594 lines
22 KiB
JavaScript
594 lines
22 KiB
JavaScript
define([
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'../../Core/binarySearch',
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'../../Core/ClockRange',
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'../../Core/ClockStep',
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'../../Core/defined',
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'../../Core/defineProperties',
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'../../Core/DeveloperError',
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'../../Core/JulianDate',
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'../../ThirdParty/knockout',
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'../../ThirdParty/sprintf',
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'../createCommand',
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'../ToggleButtonViewModel'
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], function(
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binarySearch,
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ClockRange,
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ClockStep,
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defined,
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defineProperties,
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DeveloperError,
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JulianDate,
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knockout,
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sprintf,
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createCommand,
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ToggleButtonViewModel) {
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'use strict';
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var monthNames = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
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var realtimeShuttleRingAngle = 15;
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var maxShuttleRingAngle = 105;
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function numberComparator(left, right) {
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return left - right;
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}
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function getTypicalMultiplierIndex(multiplier, shuttleRingTicks) {
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var index = binarySearch(shuttleRingTicks, multiplier, numberComparator);
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return index < 0 ? ~index : index;
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}
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function angleToMultiplier(angle, shuttleRingTicks) {
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//Use a linear scale for -1 to 1 between -15 < angle < 15 degrees
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if (Math.abs(angle) <= realtimeShuttleRingAngle) {
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return angle / realtimeShuttleRingAngle;
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}
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var minp = realtimeShuttleRingAngle;
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var maxp = maxShuttleRingAngle;
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var maxv;
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var minv = 0;
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var scale;
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if (angle > 0) {
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maxv = Math.log(shuttleRingTicks[shuttleRingTicks.length - 1]);
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scale = (maxv - minv) / (maxp - minp);
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return Math.exp(minv + scale * (angle - minp));
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}
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maxv = Math.log(-shuttleRingTicks[0]);
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scale = (maxv - minv) / (maxp - minp);
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return -Math.exp(minv + scale * (Math.abs(angle) - minp));
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}
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function multiplierToAngle(multiplier, shuttleRingTicks, clockViewModel) {
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if (clockViewModel.clockStep === ClockStep.SYSTEM_CLOCK) {
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return realtimeShuttleRingAngle;
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}
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if (Math.abs(multiplier) <= 1) {
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return multiplier * realtimeShuttleRingAngle;
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}
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var fastedMultipler = shuttleRingTicks[shuttleRingTicks.length - 1];
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if(multiplier > fastedMultipler){
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multiplier = fastedMultipler;
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} else if(multiplier < -fastedMultipler){
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multiplier = -fastedMultipler;
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}
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var minp = realtimeShuttleRingAngle;
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var maxp = maxShuttleRingAngle;
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var maxv;
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var minv = 0;
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var scale;
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if (multiplier > 0) {
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maxv = Math.log(fastedMultipler);
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scale = (maxv - minv) / (maxp - minp);
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return (Math.log(multiplier) - minv) / scale + minp;
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}
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maxv = Math.log(-shuttleRingTicks[0]);
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scale = (maxv - minv) / (maxp - minp);
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return -((Math.log(Math.abs(multiplier)) - minv) / scale + minp);
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}
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/**
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* The view model for the {@link Animation} widget.
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* @alias AnimationViewModel
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* @constructor
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*
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* @param {ClockViewModel} clockViewModel The ClockViewModel instance to use.
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*
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* @see Animation
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*/
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function AnimationViewModel(clockViewModel) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(clockViewModel)) {
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throw new DeveloperError('clockViewModel is required.');
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}
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//>>includeEnd('debug');
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var that = this;
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this._clockViewModel = clockViewModel;
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this._allShuttleRingTicks = [];
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this._dateFormatter = AnimationViewModel.defaultDateFormatter;
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this._timeFormatter = AnimationViewModel.defaultTimeFormatter;
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/**
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* Gets or sets whether the shuttle ring is currently being dragged. This property is observable.
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* @type {Boolean}
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* @default false
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*/
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this.shuttleRingDragging = false;
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/**
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* Gets or sets whether dragging the shuttle ring should cause the multiplier
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* to snap to the defined tick values rather than interpolating between them.
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* This property is observable.
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* @type {Boolean}
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* @default false
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*/
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this.snapToTicks = false;
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knockout.track(this, ['_allShuttleRingTicks', '_dateFormatter', '_timeFormatter', 'shuttleRingDragging', 'snapToTicks']);
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this._sortedFilteredPositiveTicks = [];
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this.setShuttleRingTicks(AnimationViewModel.defaultTicks);
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/**
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* Gets the string representation of the current time. This property is observable.
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* @type {String}
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*/
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this.timeLabel = undefined;
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knockout.defineProperty(this, 'timeLabel', function() {
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return that._timeFormatter(that._clockViewModel.currentTime, that);
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});
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/**
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* Gets the string representation of the current date. This property is observable.
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* @type {String}
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*/
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this.dateLabel = undefined;
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knockout.defineProperty(this, 'dateLabel', function() {
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return that._dateFormatter(that._clockViewModel.currentTime, that);
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});
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/**
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* Gets the string representation of the current multiplier. This property is observable.
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* @type {String}
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*/
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this.multiplierLabel = undefined;
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knockout.defineProperty(this, 'multiplierLabel', function() {
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var clockViewModel = that._clockViewModel;
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if (clockViewModel.clockStep === ClockStep.SYSTEM_CLOCK) {
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return 'Today';
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}
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var multiplier = clockViewModel.multiplier;
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//If it's a whole number, just return it.
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if (multiplier % 1 === 0) {
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return multiplier.toFixed(0) + 'x';
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}
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//Convert to decimal string and remove any trailing zeroes
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return multiplier.toFixed(3).replace(/0{0,3}$/, '') + 'x';
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});
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/**
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* Gets or sets the current shuttle ring angle. This property is observable.
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* @type {Number}
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*/
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this.shuttleRingAngle = undefined;
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knockout.defineProperty(this, 'shuttleRingAngle', {
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get : function() {
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return multiplierToAngle(clockViewModel.multiplier, that._allShuttleRingTicks, clockViewModel);
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},
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set : function(angle) {
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angle = Math.max(Math.min(angle, maxShuttleRingAngle), -maxShuttleRingAngle);
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var ticks = that._allShuttleRingTicks;
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var clockViewModel = that._clockViewModel;
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clockViewModel.clockStep = ClockStep.SYSTEM_CLOCK_MULTIPLIER;
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//If we are at the max angle, simply return the max value in either direction.
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if (Math.abs(angle) === maxShuttleRingAngle) {
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clockViewModel.multiplier = angle > 0 ? ticks[ticks.length - 1] : ticks[0];
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return;
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}
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var multiplier = angleToMultiplier(angle, ticks);
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if (that.snapToTicks) {
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multiplier = ticks[getTypicalMultiplierIndex(multiplier, ticks)];
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} else if (multiplier !== 0) {
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var positiveMultiplier = Math.abs(multiplier);
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if (positiveMultiplier > 100) {
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var numDigits = positiveMultiplier.toFixed(0).length - 2;
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var divisor = Math.pow(10, numDigits);
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multiplier = (Math.round(multiplier / divisor) * divisor) | 0;
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} else if (positiveMultiplier > realtimeShuttleRingAngle) {
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multiplier = Math.round(multiplier);
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} else if (positiveMultiplier > 1) {
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multiplier = +multiplier.toFixed(1);
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} else if (positiveMultiplier > 0) {
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multiplier = +multiplier.toFixed(2);
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}
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}
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clockViewModel.multiplier = multiplier;
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}
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});
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this._canAnimate = undefined;
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knockout.defineProperty(this, '_canAnimate', function() {
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var clockViewModel = that._clockViewModel;
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var clockRange = clockViewModel.clockRange;
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if (that.shuttleRingDragging || clockRange === ClockRange.UNBOUNDED) {
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return true;
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}
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var multiplier = clockViewModel.multiplier;
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var currentTime = clockViewModel.currentTime;
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var startTime = clockViewModel.startTime;
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var result = false;
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if (clockRange === ClockRange.LOOP_STOP) {
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result = JulianDate.greaterThan(currentTime, startTime) || (currentTime.equals(startTime) && multiplier > 0);
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} else {
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var stopTime = clockViewModel.stopTime;
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result = (JulianDate.greaterThan(currentTime, startTime) && JulianDate.lessThan(currentTime, stopTime)) || //
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(currentTime.equals(startTime) && multiplier > 0) || //
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(currentTime.equals(stopTime) && multiplier < 0);
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}
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if (!result) {
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clockViewModel.shouldAnimate = false;
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}
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return result;
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});
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this._isSystemTimeAvailable = undefined;
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knockout.defineProperty(this, '_isSystemTimeAvailable', function() {
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var clockViewModel = that._clockViewModel;
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var clockRange = clockViewModel.clockRange;
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if (clockRange === ClockRange.UNBOUNDED) {
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return true;
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}
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var systemTime = clockViewModel.systemTime;
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return JulianDate.greaterThanOrEquals(systemTime, clockViewModel.startTime) && JulianDate.lessThanOrEquals(systemTime, clockViewModel.stopTime);
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});
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this._isAnimating = undefined;
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knockout.defineProperty(this, '_isAnimating', function() {
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return that._clockViewModel.shouldAnimate && (that._canAnimate || that.shuttleRingDragging);
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});
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var pauseCommand = createCommand(function() {
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var clockViewModel = that._clockViewModel;
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if (clockViewModel.shouldAnimate) {
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clockViewModel.shouldAnimate = false;
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} else if (that._canAnimate) {
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clockViewModel.shouldAnimate = true;
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}
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});
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this._pauseViewModel = new ToggleButtonViewModel(pauseCommand, {
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toggled : knockout.computed(function() {
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return !that._isAnimating;
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}),
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tooltip : 'Pause'
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});
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var playReverseCommand = createCommand(function() {
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var clockViewModel = that._clockViewModel;
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var multiplier = clockViewModel.multiplier;
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if (multiplier > 0) {
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clockViewModel.multiplier = -multiplier;
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}
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clockViewModel.shouldAnimate = true;
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});
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this._playReverseViewModel = new ToggleButtonViewModel(playReverseCommand, {
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toggled : knockout.computed(function() {
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return that._isAnimating && (clockViewModel.multiplier < 0);
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}),
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tooltip : 'Play Reverse'
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});
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var playForwardCommand = createCommand(function() {
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var clockViewModel = that._clockViewModel;
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var multiplier = clockViewModel.multiplier;
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if (multiplier < 0) {
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clockViewModel.multiplier = -multiplier;
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}
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clockViewModel.shouldAnimate = true;
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});
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this._playForwardViewModel = new ToggleButtonViewModel(playForwardCommand, {
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toggled : knockout.computed(function() {
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return that._isAnimating && clockViewModel.multiplier > 0 && clockViewModel.clockStep !== ClockStep.SYSTEM_CLOCK;
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}),
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tooltip : 'Play Forward'
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});
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var playRealtimeCommand = createCommand(function() {
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that._clockViewModel.clockStep = ClockStep.SYSTEM_CLOCK;
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}, knockout.getObservable(this, '_isSystemTimeAvailable'));
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this._playRealtimeViewModel = new ToggleButtonViewModel(playRealtimeCommand, {
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toggled : knockout.computed(function() {
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return clockViewModel.clockStep === ClockStep.SYSTEM_CLOCK;
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}),
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tooltip : knockout.computed(function() {
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return that._isSystemTimeAvailable ? 'Today (real-time)' : 'Current time not in range';
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})
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});
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this._slower = createCommand(function() {
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var clockViewModel = that._clockViewModel;
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var shuttleRingTicks = that._allShuttleRingTicks;
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var multiplier = clockViewModel.multiplier;
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var index = getTypicalMultiplierIndex(multiplier, shuttleRingTicks) - 1;
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if (index >= 0) {
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clockViewModel.multiplier = shuttleRingTicks[index];
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}
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});
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this._faster = createCommand(function() {
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var clockViewModel = that._clockViewModel;
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var shuttleRingTicks = that._allShuttleRingTicks;
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var multiplier = clockViewModel.multiplier;
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var index = getTypicalMultiplierIndex(multiplier, shuttleRingTicks) + 1;
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if (index < shuttleRingTicks.length) {
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clockViewModel.multiplier = shuttleRingTicks[index];
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}
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});
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}
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/**
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* Gets or sets the default date formatter used by new instances.
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*
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* @member
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* @type {AnimationViewModel~DateFormatter}
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*/
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AnimationViewModel.defaultDateFormatter = function(date, viewModel) {
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var gregorianDate = JulianDate.toGregorianDate(date);
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return monthNames[gregorianDate.month - 1] + ' ' + gregorianDate.day + ' ' + gregorianDate.year;
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};
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/**
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* Gets or sets the default array of known clock multipliers associated with new instances of the shuttle ring.
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* @type {Number[]}
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*/
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AnimationViewModel.defaultTicks = [//
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0.001, 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.25, 0.5, 1.0, 2.0, 5.0, 10.0,//
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15.0, 30.0, 60.0, 120.0, 300.0, 600.0, 900.0, 1800.0, 3600.0, 7200.0, 14400.0,//
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21600.0, 43200.0, 86400.0, 172800.0, 345600.0, 604800.0];
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/**
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* Gets or sets the default time formatter used by new instances.
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*
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* @member
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* @type {AnimationViewModel~TimeFormatter}
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*/
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AnimationViewModel.defaultTimeFormatter = function(date, viewModel) {
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var gregorianDate = JulianDate.toGregorianDate(date);
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var millisecond = Math.round(gregorianDate.millisecond);
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if (Math.abs(viewModel._clockViewModel.multiplier) < 1) {
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return sprintf('%02d:%02d:%02d.%03d', gregorianDate.hour, gregorianDate.minute, gregorianDate.second, millisecond);
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}
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return sprintf('%02d:%02d:%02d UTC', gregorianDate.hour, gregorianDate.minute, gregorianDate.second);
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};
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/**
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* Gets a copy of the array of positive known clock multipliers to associate with the shuttle ring.
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*
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* @returns {Number[]} The array of known clock multipliers associated with the shuttle ring.
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*/
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AnimationViewModel.prototype.getShuttleRingTicks = function() {
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return this._sortedFilteredPositiveTicks.slice(0);
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};
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/**
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* Sets the array of positive known clock multipliers to associate with the shuttle ring.
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* These values will have negative equivalents created for them and sets both the minimum
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* and maximum range of values for the shuttle ring as well as the values that are snapped
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* to when a single click is made. The values need not be in order, as they will be sorted
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* automatically, and duplicate values will be removed.
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*
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* @param {Number[]} positiveTicks The list of known positive clock multipliers to associate with the shuttle ring.
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*/
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AnimationViewModel.prototype.setShuttleRingTicks = function(positiveTicks) {
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//>>includeStart('debug', pragmas.debug);
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if (!defined(positiveTicks)) {
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throw new DeveloperError('positiveTicks is required.');
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}
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//>>includeEnd('debug');
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var i;
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var len;
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var tick;
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var hash = {};
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var sortedFilteredPositiveTicks = this._sortedFilteredPositiveTicks;
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sortedFilteredPositiveTicks.length = 0;
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for (i = 0, len = positiveTicks.length; i < len; ++i) {
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tick = positiveTicks[i];
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//filter duplicates
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if (!hash.hasOwnProperty(tick)) {
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hash[tick] = true;
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sortedFilteredPositiveTicks.push(tick);
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}
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}
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sortedFilteredPositiveTicks.sort(numberComparator);
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var allTicks = [];
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for (len = sortedFilteredPositiveTicks.length, i = len - 1; i >= 0; --i) {
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tick = sortedFilteredPositiveTicks[i];
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if (tick !== 0) {
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allTicks.push(-tick);
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}
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}
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Array.prototype.push.apply(allTicks, sortedFilteredPositiveTicks);
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this._allShuttleRingTicks = allTicks;
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};
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defineProperties(AnimationViewModel.prototype, {
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/**
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* Gets a command that decreases the speed of animation.
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* @memberof AnimationViewModel.prototype
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* @type {Command}
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*/
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slower : {
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get : function() {
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return this._slower;
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}
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},
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/**
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* Gets a command that increases the speed of animation.
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* @memberof AnimationViewModel.prototype
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* @type {Command}
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*/
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faster : {
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get : function() {
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return this._faster;
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}
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},
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/**
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* Gets the clock view model.
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* @memberof AnimationViewModel.prototype
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*
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* @type {ClockViewModel}
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*/
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clockViewModel : {
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get : function() {
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return this._clockViewModel;
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}
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},
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/**
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* Gets the pause toggle button view model.
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* @memberof AnimationViewModel.prototype
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*
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* @type {ToggleButtonViewModel}
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*/
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pauseViewModel : {
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get : function() {
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return this._pauseViewModel;
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}
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},
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/**
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* Gets the reverse toggle button view model.
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* @memberof AnimationViewModel.prototype
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*
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* @type {ToggleButtonViewModel}
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*/
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playReverseViewModel : {
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get : function() {
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return this._playReverseViewModel;
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}
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},
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/**
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* Gets the play toggle button view model.
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* @memberof AnimationViewModel.prototype
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*
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* @type {ToggleButtonViewModel}
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*/
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playForwardViewModel : {
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get : function() {
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return this._playForwardViewModel;
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}
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},
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/**
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* Gets the realtime toggle button view model.
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* @memberof AnimationViewModel.prototype
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*
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* @type {ToggleButtonViewModel}
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*/
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playRealtimeViewModel : {
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get : function() {
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return this._playRealtimeViewModel;
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}
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},
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/**
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* Gets or sets the function which formats a date for display.
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* @memberof AnimationViewModel.prototype
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*
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* @type {AnimationViewModel~DateFormatter}
|
|
* @default AnimationViewModel.defaultDateFormatter
|
|
*/
|
|
dateFormatter : {
|
|
//TODO:@exception {DeveloperError} dateFormatter must be a function.
|
|
get : function() {
|
|
return this._dateFormatter;
|
|
},
|
|
set : function(dateFormatter) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
if (typeof dateFormatter !== 'function') {
|
|
throw new DeveloperError('dateFormatter must be a function');
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
this._dateFormatter = dateFormatter;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Gets or sets the function which formats a time for display.
|
|
* @memberof AnimationViewModel.prototype
|
|
*
|
|
* @type {AnimationViewModel~TimeFormatter}
|
|
* @default AnimationViewModel.defaultTimeFormatter
|
|
*/
|
|
timeFormatter : {
|
|
//TODO:@exception {DeveloperError} timeFormatter must be a function.
|
|
get : function() {
|
|
return this._timeFormatter;
|
|
},
|
|
set : function(timeFormatter) {
|
|
//>>includeStart('debug', pragmas.debug);
|
|
if (typeof timeFormatter !== 'function') {
|
|
throw new DeveloperError('timeFormatter must be a function');
|
|
}
|
|
//>>includeEnd('debug');
|
|
|
|
this._timeFormatter = timeFormatter;
|
|
}
|
|
}
|
|
});
|
|
|
|
//Currently exposed for tests.
|
|
AnimationViewModel._maxShuttleRingAngle = maxShuttleRingAngle;
|
|
AnimationViewModel._realtimeShuttleRingAngle = realtimeShuttleRingAngle;
|
|
|
|
/**
|
|
* A function that formats a date for display.
|
|
* @callback AnimationViewModel~DateFormatter
|
|
*
|
|
* @param {JulianDate} date The date to be formatted
|
|
* @param {AnimationViewModel} viewModel The AnimationViewModel instance requesting formatting.
|
|
* @returns {String} The string representation of the calendar date portion of the provided date.
|
|
*/
|
|
|
|
/**
|
|
* A function that formats a time for display.
|
|
* @callback AnimationViewModel~TimeFormatter
|
|
*
|
|
* @param {JulianDate} date The date to be formatted
|
|
* @param {AnimationViewModel} viewModel The AnimationViewModel instance requesting formatting.
|
|
* @returns {String} The string representation of the time portion of the provided date.
|
|
*/
|
|
|
|
return AnimationViewModel;
|
|
});
|