最近有客户提了一个网元动态旋转的需求，用TWaver实现起来还是很方便的，效果如下图所示：
主要实现功能：
1:网元动态旋转
2:网元选中效果，被选中网元快速转到最前端后停止旋转，取消选中自动重启旋转
3:根据鼠标位置自动调整旋转方向
4:可以在程序中修改fw/bw/fh/bh调整图片显示效果。
代码如下所示：
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="absolute"
creationComplete="test()"
width="100%"
height="100%"
xmlns:ns="http://www.servasoftware.com/2009/twaver/flex">
<mx:Script>
<![CDATA[
import mx.events.ResizeEvent;
import twaver.Collection;
import twaver.Consts;
import twaver.ElementBox;
import twaver.IData;
import twaver.IElement;
import twaver.Layer;
import twaver.Node;
import twaver.SelectionChangeEvent;
import twaver.SelectionModel;
import twaver.Styles;
import twaver.SubNetwork;
import twaver.Utils;
import twaver.core.util.l.u;
private var box:ElementBox = new ElementBox();
private var _rotationList:Collection = new Collection();
private var rectIndexMap:Object = {};
private var indexRectMap:Object = {};
private var rList:Collection = new Collection();
private var _startAngle:Number = 90;
private var timer:Timer;
private var _selectNode:Node;
private var _clockSise:Boolean = false;
private var _stopAngle:Number = 0;
private var _needStop:Boolean = false;
[Embed(source="images/1.png")]
public static const p1:Class;
[Embed(source="images/2.png")]
public static const p2:Class;
[Embed(source="images/3.png")]
public static const p3:Class;
[Embed(source="images/4.png")]
public static const p4:Class;
[Embed(source="images/5.png")]
public static const p5:Class;
[Embed(source="images/6.png")]
public static const p6:Class;
[Embed(source="images/7.png")]
public static const p7:Class;
[Embed(source="images/8.png")]
public static const p8:Class;
public function get clockSise():Boolean
{
return _clockSise;
}
public function set clockSise(value:Boolean):void
{
if(this.clockSise==value){
return;
}
_clockSise = value;
}
private function resetClockSize( point:Point):void {
if (_needStop == true) {
return;
}
if (point.x > this.network.width / 2) {
clockSise = false;
} else {
clockSise = true;
}
}
public function get selectNode():Node
{
return _selectNode;
}
public function set selectNode(value:Node):void
{
if(this.selectNode==value){
return;
}
_selectNode = value;
if(this.selectNode==null){
_needStop = false;
timer.delay = 30;
if(!timer.running){
timer.start();
}
}else{
var rect:Rectangle = indexRectMap[this.selectNode] as Rectangle;
var left:Boolean = (rect.x+rect.width/2)<network.width/2;
if(left){
clockSise = false;
}else{
clockSise = true;
}
var index:int = rotationList.getItemIndex(this.selectNode);
var size:int = this.rotationList.count;
var step:Number = 360/size;
_stopAngle = 90 - index * step;
_needStop = true;
timer.delay = 5;
if(!timer.running){
timer.start();
}
}
}
public function start():void{
timer.start();
}
public function stop():void{
if(timer!=null){
timer.stop();
}
}
public function get startAngle():Number
{
return _startAngle;
}
public function set startAngle(value:Number):void
{
_startAngle = (value+360)%360;
this.measureRotation();
}
public function get rotationList():Collection
{
return _rotationList;
}
public function set rotationList(value:Collection):void
{
_rotationList = value;
this.box.layerBox.clear();
var size:int = this.rotationList.count;
for(var i:int = 0;i<size;i++){
var l:Layer = new Layer("r:"+i);
box.layerBox.add(l);
}
this.measureRotation();
}
private function measureRotation():void{
rectIndexMap = {};
indexRectMap = {};
rList.clear();
var size:int = this.rotationList.count;
if(size==0){
return;
}
var w:Number = this.network.width;
var h:Number = this.network.height;
var fw:Number = 1.0 / 3 * w;
var bw:Number = 1.0 / 6 * w;
var fh:Number = h / 2.5;
var bh:Number = h / 7.0;
var m:Number = (fw - bw) / 4;
var cw:Number = m * 2 + bw;
var halfcw:Number = cw / 2;
var x:Number = halfcw + 15;
w = w - halfcw * 2 - 30;
var y:Number = bh / 2 + 10;
h = h - fh / 2 - bh / 2 - 20;
var step:Number = 360.0 / size;
for(var i:int = 0;i<size;i++){
var n:Node = this.rotationList.getItemAt(i) as Node;
var p:Point = this.getPointAtEllipse(x,y,w,h,startAngle+step*i);
var px:Number = p.x;
var py:Number = p.y;
var pm:Number = (py - y) / h * (fw - bw) / 2;
var ww:Number = pm * 2 + bw;
var hh:Number = (py - y) / h * (fh - bh) + bh;
var rect:Rectangle = new Rectangle(px - ww / 2, py - hh / 2, ww, hh);
n.setSize(rect.width,rect.height);
n.setCenterLocation(px,py);
rectIndexMap[rect] = n;
indexRectMap[n] = rect;
rList.addItem(rect);
}
rList.sort(rectSort);
for(var j:int = 0;j<size;j++){
var rr:Rectangle = rList.getItemAt(j) as Rectangle;
var nn:Node = rectIndexMap[rr];
nn.layerID = "r:"+j;
}
}
private function rectSort(r1:Rectangle,r2:Rectangle):int{
if (r1.width> r2.width) {
return 1;
}
if (r1.width < r2.width) {
return -1;
}
return 0;
}
public function getPointAtEllipse(x:Number, y:Number, w:Number, h:Number, angled:Number):Point {
var angle:Number =angled / 180.0 * Math.PI;
var px:Number = x + (Math.cos(angle) * 0.5 + 0.5) * w;
var py:Number = y + (Math.sin(angle) * 0.5 + 0.5) * h;
return new Point(px, py);
}
private function init():void{
timer=new Timer(30);
timer.addEventListener(TimerEvent.TIMER,function():void{
if(clockSise){
startAngle = startAngle+1;
}else{
startAngle = startAngle-1;
}
if(_needStop){
var abs:Number = Math.abs(startAngle-(_stopAngle+360)%360);
if(abs<2){
timer.stop();
}
}
});
network.addEventListener(MouseEvent.MOUSE_MOVE,function(e:MouseEvent):void{
var p:Point = network.getLogicalPoint(e);
resetClockSize(p);
});
network.addEventListener(MouseEvent.MOUSE_DOWN,function(e:MouseEvent):void{
var p:Point = network.getLogicalPoint(e);
var element:IElement = network.getElementByMouseEvent(e);
selectNode = element as Node;
resetClockSize(p);
});
network.addEventListener(ResizeEvent.RESIZE,function():void{
measureRotation();
});
}
private function test():void{
init();
Utils.registerImageByClass("p1", p1);
Utils.registerImageByClass("p2", p2);
Utils.registerImageByClass("p3", p3);
Utils.registerImageByClass("p4", p4);
Utils.registerImageByClass("p5", p5);
Utils.registerImageByClass("p6", p6);
Utils.registerImageByClass("p7", p7);
Utils.registerImageByClass("p8", p8);
var list:Collection = new Collection();
for(var i:int = 1;i<9;i++){
var sub:Node = new Node();
sub.setStyle(Styles.SELECT_STYLE,Consts.SELECT_STYLE_BORDER);
sub.setStyle(Styles.IMAGE_STRETCH,Consts.STRETCH_FILL);
sub.setStyle(Styles.SELECT_COLOR,"0x00ff00");
sub.setStyle(Styles.LABEL_POSITION,Consts.POSITION_CENTER);
sub.image = "p"+i;
sub.name = "sub"+i
list.addItem(sub);
box.add(sub);
}
this.rotationList = list;
network.elementBox = box;
this.start();
}
]]>
</mx:Script>
<ns:Network id="network" width="100%" height="100%" backgroundColor="0xffffff">
</ns:Network>
</mx:Application>