| 69 |  |  | 
| 70 |  | /** Constructs and initializes a Quaternion from w, x, y, z values */ | 
| 71 |  | Quaternion(Real w, Real x, Real y, Real z) { | 
| 72 | < | data_[0] = w; | 
| 73 | < | data_[1] = x; | 
| 74 | < | data_[2] = y; | 
| 75 | < | data_[3] = z; | 
| 72 | > | this->data_[0] = w; | 
| 73 | > | this->data_[1] = x; | 
| 74 | > | this->data_[2] = y; | 
| 75 | > | this->data_[3] = z; | 
| 76 |  | } | 
| 77 |  |  | 
| 78 |  | /** Constructs and initializes a Quaternion from a  Vector<Real,4> */ | 
| 95 |  | * @return the value of the first element of this quaternion | 
| 96 |  | */ | 
| 97 |  | Real w() const { | 
| 98 | < | return data_[0]; | 
| 98 | > | return this->data_[0]; | 
| 99 |  | } | 
| 100 |  |  | 
| 101 |  | /** | 
| 103 |  | * @return the reference of the first element of this quaternion | 
| 104 |  | */ | 
| 105 |  | Real& w() { | 
| 106 | < | return data_[0]; | 
| 106 | > | return this->data_[0]; | 
| 107 |  | } | 
| 108 |  |  | 
| 109 |  | /** | 
| 111 |  | * @return the value of the first element of this quaternion | 
| 112 |  | */ | 
| 113 |  | Real x() const { | 
| 114 | < | return data_[1]; | 
| 114 | > | return this->data_[1]; | 
| 115 |  | } | 
| 116 |  |  | 
| 117 |  | /** | 
| 119 |  | * @return the reference of the second element of this quaternion | 
| 120 |  | */ | 
| 121 |  | Real& x() { | 
| 122 | < | return data_[1]; | 
| 122 | > | return this->data_[1]; | 
| 123 |  | } | 
| 124 |  |  | 
| 125 |  | /** | 
| 127 |  | * @return the value of the third element of this quaternion | 
| 128 |  | */ | 
| 129 |  | Real y() const { | 
| 130 | < | return data_[2]; | 
| 130 | > | return this->data_[2]; | 
| 131 |  | } | 
| 132 |  |  | 
| 133 |  | /** | 
| 135 |  | * @return the reference of the third element of this quaternion | 
| 136 |  | */ | 
| 137 |  | Real& y() { | 
| 138 | < | return data_[2]; | 
| 138 | > | return this->data_[2]; | 
| 139 |  | } | 
| 140 |  |  | 
| 141 |  | /** | 
| 143 |  | * @return the value of the fourth element of this quaternion | 
| 144 |  | */ | 
| 145 |  | Real z() const { | 
| 146 | < | return data_[3]; | 
| 146 | > | return this->data_[3]; | 
| 147 |  | } | 
| 148 |  | /** | 
| 149 |  | * Returns the reference of the fourth element of this quaternion. | 
| 150 |  | * @return the reference of the fourth element of this quaternion | 
| 151 |  | */ | 
| 152 |  | Real& z() { | 
| 153 | < | return data_[3]; | 
| 153 | > | return this->data_[3]; | 
| 154 |  | } | 
| 155 |  |  | 
| 156 |  | /** | 
| 161 |  | inline bool operator ==(const Quaternion<Real>& q) { | 
| 162 |  |  | 
| 163 |  | for (unsigned int i = 0; i < 4; i ++) { | 
| 164 | < | if (!equal(data_[i], q[i])) { | 
| 164 | > | if (!equal(this->data_[i], q[i])) { | 
| 165 |  | return false; | 
| 166 |  | } | 
| 167 |  | } | 
| 194 |  | void mul(const Quaternion<Real>& q) { | 
| 195 |  | Quaternion<Real> tmp(*this); | 
| 196 |  |  | 
| 197 | < | data_[0] = (tmp[0]*q[0]) -(tmp[1]*q[1]) - (tmp[2]*q[2]) - (tmp[3]*q[3]); | 
| 198 | < | data_[1] = (tmp[0]*q[1]) + (tmp[1]*q[0]) + (tmp[2]*q[3]) - (tmp[3]*q[2]); | 
| 199 | < | data_[2] = (tmp[0]*q[2]) + (tmp[2]*q[0]) + (tmp[3]*q[1]) - (tmp[1]*q[3]); | 
| 200 | < | data_[3] = (tmp[0]*q[3]) + (tmp[3]*q[0]) + (tmp[1]*q[2]) - (tmp[2]*q[1]); | 
| 197 | > | this->data_[0] = (tmp[0]*q[0]) -(tmp[1]*q[1]) - (tmp[2]*q[2]) - (tmp[3]*q[3]); | 
| 198 | > | this->data_[1] = (tmp[0]*q[1]) + (tmp[1]*q[0]) + (tmp[2]*q[3]) - (tmp[3]*q[2]); | 
| 199 | > | this->data_[2] = (tmp[0]*q[2]) + (tmp[2]*q[0]) + (tmp[3]*q[1]) - (tmp[1]*q[3]); | 
| 200 | > | this->data_[3] = (tmp[0]*q[3]) + (tmp[3]*q[0]) + (tmp[1]*q[2]) - (tmp[2]*q[1]); | 
| 201 |  | } | 
| 202 |  |  | 
| 203 |  | void mul(const Real& s) { | 
| 204 | < | data_[0] *= s; | 
| 205 | < | data_[1] *= s; | 
| 206 | < | data_[2] *= s; | 
| 207 | < | data_[3] *= s; | 
| 204 | > | this->data_[0] *= s; | 
| 205 | > | this->data_[1] *= s; | 
| 206 | > | this->data_[2] *= s; | 
| 207 | > | this->data_[3] *= s; | 
| 208 |  | } | 
| 209 |  |  | 
| 210 |  | /** Set the value of this quaternion to the division of itself by another quaternion */ | 
| 213 |  | } | 
| 214 |  |  | 
| 215 |  | void div(const Real& s) { | 
| 216 | < | data_[0] /= s; | 
| 217 | < | data_[1] /= s; | 
| 218 | < | data_[2] /= s; | 
| 219 | < | data_[3] /= s; | 
| 216 | > | this->data_[0] /= s; | 
| 217 | > | this->data_[1] /= s; | 
| 218 | > | this->data_[2] /= s; | 
| 219 | > | this->data_[3] /= s; | 
| 220 |  | } | 
| 221 |  |  | 
| 222 |  | Quaternion<Real>& operator *=(const Quaternion<Real>& q) { | 
| 258 |  | Real y2; | 
| 259 |  | Real z2; | 
| 260 |  |  | 
| 261 | < | if (!isNormalized()) | 
| 262 | < | normalize(); | 
| 261 | > | if (!this->isNormalized()) | 
| 262 | > | this->normalize(); | 
| 263 |  |  | 
| 264 |  | w2 = w() * w(); | 
| 265 |  | x2 = x() * x(); |