Question

如果不弄乱旋转，很容易将精灵对象相对于另一个精灵对象定位。正如标题所述，我想知道如何将2 MC相对于已经旋转的MC定位，因此它们彼此对齐。大火箭的角度为35度。

首先我将大火箭的角度设置为0度，我在舞台上添加2个小火箭，并将它们放置在较大火箭的两侧。到目前为止一切都那么好......我正在将所有东西都旋转回初始角度（35度），但有些东西是不对的，因为你可以在pic1中看到结果

我必须改变什么，以便2个小型火箭保持完全对齐（一个在左侧，另一个在较大火箭的右侧）并旋转，如图2所示？

所有对象的注册点位于左上角。

编辑：2枚小火箭必须位于较大的火箭集装箱外，因为最终它们将独立于集装箱进行动画制作。

var _rot = rocketShip.rotation;
rocketShip.rotation = 0;
addChild(_leftRocket);
addChild(_rightRocket);
_leftRocket.x = rocketShip.x - _leftRocket.width;
_leftRocket.y = rocketShip.y + 20;
_rightRocket.y = rocketShip.x + _rightRocket.width;
_rightRocket.y = rocketShip.y + 20;
rocketShip.rotation = _rot;
_leftRocket.rotation = _rightRocket.rotation = rocketShip.rotation;

Answer 1

尝试在旋转后将_leftRocket和_rightRocket移动到正确的位置。

这是代码move _leftRocket

//the old left bottom point of rocketShip
var point1:Point= new Point(0, rocketShip.height);

//the old right-bottom poiny of leftship
var point2:Point = new point(_leftRocket.width, _leftRocket.height);

//the old right bottom point of rocketShip
var point5:Point= new Point(rocketShip.width, rocketShip.height);

//the old left-bottom point of rightship's 
var point6:Point = new point(0, _leftRocket.height);

//.. Your code


//get the new position of rocketship's left bottom point after rotation,leftShip's right bottom corner will be in this point
var point3:Point =  rocketShip.transform.matrix.transformPoint(point1);

//get the new  point of leftship's right-bottom-corner after rotation.
var point4:Point =  _leftRocket.transform.matrix.transformPoint(point2);

//move the leftShip
_leftRocket.x -= point4.x - point3.x;
_leftRocket.y -= point4.y - point3.y;

这里是右船

//get the new position of right bottom point  of rocketShip after rotation,rightShip's left bottom corner will be in this point
var point7:Point =  rocketShip.transform.matrix.transformPoint(point5);

//get the new  point of rightship's left-bottom-corner after rotation.
var point8:Point =  _rightRocket.transform.matrix.transformPoint(point6);

//move the rightShip
_rightRocket.x -= point8.x - point7.x;
_rightRocket.y -= point8.y - point7.y;

而且我认为你应该改变

 _rightRocket.y = rocketShip.x + _rightRocket.width;

到

 _rightRocket.x = rocketShip.x + rocketShip.width;

如何定位旋转的MovieClip？

1 个答案: