基于Cesium实现加载显示热力图

目录

• CesiumHeatmap
• 编写案例

  // 测试热力图
  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,
      },
    });
  }