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frontend/node_modules/zrender/lib/animation/Clip.js

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+import easingFuncs from './easing.js';
+import { isFunction, noop } from '../core/util.js';
+import { createCubicEasingFunc } from './cubicEasing.js';
+var Clip = (function () {
+    function Clip(opts) {
+        this._inited = false;
+        this._startTime = 0;
+        this._pausedTime = 0;
+        this._paused = false;
+        this._life = opts.life || 1000;
+        this._delay = opts.delay || 0;
+        this.loop = opts.loop || false;
+        this.onframe = opts.onframe || noop;
+        this.ondestroy = opts.ondestroy || noop;
+        this.onrestart = opts.onrestart || noop;
+        opts.easing && this.setEasing(opts.easing);
+    }
+    Clip.prototype.step = function (globalTime, deltaTime) {
+        if (!this._inited) {
+            this._startTime = globalTime + this._delay;
+            this._inited = true;
+        }
+        if (this._paused) {
+            this._pausedTime += deltaTime;
+            return;
+        }
+        var life = this._life;
+        var elapsedTime = globalTime - this._startTime - this._pausedTime;
+        var percent = elapsedTime / life;
+        if (percent < 0) {
+            percent = 0;
+        }
+        percent = Math.min(percent, 1);
+        var easingFunc = this.easingFunc;
+        var schedule = easingFunc ? easingFunc(percent) : percent;
+        this.onframe(schedule);
+        if (percent === 1) {
+            if (this.loop) {
+                var remainder = elapsedTime % life;
+                this._startTime = globalTime - remainder;
+                this._pausedTime = 0;
+                this.onrestart();
+            }
+            else {
+                return true;
+            }
+        }
+        return false;
+    };
+    Clip.prototype.pause = function () {
+        this._paused = true;
+    };
+    Clip.prototype.resume = function () {
+        this._paused = false;
+    };
+    Clip.prototype.setEasing = function (easing) {
+        this.easing = easing;
+        this.easingFunc = isFunction(easing)
+            ? easing
+            : easingFuncs[easing] || createCubicEasingFunc(easing);
+    };
+    return Clip;
+}());
+export default Clip;