我正在尝试在动画播放时获取矩形的坐标。您可以在此处查看动画的代码和类型:http://jsfiddle.net/2UZM3/
可以看出,在动画结束时会打印坐标。我想在矩形移动时永久更新坐标。
感谢您的帮助!
PS:源代码最初来自这里:http://www.html5canvastutorials.com/kineticjs/html5-canvas-transition-easing-functions-with-kineticjs/
答案 0 :(得分:0)
您可以为stage.onFrame
添加一个处理项目坐标的处理程序。只需在用户单击按钮以启动动画时启动stage
,并在执行stage
方法的回调时停止transitionTo
:
window.onload = function() {
var stage = new Kinetic.Stage({
container: "container",
width: 500,
height: 200
});
var layer = new Kinetic.Layer();
var greenBox = new Kinetic.Rect({
x: 100,
y: stage.getHeight() / 2,
width: 100,
height: 50,
fill: 'green',
stroke: 'black',
strokeWidth: 4
});
layer.add(greenBox);
stage.add(layer);
stage.onFrame(function(frame) {
// Update print coordinates on each frame of animation loop
jQuery("#coordinates").text(Math.round(greenBox.getX()) + "," + Math.round(greenBox.getY()));
});
jQuery("#StartAnim").click(function() {
// Start the timer running
stage.start();
greenBox.transitionTo({
x: 300,
duration: 1,
easing: 'ease-in-out',
callback: function() {
// Stop the stage loop
stage.stop();
}
});
});
};
更新了小提琴here。