Determining the direction of a Gesture in Flash CS5 on the iPhone
February 5th, 2010 by Gabor Wraight
If you need to find out in what direction a gesture goes, e.g. Up, Down, Left or Right the following Script might help.
Actionscript:
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this.addEventListener(TouchEvent.TOUCH_BEGIN, onTouchBegin)
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this.addEventListener(TouchEvent.TOUCH_END, onTouchEnd)
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var startPoint:Point;
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var endPoint:Point;
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function onTouchBegin(e:TouchEvent):void
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{
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startPoint = new Point(e.localX, e.localY);
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}
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function onTouchEnd(e:TouchEvent):void
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{
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endPoint = new Point(e.localX, e.localY);
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var a:Number = endPoint.y - startPoint.y;
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var b:Number = endPoint.x - startPoint.x;
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if(a*a> b*b){
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if(a> 0){
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//down
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}else{
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//up
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}
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}else{
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if(b> 0){
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//right
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}else{
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//left
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}
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}
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}
This entry was posted on Friday, February 5th, 2010 at 12:13 and is filed under Actionscript 3.0, Flash CS5, iphone. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.