CZML Polyline【译】

原文链接及内容

原文链接：https://sandcastle.cesium.com/?src=CZML%20Polyline.html&label=All

实现效果：

示例代码如下：

const czml = [
  {
    id: "document",
    name: "CZML Geometries: Polyline",
    version: "1.0",
  },
  {
    id: "redLine",//贴地的红线
    name: "Red line clamped to terain",
    polyline: {
      positions: {
        cartographicDegrees: [-75, 35, 0, -125, 35, 0],
      },
      material: {
        solidColor: {
          color: {
            rgba: [255, 0, 0, 255],
          },
        },
      },
      width: 5,
      clampToGround: true,//贴地
    },
  },
  {
    id: "blueLine",//地表发光的蓝色线条，看着发白
    name: "Glowing blue line on the surface",
    polyline: {
      positions: {
        cartographicDegrees: [-75, 37, 0, -125, 37, 0],
      },
      material: {
        polylineGlow: {
          color: {
            rgba: [100, 149, 237, 255],
          },
          glowPower: 0.2,//发光强度，以占线宽百分比表示
          taperPower: 0.5,//锥化效果强度，以占总线长的百分比表示，当值为1.0或更高则不使用锥化效果
        },
      },
      width: 10,
    },
  },
  {
    id: "orangeLine",//橙色线条，黑色轮廓，高度一致，紧贴表面
    name: "Orange line with black outline at height and following the surface",
    polyline: {
      positions: {
        cartographicDegrees: [-75, 39, 250000, -125, 39, 250000],
      },
      material: {
        polylineOutline: {
          color: {
            rgba: [255, 165, 0, 255],
          },
          outlineColor: {
            rgba: [0, 0, 0, 255],
          },
          outlineWidth: 2,
        },
      },
      width: 5,
    },
  },
  {
    id: "purpleLine",
    name: "Purple arrow at height",//有一定高度的紫色箭头
    polyline: {
      positions: {
        cartographicDegrees: [-75, 43, 500000, -125, 43, 500000],
      },
      material: {
        polylineArrow: {
          color: {
            rgba: [148, 0, 211, 255],
          },
        },
      },
      arcType: "NONE",
      width: 10,
    },
  },
  {
    id: "dashedLine",
    name: "Blue dashed line",//蓝色虚线
    polyline: {
      positions: {
        cartographicDegrees: [-75, 45, 500000, -125, 45, 500000],
      },
      material: {
        polylineDash: {
          color: {
            rgba: [0, 255, 255, 255],
          },
        },
      },
      width: 4,
    },
  },
];

const viewer = new Cesium.Viewer("cesiumContainer");
const dataSourcePromise = Cesium.CzmlDataSource.load(czml);
viewer.dataSources.add(dataSourcePromise);
viewer.zoomTo(dataSourcePromise);