初始化

cocos2d-x/cocos/math/Quaternion.inl

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+/**
+ Copyright 2013 BlackBerry Inc.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+ Original file from GamePlay3D: http://gameplay3d.org
+
+ This file was modified to fit the cocos2d-x project
+ */
+
+#include "math/Quaternion.h"
+
+NS_CC_MATH_BEGIN
+
+inline const Quaternion Quaternion::operator*(const Quaternion& q) const
+{
+    Quaternion result(*this);
+    result.multiply(q);
+    return result;
+}
+
+inline Quaternion& Quaternion::operator*=(const Quaternion& q)
+{
+    multiply(q);
+    return *this;
+}
+
+inline Vec3 Quaternion::operator*(const Vec3& v) const
+{
+    Vec3 uv, uuv;
+    Vec3 qvec(x, y, z);
+    Vec3::cross(qvec, v, &uv);
+    Vec3::cross(qvec, uv, &uuv);
+
+    uv *= (2.0f * w);
+    uuv *= 2.0f;
+
+    return v + uv + uuv;
+}
+
+NS_CC_MATH_END