1 | /* |
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2 | Copyright (c) 2003-2006 Gino van den Bergen / Erwin Coumans http://continuousphysics.com/Bullet/ |
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3 | |
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4 | This software is provided 'as-is', without any express or implied warranty. |
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5 | In no event will the authors be held liable for any damages arising from the use of this software. |
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6 | Permission is granted to anyone to use this software for any purpose, |
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7 | including commercial applications, and to alter it and redistribute it freely, |
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8 | subject to the following restrictions: |
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9 | |
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10 | 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. |
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11 | 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. |
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12 | 3. This notice may not be removed or altered from any source distribution. |
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13 | */ |
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14 | |
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15 | |
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16 | |
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17 | #ifndef BT_VECTOR3_H |
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18 | #define BT_VECTOR3_H |
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19 | |
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20 | |
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21 | #include "btScalar.h" |
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22 | #include "btMinMax.h" |
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23 | |
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24 | #ifdef BT_USE_DOUBLE_PRECISION |
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25 | #define btVector3Data btVector3DoubleData |
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26 | #define btVector3DataName "btVector3DoubleData" |
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27 | #else |
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28 | #define btVector3Data btVector3FloatData |
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29 | #define btVector3DataName "btVector3FloatData" |
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30 | #endif //BT_USE_DOUBLE_PRECISION |
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31 | |
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32 | |
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33 | |
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34 | |
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35 | /**@brief btVector3 can be used to represent 3D points and vectors. |
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36 | * It has an un-used w component to suit 16-byte alignment when btVector3 is stored in containers. This extra component can be used by derived classes (Quaternion?) or by user |
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37 | * Ideally, this class should be replaced by a platform optimized SIMD version that keeps the data in registers |
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38 | */ |
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39 | ATTRIBUTE_ALIGNED16(class) btVector3 |
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40 | { |
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41 | public: |
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42 | |
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43 | #if defined (__SPU__) && defined (__CELLOS_LV2__) |
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44 | btScalar m_floats[4]; |
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45 | public: |
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46 | SIMD_FORCE_INLINE const vec_float4& get128() const |
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47 | { |
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48 | return *((const vec_float4*)&m_floats[0]); |
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49 | } |
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50 | public: |
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51 | #else //__CELLOS_LV2__ __SPU__ |
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52 | #ifdef BT_USE_SSE // _WIN32 |
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53 | union { |
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54 | __m128 mVec128; |
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55 | btScalar m_floats[4]; |
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56 | }; |
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57 | SIMD_FORCE_INLINE __m128 get128() const |
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58 | { |
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59 | return mVec128; |
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60 | } |
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61 | SIMD_FORCE_INLINE void set128(__m128 v128) |
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62 | { |
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63 | mVec128 = v128; |
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64 | } |
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65 | #else |
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66 | btScalar m_floats[4]; |
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67 | #endif |
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68 | #endif //__CELLOS_LV2__ __SPU__ |
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69 | |
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70 | public: |
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71 | |
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72 | /**@brief No initialization constructor */ |
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73 | SIMD_FORCE_INLINE btVector3() {} |
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74 | |
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75 | |
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76 | |
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77 | /**@brief Constructor from scalars |
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78 | * @param x X value |
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79 | * @param y Y value |
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80 | * @param z Z value |
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81 | */ |
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82 | SIMD_FORCE_INLINE btVector3(const btScalar& x, const btScalar& y, const btScalar& z) |
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83 | { |
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84 | m_floats[0] = x; |
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85 | m_floats[1] = y; |
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86 | m_floats[2] = z; |
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87 | m_floats[3] = btScalar(0.); |
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88 | } |
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89 | |
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90 | |
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91 | /**@brief Add a vector to this one |
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92 | * @param The vector to add to this one */ |
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93 | SIMD_FORCE_INLINE btVector3& operator+=(const btVector3& v) |
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94 | { |
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95 | |
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96 | m_floats[0] += v.m_floats[0]; m_floats[1] += v.m_floats[1];m_floats[2] += v.m_floats[2]; |
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97 | return *this; |
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98 | } |
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99 | |
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100 | |
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101 | /**@brief Subtract a vector from this one |
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102 | * @param The vector to subtract */ |
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103 | SIMD_FORCE_INLINE btVector3& operator-=(const btVector3& v) |
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104 | { |
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105 | m_floats[0] -= v.m_floats[0]; m_floats[1] -= v.m_floats[1];m_floats[2] -= v.m_floats[2]; |
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106 | return *this; |
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107 | } |
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108 | /**@brief Scale the vector |
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109 | * @param s Scale factor */ |
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110 | SIMD_FORCE_INLINE btVector3& operator*=(const btScalar& s) |
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111 | { |
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112 | m_floats[0] *= s; m_floats[1] *= s;m_floats[2] *= s; |
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113 | return *this; |
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114 | } |
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115 | |
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116 | /**@brief Inversely scale the vector |
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117 | * @param s Scale factor to divide by */ |
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118 | SIMD_FORCE_INLINE btVector3& operator/=(const btScalar& s) |
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119 | { |
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120 | btFullAssert(s != btScalar(0.0)); |
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121 | return *this *= btScalar(1.0) / s; |
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122 | } |
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123 | |
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124 | /**@brief Return the dot product |
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125 | * @param v The other vector in the dot product */ |
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126 | SIMD_FORCE_INLINE btScalar dot(const btVector3& v) const |
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127 | { |
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128 | return m_floats[0] * v.m_floats[0] + m_floats[1] * v.m_floats[1] +m_floats[2] * v.m_floats[2]; |
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129 | } |
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130 | |
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131 | /**@brief Return the length of the vector squared */ |
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132 | SIMD_FORCE_INLINE btScalar length2() const |
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133 | { |
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134 | return dot(*this); |
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135 | } |
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136 | |
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137 | /**@brief Return the length of the vector */ |
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138 | SIMD_FORCE_INLINE btScalar length() const |
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139 | { |
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140 | return btSqrt(length2()); |
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141 | } |
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142 | |
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143 | /**@brief Return the distance squared between the ends of this and another vector |
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144 | * This is symantically treating the vector like a point */ |
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145 | SIMD_FORCE_INLINE btScalar distance2(const btVector3& v) const; |
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146 | |
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147 | /**@brief Return the distance between the ends of this and another vector |
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148 | * This is symantically treating the vector like a point */ |
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149 | SIMD_FORCE_INLINE btScalar distance(const btVector3& v) const; |
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150 | |
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151 | SIMD_FORCE_INLINE btVector3& safeNormalize() |
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152 | { |
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153 | btVector3 absVec = this->absolute(); |
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154 | int maxIndex = absVec.maxAxis(); |
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155 | if (absVec[maxIndex]>0) |
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156 | { |
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157 | *this /= absVec[maxIndex]; |
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158 | return *this /= length(); |
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159 | } |
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160 | setValue(1,0,0); |
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161 | return *this; |
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162 | } |
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163 | |
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164 | /**@brief Normalize this vector |
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165 | * x^2 + y^2 + z^2 = 1 */ |
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166 | SIMD_FORCE_INLINE btVector3& normalize() |
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167 | { |
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168 | return *this /= length(); |
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169 | } |
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170 | |
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171 | /**@brief Return a normalized version of this vector */ |
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172 | SIMD_FORCE_INLINE btVector3 normalized() const; |
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173 | |
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174 | /**@brief Return a rotated version of this vector |
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175 | * @param wAxis The axis to rotate about |
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176 | * @param angle The angle to rotate by */ |
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177 | SIMD_FORCE_INLINE btVector3 rotate( const btVector3& wAxis, const btScalar angle ) const; |
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178 | |
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179 | /**@brief Return the angle between this and another vector |
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180 | * @param v The other vector */ |
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181 | SIMD_FORCE_INLINE btScalar angle(const btVector3& v) const |
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182 | { |
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183 | btScalar s = btSqrt(length2() * v.length2()); |
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184 | btFullAssert(s != btScalar(0.0)); |
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185 | return btAcos(dot(v) / s); |
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186 | } |
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187 | /**@brief Return a vector will the absolute values of each element */ |
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188 | SIMD_FORCE_INLINE btVector3 absolute() const |
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189 | { |
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190 | return btVector3( |
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191 | btFabs(m_floats[0]), |
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192 | btFabs(m_floats[1]), |
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193 | btFabs(m_floats[2])); |
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194 | } |
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195 | /**@brief Return the cross product between this and another vector |
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196 | * @param v The other vector */ |
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197 | SIMD_FORCE_INLINE btVector3 cross(const btVector3& v) const |
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198 | { |
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199 | return btVector3( |
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200 | m_floats[1] * v.m_floats[2] -m_floats[2] * v.m_floats[1], |
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201 | m_floats[2] * v.m_floats[0] - m_floats[0] * v.m_floats[2], |
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202 | m_floats[0] * v.m_floats[1] - m_floats[1] * v.m_floats[0]); |
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203 | } |
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204 | |
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205 | SIMD_FORCE_INLINE btScalar triple(const btVector3& v1, const btVector3& v2) const |
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206 | { |
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207 | return m_floats[0] * (v1.m_floats[1] * v2.m_floats[2] - v1.m_floats[2] * v2.m_floats[1]) + |
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208 | m_floats[1] * (v1.m_floats[2] * v2.m_floats[0] - v1.m_floats[0] * v2.m_floats[2]) + |
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209 | m_floats[2] * (v1.m_floats[0] * v2.m_floats[1] - v1.m_floats[1] * v2.m_floats[0]); |
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210 | } |
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211 | |
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212 | /**@brief Return the axis with the smallest value |
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213 | * Note return values are 0,1,2 for x, y, or z */ |
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214 | SIMD_FORCE_INLINE int minAxis() const |
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215 | { |
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216 | return m_floats[0] < m_floats[1] ? (m_floats[0] <m_floats[2] ? 0 : 2) : (m_floats[1] <m_floats[2] ? 1 : 2); |
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217 | } |
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218 | |
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219 | /**@brief Return the axis with the largest value |
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220 | * Note return values are 0,1,2 for x, y, or z */ |
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221 | SIMD_FORCE_INLINE int maxAxis() const |
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222 | { |
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223 | return m_floats[0] < m_floats[1] ? (m_floats[1] <m_floats[2] ? 2 : 1) : (m_floats[0] <m_floats[2] ? 2 : 0); |
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224 | } |
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225 | |
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226 | SIMD_FORCE_INLINE int furthestAxis() const |
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227 | { |
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228 | return absolute().minAxis(); |
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229 | } |
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230 | |
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231 | SIMD_FORCE_INLINE int closestAxis() const |
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232 | { |
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233 | return absolute().maxAxis(); |
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234 | } |
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235 | |
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236 | SIMD_FORCE_INLINE void setInterpolate3(const btVector3& v0, const btVector3& v1, btScalar rt) |
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237 | { |
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238 | btScalar s = btScalar(1.0) - rt; |
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239 | m_floats[0] = s * v0.m_floats[0] + rt * v1.m_floats[0]; |
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240 | m_floats[1] = s * v0.m_floats[1] + rt * v1.m_floats[1]; |
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241 | m_floats[2] = s * v0.m_floats[2] + rt * v1.m_floats[2]; |
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242 | //don't do the unused w component |
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243 | // m_co[3] = s * v0[3] + rt * v1[3]; |
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244 | } |
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245 | |
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246 | /**@brief Return the linear interpolation between this and another vector |
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247 | * @param v The other vector |
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248 | * @param t The ration of this to v (t = 0 => return this, t=1 => return other) */ |
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249 | SIMD_FORCE_INLINE btVector3 lerp(const btVector3& v, const btScalar& t) const |
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250 | { |
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251 | return btVector3(m_floats[0] + (v.m_floats[0] - m_floats[0]) * t, |
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252 | m_floats[1] + (v.m_floats[1] - m_floats[1]) * t, |
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253 | m_floats[2] + (v.m_floats[2] -m_floats[2]) * t); |
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254 | } |
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255 | |
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256 | /**@brief Elementwise multiply this vector by the other |
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257 | * @param v The other vector */ |
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258 | SIMD_FORCE_INLINE btVector3& operator*=(const btVector3& v) |
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259 | { |
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260 | m_floats[0] *= v.m_floats[0]; m_floats[1] *= v.m_floats[1];m_floats[2] *= v.m_floats[2]; |
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261 | return *this; |
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262 | } |
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263 | |
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264 | /**@brief Return the x value */ |
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265 | SIMD_FORCE_INLINE const btScalar& getX() const { return m_floats[0]; } |
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266 | /**@brief Return the y value */ |
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267 | SIMD_FORCE_INLINE const btScalar& getY() const { return m_floats[1]; } |
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268 | /**@brief Return the z value */ |
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269 | SIMD_FORCE_INLINE const btScalar& getZ() const { return m_floats[2]; } |
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270 | /**@brief Set the x value */ |
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271 | SIMD_FORCE_INLINE void setX(btScalar x) { m_floats[0] = x;}; |
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272 | /**@brief Set the y value */ |
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273 | SIMD_FORCE_INLINE void setY(btScalar y) { m_floats[1] = y;}; |
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274 | /**@brief Set the z value */ |
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275 | SIMD_FORCE_INLINE void setZ(btScalar z) {m_floats[2] = z;}; |
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276 | /**@brief Set the w value */ |
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277 | SIMD_FORCE_INLINE void setW(btScalar w) { m_floats[3] = w;}; |
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278 | /**@brief Return the x value */ |
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279 | SIMD_FORCE_INLINE const btScalar& x() const { return m_floats[0]; } |
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280 | /**@brief Return the y value */ |
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281 | SIMD_FORCE_INLINE const btScalar& y() const { return m_floats[1]; } |
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282 | /**@brief Return the z value */ |
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283 | SIMD_FORCE_INLINE const btScalar& z() const { return m_floats[2]; } |
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284 | /**@brief Return the w value */ |
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285 | SIMD_FORCE_INLINE const btScalar& w() const { return m_floats[3]; } |
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286 | |
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287 | //SIMD_FORCE_INLINE btScalar& operator[](int i) { return (&m_floats[0])[i]; } |
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288 | //SIMD_FORCE_INLINE const btScalar& operator[](int i) const { return (&m_floats[0])[i]; } |
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289 | ///operator btScalar*() replaces operator[], using implicit conversion. We added operator != and operator == to avoid pointer comparisons. |
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290 | SIMD_FORCE_INLINE operator btScalar *() { return &m_floats[0]; } |
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291 | SIMD_FORCE_INLINE operator const btScalar *() const { return &m_floats[0]; } |
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292 | |
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293 | SIMD_FORCE_INLINE bool operator==(const btVector3& other) const |
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294 | { |
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295 | return ((m_floats[3]==other.m_floats[3]) && (m_floats[2]==other.m_floats[2]) && (m_floats[1]==other.m_floats[1]) && (m_floats[0]==other.m_floats[0])); |
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296 | } |
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297 | |
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298 | SIMD_FORCE_INLINE bool operator!=(const btVector3& other) const |
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299 | { |
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300 | return !(*this == other); |
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301 | } |
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302 | |
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303 | /**@brief Set each element to the max of the current values and the values of another btVector3 |
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304 | * @param other The other btVector3 to compare with |
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305 | */ |
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306 | SIMD_FORCE_INLINE void setMax(const btVector3& other) |
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307 | { |
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308 | btSetMax(m_floats[0], other.m_floats[0]); |
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309 | btSetMax(m_floats[1], other.m_floats[1]); |
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310 | btSetMax(m_floats[2], other.m_floats[2]); |
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311 | btSetMax(m_floats[3], other.w()); |
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312 | } |
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313 | /**@brief Set each element to the min of the current values and the values of another btVector3 |
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314 | * @param other The other btVector3 to compare with |
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315 | */ |
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316 | SIMD_FORCE_INLINE void setMin(const btVector3& other) |
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317 | { |
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318 | btSetMin(m_floats[0], other.m_floats[0]); |
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319 | btSetMin(m_floats[1], other.m_floats[1]); |
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320 | btSetMin(m_floats[2], other.m_floats[2]); |
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321 | btSetMin(m_floats[3], other.w()); |
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322 | } |
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323 | |
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324 | SIMD_FORCE_INLINE void setValue(const btScalar& x, const btScalar& y, const btScalar& z) |
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325 | { |
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326 | m_floats[0]=x; |
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327 | m_floats[1]=y; |
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328 | m_floats[2]=z; |
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329 | m_floats[3] = btScalar(0.); |
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330 | } |
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331 | |
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332 | void getSkewSymmetricMatrix(btVector3* v0,btVector3* v1,btVector3* v2) const |
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333 | { |
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334 | v0->setValue(0. ,-z() ,y()); |
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335 | v1->setValue(z() ,0. ,-x()); |
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336 | v2->setValue(-y() ,x() ,0.); |
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337 | } |
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338 | |
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339 | void setZero() |
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340 | { |
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341 | setValue(btScalar(0.),btScalar(0.),btScalar(0.)); |
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342 | } |
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343 | |
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344 | SIMD_FORCE_INLINE bool isZero() const |
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345 | { |
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346 | return m_floats[0] == btScalar(0) && m_floats[1] == btScalar(0) && m_floats[2] == btScalar(0); |
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347 | } |
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348 | |
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349 | SIMD_FORCE_INLINE bool fuzzyZero() const |
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350 | { |
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351 | return length2() < SIMD_EPSILON; |
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352 | } |
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353 | |
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354 | SIMD_FORCE_INLINE void serialize(struct btVector3Data& dataOut) const; |
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355 | |
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356 | SIMD_FORCE_INLINE void deSerialize(const struct btVector3Data& dataIn); |
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357 | |
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358 | SIMD_FORCE_INLINE void serializeFloat(struct btVector3FloatData& dataOut) const; |
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359 | |
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360 | SIMD_FORCE_INLINE void deSerializeFloat(const struct btVector3FloatData& dataIn); |
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361 | |
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362 | SIMD_FORCE_INLINE void serializeDouble(struct btVector3DoubleData& dataOut) const; |
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363 | |
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364 | SIMD_FORCE_INLINE void deSerializeDouble(const struct btVector3DoubleData& dataIn); |
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365 | |
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366 | }; |
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367 | |
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368 | /**@brief Return the sum of two vectors (Point symantics)*/ |
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369 | SIMD_FORCE_INLINE btVector3 |
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370 | operator+(const btVector3& v1, const btVector3& v2) |
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371 | { |
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372 | return btVector3(v1.m_floats[0] + v2.m_floats[0], v1.m_floats[1] + v2.m_floats[1], v1.m_floats[2] + v2.m_floats[2]); |
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373 | } |
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374 | |
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375 | /**@brief Return the elementwise product of two vectors */ |
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376 | SIMD_FORCE_INLINE btVector3 |
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377 | operator*(const btVector3& v1, const btVector3& v2) |
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378 | { |
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379 | return btVector3(v1.m_floats[0] * v2.m_floats[0], v1.m_floats[1] * v2.m_floats[1], v1.m_floats[2] * v2.m_floats[2]); |
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380 | } |
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381 | |
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382 | /**@brief Return the difference between two vectors */ |
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383 | SIMD_FORCE_INLINE btVector3 |
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384 | operator-(const btVector3& v1, const btVector3& v2) |
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385 | { |
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386 | return btVector3(v1.m_floats[0] - v2.m_floats[0], v1.m_floats[1] - v2.m_floats[1], v1.m_floats[2] - v2.m_floats[2]); |
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387 | } |
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388 | /**@brief Return the negative of the vector */ |
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389 | SIMD_FORCE_INLINE btVector3 |
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390 | operator-(const btVector3& v) |
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391 | { |
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392 | return btVector3(-v.m_floats[0], -v.m_floats[1], -v.m_floats[2]); |
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393 | } |
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394 | |
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395 | /**@brief Return the vector scaled by s */ |
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396 | SIMD_FORCE_INLINE btVector3 |
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397 | operator*(const btVector3& v, const btScalar& s) |
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398 | { |
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399 | return btVector3(v.m_floats[0] * s, v.m_floats[1] * s, v.m_floats[2] * s); |
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400 | } |
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401 | |
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402 | /**@brief Return the vector scaled by s */ |
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403 | SIMD_FORCE_INLINE btVector3 |
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404 | operator*(const btScalar& s, const btVector3& v) |
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405 | { |
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406 | return v * s; |
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407 | } |
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408 | |
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409 | /**@brief Return the vector inversely scaled by s */ |
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410 | SIMD_FORCE_INLINE btVector3 |
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411 | operator/(const btVector3& v, const btScalar& s) |
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412 | { |
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413 | btFullAssert(s != btScalar(0.0)); |
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414 | return v * (btScalar(1.0) / s); |
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415 | } |
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416 | |
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417 | /**@brief Return the vector inversely scaled by s */ |
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418 | SIMD_FORCE_INLINE btVector3 |
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419 | operator/(const btVector3& v1, const btVector3& v2) |
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420 | { |
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421 | return btVector3(v1.m_floats[0] / v2.m_floats[0],v1.m_floats[1] / v2.m_floats[1],v1.m_floats[2] / v2.m_floats[2]); |
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422 | } |
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423 | |
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424 | /**@brief Return the dot product between two vectors */ |
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425 | SIMD_FORCE_INLINE btScalar |
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426 | btDot(const btVector3& v1, const btVector3& v2) |
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427 | { |
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428 | return v1.dot(v2); |
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429 | } |
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430 | |
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431 | |
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432 | /**@brief Return the distance squared between two vectors */ |
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433 | SIMD_FORCE_INLINE btScalar |
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434 | btDistance2(const btVector3& v1, const btVector3& v2) |
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435 | { |
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436 | return v1.distance2(v2); |
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437 | } |
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438 | |
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439 | |
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440 | /**@brief Return the distance between two vectors */ |
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441 | SIMD_FORCE_INLINE btScalar |
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442 | btDistance(const btVector3& v1, const btVector3& v2) |
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443 | { |
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444 | return v1.distance(v2); |
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445 | } |
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446 | |
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447 | /**@brief Return the angle between two vectors */ |
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448 | SIMD_FORCE_INLINE btScalar |
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449 | btAngle(const btVector3& v1, const btVector3& v2) |
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450 | { |
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451 | return v1.angle(v2); |
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452 | } |
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453 | |
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454 | /**@brief Return the cross product of two vectors */ |
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455 | SIMD_FORCE_INLINE btVector3 |
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456 | btCross(const btVector3& v1, const btVector3& v2) |
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457 | { |
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458 | return v1.cross(v2); |
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459 | } |
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460 | |
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461 | SIMD_FORCE_INLINE btScalar |
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462 | btTriple(const btVector3& v1, const btVector3& v2, const btVector3& v3) |
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463 | { |
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464 | return v1.triple(v2, v3); |
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465 | } |
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466 | |
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467 | /**@brief Return the linear interpolation between two vectors |
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468 | * @param v1 One vector |
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469 | * @param v2 The other vector |
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470 | * @param t The ration of this to v (t = 0 => return v1, t=1 => return v2) */ |
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471 | SIMD_FORCE_INLINE btVector3 |
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472 | lerp(const btVector3& v1, const btVector3& v2, const btScalar& t) |
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473 | { |
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474 | return v1.lerp(v2, t); |
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475 | } |
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476 | |
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477 | |
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478 | |
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479 | SIMD_FORCE_INLINE btScalar btVector3::distance2(const btVector3& v) const |
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480 | { |
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481 | return (v - *this).length2(); |
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482 | } |
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483 | |
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484 | SIMD_FORCE_INLINE btScalar btVector3::distance(const btVector3& v) const |
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485 | { |
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486 | return (v - *this).length(); |
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487 | } |
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488 | |
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489 | SIMD_FORCE_INLINE btVector3 btVector3::normalized() const |
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490 | { |
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491 | return *this / length(); |
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492 | } |
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493 | |
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494 | SIMD_FORCE_INLINE btVector3 btVector3::rotate( const btVector3& wAxis, const btScalar angle ) const |
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495 | { |
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496 | // wAxis must be a unit lenght vector |
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497 | |
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498 | btVector3 o = wAxis * wAxis.dot( *this ); |
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499 | btVector3 x = *this - o; |
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500 | btVector3 y; |
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501 | |
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502 | y = wAxis.cross( *this ); |
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503 | |
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504 | return ( o + x * btCos( angle ) + y * btSin( angle ) ); |
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505 | } |
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506 | |
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507 | class btVector4 : public btVector3 |
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508 | { |
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509 | public: |
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510 | |
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511 | SIMD_FORCE_INLINE btVector4() {} |
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512 | |
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513 | |
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514 | SIMD_FORCE_INLINE btVector4(const btScalar& x, const btScalar& y, const btScalar& z,const btScalar& w) |
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515 | : btVector3(x,y,z) |
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516 | { |
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517 | m_floats[3] = w; |
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518 | } |
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519 | |
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520 | |
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521 | SIMD_FORCE_INLINE btVector4 absolute4() const |
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522 | { |
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523 | return btVector4( |
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524 | btFabs(m_floats[0]), |
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525 | btFabs(m_floats[1]), |
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526 | btFabs(m_floats[2]), |
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527 | btFabs(m_floats[3])); |
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528 | } |
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529 | |
---|
530 | |
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531 | |
---|
532 | btScalar getW() const { return m_floats[3];} |
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533 | |
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534 | |
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535 | SIMD_FORCE_INLINE int maxAxis4() const |
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536 | { |
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537 | int maxIndex = -1; |
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538 | btScalar maxVal = btScalar(-BT_LARGE_FLOAT); |
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539 | if (m_floats[0] > maxVal) |
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540 | { |
---|
541 | maxIndex = 0; |
---|
542 | maxVal = m_floats[0]; |
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543 | } |
---|
544 | if (m_floats[1] > maxVal) |
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545 | { |
---|
546 | maxIndex = 1; |
---|
547 | maxVal = m_floats[1]; |
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548 | } |
---|
549 | if (m_floats[2] > maxVal) |
---|
550 | { |
---|
551 | maxIndex = 2; |
---|
552 | maxVal =m_floats[2]; |
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553 | } |
---|
554 | if (m_floats[3] > maxVal) |
---|
555 | { |
---|
556 | maxIndex = 3; |
---|
557 | maxVal = m_floats[3]; |
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558 | } |
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559 | |
---|
560 | |
---|
561 | |
---|
562 | |
---|
563 | return maxIndex; |
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564 | |
---|
565 | } |
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566 | |
---|
567 | |
---|
568 | SIMD_FORCE_INLINE int minAxis4() const |
---|
569 | { |
---|
570 | int minIndex = -1; |
---|
571 | btScalar minVal = btScalar(BT_LARGE_FLOAT); |
---|
572 | if (m_floats[0] < minVal) |
---|
573 | { |
---|
574 | minIndex = 0; |
---|
575 | minVal = m_floats[0]; |
---|
576 | } |
---|
577 | if (m_floats[1] < minVal) |
---|
578 | { |
---|
579 | minIndex = 1; |
---|
580 | minVal = m_floats[1]; |
---|
581 | } |
---|
582 | if (m_floats[2] < minVal) |
---|
583 | { |
---|
584 | minIndex = 2; |
---|
585 | minVal =m_floats[2]; |
---|
586 | } |
---|
587 | if (m_floats[3] < minVal) |
---|
588 | { |
---|
589 | minIndex = 3; |
---|
590 | minVal = m_floats[3]; |
---|
591 | } |
---|
592 | |
---|
593 | return minIndex; |
---|
594 | |
---|
595 | } |
---|
596 | |
---|
597 | |
---|
598 | SIMD_FORCE_INLINE int closestAxis4() const |
---|
599 | { |
---|
600 | return absolute4().maxAxis4(); |
---|
601 | } |
---|
602 | |
---|
603 | |
---|
604 | |
---|
605 | |
---|
606 | /**@brief Set x,y,z and zero w |
---|
607 | * @param x Value of x |
---|
608 | * @param y Value of y |
---|
609 | * @param z Value of z |
---|
610 | */ |
---|
611 | |
---|
612 | |
---|
613 | /* void getValue(btScalar *m) const |
---|
614 | { |
---|
615 | m[0] = m_floats[0]; |
---|
616 | m[1] = m_floats[1]; |
---|
617 | m[2] =m_floats[2]; |
---|
618 | } |
---|
619 | */ |
---|
620 | /**@brief Set the values |
---|
621 | * @param x Value of x |
---|
622 | * @param y Value of y |
---|
623 | * @param z Value of z |
---|
624 | * @param w Value of w |
---|
625 | */ |
---|
626 | SIMD_FORCE_INLINE void setValue(const btScalar& x, const btScalar& y, const btScalar& z,const btScalar& w) |
---|
627 | { |
---|
628 | m_floats[0]=x; |
---|
629 | m_floats[1]=y; |
---|
630 | m_floats[2]=z; |
---|
631 | m_floats[3]=w; |
---|
632 | } |
---|
633 | |
---|
634 | |
---|
635 | }; |
---|
636 | |
---|
637 | |
---|
638 | ///btSwapVector3Endian swaps vector endianness, useful for network and cross-platform serialization |
---|
639 | SIMD_FORCE_INLINE void btSwapScalarEndian(const btScalar& sourceVal, btScalar& destVal) |
---|
640 | { |
---|
641 | #ifdef BT_USE_DOUBLE_PRECISION |
---|
642 | unsigned char* dest = (unsigned char*) &destVal; |
---|
643 | unsigned char* src = (unsigned char*) &sourceVal; |
---|
644 | dest[0] = src[7]; |
---|
645 | dest[1] = src[6]; |
---|
646 | dest[2] = src[5]; |
---|
647 | dest[3] = src[4]; |
---|
648 | dest[4] = src[3]; |
---|
649 | dest[5] = src[2]; |
---|
650 | dest[6] = src[1]; |
---|
651 | dest[7] = src[0]; |
---|
652 | #else |
---|
653 | unsigned char* dest = (unsigned char*) &destVal; |
---|
654 | unsigned char* src = (unsigned char*) &sourceVal; |
---|
655 | dest[0] = src[3]; |
---|
656 | dest[1] = src[2]; |
---|
657 | dest[2] = src[1]; |
---|
658 | dest[3] = src[0]; |
---|
659 | #endif //BT_USE_DOUBLE_PRECISION |
---|
660 | } |
---|
661 | ///btSwapVector3Endian swaps vector endianness, useful for network and cross-platform serialization |
---|
662 | SIMD_FORCE_INLINE void btSwapVector3Endian(const btVector3& sourceVec, btVector3& destVec) |
---|
663 | { |
---|
664 | for (int i=0;i<4;i++) |
---|
665 | { |
---|
666 | btSwapScalarEndian(sourceVec[i],destVec[i]); |
---|
667 | } |
---|
668 | |
---|
669 | } |
---|
670 | |
---|
671 | ///btUnSwapVector3Endian swaps vector endianness, useful for network and cross-platform serialization |
---|
672 | SIMD_FORCE_INLINE void btUnSwapVector3Endian(btVector3& vector) |
---|
673 | { |
---|
674 | |
---|
675 | btVector3 swappedVec; |
---|
676 | for (int i=0;i<4;i++) |
---|
677 | { |
---|
678 | btSwapScalarEndian(vector[i],swappedVec[i]); |
---|
679 | } |
---|
680 | vector = swappedVec; |
---|
681 | } |
---|
682 | |
---|
683 | template <class T> |
---|
684 | SIMD_FORCE_INLINE void btPlaneSpace1 (const T& n, T& p, T& q) |
---|
685 | { |
---|
686 | if (btFabs(n[2]) > SIMDSQRT12) { |
---|
687 | // choose p in y-z plane |
---|
688 | btScalar a = n[1]*n[1] + n[2]*n[2]; |
---|
689 | btScalar k = btRecipSqrt (a); |
---|
690 | p[0] = 0; |
---|
691 | p[1] = -n[2]*k; |
---|
692 | p[2] = n[1]*k; |
---|
693 | // set q = n x p |
---|
694 | q[0] = a*k; |
---|
695 | q[1] = -n[0]*p[2]; |
---|
696 | q[2] = n[0]*p[1]; |
---|
697 | } |
---|
698 | else { |
---|
699 | // choose p in x-y plane |
---|
700 | btScalar a = n[0]*n[0] + n[1]*n[1]; |
---|
701 | btScalar k = btRecipSqrt (a); |
---|
702 | p[0] = -n[1]*k; |
---|
703 | p[1] = n[0]*k; |
---|
704 | p[2] = 0; |
---|
705 | // set q = n x p |
---|
706 | q[0] = -n[2]*p[1]; |
---|
707 | q[1] = n[2]*p[0]; |
---|
708 | q[2] = a*k; |
---|
709 | } |
---|
710 | } |
---|
711 | |
---|
712 | |
---|
713 | struct btVector3FloatData |
---|
714 | { |
---|
715 | float m_floats[4]; |
---|
716 | }; |
---|
717 | |
---|
718 | struct btVector3DoubleData |
---|
719 | { |
---|
720 | double m_floats[4]; |
---|
721 | |
---|
722 | }; |
---|
723 | |
---|
724 | SIMD_FORCE_INLINE void btVector3::serializeFloat(struct btVector3FloatData& dataOut) const |
---|
725 | { |
---|
726 | ///could also do a memcpy, check if it is worth it |
---|
727 | for (int i=0;i<4;i++) |
---|
728 | dataOut.m_floats[i] = float(m_floats[i]); |
---|
729 | } |
---|
730 | |
---|
731 | SIMD_FORCE_INLINE void btVector3::deSerializeFloat(const struct btVector3FloatData& dataIn) |
---|
732 | { |
---|
733 | for (int i=0;i<4;i++) |
---|
734 | m_floats[i] = btScalar(dataIn.m_floats[i]); |
---|
735 | } |
---|
736 | |
---|
737 | |
---|
738 | SIMD_FORCE_INLINE void btVector3::serializeDouble(struct btVector3DoubleData& dataOut) const |
---|
739 | { |
---|
740 | ///could also do a memcpy, check if it is worth it |
---|
741 | for (int i=0;i<4;i++) |
---|
742 | dataOut.m_floats[i] = double(m_floats[i]); |
---|
743 | } |
---|
744 | |
---|
745 | SIMD_FORCE_INLINE void btVector3::deSerializeDouble(const struct btVector3DoubleData& dataIn) |
---|
746 | { |
---|
747 | for (int i=0;i<4;i++) |
---|
748 | m_floats[i] = btScalar(dataIn.m_floats[i]); |
---|
749 | } |
---|
750 | |
---|
751 | |
---|
752 | SIMD_FORCE_INLINE void btVector3::serialize(struct btVector3Data& dataOut) const |
---|
753 | { |
---|
754 | ///could also do a memcpy, check if it is worth it |
---|
755 | for (int i=0;i<4;i++) |
---|
756 | dataOut.m_floats[i] = m_floats[i]; |
---|
757 | } |
---|
758 | |
---|
759 | SIMD_FORCE_INLINE void btVector3::deSerialize(const struct btVector3Data& dataIn) |
---|
760 | { |
---|
761 | for (int i=0;i<4;i++) |
---|
762 | m_floats[i] = dataIn.m_floats[i]; |
---|
763 | } |
---|
764 | |
---|
765 | |
---|
766 | #endif //BT_VECTOR3_H |
---|