fromDualQuaternion fromMatrix getPosition getRotation inverse invert isIdentity m_Pos m_Rot move multVec operator!= operator* operator*= operator= operator== Placement Placement Placement Placement Placement pow sclerp setPosition setRotation slerp toDualQuaternion toMatrix ~Placement

getPosition() const Vector3d & getPosition ( ) const 获取当前位置 获取 Placement 对象的当前位置。 返回 当前位置