139 lines
3.6 KiB
JavaScript
139 lines
3.6 KiB
JavaScript
#include easings.js
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// This probably need a bit of a rewrite at some point to allow starting for arbitrary time points
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const MamiAnimate = info => {
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if(typeof info !== 'object')
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throw 'info must be an object';
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let onUpdate;
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if('update' in info && typeof info.update === 'function')
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onUpdate = info.update;
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if(onUpdate === undefined)
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throw 'update is a required parameter for info';
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let duration;
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if('duration' in info)
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duration = parseFloat(info.duration);
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if(duration <= 0)
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throw 'duration is a required parameter for info and must be greater than 0';
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let onStart;
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if('start' in info && typeof info.start === 'function')
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onStart = info.start;
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let onEnd;
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if('end' in info && typeof info.end === 'function')
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onEnd = info.end;
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let onCancel;
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if('cancel' in info && typeof info.cancel === 'function')
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onCancel = info.cancel;
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let easing;
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if('easing' in info)
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easing = info.easing;
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let delayed;
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if('delayed' in info)
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delayed = !!info.delayed;
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let async;
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if('async' in info)
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async = !!info.async;
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const easingType = typeof easing;
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if(easingType !== 'function') {
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if(easingType === 'string' && easing in MamiEasings)
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easing = MamiEasings[easing];
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else
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easing = MamiEasings.linear;
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}
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if(typeof window.mami?.settings?.get === 'function')
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duration *= mami.settings.get('dbgAnimDurationMulti');
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let tStart, tLast,
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cancel = false,
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tRawCompletion = 0,
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tCompletion = 0,
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started = !delayed;
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const update = tCurrent => {
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if(tStart === undefined) {
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tStart = tCurrent;
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if(onStart !== undefined)
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onStart();
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}
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const tElapsed = tCurrent - tStart;
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tRawCompletion = Math.min(1, Math.max(0, tElapsed / duration));
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tCompletion = easing(tRawCompletion);
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onUpdate(tCompletion, tRawCompletion);
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if(tElapsed < duration) {
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if(cancel) {
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if(onCancel !== undefined)
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onCancel(tCompletion, tRawCompletion);
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return;
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}
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tLast = tCurrent;
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requestAnimationFrame(update);
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} else if(onEnd !== undefined)
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onEnd();
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};
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let promise;
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if(async)
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promise = new Promise((resolve, reject) => {
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if(onCancel === undefined) {
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onCancel = reject;
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} else {
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const realOnCancel = onCancel;
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onCancel = (...args) => {
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realOnCancel(...args);
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reject(...args);
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};
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}
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if(onEnd === undefined) {
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onEnd = resolve;
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} else {
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const realOnEnd = onEnd;
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onEnd = (...args) => {
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realOnEnd(...args);
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resolve(...args);
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};
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}
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if(!delayed)
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requestAnimationFrame(update);
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});
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if(!delayed) {
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if(promise !== undefined)
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return promise;
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requestAnimationFrame(update);
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}
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return {
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getCompletion: () => tCompletion,
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getRawCompletion: () => tRawCompletion,
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start: () => {
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if(!started) {
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started = true;
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requestAnimationFrame(update);
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}
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if(promise !== undefined)
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return promise;
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},
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cancel: () => {
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cancel = true;
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},
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};
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};
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