1443 lines
35 KiB
JavaScript
1443 lines
35 KiB
JavaScript
/**
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*
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* Copyright (c) 2019-2019 Highsoft AS
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*
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* Boost module: stripped-down renderer for higher performance
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*
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* License: highcharts.com/license
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*
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*/
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'use strict';
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import GLShader from './wgl-shader.js';
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import GLVertexBuffer from './wgl-vbuffer.js';
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import H from '../../parts/Globals.js';
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import '../../parts/Color.js';
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var win = H.win,
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doc = win.document,
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merge = H.merge,
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objEach = H.objEach,
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isNumber = H.isNumber,
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some = H.some,
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Color = H.Color,
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pick = H.pick;
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/**
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* Main renderer. Used to render series.
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*
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* Notes to self:
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* - May be able to build a point map by rendering to a separate canvas and
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* encoding values in the color data.
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* - Need to figure out a way to transform the data quicker
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*
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* @private
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* @function GLRenderer
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*
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* @param {Function} postRenderCallback
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*
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* @return {*}
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*/
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function GLRenderer(postRenderCallback) {
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var // Shader
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shader = false,
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// Vertex buffers - keyed on shader attribute name
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vbuffer = false,
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// Opengl context
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gl = false,
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// Width of our viewport in pixels
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width = 0,
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// Height of our viewport in pixels
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height = 0,
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// The data to render - array of coordinates
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data = false,
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// The marker data
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markerData = false,
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// Exports
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exports = {},
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// Is it inited?
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isInited = false,
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// The series stack
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series = [],
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// Texture handles
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textureHandles = {},
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// Things to draw as "rectangles" (i.e lines)
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asBar = {
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'column': true,
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'columnrange': true,
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'bar': true,
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'area': true,
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'arearange': true
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},
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asCircle = {
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'scatter': true,
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'bubble': true
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},
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// Render settings
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settings = {
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pointSize: 1,
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lineWidth: 1,
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fillColor: '#AA00AA',
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useAlpha: true,
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usePreallocated: false,
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useGPUTranslations: false,
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debug: {
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timeRendering: false,
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timeSeriesProcessing: false,
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timeSetup: false,
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timeBufferCopy: false,
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timeKDTree: false,
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showSkipSummary: false
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}
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};
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// /////////////////////////////////////////////////////////////////////////
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function setOptions(options) {
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merge(true, settings, options);
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}
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function seriesPointCount(series) {
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var isStacked,
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xData,
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s;
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if (series.isSeriesBoosting) {
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isStacked = !!series.options.stacking;
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xData = (
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series.xData ||
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series.options.xData ||
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series.processedXData
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);
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s = (isStacked ? series.data : (xData || series.options.data))
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.length;
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if (series.type === 'treemap') {
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s *= 12;
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} else if (series.type === 'heatmap') {
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s *= 6;
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} else if (asBar[series.type]) {
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s *= 2;
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}
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return s;
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}
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return 0;
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}
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/* Allocate a float buffer to fit all series */
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function allocateBuffer(chart) {
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var s = 0;
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if (!settings.usePreallocated) {
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return;
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}
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chart.series.forEach(function (series) {
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if (series.isSeriesBoosting) {
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s += seriesPointCount(series);
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}
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});
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vbuffer.allocate(s);
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}
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function allocateBufferForSingleSeries(series) {
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var s = 0;
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if (!settings.usePreallocated) {
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return;
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}
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if (series.isSeriesBoosting) {
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s = seriesPointCount(series);
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}
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vbuffer.allocate(s);
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}
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/*
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* Returns an orthographic perspective matrix
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* @param {number} width - the width of the viewport in pixels
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* @param {number} height - the height of the viewport in pixels
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*/
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function orthoMatrix(width, height) {
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var near = 0,
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far = 1;
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return [
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2 / width, 0, 0, 0,
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0, -(2 / height), 0, 0,
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0, 0, -2 / (far - near), 0,
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-1, 1, -(far + near) / (far - near), 1
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];
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}
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/*
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* Clear the depth and color buffer
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*/
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function clear() {
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gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
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}
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/*
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* Get the WebGL context
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* @returns {WebGLContext} - the context
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*/
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function getGL() {
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return gl;
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}
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/*
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* Push data for a single series
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* This calculates additional vertices and transforms the data to be
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* aligned correctly in memory
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*/
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function pushSeriesData(series, inst) {
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var isRange = series.pointArrayMap &&
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series.pointArrayMap.join(',') === 'low,high',
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chart = series.chart,
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options = series.options,
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isStacked = !!options.stacking,
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rawData = options.data,
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xExtremes = series.xAxis.getExtremes(),
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xMin = xExtremes.min,
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xMax = xExtremes.max,
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yExtremes = series.yAxis.getExtremes(),
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yMin = yExtremes.min,
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yMax = yExtremes.max,
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xData = series.xData || options.xData || series.processedXData,
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yData = series.yData || options.yData || series.processedYData,
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zData = series.zData || options.zData || series.processedZData,
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yAxis = series.yAxis,
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xAxis = series.xAxis,
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// plotHeight = series.chart.plotHeight,
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plotWidth = series.chart.plotWidth,
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useRaw = !xData || xData.length === 0,
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// threshold = options.threshold,
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// yBottom = chart.yAxis[0].getThreshold(threshold),
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// hasThreshold = isNumber(threshold),
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// colorByPoint = series.options.colorByPoint,
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// This is required for color by point, so make sure this is
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// uncommented if enabling that
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// colorIndex = 0,
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// Required for color axis support
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// caxis,
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connectNulls = options.connectNulls,
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// For some reason eslint doesn't pick up that this is actually used
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maxVal, // eslint-disable-line no-unused-vars
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points = series.points || false,
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lastX = false,
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lastY = false,
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minVal,
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color,
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scolor,
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sdata = isStacked ? series.data : (xData || rawData),
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closestLeft = { x: Number.MAX_VALUE, y: 0 },
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closestRight = { x: -Number.MAX_VALUE, y: 0 },
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skipped = 0,
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hadPoints = false,
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cullXThreshold = 1,
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cullYThreshold = 1,
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// The following are used in the builder while loop
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x,
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y,
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d,
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z,
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i = -1,
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px = false,
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nx = false,
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// This is in fact used.
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low, // eslint-disable-line no-unused-vars
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chartDestroyed = typeof chart.index === 'undefined',
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nextInside = false,
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prevInside = false,
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pcolor = false,
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drawAsBar = asBar[series.type],
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isXInside = false,
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isYInside = true,
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firstPoint = true,
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zones = options.zones || false,
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zoneDefColor = false,
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threshold = options.threshold;
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if (options.boostData && options.boostData.length > 0) {
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return;
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}
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if (zones) {
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some(zones, function (zone) {
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if (typeof zone.value === 'undefined') {
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zoneDefColor = H.Color(zone.color); // eslint-disable-line new-cap
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return true;
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}
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});
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if (!zoneDefColor) {
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zoneDefColor = (series.pointAttribs &&
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series.pointAttribs().fill) || series.color;
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zoneDefColor = H.Color(zoneDefColor); // eslint-disable-line new-cap
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}
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}
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if (chart.inverted) {
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// plotHeight = series.chart.plotWidth;
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plotWidth = series.chart.plotHeight;
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}
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series.closestPointRangePx = Number.MAX_VALUE;
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// Push color to color buffer - need to do this per. vertex
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function pushColor(color) {
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if (color) {
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inst.colorData.push(color[0]);
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inst.colorData.push(color[1]);
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inst.colorData.push(color[2]);
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inst.colorData.push(color[3]);
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}
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}
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// Push a vertice to the data buffer
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function vertice(x, y, checkTreshold, pointSize, color) {
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pushColor(color);
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if (settings.usePreallocated) {
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vbuffer.push(x, y, checkTreshold ? 1 : 0, pointSize || 1);
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} else {
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data.push(x);
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data.push(y);
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data.push(checkTreshold ? 1 : 0);
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data.push(pointSize || 1);
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}
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}
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function closeSegment() {
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if (inst.segments.length) {
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inst.segments[inst.segments.length - 1].to = data.length;
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}
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}
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// Create a new segment for the current set
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function beginSegment() {
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// Insert a segment on the series.
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// A segment is just a start indice.
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// When adding a segment, if one exists from before, it should
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// set the previous segment's end
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if (inst.segments.length &&
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inst.segments[inst.segments.length - 1].from === data.length
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) {
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return;
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}
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closeSegment();
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inst.segments.push({
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from: data.length
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});
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}
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// Push a rectangle to the data buffer
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function pushRect(x, y, w, h, color) {
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pushColor(color);
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vertice(x + w, y);
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pushColor(color);
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vertice(x, y);
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pushColor(color);
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vertice(x, y + h);
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pushColor(color);
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vertice(x, y + h);
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pushColor(color);
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vertice(x + w, y + h);
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pushColor(color);
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vertice(x + w, y);
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}
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// Create the first segment
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beginSegment();
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// Special case for point shapes
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if (points && points.length > 0) {
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// If we're doing points, we assume that the points are already
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// translated, so we skip the shader translation.
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inst.skipTranslation = true;
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// Force triangle draw mode
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inst.drawMode = 'triangles';
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// We don't have a z component in the shader, so we need to sort.
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if (points[0].node && points[0].node.levelDynamic) {
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points.sort(function (a, b) {
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if (a.node) {
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if (a.node.levelDynamic > b.node.levelDynamic) {
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return 1;
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}
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if (a.node.levelDynamic < b.node.levelDynamic) {
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return -1;
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}
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}
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return 0;
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});
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}
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points.forEach(function (point) {
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var plotY = point.plotY,
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shapeArgs,
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swidth,
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pointAttr;
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if (
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typeof plotY !== 'undefined' &&
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!isNaN(plotY) &&
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point.y !== null
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) {
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shapeArgs = point.shapeArgs;
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pointAttr = chart.styledMode ?
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point.series.colorAttribs(point) :
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pointAttr = point.series.pointAttribs(point);
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swidth = pointAttr['stroke-width'] || 0;
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// Handle point colors
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color = H.color(pointAttr.fill).rgba;
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color[0] /= 255.0;
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color[1] /= 255.0;
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color[2] /= 255.0;
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// So there are two ways of doing this. Either we can
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// create a rectangle of two triangles, or we can do a
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// point and use point size. Latter is faster, but
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// only supports squares. So we're doing triangles.
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// We could also use one color per. vertice to get
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// better color interpolation.
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// If there's stroking, we do an additional rect
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if (series.type === 'treemap') {
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swidth = swidth || 1;
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scolor = H.color(pointAttr.stroke).rgba;
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scolor[0] /= 255.0;
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scolor[1] /= 255.0;
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scolor[2] /= 255.0;
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pushRect(
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shapeArgs.x,
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shapeArgs.y,
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shapeArgs.width,
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shapeArgs.height,
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scolor
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);
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swidth /= 2;
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}
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// } else {
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// swidth = 0;
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// }
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// Fixes issues with inverted heatmaps (see #6981)
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// The root cause is that the coordinate system is flipped.
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// In other words, instead of [0,0] being top-left, it's
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// bottom-right. This causes a vertical and horizontal flip
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// in the resulting image, making it rotated 180 degrees.
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if (series.type === 'heatmap' && chart.inverted) {
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shapeArgs.x = xAxis.len - shapeArgs.x;
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shapeArgs.y = yAxis.len - shapeArgs.y;
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shapeArgs.width = -shapeArgs.width;
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shapeArgs.height = -shapeArgs.height;
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}
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pushRect(
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shapeArgs.x + swidth,
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shapeArgs.y + swidth,
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shapeArgs.width - (swidth * 2),
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shapeArgs.height - (swidth * 2),
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color
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);
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}
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});
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closeSegment();
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return;
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}
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// Extract color axis
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// (chart.axes || []).forEach(function (a) {
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// if (H.ColorAxis && a instanceof H.ColorAxis) {
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// caxis = a;
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// }
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// });
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while (i < sdata.length - 1) {
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d = sdata[++i];
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// px = x = y = z = nx = low = false;
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// chartDestroyed = typeof chart.index === 'undefined';
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// nextInside = prevInside = pcolor = isXInside = isYInside = false;
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// drawAsBar = asBar[series.type];
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if (chartDestroyed) {
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break;
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}
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// Uncomment this to enable color by point.
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// This currently left disabled as the charts look really ugly
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// when enabled and there's a lot of points.
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// Leaving in for the future (tm).
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// if (colorByPoint) {
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// colorIndex = ++colorIndex %
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// series.chart.options.colors.length;
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// pcolor = toRGBAFast(series.chart.options.colors[colorIndex]);
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// pcolor[0] /= 255.0;
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// pcolor[1] /= 255.0;
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// pcolor[2] /= 255.0;
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// }
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if (useRaw) {
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x = d[0];
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y = d[1];
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if (sdata[i + 1]) {
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nx = sdata[i + 1][0];
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}
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if (sdata[i - 1]) {
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px = sdata[i - 1][0];
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}
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if (d.length >= 3) {
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z = d[2];
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if (d[2] > inst.zMax) {
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inst.zMax = d[2];
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}
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if (d[2] < inst.zMin) {
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inst.zMin = d[2];
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}
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}
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} else {
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x = d;
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y = yData[i];
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if (sdata[i + 1]) {
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nx = sdata[i + 1];
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}
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if (sdata[i - 1]) {
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px = sdata[i - 1];
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}
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if (zData && zData.length) {
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z = zData[i];
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if (zData[i] > inst.zMax) {
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inst.zMax = zData[i];
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}
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if (zData[i] < inst.zMin) {
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inst.zMin = zData[i];
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}
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}
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}
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if (!connectNulls && (x === null || y === null)) {
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beginSegment();
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continue;
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}
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if (nx && nx >= xMin && nx <= xMax) {
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nextInside = true;
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}
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if (px && px >= xMin && px <= xMax) {
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prevInside = true;
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}
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if (isRange) {
|
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if (useRaw) {
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y = d.slice(1, 3);
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}
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low = y[0];
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y = y[1];
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} else if (isStacked) {
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x = d.x;
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y = d.stackY;
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low = y - d.y;
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}
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|
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if (yMin !== null &&
|
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typeof yMin !== 'undefined' &&
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yMax !== null &&
|
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typeof yMax !== 'undefined'
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) {
|
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isYInside = y >= yMin && y <= yMax;
|
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}
|
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|
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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 === null && connectNulls) {
|
|
continue;
|
|
}
|
|
|
|
// Cull points outside the extremes
|
|
if (y === null || (!isYInside && !nextInside && !prevInside)) {
|
|
beginSegment();
|
|
continue;
|
|
}
|
|
|
|
// The first point before and first after extremes should be
|
|
// rendered (#9962)
|
|
if (
|
|
(nx >= xMin || x >= xMin) &&
|
|
(px <= xMax || x <= xMax)
|
|
) {
|
|
isXInside = true;
|
|
}
|
|
|
|
if (!isXInside && !nextInside && !prevInside) {
|
|
continue;
|
|
}
|
|
|
|
// Note: Boost requires that zones are sorted!
|
|
if (zones) {
|
|
pcolor = zoneDefColor.rgba;
|
|
some(zones, function (zone, i) { // eslint-disable-line no-loop-func
|
|
var last = zones[i - 1];
|
|
|
|
if (typeof zone.value !== 'undefined' && y <= zone.value) {
|
|
if (!last || y >= last.value) {
|
|
pcolor = H.color(zone.color).rgba;
|
|
|
|
}
|
|
|
|
return true;
|
|
}
|
|
});
|
|
|
|
pcolor[0] /= 255.0;
|
|
pcolor[1] /= 255.0;
|
|
pcolor[2] /= 255.0;
|
|
|
|
}
|
|
|
|
// 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. Update: this is no longer required as far as I
|
|
// can tell. Leaving in for git blame in case there are edge
|
|
// cases I've not found. Having this in breaks #10246.
|
|
|
|
// if (y > plotHeight) {
|
|
// y = plotHeight;
|
|
// }
|
|
|
|
if (x > plotWidth) {
|
|
// If this is rendered as a point, just skip drawing it
|
|
// entirely, as we're not dependandt on lineTo'ing to it.
|
|
// See #8197
|
|
if (inst.drawMode === 'points') {
|
|
continue;
|
|
}
|
|
|
|
// Having this here will clamp markers and make the angle
|
|
// of the last line wrong. See 9166.
|
|
// x = plotWidth;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (drawAsBar) {
|
|
|
|
maxVal = y;
|
|
minVal = low;
|
|
|
|
if (low === false || typeof low === 'undefined') {
|
|
if (y < 0) {
|
|
minVal = y;
|
|
} else {
|
|
minVal = 0;
|
|
}
|
|
}
|
|
|
|
if (!isRange && !isStacked) {
|
|
minVal = Math.max(
|
|
threshold === null ? yMin : threshold, // #5268
|
|
yMin
|
|
); // #8731
|
|
}
|
|
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 && Math.abs(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 && !firstPoint) {
|
|
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;
|
|
|
|
hadPoints = true;
|
|
firstPoint = false;
|
|
}
|
|
|
|
if (settings.debug.showSkipSummary) {
|
|
console.log('skipped points:', skipped); // eslint-disable-line no-console
|
|
}
|
|
|
|
function pushSupplementPoint(point, atStart) {
|
|
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.
|
|
|
|
if (atStart) {
|
|
data = [point.x, point.y, 0, 2].concat(data);
|
|
return;
|
|
}
|
|
|
|
vertice(
|
|
point.x,
|
|
point.y,
|
|
0,
|
|
2
|
|
);
|
|
}
|
|
|
|
if (
|
|
!hadPoints &&
|
|
connectNulls !== false &&
|
|
series.drawMode === 'line_strip'
|
|
) {
|
|
if (closestLeft.x < Number.MAX_VALUE) {
|
|
// We actually need to push this *before* the complete buffer.
|
|
pushSupplementPoint(closestLeft, true);
|
|
}
|
|
|
|
if (closestRight.x > -Number.MAX_VALUE) {
|
|
pushSupplementPoint(closestRight);
|
|
}
|
|
}
|
|
|
|
closeSegment();
|
|
}
|
|
|
|
/*
|
|
* 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({
|
|
segments: [],
|
|
// 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,
|
|
showMarkers: true,
|
|
drawMode: ({
|
|
'area': 'lines',
|
|
'arearange': 'lines',
|
|
'areaspline': 'line_strip',
|
|
'column': 'lines',
|
|
'columnrange': '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);
|
|
shader.setUniform('xAxisIsLog', axis.isLog);
|
|
shader.setUniform('xAxisReversed', !!axis.reversed);
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
shader.setUniform('yAxisIsLog', axis.isLog);
|
|
shader.setUniform('yAxisReversed', !!axis.reversed);
|
|
}
|
|
|
|
/*
|
|
* 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 || !shader) {
|
|
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));
|
|
|
|
if (settings.lineWidth > 1 && !H.isMS) {
|
|
gl.lineWidth(settings.lineWidth);
|
|
}
|
|
|
|
vbuffer.build(exports.data, 'aVertexPosition', 4);
|
|
vbuffer.bind();
|
|
|
|
shader.setInverted(chart.inverted);
|
|
|
|
// Render the series
|
|
series.forEach(function (s, si) {
|
|
var options = s.series.options,
|
|
shapeOptions = options.marker,
|
|
sindex,
|
|
lineWidth = typeof options.lineWidth !== 'undefined' ?
|
|
options.lineWidth :
|
|
1,
|
|
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,
|
|
shapeTexture = textureHandles[
|
|
(shapeOptions && shapeOptions.symbol) || s.series.symbol
|
|
] || textureHandles.circle,
|
|
color;
|
|
|
|
if (
|
|
s.segments.length === 0 ||
|
|
(s.segmentslength && s.segments[0].from === s.segments[0].to)
|
|
) {
|
|
return;
|
|
}
|
|
|
|
if (shapeTexture.isReady) {
|
|
gl.bindTexture(gl.TEXTURE_2D, shapeTexture.handle);
|
|
shader.setTexture(shapeTexture.handle);
|
|
}
|
|
|
|
if (chart.styledMode) {
|
|
fillColor = (
|
|
s.series.markerGroup &&
|
|
s.series.markerGroup.getStyle('fill')
|
|
);
|
|
|
|
} else {
|
|
fillColor =
|
|
(s.series.pointAttribs && s.series.pointAttribs().fill) ||
|
|
s.series.color;
|
|
|
|
if (options.colorByPoint) {
|
|
fillColor = s.series.chart.options.colors[si];
|
|
}
|
|
}
|
|
|
|
if (s.series.fillOpacity && options.fillOpacity) {
|
|
fillColor = new Color(fillColor).setOpacity(
|
|
pick(options.fillOpacity, 1.0)
|
|
).get();
|
|
}
|
|
|
|
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' ||
|
|
options.boostBlending === 'multiply'
|
|
) {
|
|
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.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] || false
|
|
);
|
|
|
|
// Do the actual rendering
|
|
// If the line width is < 0, skip rendering of the lines. See #7833.
|
|
if (lineWidth > 0 || s.drawMode !== 'line_strip') {
|
|
for (sindex = 0; sindex < s.segments.length; sindex++) {
|
|
// if (s.segments[sindex].from < s.segments[sindex].to) {
|
|
vbuffer.render(
|
|
s.segments[sindex].from,
|
|
s.segments[sindex].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);
|
|
for (sindex = 0; sindex < s.segments.length; sindex++) {
|
|
// if (s.segments[sindex].from < s.segments[sindex].to) {
|
|
vbuffer.render(
|
|
s.segments[sindex].from,
|
|
s.segments[sindex].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, or if we have no valid shader
|
|
if ((width === w && height === h) || !shader) {
|
|
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
|
|
|
|
if (!shader) {
|
|
// We need to abort, there's no shader context
|
|
return false;
|
|
}
|
|
|
|
vbuffer = GLVertexBuffer(gl, shader); // eslint-disable-line new-cap
|
|
|
|
function createTexture(name, fn) {
|
|
var props = {
|
|
isReady: false,
|
|
texture: doc.createElement('canvas'),
|
|
handle: gl.createTexture()
|
|
},
|
|
ctx = props.texture.getContext('2d');
|
|
|
|
textureHandles[name] = props;
|
|
|
|
props.texture.width = 512;
|
|
props.texture.height = 512;
|
|
|
|
ctx.mozImageSmoothingEnabled = false;
|
|
ctx.webkitImageSmoothingEnabled = false;
|
|
ctx.msImageSmoothingEnabled = false;
|
|
ctx.imageSmoothingEnabled = false;
|
|
|
|
ctx.strokeStyle = 'rgba(255, 255, 255, 0)';
|
|
ctx.fillStyle = '#FFF';
|
|
|
|
fn(ctx);
|
|
|
|
try {
|
|
|
|
gl.activeTexture(gl.TEXTURE0);
|
|
gl.bindTexture(gl.TEXTURE_2D, props.handle);
|
|
// gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, true);
|
|
|
|
gl.texImage2D(
|
|
gl.TEXTURE_2D,
|
|
0,
|
|
gl.RGBA,
|
|
gl.RGBA,
|
|
gl.UNSIGNED_BYTE,
|
|
props.texture
|
|
);
|
|
|
|
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);
|
|
|
|
props.isReady = true;
|
|
} catch (e) {}
|
|
}
|
|
|
|
// Circle shape
|
|
createTexture('circle', function (ctx) {
|
|
ctx.beginPath();
|
|
ctx.arc(256, 256, 256, 0, 2 * Math.PI);
|
|
ctx.stroke();
|
|
ctx.fill();
|
|
});
|
|
|
|
// Square shape
|
|
createTexture('square', function (ctx) {
|
|
ctx.fillRect(0, 0, 512, 512);
|
|
});
|
|
|
|
// Diamond shape
|
|
createTexture('diamond', function (ctx) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(256, 0);
|
|
ctx.lineTo(512, 256);
|
|
ctx.lineTo(256, 512);
|
|
ctx.lineTo(0, 256);
|
|
ctx.lineTo(256, 0);
|
|
ctx.fill();
|
|
});
|
|
|
|
// Triangle shape
|
|
createTexture('triangle', function (ctx) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(0, 512);
|
|
ctx.lineTo(256, 0);
|
|
ctx.lineTo(512, 512);
|
|
ctx.lineTo(0, 512);
|
|
ctx.fill();
|
|
});
|
|
|
|
// Triangle shape (rotated)
|
|
createTexture('triangle-down', function (ctx) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(0, 0);
|
|
ctx.lineTo(256, 512);
|
|
ctx.lineTo(512, 0);
|
|
ctx.lineTo(0, 0);
|
|
ctx.fill();
|
|
});
|
|
|
|
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) {
|
|
|
|
objEach(textureHandles, function (key) {
|
|
if (textureHandles[key].handle) {
|
|
gl.deleteTexture(textureHandles[key].handle);
|
|
}
|
|
});
|
|
|
|
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;
|
|
}
|
|
|
|
export default GLRenderer;
|