[1812] | 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 explicit Vector4(const Vector3& rhs)
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| 86 | : x(rhs.x), y(rhs.y), z(rhs.z), w(1.0f)
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| 87 | {
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| 88 | }
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| 89 |
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| 90 | inline Vector4( const Vector4& rkVector )
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| 91 | : x( rkVector.x ), y( rkVector.y ), z( rkVector.z ), w (rkVector.w)
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| 92 | {
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| 93 | }
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| 94 |
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| 95 | inline Real operator [] ( const size_t i ) const
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| 96 | {
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| 97 | assert( i < 4 );
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| 98 |
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| 99 | return *(&x+i);
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| 100 | }
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| 101 |
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| 102 | inline Real& operator [] ( const size_t i )
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| 103 | {
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| 104 | assert( i < 4 );
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| 105 |
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| 106 | return *(&x+i);
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| 107 | }
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| 108 |
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| 109 | /** Assigns the value of the other vector.
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| 110 | @param
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| 111 | rkVector The other vector
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| 112 | */
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| 113 | inline Vector4& operator = ( const Vector4& rkVector )
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| 114 | {
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| 115 | x = rkVector.x;
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| 116 | y = rkVector.y;
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| 117 | z = rkVector.z;
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| 118 | w = rkVector.w;
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| 119 |
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| 120 | return *this;
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| 121 | }
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| 122 |
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| 123 | inline Vector4& operator = ( const Real fScalar)
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| 124 | {
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| 125 | x = fScalar;
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| 126 | y = fScalar;
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| 127 | z = fScalar;
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| 128 | w = fScalar;
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| 129 | return *this;
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| 130 | }
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| 131 |
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| 132 | inline bool operator == ( const Vector4& rkVector ) const
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| 133 | {
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| 134 | return ( x == rkVector.x &&
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| 135 | y == rkVector.y &&
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| 136 | z == rkVector.z &&
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| 137 | w == rkVector.w );
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| 138 | }
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| 139 |
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| 140 | inline bool operator != ( const Vector4& rkVector ) const
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| 141 | {
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| 142 | return ( x != rkVector.x ||
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| 143 | y != rkVector.y ||
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| 144 | z != rkVector.z ||
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| 145 | w != rkVector.w );
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| 146 | }
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| 147 |
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| 148 | inline Vector4& operator = (const Vector3& rhs)
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| 149 | {
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| 150 | x = rhs.x;
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| 151 | y = rhs.y;
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| 152 | z = rhs.z;
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| 153 | w = 1.0f;
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| 154 | return *this;
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| 155 | }
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| 156 |
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| 157 | // arithmetic operations
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| 158 | inline Vector4 operator + ( const Vector4& rkVector ) const
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| 159 | {
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| 160 | return Vector4(
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| 161 | x + rkVector.x,
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| 162 | y + rkVector.y,
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| 163 | z + rkVector.z,
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| 164 | w + rkVector.w);
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| 165 | }
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| 166 |
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| 167 | inline Vector4 operator - ( const Vector4& rkVector ) const
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| 168 | {
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| 169 | return Vector4(
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| 170 | x - rkVector.x,
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| 171 | y - rkVector.y,
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| 172 | z - rkVector.z,
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| 173 | w - rkVector.w);
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| 174 | }
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| 175 |
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| 176 | inline Vector4 operator * ( const Real fScalar ) const
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| 177 | {
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| 178 | return Vector4(
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| 179 | x * fScalar,
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| 180 | y * fScalar,
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| 181 | z * fScalar,
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| 182 | w * fScalar);
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| 183 | }
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| 184 |
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| 185 | inline Vector4 operator * ( const Vector4& rhs) const
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| 186 | {
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| 187 | return Vector4(
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| 188 | rhs.x * x,
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| 189 | rhs.y * y,
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| 190 | rhs.z * z,
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| 191 | rhs.w * w);
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| 192 | }
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| 193 |
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| 194 | inline Vector4 operator / ( const Real fScalar ) const
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| 195 | {
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| 196 | assert( fScalar != 0.0 );
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| 197 |
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| 198 | Real fInv = 1.0 / fScalar;
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| 199 |
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| 200 | return Vector4(
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| 201 | x * fInv,
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| 202 | y * fInv,
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| 203 | z * fInv,
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| 204 | w * fInv);
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| 205 | }
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| 206 |
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| 207 | inline Vector4 operator / ( const Vector4& rhs) const
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| 208 | {
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| 209 | return Vector4(
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| 210 | x / rhs.x,
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| 211 | y / rhs.y,
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| 212 | z / rhs.z,
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| 213 | w / rhs.w);
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| 214 | }
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| 215 |
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| 216 | inline const Vector4& operator + () const
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| 217 | {
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| 218 | return *this;
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| 219 | }
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| 220 |
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| 221 | inline Vector4 operator - () const
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| 222 | {
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| 223 | return Vector4(-x, -y, -z, -w);
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| 224 | }
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| 225 |
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| 226 | inline friend Vector4 operator * ( const Real fScalar, const Vector4& rkVector )
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| 227 | {
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| 228 | return Vector4(
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| 229 | fScalar * rkVector.x,
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| 230 | fScalar * rkVector.y,
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| 231 | fScalar * rkVector.z,
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| 232 | fScalar * rkVector.w);
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| 233 | }
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| 234 |
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| 235 | inline friend Vector4 operator / ( const Real fScalar, const Vector4& rkVector )
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| 236 | {
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| 237 | return Vector4(
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| 238 | fScalar / rkVector.x,
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| 239 | fScalar / rkVector.y,
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| 240 | fScalar / rkVector.z,
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| 241 | fScalar / rkVector.w);
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| 242 | }
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| 243 |
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| 244 | inline friend Vector4 operator + (const Vector4& lhs, const Real rhs)
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| 245 | {
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| 246 | return Vector4(
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| 247 | lhs.x + rhs,
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| 248 | lhs.y + rhs,
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| 249 | lhs.z + rhs,
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| 250 | lhs.w + rhs);
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| 251 | }
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| 252 |
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| 253 | inline friend Vector4 operator + (const Real lhs, const Vector4& rhs)
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| 254 | {
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| 255 | return Vector4(
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| 256 | lhs + rhs.x,
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| 257 | lhs + rhs.y,
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| 258 | lhs + rhs.z,
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| 259 | lhs + rhs.w);
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| 260 | }
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| 261 |
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| 262 | inline friend Vector4 operator - (const Vector4& lhs, Real rhs)
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| 263 | {
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| 264 | return Vector4(
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| 265 | lhs.x - rhs,
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| 266 | lhs.y - rhs,
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| 267 | lhs.z - rhs,
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| 268 | lhs.w - rhs);
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| 269 | }
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| 270 |
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| 271 | inline friend Vector4 operator - (const Real lhs, const Vector4& rhs)
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| 272 | {
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| 273 | return Vector4(
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| 274 | lhs - rhs.x,
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| 275 | lhs - rhs.y,
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| 276 | lhs - rhs.z,
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| 277 | lhs - rhs.w);
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| 278 | }
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| 279 |
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| 280 | // arithmetic updates
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| 281 | inline Vector4& operator += ( const Vector4& rkVector )
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| 282 | {
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| 283 | x += rkVector.x;
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| 284 | y += rkVector.y;
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| 285 | z += rkVector.z;
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| 286 | w += rkVector.w;
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| 287 |
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| 288 | return *this;
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| 289 | }
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| 290 |
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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 Real fScalar )
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| 302 | {
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| 303 | x *= fScalar;
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| 304 | y *= fScalar;
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| 305 | z *= fScalar;
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| 306 | w *= fScalar;
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| 307 | return *this;
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| 308 | }
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| 309 |
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| 310 | inline Vector4& operator += ( const Real fScalar )
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| 311 | {
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| 312 | x += fScalar;
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| 313 | y += fScalar;
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| 314 | z += fScalar;
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| 315 | w += fScalar;
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| 316 | return *this;
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| 317 | }
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| 318 |
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| 319 | inline Vector4& operator -= ( const Real fScalar )
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| 320 | {
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| 321 | x -= fScalar;
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| 322 | y -= fScalar;
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| 323 | z -= fScalar;
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| 324 | w -= fScalar;
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| 325 | return *this;
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| 326 | }
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| 327 |
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| 328 | inline Vector4& operator *= ( const Vector4& rkVector )
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| 329 | {
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| 330 | x *= rkVector.x;
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| 331 | y *= rkVector.y;
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| 332 | z *= rkVector.z;
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| 333 | w *= rkVector.w;
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| 334 |
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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 Real fScalar )
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| 339 | {
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| 340 | assert( fScalar != 0.0 );
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| 341 |
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| 342 | Real fInv = 1.0 / fScalar;
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| 343 |
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| 344 | x *= fInv;
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| 345 | y *= fInv;
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| 346 | z *= fInv;
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| 347 | w *= fInv;
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| 348 |
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| 349 | return *this;
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| 350 | }
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| 351 |
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| 352 | inline Vector4& operator /= ( const Vector4& rkVector )
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| 353 | {
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| 354 | x /= rkVector.x;
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| 355 | y /= rkVector.y;
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| 356 | z /= rkVector.z;
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| 357 | w /= rkVector.w;
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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 | /** Calculates the dot (scalar) product of this vector with another.
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| 363 | @param
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| 364 | vec Vector with which to calculate the dot product (together
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| 365 | with this one).
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| 366 | @returns
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| 367 | A float representing the dot product value.
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| 368 | */
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| 369 | inline Real dotProduct(const Vector4& vec) const
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| 370 | {
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| 371 | return x * vec.x + y * vec.y + z * vec.z + w * vec.w;
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| 372 | }
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| 373 | /** Function for writing to a stream.
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| 374 | */
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| 375 | inline _OgreExport friend std::ostream& operator <<
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| 376 | ( std::ostream& o, const Vector4& v )
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| 377 | {
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| 378 | o << "Vector4(" << v.x << ", " << v.y << ", " << v.z << ", " << v.w << ")";
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| 379 | return o;
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| 380 | }
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| 381 | // special
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| 382 | static const Vector4 ZERO;
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| 383 | };
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| 384 |
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| 385 | }
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| 386 | #endif
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