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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