多边形顶部

在cesium中，只是为了简单显示，用Entity画一个多边形的顶部：

const DrawTop = () => {
  const graphic1 = new mars3d.graphic.PolygonEntity({
    positions: [
      [106.4770141458, 29.4926427256324, 330],
      [106.477014147859, 29.4925717567329, 330],
      [106.476739448287, 29.4925720912176, 330],
      [106.476739445011, 29.4926430592064, 330],
      [106.4770141458, 29.4926427256324, 330],
      [106.4770141458, 29.4926427256324, 330]
    ],
    style: {
      color: "red"
    },
    attr: { remark: "示例2" }
  })

  flyLineGraphicLayer.addGraphic(graphic1)
}

用多个Entity画多面体的各个面：

const DrawPolygon = () => {
  const graphic1 = new mars3d.graphic.PolygonEntity({
    positions: [
      [116.3786111111111, 40.00222222222222, 30.655407652258873],
      [116.3786111111111, 40.002361111111114, 30.655407652258873],
      [116.37874999999998, 40.002361111111114, 30.655407652258873],
      [116.37874999999998, 40.00222222222222, 30.655407652258873],
      [116.3786111111111, 40.00222222222222, 30.655407652258873]
    ],
    style: {
      color: "red"
    },
    attr: { remark: "示例2" }
  })

  const graphic2 = new mars3d.graphic.PolygonEntity({ 
    positions: [
      [116.3786111111111, 40.00222222222222, 45.983166730962694], 
      [116.37874999999998, 40.00222222222222, 45.983166730962694], 
      [116.37874999999998, 40.002361111111114, 45.983166730962694], 
      [116.3786111111111, 40.002361111111114, 45.983166730962694], 
      [116.3786111111111, 40.00222222222222, 45.983166730962694]
    ],
    style: {
      color: "red"
    },
    attr: { remark: "示例2" }
  })

  const graphic3 = new mars3d.graphic.PolygonEntity({ 
    positions: [
      [116.3786111111111, 40.00222222222222, 30.655407652258873], 
      [116.3786111111111, 40.00222222222222, 45.983166730962694], 
      [116.3786111111111, 40.002361111111114, 45.983166730962694],  
      [116.3786111111111, 40.002361111111114, 30.655407652258873], 
      [116.3786111111111, 40.00222222222222, 30.655407652258873]
    ],
    style: {
      color: "red"
    },
    attr: { remark: "示例2" }
  })

  const graphic4 = new mars3d.graphic.PolygonEntity({ 
    positions: [
      [116.37874999999998, 40.00222222222222, 30.655407652258873], 
      [116.37874999999998, 40.002361111111114, 30.655407652258873], 
      [116.37874999999998, 40.002361111111114, 45.983166730962694], 
      [116.37874999999998, 40.00222222222222, 45.983166730962694], 
      [116.37874999999998, 40.00222222222222, 30.655407652258873]
    ],
    style: {
      color: "red"
    },
    attr: { remark: "示例2" }
  })

  const graphic5 = new mars3d.graphic.PolygonEntity({ 
    positions: [
      [116.3786111111111, 40.00222222222222, 30.655407652258873],
      [116.37874999999998, 40.00222222222222, 30.655407652258873],
      [116.37874999999998, 40.00222222222222, 45.983166730962694],
      [116.3786111111111, 40.00222222222222, 45.983166730962694],
      [116.3786111111111, 40.00222222222222, 30.655407652258873]
    ],
    style: {
      color: "red"
    },
    attr: { remark: "示例2" }
  })

  const graphic6 = new mars3d.graphic.PolygonEntity({ 
    positions: [
      [
        [116.3786111111111, 40.002361111111114, 30.655407652258873],
        [116.3786111111111, 40.002361111111114, 45.983166730962694],
        [116.37874999999998, 40.002361111111114, 45.983166730962694],
        [116.37874999999998, 40.002361111111114, 30.655407652258873],
        [116.3786111111111, 40.002361111111114, 30.655407652258873]
      ]
    ],
    style: {
      color: "green"
    },
    attr: { remark: "示例2" }
  })

  flyLineGraphicLayer.addGraphic(graphic1)
  flyLineGraphicLayer.addGraphic(graphic2)
  flyLineGraphicLayer.addGraphic(graphic3)
  flyLineGraphicLayer.addGraphic(graphic4)
  flyLineGraphicLayer.addGraphic(graphic5)
  flyLineGraphicLayer.addGraphic(graphic6)
}