Cesium loading display thermal diagram

Cesium Load and display the heat map

I'm a little white , So far, for 3D I don't know anything about , So , about cesium It is not particularly good to use , Not at all , So we are also groping bit by bit , In the process of learning bit by bit , So some blog posts may not be accurate , Just to record the learning process , Wrong don't spray me ！！

CesiumHeatmap

First of all , A tool is needed to draw a heat map , Is the use of CesiumHeatmap This tool , so what , Here is one of his github The address of .

CesiumHeatmap 【 Time and space gate ~ sou ~】

Just download it and put it in the project .

I put him in here .

Then introduce it into the project .

<script src="./CesiumHeatmap/CesiumHeatmap.js"></script>

Write a case

  //  Test thermodynamic diagram 
  function addHeatMap() {
    
    let bounds = {
    
      west: 106.243911,
      east: 106.270811,
      south: 29.244545,
      north: 29.289995,
    };
    let heatMap = CesiumHeatmap.create(
      viewer, // your cesium viewer
      bounds, // bounds for heatmap layer
      {
    
        // heatmap.js options go here
        // maxOpacity: 0.3
        gradient: {
                       // the gradient used if not given in the heatmap options object
					'.3': '#d9e7fc',
					'.65': '#2a7aed',
					'.8': '#fbd801',
					'.95': '#18c3a1'
				},
      },
    );
    let data = [
      {
     x: 106.254153, y: 29.2883939, value: 76 },
      {
     x: 106.2654284, y: 29.2854935, value: 63 },
      {
     x: 106.265005, y: 29.284573, value: 1 },
      {
     x: 106.264001, y: 29.283456, value: 21 },
      {
     x: 106.263219, y: 29.282181, value: 28 },
      {
     x: 106.262788, y: 29.279673, value: 41 },
      {
     x: 106.2632087, y: 29.2742665, value: 75 },
      {
     x: 106.2505158, y: 29.28138, value: 76 },
      {
     x: 106.2531094, y: 29.2833591, value: 100 },
      {
     x: 106.2531093, y: 29.2844560, value: 80 },
      {
     x: 106.253293, y: 29.284826, value: 1 },
      {
     x: 106.250099, y: 29.285638, value: 21 },
      {
     x: 106.2469149, y: 29.2864109, value: 28 },
      {
     x: 106.254119, y: 29.276274, value: 41 },
    ];
    let valueMin = 0;
    let valueMax = 50;
    heatMap.setWGS84Data(valueMin, valueMax, data);
    viewer.camera.flyTo({
    
      destination: Cesium.Cartesian3.fromDegrees(106.254153, 29.2742665, 2e3),
      orientation: {
    
        heading: Cesium.Math.toRadians(0.0),
        pitch: Cesium.Math.toRadians(-90.0),
        roll: 0.0,
      },
    });
  }

The effect is like this .