您面临的问题是动画功能不会相互阻塞，因此当您fireAnimation()函数运行时，它同时启动两个动画，并且每个动画更改都会应用于每个帧，这意味着两个动画同时发生。
解决此问题的一种方法是使用动画来链接动画调用.onComplete事件。这样做might如果您需要更新动画的顺序，则会将您陷入一种地狱般的境地。
鉴于您建议可能有一个相继应用的动画列表，通过创建一个基于动画参数输入列表应用动画的通用函数可能会更好，如下所示（代码中注释中的说明）：
function startAnimationQueue(animationQueue){
// queues up the animations for the shape
var runningDuration = 0; // variable that adds up the animationQueue durations
for (var i=0; i<animationQueue.length; i++){
var animationDefinition = animationQueue[i];
// Create a closure around the animationDefiniton so that each setTimeout gets sequential animationDefinition inputs
var fn = (function(animationDefinition){
return function(){
triangle.animate('left', animationDefinition.left, {duration: animationDefinition.duration, onChange:canvas.renderAll.bind(canvas)})
triangle.animate('top', animationDefinition.top, {duration: animationDefinition.duration, onChange:canvas.renderAll.bind(canvas)})
// Note: you can animate additional attributes here if you want, just add additional attributes to the objects in
// the animationQueue list. You could also have one of those inputs be the object to be animated in case you want
// to animate multiple objects using the same queue.
};
})
// Create the timeout that will apply the transformations sequentially
// If you want you could set the window.setTimeout to a variable that you could destroy if you need
// to interrupt the animation queue after you create it (but before it finishes)
window.setTimeout(fn(animationDefinition), runningDuration);
// set the next setTimeout duration to be .duration later than the previous one
// this makes the second animation fire after the first one completes
runningDuration += animationDefinition.duration;
}
}
document.onreadystatechange = function () {
if (document.readyState == "complete") {
// I put the canvas init stuff in here because of (I think) a failed race condition or something that caused
// your original method to fail in Chrome
window.canvas = new fabric.Canvas('scene');
window.triangle = new fabric.Triangle({
width: 30
, height: 30
, fill: 'red'
, left: 30
, top: 0
});
window.canvas.add(window.triangle);
window.canvas.renderAll();
// Create a list of animations to apply
var animationQueue = [
{"left": "+=0", "top": "+=100", "duration": 1000},
{"left": "+=55", "top": "+=0", "duration": 2000}
]
// Apply the animations in sequence using window.setTimeout
startAnimationQueue(animationQueue);
}
}
