You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
3261 lines
117 KiB
JavaScript
3261 lines
117 KiB
JavaScript
/**
|
|
* @license Highcharts JS v6.0.4 (2017-12-15)
|
|
* Boost module
|
|
*
|
|
* (c) 2010-2017 Highsoft AS
|
|
* Author: Torstein Honsi
|
|
*
|
|
* License: www.highcharts.com/license
|
|
*/
|
|
'use strict';
|
|
(function(factory) {
|
|
if (typeof module === 'object' && module.exports) {
|
|
module.exports = factory;
|
|
} else {
|
|
factory(Highcharts);
|
|
}
|
|
}(function(Highcharts) {
|
|
(function(H) {
|
|
/**
|
|
* License: www.highcharts.com/license
|
|
* Author: Christer Vasseng, Torstein Honsi
|
|
*
|
|
* This is an experimental Highcharts module that draws long data series on a canvas
|
|
* in order to increase performance of the initial load time and tooltip responsiveness.
|
|
*
|
|
* Compatible with WebGL compatible browsers (not IE < 11).
|
|
*
|
|
* Development plan
|
|
* - Column range.
|
|
* - Check how it works with Highstock and data grouping. Currently it only works when navigator.adaptToUpdatedData
|
|
* is false. It is also recommended to set scrollbar.liveRedraw to false.
|
|
* - Check inverted charts.
|
|
* - Chart callback should be async after last series is drawn. (But not necessarily, we don't do
|
|
that with initial series animation).
|
|
*
|
|
* If this module is taken in as part of the core
|
|
* - All the loading logic should be merged with core. Update styles in the core.
|
|
* - Most of the method wraps should probably be added directly in parent methods.
|
|
*
|
|
* Notes for boost mode
|
|
* - Area lines are not drawn
|
|
* - Lines are not drawn on scatter charts
|
|
* - Zones and negativeColor don't work
|
|
* - Dash styles are not rendered on lines.
|
|
* - Columns are always one pixel wide. Don't set the threshold too low.
|
|
* - Disable animations
|
|
* - Marker shapes are not supported: markers will always be circles
|
|
*
|
|
* Optimizing tips for users
|
|
* - Set extremes (min, max) explicitly on the axes in order for Highcharts to avoid computing extremes.
|
|
* - Set enableMouseTracking to false on the series to improve total rendering time.
|
|
* - The default threshold is set based on one series. If you have multiple, dense series, the combined
|
|
* number of points drawn gets higher, and you may want to set the threshold lower in order to
|
|
* use optimizations.
|
|
* - If drawing large scatter charts, it's beneficial to set the marker radius to a value
|
|
* less than 1. This is to add additional spacing to make the chart more readable.
|
|
* - If the value increments on both the X and Y axis aren't small, consider setting
|
|
* useGPUTranslations to true on the boost settings object. If you do this and
|
|
* the increments are small (e.g. datetime axis with small time increments)
|
|
* it may cause rendering issues due to floating point rounding errors,
|
|
* so your millage may vary.
|
|
*
|
|
* Settings
|
|
* There are two ways of setting the boost threshold:
|
|
* - Per. series: boost based on number of points in individual series
|
|
* - Per. chart: boost based on the number of series
|
|
*
|
|
* To set the series boost threshold, set seriesBoostThreshold on the chart object.
|
|
* To set the series-specific threshold, set boostThreshold on the series object.
|
|
*
|
|
* In addition, the following can be set in the boost object:
|
|
* {
|
|
* //Wether or not to use alpha blending
|
|
* useAlpha: boolean - default: true
|
|
* //Set to true to perform translations on the GPU.
|
|
* //Much faster, but may cause rendering issues
|
|
* //when using values far from 0 due to floating point
|
|
* //rounding issues
|
|
* useGPUTranslations: boolean - default: false
|
|
* //Use pre-allocated buffers, much faster,
|
|
* //but may cause rendering issues with some data sets
|
|
* usePreallocated: boolean - default: false
|
|
* }
|
|
*/
|
|
|
|
/**
|
|
* Options for the Boost module. The Boost module allows certain series types
|
|
* to be rendered by WebGL instead of the default SVG. This allows hundreds of
|
|
* thousands of data points to be rendered in milliseconds. In addition to the
|
|
* WebGL rendering it saves time by skipping processing and inspection of the
|
|
* data wherever possible. This introduces some limitations to what features are
|
|
* available in Boost mode. See [the docs](https://www.highcharts.com/docs/advanced-chart-features/boost-module)
|
|
* for details.
|
|
*
|
|
* In addition to the global `boost` option, each series has a
|
|
* [boostThreshold](#plotOptions.series.boostThreshold) that defines when the
|
|
* boost should kick in.
|
|
*
|
|
* Requires the `modules/boost.js` module.
|
|
*
|
|
* @sample {highstock} highcharts/boost/line-series-heavy-stock
|
|
* Stock chart
|
|
* @sample {highstock} highcharts/boost/line-series-heavy-dynamic
|
|
* Dynamic stock chart
|
|
* @sample highcharts/boost/line
|
|
* Line chart
|
|
* @sample highcharts/boost/line-series-heavy
|
|
* Line chart with hundreds of series
|
|
* @sample highcharts/boost/scatter
|
|
* Scatter chart
|
|
* @sample highcharts/boost/area
|
|
* Area chart
|
|
* @sample highcharts/boost/arearange
|
|
* Arearange chart
|
|
* @sample highcharts/boost/column
|
|
* Column chart
|
|
* @sample highcharts/boost/bubble
|
|
* Bubble chart
|
|
* @sample highcharts/boost/heatmap
|
|
* Heat map
|
|
* @sample highcharts/boost/treemap
|
|
* Tree map
|
|
*
|
|
* @product highcharts highstock
|
|
* @type {Object}
|
|
* @apioption boost
|
|
*/
|
|
|
|
/**
|
|
* Set the series threshold for when the boost should kick in globally.
|
|
*
|
|
* Setting to e.g. 20 will cause the whole chart to enter boost mode
|
|
* if there are 20 or more series active. When the chart is in boost mode,
|
|
* every series in it will be rendered to a common canvas. This offers
|
|
* a significant speed improvment in charts with a very high
|
|
* amount of series.
|
|
*
|
|
* @type {Number}
|
|
* @default null
|
|
* @apioption boost.seriesThreshold
|
|
*/
|
|
|
|
/**
|
|
* Enable or disable boost on a chart.
|
|
*
|
|
* @type {Boolean}
|
|
* @default true
|
|
* @apioption boost.enabled
|
|
*/
|
|
|
|
/**
|
|
* Debugging options for boost.
|
|
* Useful for benchmarking, and general timing.
|
|
*
|
|
* @type {Object}
|
|
* @apioption boost.debug
|
|
*/
|
|
|
|
/**
|
|
* Time the series rendering.
|
|
*
|
|
* This outputs the time spent on actual rendering in the console when
|
|
* set to true.
|
|
*
|
|
* @type {Boolean}
|
|
* @default false
|
|
* @apioption boost.debug.timeRendering
|
|
*/
|
|
|
|
/**
|
|
* Time the series processing.
|
|
*
|
|
* This outputs the time spent on transforming the series data to
|
|
* vertex buffers when set to true.
|
|
*
|
|
* @type {Boolean}
|
|
* @default false
|
|
* @apioption boost.debug.timeSeriesProcessing
|
|
*/
|
|
|
|
/**
|
|
* Time the the WebGL setup.
|
|
*
|
|
* This outputs the time spent on setting up the WebGL context,
|
|
* creating shaders, and textures.
|
|
*
|
|
* @type {Boolean}
|
|
* @default false
|
|
* @apioption boost.debug.timeSetup
|
|
*/
|
|
|
|
/**
|
|
* Time the building of the k-d tree.
|
|
*
|
|
* This outputs the time spent building the k-d tree used for
|
|
* markers etc.
|
|
*
|
|
* Note that the k-d tree is built async, and runs post-rendering.
|
|
* Following, it does not affect the performance of the rendering itself.
|
|
*
|
|
* @type {Boolean}
|
|
* @default false
|
|
* @apioption boost.debug.timeKDTree
|
|
*/
|
|
|
|
/**
|
|
* Show the number of points skipped through culling.
|
|
*
|
|
* When set to true, the number of points skipped in series processing
|
|
* is outputted. Points are skipped if they are closer than 1 pixel from
|
|
* each other.
|
|
*
|
|
* @type {Boolean}
|
|
* @default false
|
|
* @apioption boost.debug.showSkipSummary
|
|
*/
|
|
|
|
/**
|
|
* Time the WebGL to SVG buffer copy
|
|
*
|
|
* After rendering, the result is copied to an image which is injected
|
|
* into the SVG.
|
|
*
|
|
* If this property is set to true, the time it takes for the buffer copy
|
|
* to complete is outputted.
|
|
*
|
|
* @type {Boolean}
|
|
* @default false
|
|
* @apioption boost.debug.timeBufferCopy
|
|
*/
|
|
|
|
/**
|
|
* Enable or disable GPU translations. GPU translations are faster than doing
|
|
* the translation in JavaScript.
|
|
*
|
|
* This option may cause rendering issues with certain datasets.
|
|
* Namely, if your dataset has large numbers with small increments (such as
|
|
* timestamps), it won't work correctly. This is due to floating point
|
|
* precission.
|
|
*
|
|
* @type {Boolean}
|
|
* @default false
|
|
* @apioption boost.useGPUTranslations
|
|
*/
|
|
|
|
/**
|
|
* Set the point threshold for when a series should enter boost mode.
|
|
*
|
|
* Setting it to e.g. 2000 will cause the series to enter boost mode when there
|
|
* are 2000 or more points in the series.
|
|
*
|
|
* To disable boosting on the series, set the `boostThreshold` to 0. Setting it
|
|
* to 1 will force boosting.
|
|
*
|
|
* Requires `modules/boost.js`.
|
|
*
|
|
* @type {Number}
|
|
* @default 5000
|
|
* @apioption plotOptions.series.boostThreshold
|
|
*/
|
|
|
|
/**
|
|
* If set to true, the whole chart will be boosted if one of the series
|
|
* crosses its threshold, and all the series can be boosted.
|
|
*
|
|
* @type {Boolean}
|
|
* @default true
|
|
* @apioption boost.allowForce
|
|
*/
|
|
|
|
/* global Float32Array */
|
|
|
|
|
|
var win = H.win,
|
|
doc = win.document,
|
|
noop = function() {},
|
|
Chart = H.Chart,
|
|
Color = H.Color,
|
|
Series = H.Series,
|
|
seriesTypes = H.seriesTypes,
|
|
each = H.each,
|
|
extend = H.extend,
|
|
addEvent = H.addEvent,
|
|
fireEvent = H.fireEvent,
|
|
grep = H.grep,
|
|
isNumber = H.isNumber,
|
|
merge = H.merge,
|
|
pick = H.pick,
|
|
wrap = H.wrap,
|
|
plotOptions = H.getOptions().plotOptions,
|
|
CHUNK_SIZE = 30000,
|
|
mainCanvas = doc.createElement('canvas'),
|
|
index,
|
|
boostable = [
|
|
'area',
|
|
'arearange',
|
|
'column',
|
|
'bar',
|
|
'line',
|
|
'scatter',
|
|
'heatmap',
|
|
'bubble',
|
|
'treemap'
|
|
],
|
|
boostableMap = {};
|
|
|
|
each(boostable, function(item) {
|
|
boostableMap[item] = 1;
|
|
});
|
|
|
|
// Register color names since GL can't render those directly.
|
|
Color.prototype.names = {
|
|
aliceblue: '#f0f8ff',
|
|
antiquewhite: '#faebd7',
|
|
aqua: '#00ffff',
|
|
aquamarine: '#7fffd4',
|
|
azure: '#f0ffff',
|
|
beige: '#f5f5dc',
|
|
bisque: '#ffe4c4',
|
|
black: '#000000',
|
|
blanchedalmond: '#ffebcd',
|
|
blue: '#0000ff',
|
|
blueviolet: '#8a2be2',
|
|
brown: '#a52a2a',
|
|
burlywood: '#deb887',
|
|
cadetblue: '#5f9ea0',
|
|
chartreuse: '#7fff00',
|
|
chocolate: '#d2691e',
|
|
coral: '#ff7f50',
|
|
cornflowerblue: '#6495ed',
|
|
cornsilk: '#fff8dc',
|
|
crimson: '#dc143c',
|
|
cyan: '#00ffff',
|
|
darkblue: '#00008b',
|
|
darkcyan: '#008b8b',
|
|
darkgoldenrod: '#b8860b',
|
|
darkgray: '#a9a9a9',
|
|
darkgreen: '#006400',
|
|
darkkhaki: '#bdb76b',
|
|
darkmagenta: '#8b008b',
|
|
darkolivegreen: '#556b2f',
|
|
darkorange: '#ff8c00',
|
|
darkorchid: '#9932cc',
|
|
darkred: '#8b0000',
|
|
darksalmon: '#e9967a',
|
|
darkseagreen: '#8fbc8f',
|
|
darkslateblue: '#483d8b',
|
|
darkslategray: '#2f4f4f',
|
|
darkturquoise: '#00ced1',
|
|
darkviolet: '#9400d3',
|
|
deeppink: '#ff1493',
|
|
deepskyblue: '#00bfff',
|
|
dimgray: '#696969',
|
|
dodgerblue: '#1e90ff',
|
|
feldspar: '#d19275',
|
|
firebrick: '#b22222',
|
|
floralwhite: '#fffaf0',
|
|
forestgreen: '#228b22',
|
|
fuchsia: '#ff00ff',
|
|
gainsboro: '#dcdcdc',
|
|
ghostwhite: '#f8f8ff',
|
|
gold: '#ffd700',
|
|
goldenrod: '#daa520',
|
|
gray: '#808080',
|
|
green: '#008000',
|
|
greenyellow: '#adff2f',
|
|
honeydew: '#f0fff0',
|
|
hotpink: '#ff69b4',
|
|
indianred: '#cd5c5c',
|
|
indigo: '#4b0082',
|
|
ivory: '#fffff0',
|
|
khaki: '#f0e68c',
|
|
lavender: '#e6e6fa',
|
|
lavenderblush: '#fff0f5',
|
|
lawngreen: '#7cfc00',
|
|
lemonchiffon: '#fffacd',
|
|
lightblue: '#add8e6',
|
|
lightcoral: '#f08080',
|
|
lightcyan: '#e0ffff',
|
|
lightgoldenrodyellow: '#fafad2',
|
|
lightgrey: '#d3d3d3',
|
|
lightgreen: '#90ee90',
|
|
lightpink: '#ffb6c1',
|
|
lightsalmon: '#ffa07a',
|
|
lightseagreen: '#20b2aa',
|
|
lightskyblue: '#87cefa',
|
|
lightslateblue: '#8470ff',
|
|
lightslategray: '#778899',
|
|
lightsteelblue: '#b0c4de',
|
|
lightyellow: '#ffffe0',
|
|
lime: '#00ff00',
|
|
limegreen: '#32cd32',
|
|
linen: '#faf0e6',
|
|
magenta: '#ff00ff',
|
|
maroon: '#800000',
|
|
mediumaquamarine: '#66cdaa',
|
|
mediumblue: '#0000cd',
|
|
mediumorchid: '#ba55d3',
|
|
mediumpurple: '#9370d8',
|
|
mediumseagreen: '#3cb371',
|
|
mediumslateblue: '#7b68ee',
|
|
mediumspringgreen: '#00fa9a',
|
|
mediumturquoise: '#48d1cc',
|
|
mediumvioletred: '#c71585',
|
|
midnightblue: '#191970',
|
|
mintcream: '#f5fffa',
|
|
mistyrose: '#ffe4e1',
|
|
moccasin: '#ffe4b5',
|
|
navajowhite: '#ffdead',
|
|
navy: '#000080',
|
|
oldlace: '#fdf5e6',
|
|
olive: '#808000',
|
|
olivedrab: '#6b8e23',
|
|
orange: '#ffa500',
|
|
orangered: '#ff4500',
|
|
orchid: '#da70d6',
|
|
palegoldenrod: '#eee8aa',
|
|
palegreen: '#98fb98',
|
|
paleturquoise: '#afeeee',
|
|
palevioletred: '#d87093',
|
|
papayawhip: '#ffefd5',
|
|
peachpuff: '#ffdab9',
|
|
peru: '#cd853f',
|
|
pink: '#ffc0cb',
|
|
plum: '#dda0dd',
|
|
powderblue: '#b0e0e6',
|
|
purple: '#800080',
|
|
red: '#ff0000',
|
|
rosybrown: '#bc8f8f',
|
|
royalblue: '#4169e1',
|
|
saddlebrown: '#8b4513',
|
|
salmon: '#fa8072',
|
|
sandybrown: '#f4a460',
|
|
seagreen: '#2e8b57',
|
|
seashell: '#fff5ee',
|
|
sienna: '#a0522d',
|
|
silver: '#c0c0c0',
|
|
skyblue: '#87ceeb',
|
|
slateblue: '#6a5acd',
|
|
slategray: '#708090',
|
|
snow: '#fffafa',
|
|
springgreen: '#00ff7f',
|
|
steelblue: '#4682b4',
|
|
tan: '#d2b48c',
|
|
teal: '#008080',
|
|
thistle: '#d8bfd8',
|
|
tomato: '#ff6347',
|
|
turquoise: '#40e0d0',
|
|
violet: '#ee82ee',
|
|
violetred: '#d02090',
|
|
wheat: '#f5deb3',
|
|
white: '#ffffff',
|
|
whitesmoke: '#f5f5f5',
|
|
yellow: '#ffff00',
|
|
yellowgreen: '#9acd32'
|
|
};
|
|
|
|
/**
|
|
* Tolerant max() funciton
|
|
* @return {number} max value
|
|
*/
|
|
function patientMax() {
|
|
var args = Array.prototype.slice.call(arguments),
|
|
r = -Number.MAX_VALUE;
|
|
|
|
each(args, function(t) {
|
|
if (
|
|
typeof t !== 'undefined' &&
|
|
t !== null &&
|
|
typeof t.length !== 'undefined'
|
|
) {
|
|
// r = r < t.length ? t.length : r;
|
|
if (t.length > 0) {
|
|
r = t.length;
|
|
return true;
|
|
}
|
|
}
|
|
});
|
|
|
|
return r;
|
|
}
|
|
|
|
/*
|
|
* Returns true if we should force chart series boosting
|
|
* The result of this is cached in chart.boostForceChartBoost.
|
|
* It's re-fetched on redraw.
|
|
*
|
|
* We do this because there's a lot of overhead involved when dealing
|
|
* with a lot of series.
|
|
*
|
|
*/
|
|
function shouldForceChartSeriesBoosting(chart) {
|
|
// If there are more than five series currently boosting,
|
|
// we should boost the whole chart to avoid running out of webgl contexts.
|
|
var sboostCount = 0,
|
|
canBoostCount = 0,
|
|
allowBoostForce = pick(
|
|
chart.options.boost && chart.options.boost.allowForce,
|
|
true
|
|
),
|
|
series;
|
|
|
|
if (typeof chart.boostForceChartBoost !== 'undefined') {
|
|
return chart.boostForceChartBoost;
|
|
}
|
|
|
|
if (chart.series.length > 1) {
|
|
for (var i = 0; i < chart.series.length; i++) {
|
|
|
|
series = chart.series[i];
|
|
|
|
if (boostableMap[series.type]) {
|
|
++canBoostCount;
|
|
}
|
|
|
|
if (patientMax(
|
|
series.processedXData,
|
|
series.options.data,
|
|
// series.xData,
|
|
series.points
|
|
) >= (series.options.boostThreshold || Number.MAX_VALUE)) {
|
|
++sboostCount;
|
|
}
|
|
}
|
|
}
|
|
|
|
chart.boostForceChartBoost =
|
|
(
|
|
allowBoostForce &&
|
|
canBoostCount === chart.series.length &&
|
|
sboostCount > 0
|
|
) ||
|
|
sboostCount > 5;
|
|
|
|
return chart.boostForceChartBoost;
|
|
}
|
|
|
|
/*
|
|
* Returns true if the chart is in series boost mode
|
|
* @param chart {Highchart.Chart} - the chart to check
|
|
* @returns {Boolean} - true if the chart is in series boost mode
|
|
*/
|
|
Chart.prototype.isChartSeriesBoosting = function() {
|
|
var isSeriesBoosting,
|
|
threshold = pick(
|
|
this.options.boost && this.options.boost.seriesThreshold,
|
|
50
|
|
);
|
|
|
|
isSeriesBoosting = threshold <= this.series.length ||
|
|
shouldForceChartSeriesBoosting(this);
|
|
|
|
return isSeriesBoosting;
|
|
};
|
|
|
|
/*
|
|
* Get the clip rectangle for a target, either a series or the chart. For the
|
|
* chart, we need to consider the maximum extent of its Y axes, in case of
|
|
* Highstock panes and navigator.
|
|
*/
|
|
Chart.prototype.getBoostClipRect = function(target) {
|
|
var clipBox = {
|
|
x: this.plotLeft,
|
|
y: this.plotTop,
|
|
width: this.plotWidth,
|
|
height: this.plotHeight
|
|
};
|
|
|
|
if (target === this) {
|
|
each(this.yAxis, function(yAxis) {
|
|
clipBox.y = Math.min(yAxis.pos, clipBox.y);
|
|
clipBox.height = Math.max(
|
|
yAxis.pos - this.plotTop + yAxis.len,
|
|
clipBox.height
|
|
);
|
|
}, this);
|
|
}
|
|
|
|
return clipBox;
|
|
};
|
|
|
|
/*
|
|
* Returns true if the series is in boost mode
|
|
* @param series {Highchart.Series} - the series to check
|
|
* @returns {boolean} - true if the series is in boost mode
|
|
*/
|
|
/*
|
|
function isSeriesBoosting(series, overrideThreshold) {
|
|
return isChartSeriesBoosting(series.chart) ||
|
|
patientMax(
|
|
series.processedXData,
|
|
series.options.data,
|
|
series.points
|
|
) >= (overrideThreshold || series.options.boostThreshold || Number.MAX_VALUE);
|
|
}
|
|
*/
|
|
|
|
// START OF WEBGL ABSTRACTIONS
|
|
|
|
/*
|
|
* A static shader mimicing axis translation functions found in parts/Axis
|
|
* @param gl {WebGLContext} - the context in which the shader is active
|
|
*/
|
|
function GLShader(gl) {
|
|
var vertShade = [
|
|
/* eslint-disable */
|
|
'#version 100',
|
|
'precision highp float;',
|
|
|
|
'attribute vec4 aVertexPosition;',
|
|
'attribute vec4 aColor;',
|
|
|
|
'varying highp vec2 position;',
|
|
'varying highp vec4 vColor;',
|
|
|
|
'uniform mat4 uPMatrix;',
|
|
'uniform float pSize;',
|
|
|
|
'uniform float translatedThreshold;',
|
|
'uniform bool hasThreshold;',
|
|
|
|
'uniform bool skipTranslation;',
|
|
|
|
'uniform float plotHeight;',
|
|
|
|
'uniform float xAxisTrans;',
|
|
'uniform float xAxisMin;',
|
|
'uniform float xAxisMinPad;',
|
|
'uniform float xAxisPointRange;',
|
|
'uniform float xAxisLen;',
|
|
'uniform bool xAxisPostTranslate;',
|
|
'uniform float xAxisOrdinalSlope;',
|
|
'uniform float xAxisOrdinalOffset;',
|
|
'uniform float xAxisPos;',
|
|
'uniform bool xAxisCVSCoord;',
|
|
|
|
'uniform float yAxisTrans;',
|
|
'uniform float yAxisMin;',
|
|
'uniform float yAxisMinPad;',
|
|
'uniform float yAxisPointRange;',
|
|
'uniform float yAxisLen;',
|
|
'uniform bool yAxisPostTranslate;',
|
|
'uniform float yAxisOrdinalSlope;',
|
|
'uniform float yAxisOrdinalOffset;',
|
|
'uniform float yAxisPos;',
|
|
'uniform bool yAxisCVSCoord;',
|
|
|
|
'uniform bool isBubble;',
|
|
'uniform bool bubbleSizeByArea;',
|
|
'uniform float bubbleZMin;',
|
|
'uniform float bubbleZMax;',
|
|
'uniform float bubbleZThreshold;',
|
|
'uniform float bubbleMinSize;',
|
|
'uniform float bubbleMaxSize;',
|
|
'uniform bool bubbleSizeAbs;',
|
|
'uniform bool isInverted;',
|
|
|
|
'float bubbleRadius(){',
|
|
'float value = aVertexPosition.w;',
|
|
'float zMax = bubbleZMax;',
|
|
'float zMin = bubbleZMin;',
|
|
'float radius = 0.0;',
|
|
'float pos = 0.0;',
|
|
'float zRange = zMax - zMin;',
|
|
|
|
'if (bubbleSizeAbs){',
|
|
'value = value - bubbleZThreshold;',
|
|
'zMax = max(zMax - bubbleZThreshold, zMin - bubbleZThreshold);',
|
|
'zMin = 0.0;',
|
|
'}',
|
|
|
|
'if (value < zMin){',
|
|
'radius = bubbleZMin / 2.0 - 1.0;',
|
|
'} else {',
|
|
'pos = zRange > 0.0 ? (value - zMin) / zRange : 0.5;',
|
|
'if (bubbleSizeByArea && pos > 0.0){',
|
|
'pos = sqrt(pos);',
|
|
'}',
|
|
'radius = ceil(bubbleMinSize + pos * (bubbleMaxSize - bubbleMinSize)) / 2.0;',
|
|
'}',
|
|
|
|
'return radius * 2.0;',
|
|
'}',
|
|
|
|
'float translate(float val,',
|
|
'float pointPlacement,',
|
|
'float localA,',
|
|
'float localMin,',
|
|
'float minPixelPadding,',
|
|
'float pointRange,',
|
|
'float len,',
|
|
'bool cvsCoord',
|
|
'){',
|
|
|
|
'float sign = 1.0;',
|
|
'float cvsOffset = 0.0;',
|
|
|
|
'if (cvsCoord) {',
|
|
'sign *= -1.0;',
|
|
'cvsOffset = len;',
|
|
'}',
|
|
|
|
'return sign * (val - localMin) * localA + cvsOffset + ',
|
|
'(sign * minPixelPadding);', //' + localA * pointPlacement * pointRange;',
|
|
'}',
|
|
|
|
'float xToPixels(float value){',
|
|
'if (skipTranslation){',
|
|
'return value;// + xAxisPos;',
|
|
'}',
|
|
|
|
'return translate(value, 0.0, xAxisTrans, xAxisMin, xAxisMinPad, xAxisPointRange, xAxisLen, xAxisCVSCoord);// + xAxisPos;',
|
|
'}',
|
|
|
|
'float yToPixels(float value, float checkTreshold){',
|
|
'float v;',
|
|
'if (skipTranslation){',
|
|
'v = value;// + yAxisPos;',
|
|
'} else {',
|
|
'v = translate(value, 0.0, yAxisTrans, yAxisMin, yAxisMinPad, yAxisPointRange, yAxisLen, yAxisCVSCoord);// + yAxisPos;',
|
|
'if (v > plotHeight) {',
|
|
'v = plotHeight;',
|
|
'}',
|
|
'}',
|
|
'if (checkTreshold > 0.0 && hasThreshold) {',
|
|
'v = min(v, translatedThreshold);',
|
|
'}',
|
|
'return v;',
|
|
'}',
|
|
|
|
'void main(void) {',
|
|
'if (isBubble){',
|
|
'gl_PointSize = bubbleRadius();',
|
|
'} else {',
|
|
'gl_PointSize = pSize;',
|
|
'}',
|
|
//'gl_PointSize = 10.0;',
|
|
'vColor = aColor;',
|
|
|
|
'if (isInverted) {',
|
|
'gl_Position = uPMatrix * vec4(xToPixels(aVertexPosition.y) + yAxisPos, yToPixels(aVertexPosition.x, aVertexPosition.z) + xAxisPos, 0.0, 1.0);',
|
|
'} else {',
|
|
'gl_Position = uPMatrix * vec4(xToPixels(aVertexPosition.x) + xAxisPos, yToPixels(aVertexPosition.y, aVertexPosition.z) + yAxisPos, 0.0, 1.0);',
|
|
'}',
|
|
//'gl_Position = uPMatrix * vec4(aVertexPosition.x, aVertexPosition.y, 0.0, 1.0);',
|
|
'}'
|
|
/* eslint-enable */
|
|
].join('\n'),
|
|
// Fragment shader source
|
|
fragShade = [
|
|
/* eslint-disable */
|
|
'precision highp float;',
|
|
'uniform vec4 fillColor;',
|
|
'varying highp vec2 position;',
|
|
'varying highp vec4 vColor;',
|
|
'uniform sampler2D uSampler;',
|
|
'uniform bool isCircle;',
|
|
'uniform bool hasColor;',
|
|
|
|
// 'vec4 toColor(float value, vec2 point) {',
|
|
// 'return vec4(0.0, 0.0, 0.0, 0.0);',
|
|
// '}',
|
|
|
|
'void main(void) {',
|
|
'vec4 col = fillColor;',
|
|
'vec4 tcol;',
|
|
|
|
'if (hasColor) {',
|
|
'col = vColor;',
|
|
'}',
|
|
|
|
'if (isCircle) {',
|
|
'tcol = texture2D(uSampler, gl_PointCoord.st);',
|
|
'col *= tcol;',
|
|
'if (tcol.r < 0.0) {',
|
|
'discard;',
|
|
'} else {',
|
|
'gl_FragColor = col;',
|
|
'}',
|
|
'} else {',
|
|
'gl_FragColor = col;',
|
|
'}',
|
|
'}'
|
|
/* eslint-enable */
|
|
].join('\n'),
|
|
uLocations = {},
|
|
// The shader program
|
|
shaderProgram,
|
|
// Uniform handle to the perspective matrix
|
|
pUniform,
|
|
// Uniform for point size
|
|
psUniform,
|
|
// Uniform for fill color
|
|
fillColorUniform,
|
|
// Uniform for isBubble
|
|
isBubbleUniform,
|
|
// Uniform for bubble abs sizing
|
|
bubbleSizeAbsUniform,
|
|
bubbleSizeAreaUniform,
|
|
// Skip translation uniform
|
|
skipTranslationUniform,
|
|
// Set to 1 if circle
|
|
isCircleUniform,
|
|
// Uniform for invertion
|
|
isInverted,
|
|
plotHeightUniform,
|
|
// Texture uniform
|
|
uSamplerUniform;
|
|
|
|
/* String to shader program
|
|
* @param {string} str - the program source
|
|
* @param {string} type - the program type: either `vertex` or `fragment`
|
|
* @returns {bool|shader}
|
|
*/
|
|
function stringToProgram(str, type) {
|
|
var t = type === 'vertex' ? gl.VERTEX_SHADER : gl.FRAGMENT_SHADER,
|
|
shader = gl.createShader(t);
|
|
|
|
gl.shaderSource(shader, str);
|
|
gl.compileShader(shader);
|
|
|
|
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
|
|
// console.error('shader error:', gl.getShaderInfoLog(shader));
|
|
return false;
|
|
}
|
|
return shader;
|
|
}
|
|
|
|
/*
|
|
* Create the shader.
|
|
* Loads the shader program statically defined above
|
|
*/
|
|
function createShader() {
|
|
var v = stringToProgram(vertShade, 'vertex'),
|
|
f = stringToProgram(fragShade, 'fragment');
|
|
|
|
if (!v || !f) {
|
|
shaderProgram = false;
|
|
// console.error('error creating shader program');
|
|
return false;
|
|
}
|
|
|
|
function uloc(n) {
|
|
return gl.getUniformLocation(shaderProgram, n);
|
|
}
|
|
|
|
shaderProgram = gl.createProgram();
|
|
|
|
gl.attachShader(shaderProgram, v);
|
|
gl.attachShader(shaderProgram, f);
|
|
gl.linkProgram(shaderProgram);
|
|
|
|
gl.useProgram(shaderProgram);
|
|
|
|
gl.bindAttribLocation(shaderProgram, 0, 'aVertexPosition');
|
|
|
|
pUniform = uloc('uPMatrix');
|
|
psUniform = uloc('pSize');
|
|
fillColorUniform = uloc('fillColor');
|
|
isBubbleUniform = uloc('isBubble');
|
|
bubbleSizeAbsUniform = uloc('bubbleSizeAbs');
|
|
bubbleSizeAreaUniform = uloc('bubbleSizeByArea');
|
|
uSamplerUniform = uloc('uSampler');
|
|
skipTranslationUniform = uloc('skipTranslation');
|
|
isCircleUniform = uloc('isCircle');
|
|
isInverted = uloc('isInverted');
|
|
plotHeightUniform = uloc('plotHeight');
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Destroy the shader
|
|
*/
|
|
function destroy() {
|
|
if (gl) {
|
|
if (shaderProgram) {
|
|
gl.deleteProgram(shaderProgram);
|
|
shaderProgram = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Bind the shader.
|
|
* This makes the shader the active one until another one is bound,
|
|
* or until 0 is bound.
|
|
*/
|
|
function bind() {
|
|
gl.useProgram(shaderProgram);
|
|
}
|
|
|
|
/*
|
|
* Set a uniform value.
|
|
* This uses a hash map to cache uniform locations.
|
|
* @param name {string} - the name of the uniform to set
|
|
* @param val {float} - the value to set
|
|
*/
|
|
function setUniform(name, val) {
|
|
var u = uLocations[name] = uLocations[name] ||
|
|
gl.getUniformLocation(shaderProgram, name);
|
|
gl.uniform1f(u, val);
|
|
}
|
|
|
|
/*
|
|
* Set the active texture
|
|
* @param texture - the texture
|
|
*/
|
|
function setTexture() {
|
|
gl.uniform1i(uSamplerUniform, 0);
|
|
}
|
|
|
|
/*
|
|
* Set if inversion state
|
|
* @flag is the state
|
|
*/
|
|
function setInverted(flag) {
|
|
gl.uniform1i(isInverted, flag);
|
|
}
|
|
|
|
/*
|
|
* Enable/disable circle drawing
|
|
*/
|
|
function setDrawAsCircle(flag) {
|
|
gl.uniform1i(isCircleUniform, flag ? 1 : 0);
|
|
}
|
|
|
|
function setPlotHeight(n) {
|
|
gl.uniform1f(plotHeightUniform, n);
|
|
}
|
|
|
|
/*
|
|
* Flush
|
|
*/
|
|
function reset() {
|
|
gl.uniform1i(isBubbleUniform, 0);
|
|
gl.uniform1i(isCircleUniform, 0);
|
|
}
|
|
|
|
/*
|
|
* Set bubble uniforms
|
|
* @param series {Highcharts.Series} - the series to use
|
|
*/
|
|
function setBubbleUniforms(series, zCalcMin, zCalcMax) {
|
|
var seriesOptions = series.options,
|
|
zMin = Number.MAX_VALUE,
|
|
zMax = -Number.MAX_VALUE;
|
|
|
|
if (series.type === 'bubble') {
|
|
zMin = pick(seriesOptions.zMin, Math.min(
|
|
zMin,
|
|
Math.max(
|
|
zCalcMin,
|
|
seriesOptions.displayNegative === false ?
|
|
seriesOptions.zThreshold : -Number.MAX_VALUE
|
|
)
|
|
));
|
|
|
|
zMax = pick(seriesOptions.zMax, Math.max(zMax, zCalcMax));
|
|
|
|
gl.uniform1i(isBubbleUniform, 1);
|
|
gl.uniform1i(isCircleUniform, 1);
|
|
gl.uniform1i(bubbleSizeAreaUniform, series.options.sizeBy !== 'width');
|
|
gl.uniform1i(bubbleSizeAbsUniform, series.options.sizeByAbsoluteValue);
|
|
|
|
setUniform('bubbleZMin', zMin);
|
|
setUniform('bubbleZMax', zMax);
|
|
setUniform('bubbleZThreshold', series.options.zThreshold);
|
|
setUniform('bubbleMinSize', series.minPxSize);
|
|
setUniform('bubbleMaxSize', series.maxPxSize);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set the Color uniform.
|
|
* @param color {Array<float>} - an array with RGBA values
|
|
*/
|
|
function setColor(color) {
|
|
gl.uniform4f(
|
|
fillColorUniform,
|
|
color[0] / 255.0,
|
|
color[1] / 255.0,
|
|
color[2] / 255.0,
|
|
color[3]
|
|
);
|
|
}
|
|
|
|
/*
|
|
* Set skip translation
|
|
*/
|
|
function setSkipTranslation(flag) {
|
|
gl.uniform1i(skipTranslationUniform, flag === true ? 1 : 0);
|
|
}
|
|
|
|
/*
|
|
* Set the perspective matrix
|
|
* @param m {Matrix4x4} - the matrix
|
|
*/
|
|
function setPMatrix(m) {
|
|
gl.uniformMatrix4fv(pUniform, false, m);
|
|
}
|
|
|
|
/*
|
|
* Set the point size.
|
|
* @param p {float} - point size
|
|
*/
|
|
function setPointSize(p) {
|
|
gl.uniform1f(psUniform, p);
|
|
}
|
|
|
|
/*
|
|
* Get the shader program handle
|
|
* @returns {GLInt} - the handle for the program
|
|
*/
|
|
function getProgram() {
|
|
return shaderProgram;
|
|
}
|
|
|
|
if (gl) {
|
|
createShader();
|
|
}
|
|
|
|
return {
|
|
psUniform: function() {
|
|
return psUniform;
|
|
},
|
|
pUniform: function() {
|
|
return pUniform;
|
|
},
|
|
fillColorUniform: function() {
|
|
return fillColorUniform;
|
|
},
|
|
setPlotHeight: setPlotHeight,
|
|
setBubbleUniforms: setBubbleUniforms,
|
|
bind: bind,
|
|
program: getProgram,
|
|
create: createShader,
|
|
setUniform: setUniform,
|
|
setPMatrix: setPMatrix,
|
|
setColor: setColor,
|
|
setPointSize: setPointSize,
|
|
setSkipTranslation: setSkipTranslation,
|
|
setTexture: setTexture,
|
|
setDrawAsCircle: setDrawAsCircle,
|
|
reset: reset,
|
|
setInverted: setInverted,
|
|
destroy: destroy
|
|
};
|
|
}
|
|
|
|
/*
|
|
* Vertex Buffer abstraction
|
|
* A vertex buffer is a set of vertices which are passed to the GPU
|
|
* in a single call.
|
|
* @param gl {WebGLContext} - the context in which to create the buffer
|
|
* @param shader {GLShader} - the shader to use
|
|
*/
|
|
function GLVertexBuffer(gl, shader, dataComponents /* , type */ ) {
|
|
var buffer = false,
|
|
vertAttribute = false,
|
|
components = dataComponents || 2,
|
|
preAllocated = false,
|
|
iterator = 0,
|
|
// farray = false,
|
|
data;
|
|
|
|
// type = type || 'float';
|
|
|
|
function destroy() {
|
|
if (buffer) {
|
|
gl.deleteBuffer(buffer);
|
|
buffer = false;
|
|
vertAttribute = false;
|
|
}
|
|
|
|
iterator = 0;
|
|
components = dataComponents || 2;
|
|
data = [];
|
|
}
|
|
|
|
/*
|
|
* Build the buffer
|
|
* @param dataIn {Array<float>} - a 0 padded array of indices
|
|
* @param attrib {String} - the name of the Attribute to bind the buffer to
|
|
* @param dataComponents {Integer} - the number of components per. indice
|
|
*/
|
|
function build(dataIn, attrib, dataComponents) {
|
|
var farray;
|
|
|
|
data = dataIn || [];
|
|
|
|
if ((!data || data.length === 0) && !preAllocated) {
|
|
// console.error('trying to render empty vbuffer');
|
|
destroy();
|
|
return false;
|
|
}
|
|
|
|
components = dataComponents || components;
|
|
|
|
if (buffer) {
|
|
gl.deleteBuffer(buffer);
|
|
}
|
|
|
|
if (!preAllocated) {
|
|
farray = new Float32Array(data);
|
|
}
|
|
|
|
buffer = gl.createBuffer();
|
|
gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
|
|
gl.bufferData(
|
|
gl.ARRAY_BUFFER,
|
|
preAllocated || farray,
|
|
gl.STATIC_DRAW
|
|
);
|
|
|
|
// gl.bindAttribLocation(shader.program(), 0, 'aVertexPosition');
|
|
vertAttribute = gl.getAttribLocation(shader.program(), attrib);
|
|
gl.enableVertexAttribArray(vertAttribute);
|
|
|
|
// Trigger cleanup
|
|
farray = false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Bind the buffer
|
|
*/
|
|
function bind() {
|
|
if (!buffer) {
|
|
return false;
|
|
}
|
|
|
|
// gl.bindAttribLocation(shader.program(), 0, 'aVertexPosition');
|
|
// gl.enableVertexAttribArray(vertAttribute);
|
|
// gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
|
|
gl.vertexAttribPointer(vertAttribute, components, gl.FLOAT, false, 0, 0);
|
|
// gl.enableVertexAttribArray(vertAttribute);
|
|
}
|
|
|
|
/*
|
|
* Render the buffer
|
|
* @param from {Integer} - the start indice
|
|
* @param to {Integer} - the end indice
|
|
* @param drawMode {String} - the draw mode
|
|
*/
|
|
function render(from, to, drawMode) {
|
|
var length = preAllocated ? preAllocated.length : data.length;
|
|
|
|
if (!buffer) {
|
|
return false;
|
|
}
|
|
|
|
if (!length) {
|
|
return false;
|
|
}
|
|
|
|
if (!from || from > length || from < 0) {
|
|
from = 0;
|
|
}
|
|
|
|
if (!to || to > length) {
|
|
to = length;
|
|
}
|
|
|
|
drawMode = drawMode || 'points';
|
|
|
|
gl.drawArrays(
|
|
gl[drawMode.toUpperCase()],
|
|
from / components,
|
|
(to - from) / components
|
|
);
|
|
|
|
return true;
|
|
}
|
|
|
|
function push(x, y, a, b) {
|
|
if (preAllocated) { // && iterator <= preAllocated.length - 4) {
|
|
preAllocated[++iterator] = x;
|
|
preAllocated[++iterator] = y;
|
|
preAllocated[++iterator] = a;
|
|
preAllocated[++iterator] = b;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Note about pre-allocated buffers:
|
|
* - This is slower for charts with many series
|
|
*/
|
|
function allocate(size) {
|
|
size *= 4;
|
|
iterator = -1;
|
|
|
|
// if (!preAllocated || (preAllocated && preAllocated.length !== size)) {
|
|
preAllocated = new Float32Array(size);
|
|
// }
|
|
}
|
|
|
|
// /////////////////////////////////////////////////////////////////////////
|
|
return {
|
|
destroy: destroy,
|
|
bind: bind,
|
|
data: data,
|
|
build: build,
|
|
render: render,
|
|
allocate: allocate,
|
|
push: push
|
|
};
|
|
}
|
|
|
|
/* Main renderer. Used to render series.
|
|
* Notes to self:
|
|
* - May be able to build a point map by rendering to a separate canvas
|
|
* and encoding values in the color data.
|
|
* - Need to figure out a way to transform the data quicker
|
|
*/
|
|
function GLRenderer(postRenderCallback) {
|
|
var // Shader
|
|
shader = false,
|
|
// Vertex buffers - keyed on shader attribute name
|
|
vbuffer = false,
|
|
// Opengl context
|
|
gl = false,
|
|
// Width of our viewport in pixels
|
|
width = 0,
|
|
// Height of our viewport in pixels
|
|
height = 0,
|
|
// The data to render - array of coordinates
|
|
data = false,
|
|
// The marker data
|
|
markerData = false,
|
|
// Is the texture ready?
|
|
textureIsReady = false,
|
|
// Exports
|
|
exports = {},
|
|
// Is it inited?
|
|
isInited = false,
|
|
// The series stack
|
|
series = [],
|
|
// Texture for circles
|
|
circleTexture = doc.createElement('canvas'),
|
|
// Context for circle texture
|
|
circleCtx = circleTexture.getContext('2d'),
|
|
// Handle for the circle texture
|
|
circleTextureHandle,
|
|
// Things to draw as "rectangles" (i.e lines)
|
|
asBar = {
|
|
'column': true,
|
|
'bar': true,
|
|
'area': true
|
|
},
|
|
asCircle = {
|
|
'scatter': true,
|
|
'bubble': true
|
|
},
|
|
// Render settings
|
|
settings = {
|
|
pointSize: 1,
|
|
lineWidth: 1,
|
|
fillColor: '#AA00AA',
|
|
useAlpha: true,
|
|
usePreallocated: false,
|
|
useGPUTranslations: false,
|
|
debug: {
|
|
timeRendering: false,
|
|
timeSeriesProcessing: false,
|
|
timeSetup: false,
|
|
timeBufferCopy: false,
|
|
timeKDTree: false,
|
|
showSkipSummary: false
|
|
}
|
|
};
|
|
|
|
// /////////////////////////////////////////////////////////////////////////
|
|
|
|
function setOptions(options) {
|
|
merge(true, settings, options);
|
|
}
|
|
|
|
function seriesPointCount(series) {
|
|
var isStacked,
|
|
xData,
|
|
s;
|
|
|
|
if (series.isSeriesBoosting) {
|
|
isStacked = !!series.options.stacking;
|
|
xData = series.xData || series.options.xData || series.processedXData;
|
|
s = (isStacked ? series.data : (xData || series.options.data)).length;
|
|
|
|
if (series.type === 'treemap') {
|
|
s *= 12;
|
|
} else if (series.type === 'heatmap') {
|
|
s *= 6;
|
|
} else if (asBar[series.type]) {
|
|
s *= 2;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Allocate a float buffer to fit all series */
|
|
function allocateBuffer(chart) {
|
|
var s = 0;
|
|
|
|
if (!settings.usePreallocated) {
|
|
return;
|
|
}
|
|
|
|
each(chart.series, function(series) {
|
|
if (series.isSeriesBoosting) {
|
|
s += seriesPointCount(series);
|
|
}
|
|
});
|
|
|
|
vbuffer.allocate(s);
|
|
}
|
|
|
|
function allocateBufferForSingleSeries(series) {
|
|
var s = 0;
|
|
|
|
if (!settings.usePreallocated) {
|
|
return;
|
|
}
|
|
|
|
if (series.isSeriesBoosting) {
|
|
s = seriesPointCount(series);
|
|
}
|
|
|
|
vbuffer.allocate(s);
|
|
}
|
|
|
|
/*
|
|
* Returns an orthographic perspective matrix
|
|
* @param {number} width - the width of the viewport in pixels
|
|
* @param {number} height - the height of the viewport in pixels
|
|
*/
|
|
function orthoMatrix(width, height) {
|
|
var near = 0,
|
|
far = 1;
|
|
|
|
return [
|
|
2 / width, 0, 0, 0,
|
|
0, -(2 / height), 0, 0,
|
|
0, 0, -2 / (far - near), 0, -1, 1, -(far + near) / (far - near), 1
|
|
];
|
|
}
|
|
|
|
/*
|
|
* Clear the depth and color buffer
|
|
*/
|
|
function clear() {
|
|
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
|
|
}
|
|
|
|
/*
|
|
* Get the WebGL context
|
|
* @returns {WebGLContext} - the context
|
|
*/
|
|
function getGL() {
|
|
return gl;
|
|
}
|
|
|
|
/*
|
|
* Push data for a single series
|
|
* This calculates additional vertices and transforms the data to be
|
|
* aligned correctly in memory
|
|
*/
|
|
function pushSeriesData(series, inst) {
|
|
var isRange = series.pointArrayMap &&
|
|
series.pointArrayMap.join(',') === 'low,high',
|
|
chart = series.chart,
|
|
options = series.options,
|
|
isStacked = !!options.stacking,
|
|
rawData = options.data,
|
|
xExtremes = series.xAxis.getExtremes(),
|
|
xMin = xExtremes.min,
|
|
xMax = xExtremes.max,
|
|
yExtremes = series.yAxis.getExtremes(),
|
|
yMin = yExtremes.min,
|
|
yMax = yExtremes.max,
|
|
xData = series.xData || options.xData || series.processedXData,
|
|
yData = series.yData || options.yData || series.processedYData,
|
|
zData = series.zData || options.zData || series.processedZData,
|
|
yAxis = series.yAxis,
|
|
xAxis = series.xAxis,
|
|
plotHeight = series.chart.plotHeight,
|
|
useRaw = !xData || xData.length === 0,
|
|
// threshold = options.threshold,
|
|
// yBottom = chart.yAxis[0].getThreshold(threshold),
|
|
// hasThreshold = isNumber(threshold),
|
|
// colorByPoint = series.options.colorByPoint,
|
|
// This is required for color by point, so make sure this is
|
|
// uncommented if enabling that
|
|
// colorIndex = 0,
|
|
// Required for color axis support
|
|
// caxis,
|
|
// connectNulls = options.connectNulls,
|
|
// For some reason eslint doesn't pick up that this is actually used
|
|
maxVal, // eslint-disable-line no-unused-vars
|
|
points = series.points || false,
|
|
lastX = false,
|
|
lastY = false,
|
|
minVal,
|
|
color,
|
|
scolor,
|
|
sdata = isStacked ? series.data : (xData || rawData),
|
|
closestLeft = {
|
|
x: Number.MIN_VALUE,
|
|
y: 0
|
|
},
|
|
closestRight = {
|
|
x: Number.MIN_VALUE,
|
|
y: 0
|
|
},
|
|
|
|
skipped = 0,
|
|
|
|
cullXThreshold = 1,
|
|
cullYThreshold = 1,
|
|
|
|
// The following are used in the builder while loop
|
|
x,
|
|
y,
|
|
d,
|
|
z,
|
|
i = -1,
|
|
px = false,
|
|
nx = false,
|
|
// This is in fact used.
|
|
low, // eslint-disable-line no-unused-vars
|
|
chartDestroyed = typeof chart.index === 'undefined',
|
|
nextInside = false,
|
|
prevInside = false,
|
|
pcolor = false,
|
|
drawAsBar = asBar[series.type],
|
|
isXInside = false,
|
|
isYInside = true;
|
|
|
|
if (options.boostData && options.boostData.length > 0) {
|
|
return;
|
|
}
|
|
|
|
series.closestPointRangePx = Number.MAX_VALUE;
|
|
|
|
// Push color to color buffer - need to do this per. vertex
|
|
function pushColor(color) {
|
|
if (color) {
|
|
inst.colorData.push(color[0]);
|
|
inst.colorData.push(color[1]);
|
|
inst.colorData.push(color[2]);
|
|
inst.colorData.push(color[3]);
|
|
}
|
|
}
|
|
|
|
// Push a vertice to the data buffer
|
|
function vertice(x, y, checkTreshold, pointSize, color) {
|
|
pushColor(color);
|
|
if (settings.usePreallocated) {
|
|
vbuffer.push(x, y, checkTreshold ? 1 : 0, pointSize || 1);
|
|
} else {
|
|
data.push(x);
|
|
data.push(y);
|
|
data.push(checkTreshold ? 1 : 0);
|
|
data.push(pointSize || 1);
|
|
}
|
|
}
|
|
|
|
// Push a rectangle to the data buffer
|
|
function pushRect(x, y, w, h, color) {
|
|
pushColor(color);
|
|
vertice(x + w, y);
|
|
pushColor(color);
|
|
vertice(x, y);
|
|
pushColor(color);
|
|
vertice(x, y + h);
|
|
|
|
pushColor(color);
|
|
vertice(x, y + h);
|
|
pushColor(color);
|
|
vertice(x + w, y + h);
|
|
pushColor(color);
|
|
vertice(x + w, y);
|
|
}
|
|
|
|
// Special case for point shapes
|
|
if (points && points.length > 0) {
|
|
|
|
// If we're doing points, we assume that the points are already
|
|
// translated, so we skip the shader translation.
|
|
inst.skipTranslation = true;
|
|
// Force triangle draw mode
|
|
inst.drawMode = 'triangles';
|
|
|
|
// We don't have a z component in the shader, so we need to sort.
|
|
if (points[0].node && points[0].node.levelDynamic) {
|
|
points.sort(function(a, b) {
|
|
if (a.node) {
|
|
if (a.node.levelDynamic > b.node.levelDynamic) {
|
|
return 1;
|
|
} else if (a.node.levelDynamic < b.node.levelDynamic) {
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
});
|
|
}
|
|
|
|
each(points, function(point) {
|
|
var plotY = point.plotY,
|
|
shapeArgs,
|
|
swidth,
|
|
pointAttr;
|
|
|
|
if (typeof plotY !== 'undefined' && !isNaN(plotY) && point.y !== null) {
|
|
shapeArgs = point.shapeArgs;
|
|
|
|
|
|
pointAttr = point.series.pointAttribs(point);
|
|
|
|
swidth = pointAttr['stroke-width'] || 0;
|
|
|
|
// Handle point colors
|
|
color = H.color(pointAttr.fill).rgba;
|
|
color[0] /= 255.0;
|
|
color[1] /= 255.0;
|
|
color[2] /= 255.0;
|
|
|
|
// So there are two ways of doing this. Either we can
|
|
// create a rectangle of two triangles, or we can do a
|
|
// point and use point size. Latter is faster, but
|
|
// only supports squares. So we're doing triangles.
|
|
// We could also use one color per. vertice to get
|
|
// better color interpolation.
|
|
|
|
// If there's stroking, we do an additional rect
|
|
// if (pointAttr.stroke !== 'none' && swidth && swidth > 0) {
|
|
if (series.type === 'treemap') {
|
|
swidth = swidth || 1;
|
|
scolor = H.color(pointAttr.stroke).rgba;
|
|
|
|
scolor[0] /= 255.0;
|
|
scolor[1] /= 255.0;
|
|
scolor[2] /= 255.0;
|
|
|
|
pushRect(
|
|
shapeArgs.x,
|
|
shapeArgs.y,
|
|
shapeArgs.width,
|
|
shapeArgs.height,
|
|
scolor
|
|
);
|
|
|
|
swidth /= 2;
|
|
}
|
|
// } else {
|
|
// swidth = 0;
|
|
// }
|
|
|
|
// Fixes issues with inverted heatmaps (see #6981)
|
|
// The root cause is that the coordinate system is flipped.
|
|
// In other words, instead of [0,0] being top-left, it's bottom-right.
|
|
// This causes a vertical and horizontal flip in the resulting image,
|
|
// making it rotated 180 degrees.
|
|
if (series.type === 'heatmap' && chart.inverted) {
|
|
shapeArgs.x = xAxis.len - shapeArgs.x;
|
|
shapeArgs.y = yAxis.len - shapeArgs.y;
|
|
shapeArgs.width = -shapeArgs.width;
|
|
shapeArgs.height = -shapeArgs.height;
|
|
}
|
|
|
|
pushRect(
|
|
shapeArgs.x + swidth,
|
|
shapeArgs.y + swidth,
|
|
shapeArgs.width - (swidth * 2),
|
|
shapeArgs.height - (swidth * 2),
|
|
color
|
|
);
|
|
}
|
|
});
|
|
|
|
return;
|
|
}
|
|
|
|
// Extract color axis
|
|
// each(chart.axes || [], function (a) {
|
|
// if (H.ColorAxis && a instanceof H.ColorAxis) {
|
|
// caxis = a;
|
|
// }
|
|
// });
|
|
|
|
while (i < sdata.length - 1) {
|
|
d = sdata[++i];
|
|
|
|
// px = x = y = z = nx = low = false;
|
|
// chartDestroyed = typeof chart.index === 'undefined';
|
|
// nextInside = prevInside = pcolor = isXInside = isYInside = false;
|
|
// drawAsBar = asBar[series.type];
|
|
|
|
if (chartDestroyed) {
|
|
break;
|
|
}
|
|
|
|
// Uncomment this to enable color by point.
|
|
// This currently left disabled as the charts look really ugly
|
|
// when enabled and there's a lot of points.
|
|
// Leaving in for the future (tm).
|
|
// if (colorByPoint) {
|
|
// colorIndex = ++colorIndex % series.chart.options.colors.length;
|
|
// pcolor = toRGBAFast(series.chart.options.colors[colorIndex]);
|
|
// pcolor[0] /= 255.0;
|
|
// pcolor[1] /= 255.0;
|
|
// pcolor[2] /= 255.0;
|
|
// }
|
|
|
|
if (useRaw) {
|
|
x = d[0];
|
|
y = d[1];
|
|
|
|
if (sdata[i + 1]) {
|
|
nx = sdata[i + 1][0];
|
|
}
|
|
|
|
if (sdata[i - 1]) {
|
|
px = sdata[i - 1][0];
|
|
}
|
|
|
|
if (d.length >= 3) {
|
|
z = d[2];
|
|
|
|
if (d[2] > inst.zMax) {
|
|
inst.zMax = d[2];
|
|
}
|
|
|
|
if (d[2] < inst.zMin) {
|
|
inst.zMin = d[2];
|
|
}
|
|
}
|
|
|
|
} else {
|
|
x = d;
|
|
y = yData[i];
|
|
|
|
if (sdata[i + 1]) {
|
|
nx = sdata[i + 1];
|
|
}
|
|
|
|
if (sdata[i - 1]) {
|
|
px = sdata[i - 1];
|
|
}
|
|
|
|
if (zData && zData.length) {
|
|
z = zData[i];
|
|
|
|
if (zData[i] > inst.zMax) {
|
|
inst.zMax = zData[i];
|
|
}
|
|
|
|
if (zData[i] < inst.zMin) {
|
|
inst.zMin = zData[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nx && nx >= xMin && nx <= xMax) {
|
|
nextInside = true;
|
|
}
|
|
|
|
if (px && px >= xMin && px <= xMax) {
|
|
prevInside = true;
|
|
}
|
|
|
|
if (isRange) {
|
|
if (useRaw) {
|
|
y = d.slice(1, 3);
|
|
}
|
|
|
|
low = y[0];
|
|
y = y[1];
|
|
|
|
} else if (isStacked) {
|
|
x = d.x;
|
|
y = d.stackY;
|
|
low = y - d.y;
|
|
}
|
|
|
|
if (!series.requireSorting) {
|
|
isYInside = y >= yMin && y <= yMax;
|
|
}
|
|
|
|
if (x > xMax && closestRight.x < xMax) {
|
|
closestRight.x = x;
|
|
closestRight.y = y;
|
|
}
|
|
|
|
if (x < xMin && closestLeft.x < xMin) {
|
|
closestLeft.x = x;
|
|
closestLeft.y = y;
|
|
}
|
|
|
|
if (y !== 0 && (!y || !isYInside)) {
|
|
continue;
|
|
}
|
|
|
|
if (x >= xMin && x <= xMax) {
|
|
isXInside = true;
|
|
}
|
|
|
|
if (!isXInside && !nextInside && !prevInside) {
|
|
continue;
|
|
}
|
|
|
|
// Skip translations - temporary floating point fix
|
|
if (!settings.useGPUTranslations) {
|
|
inst.skipTranslation = true;
|
|
x = xAxis.toPixels(x, true);
|
|
y = yAxis.toPixels(y, true);
|
|
|
|
// Make sure we're not drawing outside of the chart area.
|
|
// See #6594.
|
|
if (y > plotHeight) {
|
|
y = plotHeight;
|
|
}
|
|
}
|
|
|
|
if (drawAsBar) {
|
|
|
|
maxVal = y;
|
|
minVal = 0;
|
|
|
|
if (y < 0) {
|
|
minVal = y;
|
|
y = 0;
|
|
}
|
|
|
|
if (!settings.useGPUTranslations) {
|
|
minVal = yAxis.toPixels(minVal, true);
|
|
}
|
|
|
|
// Need to add an extra point here
|
|
vertice(x, minVal, 0, 0, pcolor);
|
|
}
|
|
|
|
// No markers on out of bounds things.
|
|
// Out of bound things are shown if and only if the next
|
|
// or previous point is inside the rect.
|
|
if (inst.hasMarkers) { // && isXInside) {
|
|
// x = H.correctFloat(
|
|
// Math.min(Math.max(-1e5, xAxis.translate(
|
|
// x,
|
|
// 0,
|
|
// 0,
|
|
// 0,
|
|
// 1,
|
|
// 0.5,
|
|
// false
|
|
// )), 1e5)
|
|
// );
|
|
|
|
if (lastX !== false) {
|
|
series.closestPointRangePx = Math.min(
|
|
series.closestPointRangePx,
|
|
Math.abs(x - lastX)
|
|
);
|
|
}
|
|
}
|
|
|
|
// If the last _drawn_ point is closer to this point than the
|
|
// threshold, skip it. Shaves off 20-100ms in processing.
|
|
|
|
if (!settings.useGPUTranslations &&
|
|
!settings.usePreallocated &&
|
|
(lastX && x - lastX < cullXThreshold) &&
|
|
(lastY && Math.abs(y - lastY) < cullYThreshold)
|
|
) {
|
|
if (settings.debug.showSkipSummary) {
|
|
++skipped;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
// Do step line if enabled.
|
|
// Draws an additional point at the old Y at the new X.
|
|
// See #6976.
|
|
|
|
if (options.step) {
|
|
vertice(
|
|
x,
|
|
lastY,
|
|
0,
|
|
2,
|
|
pcolor
|
|
);
|
|
}
|
|
|
|
vertice(
|
|
x,
|
|
y,
|
|
0,
|
|
series.type === 'bubble' ? (z || 1) : 2,
|
|
pcolor
|
|
);
|
|
|
|
// Uncomment this to support color axis.
|
|
// if (caxis) {
|
|
// color = H.color(caxis.toColor(y)).rgba;
|
|
|
|
// inst.colorData.push(color[0] / 255.0);
|
|
// inst.colorData.push(color[1] / 255.0);
|
|
// inst.colorData.push(color[2] / 255.0);
|
|
// inst.colorData.push(color[3]);
|
|
// }
|
|
|
|
lastX = x;
|
|
lastY = y;
|
|
}
|
|
|
|
if (settings.debug.showSkipSummary) {
|
|
console.log('skipped points:', skipped); // eslint-disable-line no-console
|
|
}
|
|
|
|
function pushSupplementPoint(point) {
|
|
if (!settings.useGPUTranslations) {
|
|
inst.skipTranslation = true;
|
|
point.x = xAxis.toPixels(point.x, true);
|
|
point.y = yAxis.toPixels(point.y, true);
|
|
}
|
|
|
|
// We should only do this for lines, and we should ignore markers
|
|
// since there's no point here that would have a marker.
|
|
|
|
vertice(
|
|
point.x,
|
|
point.y,
|
|
0,
|
|
2
|
|
);
|
|
}
|
|
|
|
if (!lastX) {
|
|
// There are no points within the selected range
|
|
pushSupplementPoint(closestLeft);
|
|
pushSupplementPoint(closestRight);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Push a series to the renderer
|
|
* If we render the series immediatly, we don't have to loop later
|
|
* @param s {Highchart.Series} - the series to push
|
|
*/
|
|
function pushSeries(s) {
|
|
if (series.length > 0) {
|
|
series[series.length - 1].to = data.length;
|
|
if (series[series.length - 1].hasMarkers) {
|
|
series[series.length - 1].markerTo = markerData.length;
|
|
}
|
|
}
|
|
|
|
if (settings.debug.timeSeriesProcessing) {
|
|
console.time('building ' + s.type + ' series'); // eslint-disable-line no-console
|
|
}
|
|
|
|
series.push({
|
|
from: data.length,
|
|
markerFrom: markerData.length,
|
|
// Push RGBA values to this array to use per. point coloring.
|
|
// It should be 0-padded, so each component should be pushed in
|
|
// succession.
|
|
colorData: [],
|
|
series: s,
|
|
zMin: Number.MAX_VALUE,
|
|
zMax: -Number.MAX_VALUE,
|
|
hasMarkers: s.options.marker ? s.options.marker.enabled !== false : false,
|
|
showMarksers: true,
|
|
drawMode: ({
|
|
'area': 'lines',
|
|
'arearange': 'lines',
|
|
'areaspline': 'line_strip',
|
|
'column': 'lines',
|
|
'bar': 'lines',
|
|
'line': 'line_strip',
|
|
'scatter': 'points',
|
|
'heatmap': 'triangles',
|
|
'treemap': 'triangles',
|
|
'bubble': 'points'
|
|
})[s.type] || 'line_strip'
|
|
});
|
|
|
|
// Add the series data to our buffer(s)
|
|
pushSeriesData(s, series[series.length - 1]);
|
|
|
|
if (settings.debug.timeSeriesProcessing) {
|
|
console.timeEnd('building ' + s.type + ' series'); // eslint-disable-line no-console
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Flush the renderer.
|
|
* This removes pushed series and vertices.
|
|
* Should be called after clearing and before rendering
|
|
*/
|
|
function flush() {
|
|
series = [];
|
|
exports.data = data = [];
|
|
markerData = [];
|
|
|
|
if (vbuffer) {
|
|
vbuffer.destroy();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Pass x-axis to shader
|
|
* @param axis {Highcharts.Axis} - the x-axis
|
|
*/
|
|
function setXAxis(axis) {
|
|
if (!shader) {
|
|
return;
|
|
}
|
|
|
|
shader.setUniform('xAxisTrans', axis.transA);
|
|
shader.setUniform('xAxisMin', axis.min);
|
|
shader.setUniform('xAxisMinPad', axis.minPixelPadding);
|
|
shader.setUniform('xAxisPointRange', axis.pointRange);
|
|
shader.setUniform('xAxisLen', axis.len);
|
|
shader.setUniform('xAxisPos', axis.pos);
|
|
shader.setUniform('xAxisCVSCoord', !axis.horiz);
|
|
}
|
|
|
|
/*
|
|
* Pass y-axis to shader
|
|
* @param axis {Highcharts.Axis} - the y-axis
|
|
*/
|
|
function setYAxis(axis) {
|
|
if (!shader) {
|
|
return;
|
|
}
|
|
|
|
shader.setUniform('yAxisTrans', axis.transA);
|
|
shader.setUniform('yAxisMin', axis.min);
|
|
shader.setUniform('yAxisMinPad', axis.minPixelPadding);
|
|
shader.setUniform('yAxisPointRange', axis.pointRange);
|
|
shader.setUniform('yAxisLen', axis.len);
|
|
shader.setUniform('yAxisPos', axis.pos);
|
|
shader.setUniform('yAxisCVSCoord', !axis.horiz);
|
|
}
|
|
|
|
/*
|
|
* Set the translation threshold
|
|
* @param has {boolean} - has threshold flag
|
|
* @param translation {Float} - the threshold
|
|
*/
|
|
function setThreshold(has, translation) {
|
|
shader.setUniform('hasThreshold', has);
|
|
shader.setUniform('translatedThreshold', translation);
|
|
}
|
|
|
|
/*
|
|
* Render the data
|
|
* This renders all pushed series.
|
|
*/
|
|
function render(chart) {
|
|
|
|
if (chart) {
|
|
if (!chart.chartHeight || !chart.chartWidth) {
|
|
// chart.setChartSize();
|
|
}
|
|
|
|
width = chart.chartWidth || 800;
|
|
height = chart.chartHeight || 400;
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
if (!gl || !width || !height) {
|
|
return false;
|
|
}
|
|
|
|
if (settings.debug.timeRendering) {
|
|
console.time('gl rendering'); // eslint-disable-line no-console
|
|
}
|
|
|
|
gl.canvas.width = width;
|
|
gl.canvas.height = height;
|
|
|
|
shader.bind();
|
|
|
|
|
|
gl.viewport(0, 0, width, height);
|
|
shader.setPMatrix(orthoMatrix(width, height));
|
|
shader.setPlotHeight(chart.plotHeight);
|
|
|
|
if (settings.lineWidth > 1 && !H.isMS) {
|
|
gl.lineWidth(settings.lineWidth);
|
|
}
|
|
|
|
vbuffer.build(exports.data, 'aVertexPosition', 4);
|
|
vbuffer.bind();
|
|
|
|
if (textureIsReady) {
|
|
gl.bindTexture(gl.TEXTURE_2D, circleTextureHandle);
|
|
shader.setTexture(circleTextureHandle);
|
|
}
|
|
|
|
shader.setInverted(chart.inverted); // chart.options.chart ? chart.options.chart.inverted : false);
|
|
|
|
|
|
// Render the series
|
|
each(series, function(s, si) {
|
|
var options = s.series.options,
|
|
threshold = options.threshold,
|
|
hasThreshold = isNumber(threshold),
|
|
yBottom = s.series.yAxis.getThreshold(threshold),
|
|
translatedThreshold = yBottom,
|
|
cbuffer,
|
|
showMarkers = pick(
|
|
options.marker ? options.marker.enabled : null,
|
|
s.series.xAxis.isRadial ? true : null,
|
|
s.series.closestPointRangePx >
|
|
2 * ((
|
|
options.marker ?
|
|
options.marker.radius :
|
|
10
|
|
) || 10)
|
|
),
|
|
fillColor =
|
|
(s.series.pointAttribs && s.series.pointAttribs().fill) ||
|
|
s.series.color,
|
|
color;
|
|
|
|
if (s.series.fillOpacity && options.fillOpacity) {
|
|
fillColor = new Color(fillColor).setOpacity(
|
|
pick(options.fillOpacity, 1.0)
|
|
).get();
|
|
}
|
|
|
|
if (options.colorByPoint) {
|
|
fillColor = s.series.chart.options.colors[si];
|
|
}
|
|
|
|
color = H.color(fillColor).rgba;
|
|
|
|
if (!settings.useAlpha) {
|
|
color[3] = 1.0;
|
|
}
|
|
|
|
// This is very much temporary
|
|
if (s.drawMode === 'lines' && settings.useAlpha && color[3] < 1) {
|
|
color[3] /= 10;
|
|
}
|
|
|
|
// Blending
|
|
if (options.boostBlending === 'add') {
|
|
gl.blendFunc(gl.SRC_ALPHA, gl.ONE);
|
|
gl.blendEquation(gl.FUNC_ADD);
|
|
|
|
} else if (options.boostBlending === 'mult') {
|
|
gl.blendFunc(gl.DST_COLOR, gl.ZERO);
|
|
|
|
} else if (options.boostBlending === 'darken') {
|
|
gl.blendFunc(gl.ONE, gl.ONE);
|
|
gl.blendEquation(gl.FUNC_MIN);
|
|
|
|
} else {
|
|
// gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);//, gl.ONE, gl.ZERO);
|
|
// gl.blendEquation(gl.FUNC_ADD);
|
|
gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
|
|
}
|
|
|
|
shader.reset();
|
|
|
|
// If there are entries in the colorData buffer, build and bind it.
|
|
if (s.colorData.length > 0) {
|
|
shader.setUniform('hasColor', 1.0);
|
|
cbuffer = GLVertexBuffer(gl, shader); // eslint-disable-line new-cap
|
|
cbuffer.build(s.colorData, 'aColor', 4);
|
|
cbuffer.bind();
|
|
}
|
|
|
|
// Set series specific uniforms
|
|
shader.setColor(color);
|
|
setXAxis(s.series.xAxis);
|
|
setYAxis(s.series.yAxis);
|
|
setThreshold(hasThreshold, translatedThreshold);
|
|
|
|
if (s.drawMode === 'points') {
|
|
if (options.marker && options.marker.radius) {
|
|
shader.setPointSize(options.marker.radius * 2.0);
|
|
} else {
|
|
shader.setPointSize(1);
|
|
}
|
|
}
|
|
|
|
// If set to true, the toPixels translations in the shader
|
|
// is skipped, i.e it's assumed that the value is a pixel coord.
|
|
shader.setSkipTranslation(s.skipTranslation);
|
|
|
|
if (s.series.type === 'bubble') {
|
|
shader.setBubbleUniforms(s.series, s.zMin, s.zMax);
|
|
}
|
|
|
|
shader.setDrawAsCircle((asCircle[s.series.type] && textureIsReady) || false);
|
|
|
|
// Do the actual rendering
|
|
vbuffer.render(s.from, s.to, s.drawMode);
|
|
|
|
if (s.hasMarkers && showMarkers) {
|
|
if (options.marker && options.marker.radius) {
|
|
shader.setPointSize(options.marker.radius * 2.0);
|
|
} else {
|
|
shader.setPointSize(10);
|
|
}
|
|
shader.setDrawAsCircle(true);
|
|
vbuffer.render(s.from, s.to, 'POINTS');
|
|
}
|
|
});
|
|
|
|
if (settings.debug.timeRendering) {
|
|
console.timeEnd('gl rendering'); // eslint-disable-line no-console
|
|
}
|
|
|
|
if (postRenderCallback) {
|
|
postRenderCallback();
|
|
}
|
|
|
|
flush();
|
|
}
|
|
|
|
/*
|
|
* Render the data when ready
|
|
*/
|
|
function renderWhenReady(chart) {
|
|
clear();
|
|
|
|
if (chart.renderer.forExport) {
|
|
return render(chart);
|
|
}
|
|
|
|
if (isInited) {
|
|
render(chart);
|
|
} else {
|
|
setTimeout(function() {
|
|
renderWhenReady(chart);
|
|
}, 1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set the viewport size in pixels
|
|
* Creates an orthographic perspective matrix and applies it.
|
|
* @param w {Integer} - the width of the viewport
|
|
* @param h {Integer} - the height of the viewport
|
|
*/
|
|
function setSize(w, h) {
|
|
// Skip if there's no change
|
|
if (width === w && h === h) {
|
|
return;
|
|
}
|
|
|
|
width = w;
|
|
height = h;
|
|
|
|
shader.bind();
|
|
shader.setPMatrix(orthoMatrix(width, height));
|
|
}
|
|
|
|
/*
|
|
* Init OpenGL
|
|
* @param canvas {HTMLCanvas} - the canvas to render to
|
|
*/
|
|
function init(canvas, noFlush) {
|
|
var i = 0,
|
|
contexts = [
|
|
'webgl',
|
|
'experimental-webgl',
|
|
'moz-webgl',
|
|
'webkit-3d'
|
|
];
|
|
|
|
isInited = false;
|
|
|
|
if (!canvas) {
|
|
return false;
|
|
}
|
|
|
|
if (settings.debug.timeSetup) {
|
|
console.time('gl setup'); // eslint-disable-line no-console
|
|
}
|
|
|
|
for (; i < contexts.length; i++) {
|
|
gl = canvas.getContext(contexts[i], {
|
|
// premultipliedAlpha: false
|
|
});
|
|
if (gl) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (gl) {
|
|
if (!noFlush) {
|
|
flush();
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
gl.enable(gl.BLEND);
|
|
// gl.blendFunc(gl.SRC_ALPHA, gl.ONE);
|
|
gl.blendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA);
|
|
gl.disable(gl.DEPTH_TEST);
|
|
// gl.depthMask(gl.FALSE);
|
|
gl.depthFunc(gl.LESS);
|
|
|
|
shader = GLShader(gl); // eslint-disable-line new-cap
|
|
vbuffer = GLVertexBuffer(gl, shader); // eslint-disable-line new-cap
|
|
|
|
textureIsReady = false;
|
|
|
|
// Set up the circle texture used for bubbles
|
|
circleTextureHandle = gl.createTexture();
|
|
|
|
// Draw the circle
|
|
circleTexture.width = 512;
|
|
circleTexture.height = 512;
|
|
|
|
circleCtx.mozImageSmoothingEnabled = false;
|
|
circleCtx.webkitImageSmoothingEnabled = false;
|
|
circleCtx.msImageSmoothingEnabled = false;
|
|
circleCtx.imageSmoothingEnabled = false;
|
|
|
|
circleCtx.strokeStyle = 'rgba(255, 255, 255, 0)';
|
|
circleCtx.fillStyle = '#FFF';
|
|
|
|
circleCtx.beginPath();
|
|
circleCtx.arc(256, 256, 256, 0, 2 * Math.PI);
|
|
circleCtx.stroke();
|
|
circleCtx.fill();
|
|
|
|
try {
|
|
|
|
gl.bindTexture(gl.TEXTURE_2D, circleTextureHandle);
|
|
// gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
|
|
|
|
gl.texImage2D(
|
|
gl.TEXTURE_2D,
|
|
0,
|
|
gl.RGBA,
|
|
gl.RGBA,
|
|
gl.UNSIGNED_BYTE,
|
|
circleTexture
|
|
);
|
|
|
|
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
|
|
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
|
|
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
|
|
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
|
|
|
|
// gl.generateMipmap(gl.TEXTURE_2D);
|
|
|
|
gl.bindTexture(gl.TEXTURE_2D, null);
|
|
|
|
textureIsReady = true;
|
|
} catch (e) {}
|
|
|
|
isInited = true;
|
|
|
|
if (settings.debug.timeSetup) {
|
|
console.timeEnd('gl setup'); // eslint-disable-line no-console
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Check if we have a valid OGL context
|
|
* @returns {Boolean} - true if the context is valid
|
|
*/
|
|
function valid() {
|
|
return gl !== false;
|
|
}
|
|
|
|
/*
|
|
* Check if the renderer has been initialized
|
|
* @returns {Boolean} - true if it has, false if not
|
|
*/
|
|
function inited() {
|
|
return isInited;
|
|
}
|
|
|
|
function destroy() {
|
|
flush();
|
|
vbuffer.destroy();
|
|
shader.destroy();
|
|
if (gl) {
|
|
if (circleTextureHandle) {
|
|
gl.deleteTexture(circleTextureHandle);
|
|
}
|
|
gl.canvas.width = 1;
|
|
gl.canvas.height = 1;
|
|
}
|
|
}
|
|
|
|
// /////////////////////////////////////////////////////////////////////////
|
|
exports = {
|
|
allocateBufferForSingleSeries: allocateBufferForSingleSeries,
|
|
pushSeries: pushSeries,
|
|
setSize: setSize,
|
|
inited: inited,
|
|
setThreshold: setThreshold,
|
|
init: init,
|
|
render: renderWhenReady,
|
|
settings: settings,
|
|
valid: valid,
|
|
clear: clear,
|
|
flush: flush,
|
|
setXAxis: setXAxis,
|
|
setYAxis: setYAxis,
|
|
data: data,
|
|
gl: getGL,
|
|
allocateBuffer: allocateBuffer,
|
|
destroy: destroy,
|
|
setOptions: setOptions
|
|
};
|
|
|
|
return exports;
|
|
}
|
|
|
|
// END OF WEBGL ABSTRACTIONS
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
|
|
/*
|
|
* Create a canvas + context and attach it to the target
|
|
* @param target {Highcharts.Chart|Highcharts.Series} - the canvas target
|
|
* @param chart {Highcharts.Chart} - the chart
|
|
*/
|
|
function createAndAttachRenderer(chart, series) {
|
|
var width = chart.chartWidth,
|
|
height = chart.chartHeight,
|
|
target = chart,
|
|
targetGroup = chart.seriesGroup || series.group,
|
|
alpha = 1,
|
|
foSupported = doc.implementation.hasFeature(
|
|
'www.http://w3.org/TR/SVG11/feature#Extensibility',
|
|
'1.1'
|
|
);
|
|
|
|
if (chart.isChartSeriesBoosting()) {
|
|
target = chart;
|
|
} else {
|
|
target = series;
|
|
}
|
|
|
|
// Support for foreignObject is flimsy as best.
|
|
// IE does not support it, and Chrome has a bug which messes up
|
|
// the canvas draw order.
|
|
// As such, we force the Image fallback for now, but leaving the
|
|
// actual Canvas path in-place in case this changes in the future.
|
|
foSupported = false;
|
|
|
|
if (!target.renderTarget) {
|
|
target.canvas = mainCanvas;
|
|
|
|
// Fall back to image tag if foreignObject isn't supported,
|
|
// or if we're exporting.
|
|
if (chart.renderer.forExport || !foSupported) {
|
|
target.renderTarget = chart.renderer.image(
|
|
'',
|
|
0,
|
|
0,
|
|
width,
|
|
height
|
|
)
|
|
.addClass('highcharts-boost-canvas')
|
|
.add(targetGroup);
|
|
|
|
target.boostClear = function() {
|
|
target.renderTarget.attr({
|
|
href: ''
|
|
});
|
|
};
|
|
|
|
target.boostCopy = function() {
|
|
target.boostResizeTarget();
|
|
target.renderTarget.attr({
|
|
href: target.canvas.toDataURL('image/png')
|
|
});
|
|
};
|
|
|
|
} else {
|
|
target.renderTargetFo = chart.renderer.createElement('foreignObject')
|
|
.add(targetGroup);
|
|
|
|
target.renderTarget = doc.createElement('canvas');
|
|
target.renderTargetCtx = target.renderTarget.getContext('2d');
|
|
|
|
target.renderTargetFo.element.appendChild(target.renderTarget);
|
|
|
|
target.boostClear = function() {
|
|
target.renderTarget.width = target.canvas.width;
|
|
target.renderTarget.height = target.canvas.height;
|
|
};
|
|
|
|
target.boostCopy = function() {
|
|
target.renderTarget.width = target.canvas.width;
|
|
target.renderTarget.height = target.canvas.height;
|
|
|
|
target.renderTargetCtx.drawImage(target.canvas, 0, 0);
|
|
};
|
|
}
|
|
|
|
target.boostResizeTarget = function() {
|
|
width = chart.chartWidth;
|
|
height = chart.chartHeight;
|
|
|
|
(target.renderTargetFo || target.renderTarget)
|
|
.attr({
|
|
x: 0,
|
|
y: 0,
|
|
width: width,
|
|
height: height
|
|
})
|
|
.css({
|
|
pointerEvents: 'none',
|
|
mixedBlendMode: 'normal',
|
|
opacity: alpha
|
|
});
|
|
|
|
if (target instanceof H.Chart) {
|
|
target.markerGroup.translate(series.xAxis.pos, series.yAxis.pos);
|
|
}
|
|
};
|
|
|
|
target.boostClipRect = chart.renderer.clipRect();
|
|
|
|
(target.renderTargetFo || target.renderTarget).clip(target.boostClipRect);
|
|
|
|
if (target instanceof H.Chart) {
|
|
target.markerGroup = target.renderer.g().add(targetGroup);
|
|
|
|
target.markerGroup.translate(series.xAxis.pos, series.yAxis.pos);
|
|
}
|
|
}
|
|
|
|
target.canvas.width = width;
|
|
target.canvas.height = height;
|
|
|
|
target.boostClipRect.attr(chart.getBoostClipRect(target));
|
|
|
|
target.boostResizeTarget();
|
|
target.boostClear();
|
|
|
|
if (!target.ogl) {
|
|
target.ogl = GLRenderer(function() { // eslint-disable-line new-cap
|
|
if (target.ogl.settings.debug.timeBufferCopy) {
|
|
console.time('buffer copy'); // eslint-disable-line no-console
|
|
}
|
|
|
|
target.boostCopy();
|
|
|
|
if (target.ogl.settings.debug.timeBufferCopy) {
|
|
console.timeEnd('buffer copy'); // eslint-disable-line no-console
|
|
}
|
|
|
|
}); // eslint-disable-line new-cap
|
|
|
|
target.ogl.init(target.canvas);
|
|
// target.ogl.clear();
|
|
target.ogl.setOptions(chart.options.boost || {});
|
|
|
|
if (target instanceof H.Chart) {
|
|
target.ogl.allocateBuffer(chart);
|
|
}
|
|
}
|
|
|
|
target.ogl.setSize(width, height);
|
|
|
|
return target.ogl;
|
|
}
|
|
|
|
/*
|
|
* Performs the actual render if the renderer is
|
|
* attached to the series.
|
|
* @param renderer {OGLRenderer} - the renderer
|
|
* @param series {Highcharts.Series} - the series
|
|
*/
|
|
function renderIfNotSeriesBoosting(renderer, series, chart) {
|
|
if (renderer &&
|
|
series.renderTarget &&
|
|
series.canvas &&
|
|
!(chart || series.chart).isChartSeriesBoosting()
|
|
) {
|
|
renderer.render(chart || series.chart);
|
|
}
|
|
}
|
|
|
|
function allocateIfNotSeriesBoosting(renderer, series) {
|
|
if (renderer &&
|
|
series.renderTarget &&
|
|
series.canvas &&
|
|
!series.chart.isChartSeriesBoosting()
|
|
) {
|
|
renderer.allocateBufferForSingleSeries(series);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* An "async" foreach loop. Uses a setTimeout to keep the loop from blocking the
|
|
* UI thread.
|
|
*
|
|
* @param arr {Array} - the array to loop through
|
|
* @param fn {Function} - the callback to call for each item
|
|
* @param finalFunc {Function} - the callback to call when done
|
|
* @param chunkSize {Number} - the number of iterations per timeout
|
|
* @param i {Number} - the current index
|
|
* @param noTimeout {Boolean} - set to true to skip timeouts
|
|
*/
|
|
H.eachAsync = function(arr, fn, finalFunc, chunkSize, i, noTimeout) {
|
|
i = i || 0;
|
|
chunkSize = chunkSize || CHUNK_SIZE;
|
|
|
|
var threshold = i + chunkSize,
|
|
proceed = true;
|
|
|
|
while (proceed && i < threshold && i < arr.length) {
|
|
proceed = fn(arr[i], i);
|
|
++i;
|
|
}
|
|
|
|
if (proceed) {
|
|
if (i < arr.length) {
|
|
|
|
if (noTimeout) {
|
|
H.eachAsync(arr, fn, finalFunc, chunkSize, i, noTimeout);
|
|
} else if (win.requestAnimationFrame) {
|
|
// If available, do requestAnimationFrame - shaves off a few ms
|
|
win.requestAnimationFrame(function() {
|
|
H.eachAsync(arr, fn, finalFunc, chunkSize, i);
|
|
});
|
|
} else {
|
|
setTimeout(function() {
|
|
H.eachAsync(arr, fn, finalFunc, chunkSize, i);
|
|
});
|
|
}
|
|
|
|
} else if (finalFunc) {
|
|
finalFunc();
|
|
}
|
|
}
|
|
};
|
|
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
// Following is the parts of the boost that's common between OGL/Legacy
|
|
|
|
/**
|
|
* Return a full Point object based on the index.
|
|
* The boost module uses stripped point objects for performance reasons.
|
|
* @param {Number} boostPoint A stripped-down point object
|
|
* @returns {Object} A Point object as per http://api.highcharts.com/highcharts#Point
|
|
*/
|
|
Series.prototype.getPoint = function(boostPoint) {
|
|
var point = boostPoint,
|
|
xData = this.xData || this.options.xData || this.processedXData || false;
|
|
|
|
if (boostPoint && !(boostPoint instanceof this.pointClass)) {
|
|
point = (new this.pointClass()).init( // eslint-disable-line new-cap
|
|
this,
|
|
this.options.data[boostPoint.i],
|
|
xData ? xData[boostPoint.i] : undefined
|
|
);
|
|
|
|
point.category = point.x;
|
|
|
|
point.dist = boostPoint.dist;
|
|
point.distX = boostPoint.distX;
|
|
point.plotX = boostPoint.plotX;
|
|
point.plotY = boostPoint.plotY;
|
|
point.index = boostPoint.i;
|
|
}
|
|
|
|
return point;
|
|
};
|
|
|
|
/**
|
|
* Return a point instance from the k-d-tree
|
|
*/
|
|
wrap(Series.prototype, 'searchPoint', function(proceed) {
|
|
return this.getPoint(
|
|
proceed.apply(this, [].slice.call(arguments, 1))
|
|
);
|
|
});
|
|
|
|
/**
|
|
* Extend series.destroy to also remove the fake k-d-tree points (#5137).
|
|
* Normally this is handled by Series.destroy that calls Point.destroy,
|
|
* but the fake search points are not registered like that.
|
|
*/
|
|
wrap(Series.prototype, 'destroy', function(proceed) {
|
|
var series = this,
|
|
chart = series.chart;
|
|
|
|
if (chart.markerGroup === series.markerGroup) {
|
|
series.markerGroup = null;
|
|
}
|
|
|
|
if (chart.hoverPoints) {
|
|
chart.hoverPoints = grep(chart.hoverPoints, function(point) {
|
|
return point.series === series;
|
|
});
|
|
}
|
|
|
|
if (chart.hoverPoint && chart.hoverPoint.series === series) {
|
|
chart.hoverPoint = null;
|
|
}
|
|
|
|
proceed.call(this);
|
|
});
|
|
|
|
/**
|
|
* Do not compute extremes when min and max are set.
|
|
* If we use this in the core, we can add the hook
|
|
* to hasExtremes to the methods directly.
|
|
*/
|
|
wrap(Series.prototype, 'getExtremes', function(proceed) {
|
|
if (!this.isSeriesBoosting || (!this.hasExtremes || !this.hasExtremes())) {
|
|
return proceed.apply(this, Array.prototype.slice.call(arguments, 1));
|
|
}
|
|
});
|
|
|
|
// Set default options
|
|
each(boostable,
|
|
function(type) {
|
|
if (plotOptions[type]) {
|
|
plotOptions[type].boostThreshold = 5000;
|
|
plotOptions[type].boostData = [];
|
|
|
|
seriesTypes[type].prototype.fillOpacity = true;
|
|
}
|
|
}
|
|
);
|
|
|
|
/**
|
|
* Override a bunch of methods the same way. If the number of points is
|
|
* below the threshold, run the original method. If not, check for a
|
|
* canvas version or do nothing.
|
|
*
|
|
* Note that we're not overriding any of these for heatmaps.
|
|
*/
|
|
each([
|
|
'translate',
|
|
'generatePoints',
|
|
'drawTracker',
|
|
'drawPoints',
|
|
'render'
|
|
], function(method) {
|
|
function branch(proceed) {
|
|
var letItPass = this.options.stacking &&
|
|
(method === 'translate' || method === 'generatePoints'),
|
|
enabled = true;
|
|
|
|
if (this.chart && this.chart.options && this.chart.options.boost) {
|
|
enabled = typeof this.chart.options.boost.enabled === 'undefined' ?
|
|
true :
|
|
this.chart.options.boost.enabled;
|
|
}
|
|
|
|
if (!this.isSeriesBoosting ||
|
|
letItPass ||
|
|
!enabled ||
|
|
this.type === 'heatmap' ||
|
|
this.type === 'treemap'
|
|
) {
|
|
|
|
proceed.call(this);
|
|
|
|
// If a canvas version of the method exists, like renderCanvas(), run
|
|
} else if (this[method + 'Canvas']) {
|
|
this[method + 'Canvas']();
|
|
}
|
|
}
|
|
|
|
wrap(Series.prototype, method, branch);
|
|
|
|
// A special case for some types - their translate method is already wrapped
|
|
if (method === 'translate') {
|
|
if (seriesTypes.column) {
|
|
wrap(seriesTypes.column.prototype, method, branch);
|
|
}
|
|
|
|
if (seriesTypes.bar) {
|
|
wrap(seriesTypes.bar.prototype, method, branch);
|
|
}
|
|
|
|
if (seriesTypes.arearange) {
|
|
wrap(seriesTypes.arearange.prototype, method, branch);
|
|
}
|
|
|
|
if (seriesTypes.treemap) {
|
|
wrap(seriesTypes.treemap.prototype, method, branch);
|
|
}
|
|
|
|
if (seriesTypes.heatmap) {
|
|
wrap(seriesTypes.heatmap.prototype, method, branch);
|
|
}
|
|
}
|
|
});
|
|
|
|
/** If the series is a heatmap or treemap, or if the series is not boosting
|
|
* do the default behaviour. Otherwise, process if the series has no
|
|
* extremes.
|
|
*/
|
|
wrap(Series.prototype, 'processData', function(proceed) {
|
|
|
|
var series = this,
|
|
dataToMeasure = this.options.data;
|
|
|
|
// Used twice in this function, first on this.options.data, the second
|
|
// time it runs the check again after processedXData is built.
|
|
// @todo Check what happens with data grouping
|
|
function getSeriesBoosting(data) {
|
|
return series.chart.isChartSeriesBoosting() || (
|
|
(data ? data.length : 0) >=
|
|
(series.options.boostThreshold || Number.MAX_VALUE)
|
|
);
|
|
}
|
|
|
|
// If there are no extremes given in the options, we also need to process
|
|
// the data to read the data extremes. If this is a heatmap, do default
|
|
// behaviour.
|
|
if (!getSeriesBoosting(dataToMeasure) || // First pass with options.data
|
|
this.type === 'heatmap' ||
|
|
this.type === 'treemap' ||
|
|
this.options.stacking || // we need processedYData for the stack (#7481)
|
|
!this.hasExtremes ||
|
|
!this.hasExtremes(true)
|
|
) {
|
|
proceed.apply(this, Array.prototype.slice.call(arguments, 1));
|
|
dataToMeasure = this.processedXData;
|
|
}
|
|
|
|
/*
|
|
if (!this.hasExtremes || !this.hasExtremes(true)) {
|
|
proceed.apply(this, Array.prototype.slice.call(arguments, 1));
|
|
}
|
|
*/
|
|
|
|
// Set the isBoosting flag, second pass with processedXData to see if we
|
|
// have zoomed.
|
|
this.isSeriesBoosting = getSeriesBoosting(dataToMeasure);
|
|
|
|
// Enter or exit boost mode
|
|
if (this.isSeriesBoosting) {
|
|
this.enterBoost();
|
|
} else if (this.exitBoost) {
|
|
this.exitBoost();
|
|
}
|
|
});
|
|
|
|
wrap(Series.prototype, 'setVisible', function(proceed, vis, redraw) {
|
|
proceed.call(this, vis, redraw);
|
|
if (this.visible === false && this.canvas && this.renderTarget) {
|
|
if (this.ogl) {
|
|
this.ogl.clear();
|
|
}
|
|
this.boostClear();
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Enter boost mode and apply boost-specific properties.
|
|
*/
|
|
Series.prototype.enterBoost = function() {
|
|
|
|
this.alteredByBoost = [];
|
|
|
|
// Save the original values, including whether it was an own property or
|
|
// inherited from the prototype.
|
|
each(['allowDG', 'directTouch', 'stickyTracking'], function(prop) {
|
|
this.alteredByBoost.push({
|
|
prop: prop,
|
|
val: this[prop],
|
|
own: this.hasOwnProperty(prop)
|
|
});
|
|
}, this);
|
|
|
|
this.allowDG = false;
|
|
this.directTouch = false;
|
|
this.stickyTracking = true;
|
|
|
|
// Once we've been in boost mode, we don't want animation when returning to
|
|
// vanilla mode.
|
|
this.animate = null;
|
|
|
|
// Hide series label if any
|
|
if (this.labelBySeries) {
|
|
this.labelBySeries = this.labelBySeries.destroy();
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Exit from boost mode and restore non-boost properties.
|
|
*/
|
|
Series.prototype.exitBoost = function() {
|
|
// Reset instance properties and/or delete instance properties and go back
|
|
// to prototype
|
|
each(this.alteredByBoost || [], function(setting) {
|
|
if (setting.own) {
|
|
this[setting.prop] = setting.val;
|
|
} else {
|
|
// Revert to prototype
|
|
delete this[setting.prop];
|
|
}
|
|
}, this);
|
|
|
|
// Clear previous run
|
|
if (this.boostClear) {
|
|
this.boostClear();
|
|
}
|
|
|
|
};
|
|
|
|
Series.prototype.hasExtremes = function(checkX) {
|
|
var options = this.options,
|
|
data = options.data,
|
|
xAxis = this.xAxis && this.xAxis.options,
|
|
yAxis = this.yAxis && this.yAxis.options;
|
|
|
|
return data.length > (options.boostThreshold || Number.MAX_VALUE) &&
|
|
isNumber(yAxis.min) && isNumber(yAxis.max) &&
|
|
(!checkX || (isNumber(xAxis.min) && isNumber(xAxis.max)));
|
|
};
|
|
|
|
/**
|
|
* If implemented in the core, parts of this can probably be
|
|
* shared with other similar methods in Highcharts.
|
|
*/
|
|
Series.prototype.destroyGraphics = function() {
|
|
var series = this,
|
|
points = this.points,
|
|
point,
|
|
i;
|
|
|
|
if (points) {
|
|
for (i = 0; i < points.length; i = i + 1) {
|
|
point = points[i];
|
|
if (point && point.graphic) {
|
|
point.graphic = point.graphic.destroy();
|
|
}
|
|
}
|
|
}
|
|
|
|
each(['graph', 'area', 'tracker'], function(prop) {
|
|
if (series[prop]) {
|
|
series[prop] = series[prop].destroy();
|
|
}
|
|
});
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
* Returns true if the current browser supports webgl
|
|
*/
|
|
function hasWebGLSupport() {
|
|
var i = 0,
|
|
canvas,
|
|
contexts = ['webgl', 'experimental-webgl', 'moz-webgl', 'webkit-3d'],
|
|
context = false;
|
|
|
|
if (typeof win.WebGLRenderingContext !== 'undefined') {
|
|
canvas = doc.createElement('canvas');
|
|
|
|
for (; i < contexts.length; i++) {
|
|
try {
|
|
context = canvas.getContext(contexts[i]);
|
|
if (typeof context !== 'undefined' && context !== null) {
|
|
return true;
|
|
}
|
|
} catch (e) {
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Used for treemap|heatmap.drawPoints */
|
|
function pointDrawHandler(proceed) {
|
|
var enabled = true,
|
|
renderer;
|
|
|
|
if (this.chart.options && this.chart.options.boost) {
|
|
enabled = typeof this.chart.options.boost.enabled === 'undefined' ?
|
|
true :
|
|
this.chart.options.boost.enabled;
|
|
}
|
|
|
|
if (!enabled || !this.isSeriesBoosting) {
|
|
return proceed.call(this);
|
|
}
|
|
|
|
this.chart.isBoosting = true;
|
|
|
|
// Make sure we have a valid OGL context
|
|
renderer = createAndAttachRenderer(this.chart, this);
|
|
|
|
if (renderer) {
|
|
allocateIfNotSeriesBoosting(renderer, this);
|
|
renderer.pushSeries(this);
|
|
}
|
|
|
|
renderIfNotSeriesBoosting(renderer, this);
|
|
}
|
|
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
// We're wrapped in a closure, so just return if there's no webgl support
|
|
|
|
if (!hasWebGLSupport()) {
|
|
if (typeof H.initCanvasBoost !== 'undefined') {
|
|
// Fallback to canvas boost
|
|
H.initCanvasBoost();
|
|
} else {
|
|
H.error(26);
|
|
}
|
|
} else {
|
|
|
|
// /////////////////////////////////////////////////////////////////////////
|
|
// GL-SPECIFIC WRAPPINGS FOLLOWS
|
|
|
|
|
|
|
|
H.extend(Series.prototype, {
|
|
|
|
renderCanvas: function() {
|
|
var series = this,
|
|
options = series.options || {},
|
|
renderer = false,
|
|
chart = series.chart,
|
|
xAxis = this.xAxis,
|
|
yAxis = this.yAxis,
|
|
xData = options.xData || series.processedXData,
|
|
yData = options.yData || series.processedYData,
|
|
rawData = options.data,
|
|
xExtremes = xAxis.getExtremes(),
|
|
xMin = xExtremes.min,
|
|
xMax = xExtremes.max,
|
|
yExtremes = yAxis.getExtremes(),
|
|
yMin = yExtremes.min,
|
|
yMax = yExtremes.max,
|
|
pointTaken = {},
|
|
lastClientX,
|
|
sampling = !!series.sampling,
|
|
points,
|
|
enableMouseTracking = options.enableMouseTracking !== false,
|
|
threshold = options.threshold,
|
|
yBottom = yAxis.getThreshold(threshold),
|
|
isRange = series.pointArrayMap &&
|
|
series.pointArrayMap.join(',') === 'low,high',
|
|
isStacked = !!options.stacking,
|
|
cropStart = series.cropStart || 0,
|
|
requireSorting = series.requireSorting,
|
|
useRaw = !xData,
|
|
minVal,
|
|
maxVal,
|
|
minI,
|
|
maxI,
|
|
boostOptions,
|
|
|
|
xDataFull = this.xData || this.options.xData || this.processedXData || false,
|
|
|
|
addKDPoint = function(clientX, plotY, i) {
|
|
// Shaves off about 60ms compared to repeated concatination
|
|
index = clientX + ',' + plotY;
|
|
|
|
// The k-d tree requires series points.
|
|
// Reduce the amount of points, since the time to build the
|
|
// tree increases exponentially.
|
|
if (enableMouseTracking && !pointTaken[index]) {
|
|
pointTaken[index] = true;
|
|
|
|
if (chart.inverted) {
|
|
clientX = xAxis.len - clientX;
|
|
plotY = yAxis.len - plotY;
|
|
}
|
|
|
|
points.push({
|
|
x: xDataFull ? xDataFull[cropStart + i] : false,
|
|
clientX: clientX,
|
|
plotX: clientX,
|
|
plotY: plotY,
|
|
i: cropStart + i
|
|
});
|
|
}
|
|
};
|
|
|
|
// Get or create the renderer
|
|
renderer = createAndAttachRenderer(chart, series);
|
|
|
|
chart.isBoosting = true;
|
|
|
|
boostOptions = renderer.settings;
|
|
|
|
if (!this.visible) {
|
|
return;
|
|
}
|
|
|
|
// If we are zooming out from SVG mode, destroy the graphics
|
|
if (this.points || this.graph) {
|
|
|
|
this.animate = null;
|
|
this.destroyGraphics();
|
|
}
|
|
|
|
// If we're rendering per. series we should create the marker groups
|
|
// as usual.
|
|
if (!chart.isChartSeriesBoosting()) {
|
|
this.markerGroup = series.plotGroup(
|
|
'markerGroup',
|
|
'markers',
|
|
true,
|
|
1,
|
|
chart.seriesGroup
|
|
);
|
|
} else {
|
|
// Use a single group for the markers
|
|
this.markerGroup = chart.markerGroup;
|
|
}
|
|
|
|
points = this.points = [];
|
|
|
|
// Do not start building while drawing
|
|
series.buildKDTree = noop;
|
|
|
|
if (renderer) {
|
|
allocateIfNotSeriesBoosting(renderer, this);
|
|
renderer.pushSeries(series);
|
|
// Perform the actual renderer if we're on series level
|
|
renderIfNotSeriesBoosting(renderer, this, chart);
|
|
// console.log(series, chart);
|
|
}
|
|
|
|
/* This builds the KD-tree */
|
|
function processPoint(d, i) {
|
|
var x,
|
|
y,
|
|
clientX,
|
|
plotY,
|
|
isNull,
|
|
low,
|
|
chartDestroyed = typeof chart.index === 'undefined',
|
|
isYInside = true;
|
|
|
|
if (!chartDestroyed) {
|
|
if (useRaw) {
|
|
x = d[0];
|
|
y = d[1];
|
|
} else {
|
|
x = d;
|
|
y = yData[i];
|
|
}
|
|
|
|
// Resolve low and high for range series
|
|
if (isRange) {
|
|
if (useRaw) {
|
|
y = d.slice(1, 3);
|
|
}
|
|
low = y[0];
|
|
y = y[1];
|
|
} else if (isStacked) {
|
|
x = d.x;
|
|
y = d.stackY;
|
|
low = y - d.y;
|
|
}
|
|
|
|
isNull = y === null;
|
|
|
|
// Optimize for scatter zooming
|
|
if (!requireSorting) {
|
|
isYInside = y >= yMin && y <= yMax;
|
|
}
|
|
|
|
if (!isNull && x >= xMin && x <= xMax && isYInside) {
|
|
|
|
// We use ceil to allow the KD tree to work with sub
|
|
// pixels, which can be used in boost to space pixels
|
|
clientX = Math.ceil(xAxis.toPixels(x, true));
|
|
|
|
if (sampling) {
|
|
if (minI === undefined || clientX === lastClientX) {
|
|
if (!isRange) {
|
|
low = y;
|
|
}
|
|
if (maxI === undefined || y > maxVal) {
|
|
maxVal = y;
|
|
maxI = i;
|
|
}
|
|
if (minI === undefined || low < minVal) {
|
|
minVal = low;
|
|
minI = i;
|
|
}
|
|
|
|
}
|
|
if (clientX !== lastClientX) { // Add points and reset
|
|
if (minI !== undefined) { // then maxI is also a number
|
|
plotY = yAxis.toPixels(maxVal, true);
|
|
yBottom = yAxis.toPixels(minVal, true);
|
|
|
|
addKDPoint(clientX, plotY, maxI);
|
|
if (yBottom !== plotY) {
|
|
addKDPoint(clientX, yBottom, minI);
|
|
}
|
|
}
|
|
|
|
minI = maxI = undefined;
|
|
lastClientX = clientX;
|
|
}
|
|
} else {
|
|
plotY = Math.ceil(yAxis.toPixels(y, true));
|
|
addKDPoint(clientX, plotY, i);
|
|
}
|
|
}
|
|
}
|
|
|
|
return !chartDestroyed;
|
|
}
|
|
|
|
function doneProcessing() {
|
|
fireEvent(series, 'renderedCanvas');
|
|
|
|
// Go back to prototype, ready to build
|
|
delete series.buildKDTree;
|
|
series.buildKDTree();
|
|
|
|
if (boostOptions.debug.timeKDTree) {
|
|
console.timeEnd('kd tree building'); // eslint-disable-line no-console
|
|
}
|
|
}
|
|
|
|
// Loop over the points to build the k-d tree - skip this if exporting
|
|
if (!chart.renderer.forExport) {
|
|
if (boostOptions.debug.timeKDTree) {
|
|
console.time('kd tree building'); // eslint-disable-line no-console
|
|
}
|
|
|
|
H.eachAsync(
|
|
isStacked ? series.data : (xData || rawData),
|
|
processPoint,
|
|
doneProcessing
|
|
);
|
|
}
|
|
}
|
|
});
|
|
|
|
/*
|
|
* We need to handle heatmaps separatly, since we can't perform the
|
|
* size/color calculations in the shader easily.
|
|
*
|
|
* This likely needs future optimization.
|
|
*
|
|
*/
|
|
each(['heatmap', 'treemap'],
|
|
function(t) {
|
|
if (seriesTypes[t]) {
|
|
wrap(seriesTypes[t].prototype, 'drawPoints', pointDrawHandler);
|
|
}
|
|
}
|
|
);
|
|
|
|
if (seriesTypes.bubble) {
|
|
// By default, the bubble series does not use the KD-tree, so force it
|
|
// to.
|
|
delete seriesTypes.bubble.prototype.buildKDTree;
|
|
// seriesTypes.bubble.prototype.directTouch = false;
|
|
|
|
// Needed for markers to work correctly
|
|
wrap(
|
|
seriesTypes.bubble.prototype,
|
|
'markerAttribs',
|
|
function(proceed) {
|
|
if (this.isSeriesBoosting) {
|
|
return false;
|
|
}
|
|
return proceed.apply(this, [].slice.call(arguments, 1));
|
|
}
|
|
);
|
|
}
|
|
|
|
seriesTypes.scatter.prototype.fill = true;
|
|
|
|
extend(seriesTypes.area.prototype, {
|
|
fill: true,
|
|
fillOpacity: true,
|
|
sampling: true
|
|
});
|
|
|
|
|
|
extend(seriesTypes.column.prototype, {
|
|
fill: true,
|
|
sampling: true
|
|
});
|
|
|
|
/**
|
|
* Take care of the canvas blitting
|
|
*/
|
|
H.Chart.prototype.callbacks.push(function(chart) {
|
|
|
|
/* Convert chart-level canvas to image */
|
|
function canvasToSVG() {
|
|
if (chart.ogl && chart.isChartSeriesBoosting()) {
|
|
chart.ogl.render(chart);
|
|
}
|
|
}
|
|
|
|
/* Clear chart-level canvas */
|
|
function preRender() {
|
|
// Reset force state
|
|
chart.boostForceChartBoost = undefined;
|
|
chart.boostForceChartBoost = shouldForceChartSeriesBoosting(chart);
|
|
chart.isBoosting = false;
|
|
|
|
if (!chart.isChartSeriesBoosting() && chart.didBoost) {
|
|
chart.didBoost = false;
|
|
}
|
|
|
|
// Clear the canvas
|
|
if (chart.boostClear) {
|
|
chart.boostClear();
|
|
}
|
|
|
|
if (chart.canvas && chart.ogl && chart.isChartSeriesBoosting()) {
|
|
chart.didBoost = true;
|
|
|
|
// Allocate
|
|
chart.ogl.allocateBuffer(chart);
|
|
}
|
|
|
|
// see #6518 + #6739
|
|
if (chart.markerGroup && chart.xAxis && chart.xAxis.length > 0 && chart.yAxis && chart.yAxis.length > 0) {
|
|
chart.markerGroup.translate(
|
|
chart.xAxis[0].pos,
|
|
chart.yAxis[0].pos
|
|
);
|
|
}
|
|
}
|
|
|
|
addEvent(chart, 'predraw', preRender);
|
|
addEvent(chart, 'render', canvasToSVG);
|
|
|
|
// addEvent(chart, 'zoom', function () {
|
|
// chart.boostForceChartBoost = shouldForceChartSeriesBoosting(chart);
|
|
// });
|
|
|
|
});
|
|
} // if hasCanvasSupport
|
|
|
|
}(Highcharts));
|
|
}));
|