# PlaneGeometry、 PlaneOutlineGeometry

  • vc-geometry-plane 组件用于加载平面几何体。
  • vc-geometry-outline-plane 组件用于加载平面几何体轮廓。
  • 需要作为 vc-instance-geometry 的子组件使用，可以挂载到 vc-primitive。

# 示例

# 加载平面几何体

# 预览

收起 
  <template>
    <div class="viewer">
      <vc-viewer @ready="ready" @LEFT_CLICK="LEFT_CLICK">
        <vc-primitive :appearance="appearance">
          <vc-instance-geometry :geometry.sync="geometry" :attributes="attributes" :modelMatrix="modelMatrix">
            <vc-geometry-plane ref="plane" :vertexFormat="vertexFormat"></vc-geometry-plane>
          </vc-instance-geometry>
        </vc-primitive>
        <vc-primitive :appearance="appearanceOutline">
          <vc-instance-geometry :attributes="attributesOutline" :modelMatrix="modelMatrix">
            <vc-geometry-outline-plane ref="planeOutline"></vc-geometry-outline-plane>
          </vc-instance-geometry>
        </vc-primitive>
      </vc-viewer>
    </div>
  </template>

  <script>
    export default {
      data() {
        return {
          appearance: null,
          appearanceOutline: null,
          geometry: null,
          attributes: null,
          vertexFormat: null,
          modelMatrix: null,
          attributesOutline: null
        }
      },
      mounted() {
        Promise.all([this.$refs.plane.createPromise, this.$refs.planeOutline.createPromise]).then((instances) => {
          console.log('All geometries are loaded.')
          const boundingSphereUnion = instances.reduce((prev, cur) => {
            const geometry = cur.cesiumObject.constructor.createGeometry(cur.cesiumObject)
            const boundingSphere = cur.vm.$parent.modelMatrix
              ? Cesium.BoundingSphere.transform(geometry.boundingSphere, cur.vm.$parent.modelMatrix)
              : geometry.boundingSphere
            return prev === null ? boundingSphere : Cesium.BoundingSphere.union(prev, boundingSphere)
          }, null)
          instances[0].viewer.scene.camera.flyToBoundingSphere(boundingSphereUnion)
        })
      },
      methods: {
        ready({ Cesium, viewer }) {
          this.viewer = viewer
          const { PerInstanceColorAppearance, Cartesian3, ColorGeometryInstanceAttribute, Matrix4, Transforms } = Cesium
          this.appearance = new PerInstanceColorAppearance({
            closed: true
          })
          this.appearanceOutline = new PerInstanceColorAppearance({
            flat: true,
            renderState: {
              lineWidth: Math.min(2.0, viewer.scene.maximumAliasedLineWidth)
            }
          })
          this.attributes = {
            color: new ColorGeometryInstanceAttribute(Math.random(), Math.random(), Math.random(), 0.5)
          }
          this.attributesOutline = {
            color: new ColorGeometryInstanceAttribute(Math.random(), Math.random(), Math.random())
          }
          this.vertexFormat = PerInstanceColorAppearance.VERTEX_FORMAT
          const dimensions = new Cartesian3(400000.0, 300000.0, 1.0)
          const translateMatrix = Transforms.eastNorthUpToFixedFrame(Cartesian3.fromDegrees(108, 38))
          const scaleMatrix = Matrix4.fromScale(dimensions)
          const planeModelMatrix = new Matrix4()
          this.modelMatrix = Matrix4.multiply(translateMatrix, scaleMatrix, planeModelMatrix)
        },
        LEFT_CLICK(movement) {
          const feature = this.viewer.scene.pick(movement.position)
          console.log(feature)
        }
      }
    }
  </script>

# 属性

# vc-geometry-plane

属性名 类型 默认值 描述
vertexFormat Object optional 指定顶点坐标渲染类型。

# vc-geometry-outline-plane

属性名 类型 默认值 描述

参考官方文档：PlaneGeometry (opens new window)、 PlaneOutlineGeometry (opens new window)

# 事件

事件名 参数 描述
ready {Cesium, viewer, cesiumObject} 该组件渲染完毕时触发，返回 Cesium 类, viewer 实例，以及当前组件的 cesiumObject。

← vc-geometry-polygon-coplanar →