Rotate+ Zoom in AS3

Question

我有一个关于同时操作缩放和旋转图像的查询..实际上我想使用TransformGestureEvent在as3中对图像应用旋转和缩放

Answer 1

You should use the Matrix class . Creating a variation from this post :

function rotateAndZoom (
        ob:*, 
        angleDegrees:Number, 
        zoomAmt:Number, 
        ptRotationPoint:Point
) {
      var m:Matrix = ob.transform.matrix;

      m.tx -= ptRotationPoint.x;
      m.ty -= ptRotationPoint.y;

      m.rotate (angleDegrees*(Math.PI/180));
      m.scale(zoomAmt, zoomAmt);

      m.tx += ptRotationPoint.x;
      m.ty += ptRotationPoint.y;

      ob.transform.matrix = m;
 }

Let me know if this solves the problem.

Answer 2

Check out gestures recognition library similar to Apple's UIGestureRecognizers https://github.com/fljot/Gestouch/tree/develop

Combined example here https://github.com/fljot/GestouchExamples/blob/develop/src/org/gestouch/examples/views/ConflictGesturesView.mxml