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新建一个元件,名称为pic
pic.addEventListener (MouseEvent.MOUSE_WHEEL,zoomHandler);
function zoomHandler (e:MouseEvent)
{
if (e.delta > 0)
{
e.currentTarget.scaleX += 0.1;
e.currentTarget.scaleY += 0.1;
e.currentTarget.x=mouseX-e.localX*(e.currentTarget.scaleX);
e.currentTarget.y=mouseY-e.localY*(e.currentTarget.scaleY);
}
else
{
e.currentTarget.scaleX -= 0.1;
e.currentTarget.scaleY -= 0.1;
e.currentTarget.x=mouseX-e.localX*(e.currentTarget.scaleX);
e.currentTarget.y=mouseY-e.localY*(e.currentTarget.scaleY);
}
}
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