Method render

src/gsap-core.js:2420–2538

(totalTime, suppressEvents, force)

	}

	render(totalTime, suppressEvents, force) {
		let prevTime = this._time,
			tDur = this._tDur,
			dur = this._dur,
			isNegative = totalTime < 0,
			tTime = (totalTime > tDur - _tinyNum && !isNegative) ? tDur : (totalTime < _tinyNum) ? 0 : totalTime,
			time, pt, iteration, cycleDuration, prevIteration, isYoyo, ratio, timeline;
		if (!dur) {
			_renderZeroDurationTween(this, totalTime, suppressEvents, force);
		} else if (tTime !== this._tTime || !totalTime || force || (!this._initted && this._tTime) || (this._startAt && (this._zTime < 0) !== isNegative) || this._lazy) { // this senses if we're crossing over the start time, in which case we must record _zTime and force the render, but we do it in this lengthy conditional way for performance reasons (usually we can skip the calculations): this._initted && (this._zTime < 0) !== (totalTime < 0)
			time = tTime;
			timeline = this.timeline;
			if (this._repeat) { //adjust the time for repeats and yoyos
				cycleDuration = dur + this._rDelay;
				if (this._repeat < -1 && isNegative) {
					return this.totalTime(cycleDuration * 100 + totalTime, suppressEvents, force);
				}
				time = _roundPrecise(tTime % cycleDuration); //round to avoid floating point errors. (4 % 0.8 should be 0 but some browsers report it as 0.79999999!)
				if (tTime === tDur) { // the tDur === tTime is for edge cases where there's a lengthy decimal on the duration and it may reach the very end but the time is rendered as not-quite-there (remember, tDur is rounded to 4 decimals whereas dur isn't)
					iteration = this._repeat;
					time = dur;
				} else {
					prevIteration = _roundPrecise(tTime / cycleDuration); // full decimal version of iterations, not the previous iteration (we're reusing prevIteration variable for efficiency)
					iteration = ~~prevIteration;
					if (iteration && iteration === prevIteration) {
						time = dur;
						iteration--;
					} else if (time > dur) {
						time = dur;
					}
				}
				isYoyo = this._yoyo && (iteration & 1);
				if (isYoyo) time = dur - time;
				prevIteration = _animationCycle(this._tTime, cycleDuration);
				if (time === prevTime && !force && this._initted && iteration === prevIteration) {
					//could be during the repeatDelay part. No need to render and fire callbacks.
					this._tTime = tTime;
					return this;
				}
				if (iteration !== prevIteration) {
					//repeatRefresh functionality
					if (this.vars.repeatRefresh && !isYoyo && !this._lock && time !== cycleDuration && this._initted) { // this._time will === cycleDuration when we render at EXACTLY the end of an iteration. Without this condition, it'd often do the repeatRefresh render TWICE (again on the very next tick).
						this._lock = force = 1; //force, otherwise if lazy is true, the _attemptInitTween() will return and we'll jump out and get caught bouncing on each tick.
						this.render(_roundPrecise(cycleDuration * iteration), true).invalidate()._lock = 0;
					}
				}
			}

			if (!this._initted) {
				if (_attemptInitTween(this, isNegative ? totalTime : time, force, suppressEvents, tTime)) {
					this._tTime = 0; // in constructor if immediateRender is true, we set _tTime to -_tinyNum to have the playhead cross the starting point but we can't leave _tTime as a negative number.
					return this;
				}
				if (prevTime !== this._time && !(force && this.vars.repeatRefresh && iteration !== prevIteration)) { // rare edge case - during initialization, an onUpdate in the _startAt (.fromTo()) might force this tween to render at a different spot in which case we should ditch this render() call so that it doesn't revert the values. But we also don't want to dump if we're doing a repeatRefresh render!
					return this;
				}
				if (dur !== this._dur) { // while initting, a plugin like InertiaPlugin might alter the duration, so rerun from the start to ensure everything renders as it should.
					return this.render(totalTime, suppressEvents, force);