| |
| <!-- |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| --> |
| |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <script src="lib/simpleRequire.js"></script> |
| <script src="lib/config.js"></script> |
| <script src="lib/perlin.js"></script> |
| <meta name="viewport" content="width=device-width, initial-scale=1" /> |
| </head> |
| <body> |
| <style> |
| html, body, #main { |
| width: 100%; |
| height: 100%; |
| margin: 0; |
| } |
| </style> |
| <div id="main"></div> |
| <script> |
| // gap usually appears when dpr is not an integer |
| Object.defineProperty(window, 'devicePixelRatio', { |
| value: 2.5, |
| writable: false |
| }); |
| require([ |
| 'echarts' |
| ], function (echarts) { |
| |
| var chart = echarts.init(document.getElementById('main')); |
| |
| // function normalDist(theta, x) { |
| // return 1 / (theta * Math.sqrt(2 * Math.PI)) * Math.exp(- x * x / 2 / theta / theta); |
| // } |
| |
| var xData = []; |
| var yData = []; |
| noise.seed(Math.random()); |
| function generateData(theta, min, max) { |
| var data = []; |
| for (var i = 0; i <= 300; i++) { |
| for (var j = 0; j <= 300; j++) { |
| // var x = (max - min) * i / 200 + min; |
| // var y = (max - min) * j / 100 + min; |
| data.push([i, j, noise.perlin2(i / 40, j / 20) + 0.5]); |
| // data.push([i, j, normalDist(theta, x) * normalDist(theta, y)]); |
| } |
| yData.push(i); |
| xData.push(i); |
| } |
| return data; |
| } |
| var data = generateData(2, -5, 5); |
| |
| // console.profile('render'); |
| console.time('render'); |
| chart.setOption({ |
| tooltip: {}, |
| xAxis: { |
| type: 'category', |
| data: xData |
| }, |
| yAxis: { |
| type: 'category', |
| data: yData |
| }, |
| visualMap: { |
| // type: 'piecewise', |
| min: 0, |
| max: 1, |
| calculable: true, |
| splitNumber: 8, |
| inRange: { |
| color: ['#313695', '#4575b4', '#74add1', '#abd9e9', '#e0f3f8', '#ffffbf', '#fee090', '#fdae61', '#f46d43', '#d73027', '#a50026'] |
| } |
| }, |
| series: [{ |
| name: 'Gaussian', |
| type: 'heatmap', |
| data: data, |
| itemStyle: { |
| emphasis: { |
| borderColor: '#333', |
| borderWidth: 2 |
| } |
| }, |
| progressive: 1000, |
| // silent: true, |
| // progressive: 0, |
| // progressiveThreshold: 30000, |
| animation: false |
| }] |
| }); |
| console.timeEnd('render'); |
| // console.profileEnd('render'); |
| }); |
| |
| </script> |
| </body> |
| </html> |
