好的，所以我读了很多关于这方面的东西，而且它变得重复了，但没有一个能解决我的问题，或者它对我来说太难理解了。我试图让一个男人的精灵，从上到下看着他，盯着鼠标在页面中的任何位置。然而，他并没有在符号中心旋转他的头部，而是在他的精灵的左上角旋转。有什么帮助吗？
stage.addEventListener("mouseMove", eyesFollow);
function eyesFollow(e:MouseEvent):void {
var a = mouseY - man_walking.y;
var b = mouseX - man_walking.x;
var radians = Math.atan2(a,b);
var degrees = ((180/Math.PI)*radians)+90;
man_walking.rotation = (degrees);
}
注意：最适合我的一个帖子有一个解决方案，它只是一个断开的链接，所以我无法访问它。
在 Flash Pro 中，您可以简单地定位符号，使0,0坐标是您希望旋转的点：
Yahoo Astra有一个动态注册类，用于围绕一个点旋转。
这可以实现如下，围绕100,100旋转：
DynamicRegistration.rotate(man_walking, new Point(100, 100), degrees);
Yahoo Astra DynamicRegistration 类：
/*
Copyright (c) 2008 Yahoo! Inc. All rights reserved.
The copyrights embodied in the content of this file are licensed under the BSD (revised) open source license
*/
package com.yahoo.astra.utils
{
import flash.geom.Point;
import flash.display.DisplayObject;
/**
* Allows you to manipulate display objects based on a registration point other
* than the standard (0,0).
*
* @author Josh Tynjala
*/
public class DynamicRegistration
{
/**
* Moves a <code>DisplayObject</code> to a new position (x,y) based on a registration point. The
* true position of the object will be (x - registration.x, y - registration.y).
*
* @param target the DisplayObject to move
* @param registration the registration point of the DisplayObject
* @param x the new x position, in pixels
* @param y the new y position, in pixels
*/
public static function move(target:DisplayObject, registration:Point, x:Number = 0, y:Number = 0):void
{
//generate the location of the registration point in the parent
registration = target.localToGlobal(registration);
registration = target.parent.globalToLocal(registration);
//move the target and offset by the registration point
target.x += x - registration.x;
target.y += y - registration.y;
}
/**
* Rotates a <code>DisplayObject</code> based on a registration point.
*
* @param target the DisplayObject to move
* @param registration the registration point of the DisplayObject
* @param rotation the new rotation angle
*/
public static function rotate(target:DisplayObject, registration:Point, degrees:Number = 0):void
{
changePropertyOnRegistrationPoint(target, registration, "rotation", degrees);
}
/**
* Scales a <code>DisplayObject</code> based on a registration point.
*
* @param target the DisplayObject to move
* @param registration the registration point of the DisplayObject
* @param scaleX the new x scaling factor
* @param scaleY the new y scaling factor
*/
public static function scale(target:DisplayObject, registration:Point, scaleX:Number = 0, scaleY:Number = 0):void
{
changePropertyOnRegistrationPoint(target, registration, "scaleX", scaleX);
changePropertyOnRegistrationPoint(target, registration, "scaleY", scaleY);
}
/**
* @private
* Alters an arbitary property based on the registration point.
*
* @param target the DisplayObject to move
* @param registration the registration point of the DisplayObject
* @param propertyName the property to change
* @param value the new value of the property to change
*/
private static function changePropertyOnRegistrationPoint(target:DisplayObject, registration:Point, propertyName:String, value:Number):void
{
//generate the location of the registration point in the parent
var a:Point = registration.clone();
a = target.localToGlobal(a);
a = target.parent.globalToLocal(a);
target[propertyName] = value;
//after the property change, regenerate the location of the registration
//point in the parent
var b:Point = registration.clone();
b = target.localToGlobal(b);
b = target.parent.globalToLocal(b);
//move the target based on the difference to make it appear the change
//happened based on the registration point
target.x -= b.x - a.x;
target.y -= b.y - a.y;
}
}
}
假设精灵的 (x, y) 位置在左上角，高级 Lua-ish 伪代码（抱歉，我不太熟悉 Actionscript）中的一般过程将是：
function rotate()
-- ...find how much you want to rotate...
-- Translate the middle point to (0, 0)
man.translate(-(man.x + man.width/2), -(man.y + man.height/2))
-- Rotate it there.
man.rotate(someTranslation)
-- Lastly, move it back to where it was
man.translate((man.x + man.width/2), (man.y + man.height/2))
end
如果您的图书馆使用不同的计算位置和原点的方法，您需要调整需要翻译的数量，但要点仍然存在：首先翻译图像，使其中间位于 (0,0 )，旋转它，然后将其移回。
我希望这有帮助！:)
尝试这个？
stage.addEventListener("mouseMove", eyesFollow);
var cw:Number = man_walking.width/2,
ch:Number = man_walking.height/2;
function eyesFollow(e:MouseEvent):void {
var a = mouseY - man_walking.y;
var b = mouseX - man_walking.x;
var radians = Math.atan2(a,b);
var degrees = ((180/Math.PI)*radians)+90;
var A:Point=man_walking.parent.globalToLocal(man_walking.localToGlobal(new Point(cw,ch)));
man_walking.rotation = (degrees);
var B:Point=man_walking.parent.globalToLocal(man_walking.localToGlobal(new Point(cw,ch)));
man_walking.y+=A.y - B.y;
man_walking.x+=A.x - B.x;
}