可以满足自定义绘制：线、多边形、矩形、圆;同时满足测距、测面积、三角测量的功能

如何使用

1、下载 cesium-measure-draw.js

2、在项目中导入

import CesiumMeasures from '../cesium-measure-draw.js';

3、实例

const measure = new CesiumMeasures(viewer)

1、绘制线:

    measure.drawLineMeasureGraphics({
            clampToGround: false, measure: true, style: {
                line: {
                    width: 2,
                    material: Cesium.Color.BLUE.withAlpha(0.8)
                },
                point: {
                    color: Cesium.Color.RED,
                    pixelSize: 5,
                    outlineColor: Cesium.Color.GREEN,
                    outlineWidth: 3
                }
            }, callback: (e) => {
                console.log(e, "88888888888");
            }
      })

2、绘制多边形

      measure.drawAreaMeasureGraphics({
          clampToGround: false, measure: true, style: {
              line: {
                  width: 2,
                  material: Cesium.Color.RED.withAlpha(0.8)
              },
              point: {
                  pixelSize: 5,
                  outlineColor: Cesium.Color.BLUE,
                  outlineWidth: 2,
                  show: true,//默认为true
              },
              polygon: {
                  material: Cesium.Color.GREEN.withAlpha(0.1)
              },
              //如果不设置centerPoint则会把测量的位置现在在最后一个点击的位置
              centerPoint: {
                  pixelSize: 5,
                  outlineColor: Cesium.Color.RED,
                  outlineWidth: 2
              }
          }, callback: (e) => {
              console.log(e, "88888888888");
          }
      })

3、绘制矩形

      measure.drawRectangleMeasureGraphics({
          clampToGround: false, measure: true, style: {
              line: {
                  
                  width: 2,
                  material: Cesium.Color.RED.withAlpha(0.8),
                  show: true,//默认为true
              },
              point: {
                  
                  pixelSize: 5,
                  outlineColor: Cesium.Color.BLUE,
                  outlineWidth: 1,
                  show: true,//默认为true
              },
              polygon: {
                  material: Cesium.Color.RED.withAlpha(0.1)
              },
              centerPoint: {
                  pixelSize: 5,
                  outlineColor: Cesium.Color.RED,
                  outlineWidth: 2,
                  show: true,//默认为true

              }
          }, callback: (e) => {
              console.log(e, "88888888888");
          }
      })

4、绘制圆形

      measure.drawCircleMeasureGraphics({
      clampToGround: false, measure: true, style: {
          line: {
              width: 2,//部分浏览器不起作用！！！无论多宽都是1，
              material: Cesium.Color.RED.withAlpha(0.8)
          },
          centerPoint: {
              show: true,
              pixelSize: 5,
              outlineColor: Cesium.Color.YELLOW,
              outlineWidth: 3,
              cololr: Cesium.Color.RED

          },
          circle: {
              material: Cesium.Color.GREEN.withAlpha(0.1),
              outlineColor: Cesium.Color.YELLOW,
              outlineWidth: 3,
          },

      }, callback: (e) => {
          console.log(e, "88888888888");
        }
      })

5、三角测量

      measure.drawTrianglesMeasureGraphics({
          style: {
              line: {
                  width: 2,
                  material: Cesium.Color.BLUE.withAlpha(0.8)
              },
              point: {
                  pixelSize: 5,
                  outlineColor: Cesium.Color.BLUE,
                  outlineWidth: 5,
                  show: true,//默认为true

              }
          },
          callback: () => { }
      })

6、 清空

      measure._drawLayer.entities.removeAll()