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META-INF.assets.rjzjh.zrender.animation.Animator.js Maven / Gradle / Ivy
/**
* @module echarts/animation/Animator
*/
define(function (require) {
var Clip = require('./Clip');
var color = require('../tool/color');
var util = require('../core/util');
var isArrayLike = util.isArrayLike;
var arraySlice = Array.prototype.slice;
function defaultGetter(target, key) {
return target[key];
}
function defaultSetter(target, key, value) {
target[key] = value;
}
/**
* @param {number} p0
* @param {number} p1
* @param {number} percent
* @return {number}
*/
function interpolateNumber(p0, p1, percent) {
return (p1 - p0) * percent + p0;
}
/**
* @param {string} p0
* @param {string} p1
* @param {number} percent
* @return {string}
*/
function interpolateString(p0, p1, percent) {
return percent > 0.5 ? p1 : p0;
}
/**
* @param {Array} p0
* @param {Array} p1
* @param {number} percent
* @param {Array} out
* @param {number} arrDim
*/
function interpolateArray(p0, p1, percent, out, arrDim) {
var len = p0.length;
if (arrDim == 1) {
for (var i = 0; i < len; i++) {
out[i] = interpolateNumber(p0[i], p1[i], percent);
}
}
else {
var len2 = p0[0].length;
for (var i = 0; i < len; i++) {
for (var j = 0; j < len2; j++) {
out[i][j] = interpolateNumber(
p0[i][j], p1[i][j], percent
);
}
}
}
}
// arr0 is source array, arr1 is target array.
// Do some preprocess to avoid error happened when interpolating from arr0 to arr1
function fillArr(arr0, arr1, arrDim) {
var arr0Len = arr0.length;
var arr1Len = arr1.length;
if (arr0Len !== arr1Len) {
// FIXME Not work for TypedArray
var isPreviousLarger = arr0Len > arr1Len;
if (isPreviousLarger) {
// Cut the previous
arr0.length = arr1Len;
}
else {
// Fill the previous
for (var i = arr0Len; i < arr1Len; i++) {
arr0.push(
arrDim === 1 ? arr1[i] : arraySlice.call(arr1[i])
);
}
}
}
// Handling NaN value
var len2 = arr0[0] && arr0[0].length;
for (var i = 0; i < arr0.length; i++) {
if (arrDim === 1) {
if (isNaN(arr0[i])) {
arr0[i] = arr1[i];
}
}
else {
for (var j = 0; j < len2; j++) {
if (isNaN(arr0[i][j])) {
arr0[i][j] = arr1[i][j];
}
}
}
}
}
/**
* @param {Array} arr0
* @param {Array} arr1
* @param {number} arrDim
* @return {boolean}
*/
function isArraySame(arr0, arr1, arrDim) {
if (arr0 === arr1) {
return true;
}
var len = arr0.length;
if (len !== arr1.length) {
return false;
}
if (arrDim === 1) {
for (var i = 0; i < len; i++) {
if (arr0[i] !== arr1[i]) {
return false;
}
}
}
else {
var len2 = arr0[0].length;
for (var i = 0; i < len; i++) {
for (var j = 0; j < len2; j++) {
if (arr0[i][j] !== arr1[i][j]) {
return false;
}
}
}
}
return true;
}
/**
* Catmull Rom interpolate array
* @param {Array} p0
* @param {Array} p1
* @param {Array} p2
* @param {Array} p3
* @param {number} t
* @param {number} t2
* @param {number} t3
* @param {Array} out
* @param {number} arrDim
*/
function catmullRomInterpolateArray(
p0, p1, p2, p3, t, t2, t3, out, arrDim
) {
var len = p0.length;
if (arrDim == 1) {
for (var i = 0; i < len; i++) {
out[i] = catmullRomInterpolate(
p0[i], p1[i], p2[i], p3[i], t, t2, t3
);
}
}
else {
var len2 = p0[0].length;
for (var i = 0; i < len; i++) {
for (var j = 0; j < len2; j++) {
out[i][j] = catmullRomInterpolate(
p0[i][j], p1[i][j], p2[i][j], p3[i][j],
t, t2, t3
);
}
}
}
}
/**
* Catmull Rom interpolate number
* @param {number} p0
* @param {number} p1
* @param {number} p2
* @param {number} p3
* @param {number} t
* @param {number} t2
* @param {number} t3
* @return {number}
*/
function catmullRomInterpolate(p0, p1, p2, p3, t, t2, t3) {
var v0 = (p2 - p0) * 0.5;
var v1 = (p3 - p1) * 0.5;
return (2 * (p1 - p2) + v0 + v1) * t3
+ (-3 * (p1 - p2) - 2 * v0 - v1) * t2
+ v0 * t + p1;
}
function cloneValue(value) {
if (isArrayLike(value)) {
var len = value.length;
if (isArrayLike(value[0])) {
var ret = [];
for (var i = 0; i < len; i++) {
ret.push(arraySlice.call(value[i]));
}
return ret;
}
return arraySlice.call(value);
}
return value;
}
function rgba2String(rgba) {
rgba[0] = Math.floor(rgba[0]);
rgba[1] = Math.floor(rgba[1]);
rgba[2] = Math.floor(rgba[2]);
return 'rgba(' + rgba.join(',') + ')';
}
function createTrackClip (animator, easing, oneTrackDone, keyframes, propName) {
var getter = animator._getter;
var setter = animator._setter;
var useSpline = easing === 'spline';
var trackLen = keyframes.length;
if (!trackLen) {
return;
}
// Guess data type
var firstVal = keyframes[0].value;
var isValueArray = isArrayLike(firstVal);
var isValueColor = false;
var isValueString = false;
// For vertices morphing
var arrDim = (
isValueArray
&& isArrayLike(firstVal[0])
)
? 2 : 1;
var trackMaxTime;
// Sort keyframe as ascending
keyframes.sort(function(a, b) {
return a.time - b.time;
});
trackMaxTime = keyframes[trackLen - 1].time;
// Percents of each keyframe
var kfPercents = [];
// Value of each keyframe
var kfValues = [];
var prevValue = keyframes[0].value;
var isAllValueEqual = true;
for (var i = 0; i < trackLen; i++) {
kfPercents.push(keyframes[i].time / trackMaxTime);
// Assume value is a color when it is a string
var value = keyframes[i].value;
// Check if value is equal, deep check if value is array
if (!((isValueArray && isArraySame(value, prevValue, arrDim))
|| (!isValueArray && value === prevValue))) {
isAllValueEqual = false;
}
prevValue = value;
// Try converting a string to a color array
if (typeof value == 'string') {
var colorArray = color.parse(value);
if (colorArray) {
value = colorArray;
isValueColor = true;
}
else {
isValueString = true;
}
}
kfValues.push(value);
}
if (isAllValueEqual) {
return;
}
var lastValue = kfValues[trackLen - 1];
// Polyfill array and NaN value
for (var i = 0; i < trackLen - 1; i++) {
if (isValueArray) {
fillArr(kfValues[i], lastValue, arrDim);
}
else {
if (isNaN(kfValues[i]) && !isNaN(lastValue) && !isValueString && !isValueColor) {
kfValues[i] = lastValue;
}
}
}
isValueArray && fillArr(getter(animator._target, propName), lastValue, arrDim);
// Cache the key of last frame to speed up when
// animation playback is sequency
var lastFrame = 0;
var lastFramePercent = 0;
var start;
var w;
var p0;
var p1;
var p2;
var p3;
if (isValueColor) {
var rgba = [0, 0, 0, 0];
}
var onframe = function (target, percent) {
// Find the range keyframes
// kf1-----kf2---------current--------kf3
// find kf2 and kf3 and do interpolation
var frame;
if (percent < lastFramePercent) {
// Start from next key
start = Math.min(lastFrame + 1, trackLen - 1);
for (frame = start; frame >= 0; frame--) {
if (kfPercents[frame] <= percent) {
break;
}
}
frame = Math.min(frame, trackLen - 2);
}
else {
for (frame = lastFrame; frame < trackLen; frame++) {
if (kfPercents[frame] > percent) {
break;
}
}
frame = Math.min(frame - 1, trackLen - 2);
}
lastFrame = frame;
lastFramePercent = percent;
var range = (kfPercents[frame + 1] - kfPercents[frame]);
if (range === 0) {
return;
}
else {
w = (percent - kfPercents[frame]) / range;
}
if (useSpline) {
p1 = kfValues[frame];
p0 = kfValues[frame === 0 ? frame : frame - 1];
p2 = kfValues[frame > trackLen - 2 ? trackLen - 1 : frame + 1];
p3 = kfValues[frame > trackLen - 3 ? trackLen - 1 : frame + 2];
if (isValueArray) {
catmullRomInterpolateArray(
p0, p1, p2, p3, w, w * w, w * w * w,
getter(target, propName),
arrDim
);
}
else {
var value;
if (isValueColor) {
value = catmullRomInterpolateArray(
p0, p1, p2, p3, w, w * w, w * w * w,
rgba, 1
);
value = rgba2String(rgba);
}
else if (isValueString) {
// String is step(0.5)
return interpolateString(p1, p2, w);
}
else {
value = catmullRomInterpolate(
p0, p1, p2, p3, w, w * w, w * w * w
);
}
setter(
target,
propName,
value
);
}
}
else {
if (isValueArray) {
interpolateArray(
kfValues[frame], kfValues[frame + 1], w,
getter(target, propName),
arrDim
);
}
else {
var value;
if (isValueColor) {
interpolateArray(
kfValues[frame], kfValues[frame + 1], w,
rgba, 1
);
value = rgba2String(rgba);
}
else if (isValueString) {
// String is step(0.5)
return interpolateString(kfValues[frame], kfValues[frame + 1], w);
}
else {
value = interpolateNumber(kfValues[frame], kfValues[frame + 1], w);
}
setter(
target,
propName,
value
);
}
}
};
var clip = new Clip({
target: animator._target,
life: trackMaxTime,
loop: animator._loop,
delay: animator._delay,
onframe: onframe,
ondestroy: oneTrackDone
});
if (easing && easing !== 'spline') {
clip.easing = easing;
}
return clip;
}
/**
* @alias module:zrender/animation/Animator
* @constructor
* @param {Object} target
* @param {boolean} loop
* @param {Function} getter
* @param {Function} setter
*/
var Animator = function(target, loop, getter, setter) {
this._tracks = {};
this._target = target;
this._loop = loop || false;
this._getter = getter || defaultGetter;
this._setter = setter || defaultSetter;
this._clipCount = 0;
this._delay = 0;
this._doneList = [];
this._onframeList = [];
this._clipList = [];
};
Animator.prototype = {
/**
* 设置动画关键帧
* @param {number} time 关键帧时间，单位是ms
* @param {Object} props 关键帧的属性值，key-value表示
* @return {module:zrender/animation/Animator}
*/
when: function(time /* ms */, props) {
var tracks = this._tracks;
for (var propName in props) {
if (!tracks[propName]) {
tracks[propName] = [];
// Invalid value
var value = this._getter(this._target, propName);
if (value == null) {
// zrLog('Invalid property ' + propName);
continue;
}
// If time is 0
// Then props is given initialize value
// Else
// Initialize value from current prop value
if (time !== 0) {
tracks[propName].push({
time: 0,
value: cloneValue(value)
});
}
}
tracks[propName].push({
time: time,
value: props[propName]
});
}
return this;
},
/**
* 添加动画每一帧的回调函数
* @param {Function} callback
* @return {module:zrender/animation/Animator}
*/
during: function (callback) {
this._onframeList.push(callback);
return this;
},
_doneCallback: function () {
// Clear all tracks
this._tracks = {};
// Clear all clips
this._clipList.length = 0;
var doneList = this._doneList;
var len = doneList.length;
for (var i = 0; i < len; i++) {
doneList[i].call(this);
}
},
/**
* 开始执行动画
* @param {string|Function} easing
* 动画缓动函数，详见{@link module:zrender/animation/easing}
* @return {module:zrender/animation/Animator}
*/
start: function (easing) {
var self = this;
var clipCount = 0;
var oneTrackDone = function() {
clipCount--;
if (!clipCount) {
self._doneCallback();
}
};
var lastClip;
for (var propName in this._tracks) {
var clip = createTrackClip(
this, easing, oneTrackDone,
this._tracks[propName], propName
);
if (clip) {
this._clipList.push(clip);
clipCount++;
// If start after added to animation
if (this.animation) {
this.animation.addClip(clip);
}
lastClip = clip;
}
}
// Add during callback on the last clip
if (lastClip) {
var oldOnFrame = lastClip.onframe;
lastClip.onframe = function (target, percent) {
oldOnFrame(target, percent);
for (var i = 0; i < self._onframeList.length; i++) {
self._onframeList[i](target, percent);
}
};
}
if (!clipCount) {
this._doneCallback();
}
return this;
},
/**
* 停止动画
* @param {boolean} forwardToLast If move to last frame before stop
*/
stop: function (forwardToLast) {
var clipList = this._clipList;
var animation = this.animation;
for (var i = 0; i < clipList.length; i++) {
var clip = clipList[i];
if (forwardToLast) {
// Move to last frame before stop
clip.onframe(this._target, 1);
}
animation && animation.removeClip(clip);
}
clipList.length = 0;
},
/**
* 设置动画延迟开始的时间
* @param {number} time 单位ms
* @return {module:zrender/animation/Animator}
*/
delay: function (time) {
this._delay = time;
return this;
},
/**
* 添加动画结束的回调
* @param {Function} cb
* @return {module:zrender/animation/Animator}
*/
done: function(cb) {
if (cb) {
this._doneList.push(cb);
}
return this;
},
/**
* @return {Array.}
*/
getClips: function () {
return this._clipList;
}
};
return Animator;
});
