Question

我创建了一个Kineticjs Circle形状，即我缩放。我用anim.start（）;开始缩放alarmcircle。知道我是否可以设置缩放动画的持续时间（ex 2秒）。我想要的是将alarmcircle设置为持续2秒的比例。

var period = 2000;

var anim = new Kinetic.Animation(function(frame) {
    var scale = Math.sin(frame.time * 2 * Math.PI / period) + 0.001;
    alarmcircle.scale({x:scale,y:scale});
}, layer);

anim.start();

Answer 1

<script>


var period = 2000 ;
var anim = new Kinetic.Animation({
    func: function(frame) {
        if (frame.time >= period ) {
            anim.stop() ;//this will last for 2s and then as soon as the frame time passes 2s it will stop
        } else {
            var scale = Math.sin(frame.time * 2 * Math.PI / period) + 0.001;
            alarmcircle.scale({x:scale,y:scale});
        }
    },
    node: layer
});

anim.start();
</script>

如何在Kineticjs中将持续时间设置为两秒？

1 个答案: