ) |
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| 102 | { |
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| 103 | assert( i < 4 ); |
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| 104 | |
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| 105 | return *(&x+i); |
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| 106 | } |
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| 107 | |
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| 108 | /// Pointer accessor for direct copying |
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| 109 | inline Real* ptr() |
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| 110 | { |
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| 111 | return &x; |
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| 112 | } |
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| 113 | /// Pointer accessor for direct copying |
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| 114 | inline const Real* ptr() const |
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| 115 | { |
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| 116 | return &x; |
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| 117 | } |
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| 118 | |
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| 119 | /** Assigns the value of the other vector. |
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| 120 | @param |
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| 121 | rkVector The other vector |
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| 122 | */ |
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| 123 | inline Vector4& operator = ( const Vector4& rkVector ) |
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| 124 | { |
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| 125 | x = rkVector.x; |
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| 126 | y = rkVector.y; |
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| 127 | z = rkVector.z; |
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| 128 | w = rkVector.w; |
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| 129 | |
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| 130 | return *this; |
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| 131 | } |
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| 132 | |
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| 133 | inline Vector4& operator = ( const Real fScalar) |
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| 134 | { |
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| 135 | x = fScalar; |
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| 136 | y = fScalar; |
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| 137 | z = fScalar; |
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| 138 | w = fScalar; |
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| 139 | return *this; |
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| 140 | } |
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| 141 | |
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| 142 | inline bool operator == ( const Vector4& rkVector ) const |
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| 143 | { |
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| 144 | return ( x == rkVector.x && |
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| 145 | y == rkVector.y && |
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| 146 | z == rkVector.z && |
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| 147 | w == rkVector.w ); |
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| 148 | } |
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| 149 | |
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| 150 | inline bool operator != ( const Vector4& rkVector ) const |
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| 151 | { |
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| 152 | return ( x != rkVector.x || |
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| 153 | y != rkVector.y || |
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| 154 | z != rkVector.z || |
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| 155 | w != rkVector.w ); |
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| 156 | } |
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| 157 | |
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| 158 | inline Vector4& operator = (const Vector3& rhs) |
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| 159 | { |
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| 160 | x = rhs.x; |
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| 161 | y = rhs.y; |
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| 162 | z = rhs.z; |
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| 163 | w = 1.0f; |
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| 164 | return *this; |
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| 165 | } |
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| 166 | |
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| 167 | // arithmetic operations |
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| 168 | inline Vector4 operator + ( const Vector4& rkVector ) const |
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| 169 | { |
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| 170 | return Vector4( |
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| 171 | x + rkVector.x, |
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| 172 | y + rkVector.y, |
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| 173 | z + rkVector.z, |
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| 174 | w + rkVector.w); |
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| 175 | } |
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| 176 | |
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| 177 | inline Vector4 operator - ( const Vector4& rkVector ) const |
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| 178 | { |
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| 179 | return Vector4( |
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| 180 | x - rkVector.x, |
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| 181 | y - rkVector.y, |
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| 182 | z - rkVector.z, |
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| 183 | w - rkVector.w); |
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| 184 | } |
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| 185 | |
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| 186 | inline Vector4 operator * ( const Real fScalar ) const |
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| 187 | { |
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| 188 | return Vector4( |
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| 189 | x * fScalar, |
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| 190 | y * fScalar, |
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| 191 | z * fScalar, |
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| 192 | w * fScalar); |
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| 193 | } |
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| 194 | |
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| 195 | inline Vector4 operator * ( const Vector4& rhs) const |
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| 196 | { |
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| 197 | return Vector4( |
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| 198 | rhs.x * x, |
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| 199 | rhs.y * y, |
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| 200 | rhs.z * z, |
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| 201 | rhs.w * w); |
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| 202 | } |
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| 203 | |
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| 204 | inline Vector4 operator / ( const Real fScalar ) const |
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| 205 | { |
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| 206 | assert( fScalar != 0.0 ); |
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| 207 | |
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| 208 | Real fInv = 1.0 / fScalar; |
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| 209 | |
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| 210 | return Vector4( |
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| 211 | x * fInv, |
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| 212 | y * fInv, |
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| 213 | z * fInv, |
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| 214 | w * fInv); |
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| 215 | } |
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| 216 | |
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| 217 | inline Vector4 operator / ( const Vector4& rhs) const |
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| 218 | { |
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| 219 | return Vector4( |
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| 220 | x / rhs.x, |
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| 221 | y / rhs.y, |
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| 222 | z / rhs.z, |
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| 223 | w / rhs.w); |
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| 224 | } |
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| 225 | |
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| 226 | inline const Vector4& operator + () const |
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| 227 | { |
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| 228 | return *this; |
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| 229 | } |
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| 230 | |
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| 231 | inline Vector4 operator - () const |
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| 232 | { |
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| 233 | return Vector4(-x, -y, -z, -w); |
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| 234 | } |
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| 235 | |
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| 236 | inline friend Vector4 operator * ( const Real fScalar, const Vector4& rkVector ) |
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| 237 | { |
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| 238 | return Vector4( |
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| 239 | fScalar * rkVector.x, |
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| 240 | fScalar * rkVector.y, |
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| 241 | fScalar * rkVector.z, |
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| 242 | fScalar * rkVector.w); |
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| 243 | } |
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| 244 | |
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| 245 | inline friend Vector4 operator / ( const Real fScalar, const Vector4& rkVector ) |
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| 246 | { |
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| 247 | return Vector4( |
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| 248 | fScalar / rkVector.x, |
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| 249 | fScalar / rkVector.y, |
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| 250 | fScalar / rkVector.z, |
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| 251 | fScalar / rkVector.w); |
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| 252 | } |
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| 253 | |
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| 254 | inline friend Vector4 operator + (const Vector4& lhs, const Real rhs) |
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| 255 | { |
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| 256 | return Vector4( |
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| 257 | lhs.x + rhs, |
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| 258 | lhs.y + rhs, |
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| 259 | lhs.z + rhs, |
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| 260 | lhs.w + rhs); |
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| 261 | } |
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| 262 | |
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| 263 | inline friend Vector4 operator + (const Real lhs, const Vector4& rhs) |
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| 264 | { |
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| 265 | return Vector4( |
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| 266 | lhs + rhs.x, |
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| 267 | lhs + rhs.y, |
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| 268 | lhs + rhs.z, |
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| 269 | lhs + rhs.w); |
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| 270 | } |
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| 271 | |
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| 272 | inline friend Vector4 operator - (const Vector4& lhs, Real rhs) |
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| 273 | { |
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| 274 | return Vector4( |
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| 275 | lhs.x - rhs, |
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| 276 | lhs.y - rhs, |
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| 277 | lhs.z - rhs, |
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| 278 | lhs.w - rhs); |
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| 279 | } |
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| 280 | |
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| 281 | inline friend Vector4 operator - (const Real lhs, const Vector4& rhs) |
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| 282 | { |
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| 283 | return Vector4( |
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| 284 | lhs - rhs.x, |
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| 285 | lhs - rhs.y, |
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| 286 | lhs - rhs.z, |
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| 287 | lhs - rhs.w); |
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| 288 | } |
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| 289 | |
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| 290 | // arithmetic updates |
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| 291 | inline Vector4& operator += ( const Vector4& rkVector ) |
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| 292 | { |
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| 293 | x += rkVector.x; |
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| 294 | y += rkVector.y; |
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| 295 | z += rkVector.z; |
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| 296 | w += rkVector.w; |
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| 297 | |
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| 298 | return *this; |
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| 299 | } |
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| 300 | |
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| 301 | inline Vector4& operator -= ( const Vector4& rkVector ) |
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| 302 | { |
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| 303 | x -= rkVector.x; |
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| 304 | y -= rkVector.y; |
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| 305 | z -= rkVector.z; |
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| 306 | w -= rkVector.w; |
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| 307 | |
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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 Real fScalar ) |
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| 330 | { |
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| 331 | x -= fScalar; |
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| 332 | y -= fScalar; |
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| 333 | z -= fScalar; |
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| 334 | w -= fScalar; |
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| 335 | return *this; |
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| 336 | } |
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| 337 | |
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| 338 | inline Vector4& operator *= ( const Vector4& rkVector ) |
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| 339 | { |
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| 340 | x *= rkVector.x; |
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| 341 | y *= rkVector.y; |
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| 342 | z *= rkVector.z; |
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| 343 | w *= rkVector.w; |
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| 344 | |
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| 345 | return *this; |
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| 346 | } |
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| 347 | |
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| 348 | inline Vector4& operator /= ( const Real fScalar ) |
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| 349 | { |
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| 350 | assert( fScalar != 0.0 ); |
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| 351 | |
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| 352 | Real fInv = 1.0 / fScalar; |
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| 353 | |
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| 354 | x *= fInv; |
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| 355 | y *= fInv; |
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| 356 | z *= fInv; |
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| 357 | w *= fInv; |
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| 358 | |
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| 359 | return *this; |
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| 360 | } |
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| 361 | |
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| 362 | inline Vector4& operator /= ( const Vector4& rkVector ) |
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| 363 | { |
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| 364 | x /= rkVector.x; |
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| 365 | y /= rkVector.y; |
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| 366 | z /= rkVector.z; |
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| 367 | w /= rkVector.w; |
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| 368 | |
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| 369 | return *this; |
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| 370 | } |
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| 371 | |
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| 372 | /** Calculates the dot (scalar) product of this vector with another. |
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| 373 | @param |
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| 374 | vec Vector with which to calculate the dot product (together |
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| 375 | with this one). |
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| 376 | @returns |
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| 377 | A float representing the dot product value. |
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| 378 | */ |
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| 379 | inline Real dotProduct(const Vector4& vec) const |
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| 380 | { |
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| 381 | return x * vec.x + y * vec.y + z * vec.z + w * vec.w; |
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| 382 | } |
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| 383 | /** Function for writing to a stream. |
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| 384 | */ |
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| 385 | inline _OgreExport friend std::ostream& operator << |
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| 386 | ( std::ostream& o, const Vector4& v ) |
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| 387 | { |
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| 388 | o << "Vector4(" << v.x << ", " << v.y << ", " << v.z << ", " << v.w << ")"; |
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| 389 | return o; |
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| 390 | } |
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| 391 | // special |
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| 392 | static const Vector4 ZERO; |
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| 393 | }; |
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| 394 | |
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| 395 | } |
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| 396 | #endif |
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