sdk4.0/src/Event/index.js

/**
 * @name: index
 * @author: Administrator
 * @date: 2022-06-14 14:44
 * @description：index
 * @update: 2022-06-14 14:44
 */

export default class MouseEvent {
  constructor(sdk) {
    this.sdk = sdk
    this.viewer = sdk.viewer
    this.handler = new Cesium.ScreenSpaceEventHandler(
      this.viewer.canvas
    )
  }

  /*事件*/
  mouse_left(cb) {
    // //左键点击事件
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)
      // cartesian = this.earth.czm.viewer.scene.pickPosition(movement.position)
      // if (!cartesian) {
      //   cartesian = this.viewer.scene.camera.pickEllipsoid(
      //     movement.position,
      //     this.viewer.scene.globe.ellipsoid
      //   )
      // }
      // if (cartesian) {
      //   cb(movement, cartesian)
      // }
      if (cartesian) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.LEFT_CLICK)
  }

  mouse_left_down(cb) {
    // //左键按下事件
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)
      if (cartesian) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.LEFT_DOWN)
  }
  mouse_left_up(cb) {
    // //左键抬起事件
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)
      if (cartesian) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.LEFT_UP)
  }

  mouse_move(cb, allowNull = false) {
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)

      if (cartesian || allowNull) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.MOUSE_MOVE)
  }

  mouse_right(cb, allowNull = false) {
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)
      if (cartesian || allowNull) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.RIGHT_CLICK)
  }

  mouse_right_down(cb, allowNull = false) {
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)
      if (cartesian || allowNull) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.RIGHT_DOWN)
  }

  mouse_right_up(cb, allowNull = false) {
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)
      if (cartesian || allowNull) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.RIGHT_UP)
  }

  mouse_wheel(cb) {
    this.handler && this.handler.setInputAction(() => {
      cb()
    }, Cesium.ScreenSpaceEventType.WHEEL)
  }

  getcartesian(movement) {
    // if (movement.endPosition) {
    //   movement.endPosition.y -= 2
    // }
    let position = movement.position || movement.endPosition
    if(movement.position1 && movement.position2) {
      position = {
        x: (movement.position1.x + movement.position2.x) / 2,
        y: (movement.position1.y + movement.position2.y) / 2,
      }
    }
    let cartesian = this.viewer.scene.pickPosition(position)
    if (!cartesian) {
      const ray = this.viewer.camera.getPickRay(position); //相交的射线
      let pickedObjects = this.viewer.scene.drillPickFromRay(ray, 10);
      let result = {}
      for (let i = 0; i < pickedObjects.length; i++) {
        if (pickedObjects[i].position) {
          result = pickedObjects[i]
          break
        }
      }
      cartesian = result.position
      if(!cartesian) {
        cartesian = this.viewer.scene.globe.pick(ray, this.viewer.scene);
      }
    }
    return cartesian
    // return this.earth.czm.viewer.scene.pickPosition(position)
  }

  //鼠标右键+键盘ctrl
  mouse_right_keyboard_ctrl(cb) {
    // //左键点击事件
    this.handler && this.handler.setInputAction(
      (movement) => {
        let cartesian = this.getcartesian(movement)
        if (cartesian) {
          cb(movement, cartesian)
        }
      },
      Cesium.ScreenSpaceEventType.RIGHT_CLICK,
      Cesium.KeyboardEventModifier.CTRL
    )
  }

  // 手势-双指触摸开始
  gesture_pinck_start(cb) {
    this.handler && this.handler.setInputAction((movement) => {
      let cartesian = this.getcartesian(movement)
      if (cartesian) {
        cb(movement, cartesian)
      }
    }, Cesium.ScreenSpaceEventType.PINCH_START)
  }

  //手势-双指触摸开始+键盘ctrl
  gesture_pinck_start_keyboard_ctrl(cb) {
    this.handler && this.handler.setInputAction(
      (movement) => {
        let cartesian = this.getcartesian(movement)
        if (cartesian) {
          cb(movement, cartesian)
        }
      },
      Cesium.ScreenSpaceEventType.PINCH_START,
      Cesium.KeyboardEventModifier.CTRL
    )
  }

  // 手势-双指触摸结束
  gesture_pinck_end(cb) {
    this.handler && this.handler.setInputAction((movement) => {
      cb()
    }, Cesium.ScreenSpaceEventType.PINCH_END)
  }

  // 手势-双指触摸修改
  gesture_pinck_move(cb) {
    this.handler && this.handler.setInputAction((movement) => {
      // let cartesian = this.getcartesian(movement)
      // if (cartesian) {
      //   cb(movement, cartesian)
      // }
    }, Cesium.ScreenSpaceEventType.PINCH_MOVE)
  }

  destroy() {
    if (this.handler)
      this.handler.destroy() //关闭事件句柄
    this.handler = null
  }
}