2014-10-03 02:43:56 +00:00
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/*
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The MIT License (MIT)
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Copyright (c) 2014 Alex Yatskov
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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2014-09-27 01:10:45 +00:00
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(function(grapher) {
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2014-09-28 07:58:56 +00:00
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'use strict';
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2014-09-27 01:10:45 +00:00
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//
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// Range
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//
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2014-09-27 01:05:48 +00:00
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2014-11-08 02:48:10 +00:00
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function Range(min, max) {
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this.min = Math.min(min, max);
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this.max = Math.max(min, max);
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2014-09-27 01:05:48 +00:00
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2014-11-05 07:47:20 +00:00
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this.contains = function(value) {
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return value >= this.min && value <= this.max;
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};
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2014-09-27 01:05:48 +00:00
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2014-11-05 07:32:41 +00:00
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this.length = function() {
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return this.max - this.min;
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};
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2014-09-27 01:05:48 +00:00
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this.clamp = function(value) {
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if (value < this.min) {
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return this.min;
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2014-09-27 01:10:45 +00:00
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}
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2014-09-27 01:05:48 +00:00
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2014-11-08 02:48:10 +00:00
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if (value > this.max) {
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return this.max;
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2014-09-27 01:10:45 +00:00
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}
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2014-09-27 01:10:45 +00:00
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return value;
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};
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this.include = function(range) {
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this.min = Math.min(this.min, range.min);
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this.max = Math.max(this.max, range.max);
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};
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this.offset = function(value) {
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return (value - this.min) / this.length();
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};
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this.project = function(value) {
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return this.min + this.length() * value;
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};
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2014-09-27 01:05:48 +00:00
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}
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2014-09-27 01:10:45 +00:00
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//
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// Column
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//
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function Column(params) {
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var _backdropColor = '#eeeeec';
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var _borderColor = '#babdb6';
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var _fillColorNeg = '#3465a4';
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var _fillColorPos = '#cc0000';
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var _panelColor = '#babdb6';
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var _tickColor = '#888a85';
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var _densitySize = 10;
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var _desatOffset = -0.3;
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var _height = 500;
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var _padding = 10;
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var _panelSize = 20;
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var _tickSize = 5;
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var _width = 125;
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var _easeTime = 200;
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var _animation = null;
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var _canvas = params.canvas;
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var _data = params.data;
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var _index = params.index;
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var _name = params.name;
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var _valueAnimated = params.data.value;
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var _onValueChanged = params.onValueChanged;
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var _range = params.range;
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var _scale = params.scale;
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var _steps = params.steps;
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var _elements = {};
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function createShapes() {
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// backdrop
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_elements.backdrop = _canvas.rect(
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_tickSize, 0, _width - (_densitySize + _tickSize), _height - _panelSize
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).attr({cursor: 'crosshair', stroke: _borderColor, fill: _backdropColor}).click(clicked);
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2014-11-01 06:43:03 +00:00
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// density
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_elements.density = _canvas.rect(
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_width - _densitySize, 0, _densitySize, _height - _panelSize
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).attr({stroke: _borderColor});
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// panel
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_elements.panel = _canvas.rect( _tickSize,
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_height - _panelSize, _width - _tickSize, _panelSize
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).attr({fill: _panelColor});
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// label
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_elements.label = _canvas.text(
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_tickSize + (_width - _tickSize) / 2, _height - _panelSize / 2, _name
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).attr({'dominant-baseline': 'middle', 'text-anchor': 'middle'});
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// indicator
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var range = computeIndicatorRange(_data.value);
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_elements.indicator = _canvas.rect(
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_tickSize, range.min, _width - (_densitySize + _tickSize), (range.max - range.min)
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).attr({cursor: 'crosshair', fill: computeIndicatorColor()}).click(clicked);
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// tick
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if (_range.contains(0.0)) {
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var origin = valueToIndicator(0.0);
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_elements.tick = _canvas.line(0, origin, _width - _densitySize, origin
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).attr({stroke: _tickColor});
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}
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_elements.group = _canvas.group(
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_elements.backdrop,
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_elements.indicator,
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_elements.density,
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_elements.panel,
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_elements.tick,
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_elements.label
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);
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_elements.group.transform(
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Snap.format('t{x},{y}', {x: _index * (_width + _padding), y: 0})
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);
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updateDensity();
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}
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function updateIndicator(value) {
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var range = computeIndicatorRange(value);
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_elements.indicator.attr({
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y: range.min,
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height: range.max - range.min,
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fill: computeIndicatorColor(value)
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});
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_valueAnimated = value;
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}
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function updateDensity() {
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var fill = _data.hints.length === 0 ? _backdropColor : _canvas.gradient(decimateHints());
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_elements.density.attr({ fill: fill });
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}
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2014-10-31 08:00:12 +00:00
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function decimateHints() {
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var colorStops = 'l(0,0,0,1)';
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var groups = groupHints();
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for (var i = 0, count = groups.length; i < count; ++i) {
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var groupSize = groups[i];
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var colorPercent = 0;
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if (_scale.length() > 0) {
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colorPercent = Math.max(0, groupSize - _scale.min) / _scale.length();
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}
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2014-09-27 01:10:45 +00:00
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var colorByte = 0xff - Math.min(0xff, Math.round(0xff * colorPercent));
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var colorObj = tinycolor({ r: colorByte, g: colorByte, b: colorByte });
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var colorStr = colorObj.toHexString();
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colorStops += colorStr;
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if (i + 1 < count) {
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colorStops += '-';
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}
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}
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return colorStops;
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}
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function groupHints() {
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var stepSize = _range.length() / _steps;
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var hintGroups = [];
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for (var i = 0; i < _steps; ++i) {
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var stepMax = _range.max - stepSize * i;
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var stepMin = stepMax - stepSize;
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var hintCount = 0;
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for (var j = 0, count = _data.hints.length; j < count; ++j) {
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var hint = _data.hints[j];
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if (hint.sample > stepMin && hint.sample <= stepMax) {
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hintCount += hint.count;
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}
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}
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hintGroups.push(hintCount);
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}
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return hintGroups;
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}
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2014-11-05 11:14:15 +00:00
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function updateValue(value) {
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_data.value = _range.clamp(value);
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if (_onValueChanged) {
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_onValueChanged(_name, _data.value);
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}
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2014-11-08 10:53:13 +00:00
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}
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2014-11-08 11:10:51 +00:00
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function animateIndicator(valueOld, valueNew) {
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if (valueOld === valueNew) {
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return;
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}
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if (_animation !== null) {
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_animation.stop();
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}
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_animation = Snap.animate(
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valueOld,
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valueNew,
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function(value) {
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updateIndicator(value);
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},
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_easeTime,
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mina.linear,
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function() {
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2014-11-08 11:11:16 +00:00
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updateDensity();
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_animation = null;
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2014-11-08 10:53:13 +00:00
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}
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);
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}
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2014-07-08 04:35:52 +00:00
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2014-11-08 11:10:51 +00:00
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function valueColorAdjust(value, color, offset) {
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var colorObj = tinycolor(color);
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var rangeEnd = value >= 0.0 ? _range.max : _range.min;
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var rangeMid = (_range.min + _range.max) / 2.0;
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var rangeRat = (value - rangeMid) / (rangeEnd - rangeMid);
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var desatVal = Math.max(0.0, 1.0 - rangeRat + offset) * 100.0;
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return colorObj.desaturate(desatVal).toHexString();
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}
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2014-11-08 11:10:51 +00:00
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function computeIndicatorColor(value) {
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var color = value >= 0.0 ? _fillColorPos : _fillColorNeg;
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return valueColorAdjust(value, color, _desatOffset);
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}
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function computeIndicatorRange(value) {
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return new Range(valueToIndicator(0.0), valueToIndicator(value));
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}
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function valueToIndicator(scalar) {
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var box = _elements.backdrop.getBBox();
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2014-11-05 08:48:07 +00:00
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var offset = _range.offset(scalar);
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2014-11-05 07:32:41 +00:00
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return box.y + box.height * (1.0 - offset);
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}
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2014-11-05 08:48:07 +00:00
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function indicatorToValue(scalar) {
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var box = _elements.backdrop.getBBox();
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var range = new Range(box.y, box.y + box.height);
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return -_range.project(range.offset(scalar));
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}
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function clicked(event, x, y) {
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2014-11-09 03:31:52 +00:00
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if (_animation === null) {
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2014-11-05 11:14:15 +00:00
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var rect = _canvas.node.getBoundingClientRect();
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updateValue(indicatorToValue(y - rect.top));
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}
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2014-11-05 08:48:07 +00:00
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}
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2014-10-31 08:00:12 +00:00
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this.update = function(data, scale) {
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2014-11-08 11:10:51 +00:00
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_data = data;
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_scale = scale;
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2014-11-08 10:53:13 +00:00
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2014-11-09 02:10:12 +00:00
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animateIndicator(_valueAnimated, _data.value);
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2014-09-27 01:10:45 +00:00
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};
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2014-11-01 06:43:03 +00:00
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createShapes();
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2014-07-08 04:35:52 +00:00
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}
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2014-09-27 01:10:45 +00:00
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//
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// Grapher
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//
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2014-07-08 04:35:52 +00:00
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2014-10-31 02:00:43 +00:00
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grapher.Grapher = function(params) {
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2014-10-31 07:32:10 +00:00
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var _canvas = params.canvas;
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var _columns = {};
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var _data = {};
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2014-11-08 02:23:42 +00:00
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var _range = new Range(params.range.min || -1.0, params.range.max || 1.0);
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2014-10-31 07:32:10 +00:00
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var _steps = params.steps || 20;
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var _useLocalScale = params.useLocalScale || true;
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var _useRelativeScale = params.useRelativeScale || true;
|
2014-10-31 07:36:20 +00:00
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var _onValueChanged = params.onValueChanged;
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2014-10-31 07:32:10 +00:00
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function computeLocalScale(hints) {
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var counts = _.pluck(hints, 'count');
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var min = _useRelativeScale ? _.min(counts) : 0;
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return new Range(min, _.max(counts));
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}
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function computeGlobalScale(hintData) {
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var globalScale = null;
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for (var i = 0, count = hintData.length; i < count; ++i) {
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var localScale = computeLocalScale(hintData[i]);
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|
if (globalScale) {
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globalScale.include(localScale);
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}
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else {
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globalScale = localScale;
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}
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}
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return globalScale;
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|
}
|
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|
2014-09-27 01:10:45 +00:00
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|
this.setColumns = function(columns) {
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|
var scale = 0;
|
2014-10-31 07:32:10 +00:00
|
|
|
if (!_useLocalScale) {
|
2014-10-31 02:00:43 +00:00
|
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|
var hintData = _.pluck(columns, 'hints');
|
2014-10-31 07:32:10 +00:00
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|
scale = computeGlobalScale(hintData);
|
2014-09-27 01:10:45 +00:00
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|
|
}
|
2014-07-08 04:35:52 +00:00
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|
2014-10-31 06:25:59 +00:00
|
|
|
var index = 0;
|
2014-10-31 02:00:43 +00:00
|
|
|
for (var name in columns) {
|
2014-10-31 07:32:10 +00:00
|
|
|
var data = _data[name] = columns[name];
|
|
|
|
if (_useLocalScale) {
|
|
|
|
scale = computeLocalScale(data.hints);
|
2014-09-27 01:10:45 +00:00
|
|
|
}
|
2014-07-08 04:35:52 +00:00
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|
2014-10-31 07:32:10 +00:00
|
|
|
var column = _columns[name];
|
2014-10-31 02:00:43 +00:00
|
|
|
if (column) {
|
2014-10-31 02:15:51 +00:00
|
|
|
column.update(data, scale);
|
2014-09-27 01:10:45 +00:00
|
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|
}
|
2014-10-31 02:00:43 +00:00
|
|
|
else {
|
2014-10-31 07:32:10 +00:00
|
|
|
_columns[name] = new Column({
|
2014-10-31 07:36:20 +00:00
|
|
|
onValueChanged: _onValueChanged,
|
|
|
|
steps: _steps,
|
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|
|
range: _range,
|
|
|
|
canvas: _canvas,
|
|
|
|
data: data,
|
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|
|
name: name,
|
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|
|
scale: scale,
|
|
|
|
index: index++,
|
2014-10-31 02:51:11 +00:00
|
|
|
});
|
2014-10-31 02:00:43 +00:00
|
|
|
}
|
|
|
|
}
|
2014-09-28 07:58:56 +00:00
|
|
|
};
|
2014-07-08 04:35:52 +00:00
|
|
|
|
2014-09-27 01:10:45 +00:00
|
|
|
this.setUseLocalScale = function(useLocalScale) {
|
2014-10-31 07:32:10 +00:00
|
|
|
if (useLocalScale != _useLocalScale) {
|
|
|
|
_useLocalScale = useLocalScale;
|
|
|
|
this.setColumns(_data);
|
2014-09-27 01:10:45 +00:00
|
|
|
}
|
2014-09-28 07:58:56 +00:00
|
|
|
};
|
2014-07-08 04:35:52 +00:00
|
|
|
|
2014-09-27 01:10:45 +00:00
|
|
|
this.setUseRelativeScale = function(useRelativeScale) {
|
2014-10-31 07:32:10 +00:00
|
|
|
if (useRelativeScale != _useRelativeScale) {
|
|
|
|
_useRelativeScale = useRelativeScale;
|
|
|
|
this.setColumns(_data);
|
2014-09-27 01:10:45 +00:00
|
|
|
}
|
2014-09-28 07:58:56 +00:00
|
|
|
};
|
|
|
|
};
|
2014-09-27 01:10:45 +00:00
|
|
|
}(window.grapher = window.grapher || {}));
|