Vector3类 参考

Public 成员函数
	Vector3 (float scalar)
	Vector3 (float a, float b, float c)
void	setX (float value)
float	getX ()
void	setY (float value)
float	getY ()
void	setZ (float value)
float	getZ ()
Vector3	clone ()
void	add (Vector3 v)
void	sub (Vector3 v)
void	applyMatrix4 (Matrix4 trf)
void	applyMatrix4d (Matrix4d trf)
void	multiplyScalar (float scalar)
void	normalize ()
Vector3	normalized ()
float	length ()
float	distanceTo (Vector3 v)
float	angleTo (Vector3 v)
float	orientedAngle (Vector3 v, Vector3 ref)
float	dot (Vector3 v)
Vector3	cross (Vector3 v)