138 lines
3.5 KiB
JavaScript
138 lines
3.5 KiB
JavaScript
#include easings.js
|
|
|
|
const MamiAnimate = function(info) {
|
|
if(typeof info !== 'object')
|
|
throw 'info must be an object';
|
|
|
|
let onUpdate;
|
|
if('update' in info && typeof info.update === 'function')
|
|
onUpdate = info.update;
|
|
if(onUpdate === undefined)
|
|
throw 'update is a required parameter for info';
|
|
|
|
let duration;
|
|
if('duration' in info)
|
|
duration = parseFloat(info.duration);
|
|
if(duration <= 0)
|
|
throw 'duration is a required parameter for info and must be greater than 0';
|
|
|
|
let onStart;
|
|
if('start' in info && typeof info.start === 'function')
|
|
onStart = info.start;
|
|
|
|
let onEnd;
|
|
if('end' in info && typeof info.end === 'function')
|
|
onEnd = info.end;
|
|
|
|
let onCancel;
|
|
if('cancel' in info && typeof info.cancel === 'function')
|
|
onCancel = info.cancel;
|
|
|
|
let easing;
|
|
if('easing' in info)
|
|
easing = info.easing;
|
|
|
|
let delayed;
|
|
if('delayed' in info)
|
|
delayed = !!info.delayed;
|
|
|
|
let async;
|
|
if('async' in info)
|
|
async = !!info.async;
|
|
|
|
const easingType = typeof easing;
|
|
if(easingType !== 'function') {
|
|
if(easingType === 'string' && easing in MamiEasings)
|
|
easing = MamiEasings[easing];
|
|
else
|
|
easing = MamiEasings.linear;
|
|
}
|
|
|
|
let tStart, tLast,
|
|
cancel = false,
|
|
tRawCompletion = 0,
|
|
tCompletion = 0,
|
|
started = !delayed;
|
|
|
|
const update = function(tCurrent) {
|
|
if(tStart === undefined) {
|
|
tStart = tCurrent;
|
|
if(onStart !== undefined)
|
|
onStart();
|
|
}
|
|
|
|
const tElapsed = tCurrent - tStart;
|
|
|
|
tRawCompletion = Math.min(1, Math.max(0, tElapsed / duration));
|
|
tCompletion = easing(tRawCompletion);
|
|
|
|
onUpdate(tCompletion, tRawCompletion);
|
|
|
|
if(tElapsed < duration) {
|
|
if(cancel) {
|
|
if(onCancel !== undefined)
|
|
onCancel(tCompletion, tRawCompletion);
|
|
return;
|
|
}
|
|
|
|
tLast = tCurrent;
|
|
requestAnimationFrame(update);
|
|
} else if(onEnd !== undefined)
|
|
onEnd();
|
|
};
|
|
|
|
let promise;
|
|
if(async)
|
|
promise = new Promise((resolve, reject) => {
|
|
if(onCancel === undefined) {
|
|
onCancel = reject;
|
|
} else {
|
|
const realOnCancel = onCancel;
|
|
onCancel = (...args) => {
|
|
realOnCancel(...args);
|
|
reject(...args);
|
|
};
|
|
}
|
|
|
|
if(onEnd === undefined) {
|
|
onEnd = resolve;
|
|
} else {
|
|
const realOnEnd = onEnd;
|
|
onEnd = (...args) => {
|
|
realOnEnd(...args);
|
|
resolve(...args);
|
|
};
|
|
}
|
|
|
|
if(!delayed)
|
|
requestAnimationFrame(update);
|
|
});
|
|
|
|
if(!delayed) {
|
|
if(promise !== undefined)
|
|
return promise;
|
|
|
|
requestAnimationFrame(update);
|
|
}
|
|
|
|
return {
|
|
getCompletion: function() {
|
|
return tCompletion;
|
|
},
|
|
getRawCompletion: function() {
|
|
return tRawCompletion;
|
|
},
|
|
start: () => {
|
|
if(!started) {
|
|
started = true;
|
|
requestAnimationFrame(update);
|
|
}
|
|
|
|
if(promise !== undefined)
|
|
return promise;
|
|
},
|
|
cancel: function() {
|
|
cancel = true;
|
|
},
|
|
};
|
|
};
|