/**
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* @Author: Caven
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* @Date: 2020-08-30 23:12:09
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*/
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import { PlotEventType } from '@/utils/event/index.js'
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import midCartesian from '@/utils/math/index.js'
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import Edit from './Edit'
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class EditPolygon extends Edit {
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constructor(overlay) {
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super(overlay)
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}
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/**
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*
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* @private
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*/
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_mountedHook () {
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this._delegate.polygon.hierarchy = new global.DC.Namespace.Cesium.CallbackProperty(time => {
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if (this._positions.length > 2) {
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return new global.DC.Namespace.Cesium.PolygonHierarchy(this._positions)
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} else {
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return null
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}
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}, false)
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this._layer.entities.add(this._delegate)
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}
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/**
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*
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* @private
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*/
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_mountAnchor () {
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let positions = [].concat(
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this._overlay.delegate.polygon.hierarchy.getValue(global.DC.Namespace.Cesium.JulianDate.now())
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.positions
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)
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positions.push(positions[0])
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for (let i = 0; i < positions.length - 1; i++) {
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let mid = midCartesian(positions[i], positions[i + 1])
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this._positions.push(positions[i])
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this._positions.push(mid)
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}
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this._positions.forEach((item, index) => {
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this.curEditTool.fire(PlotEventType.CREATE_ANCHOR, {
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position: item,
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index: index,
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isMid: index % 2 !== 0
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})
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})
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}
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/**
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*
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* @param pickedAnchor
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* @param position
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* @returns {boolean}
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* @private
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*/
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_onEditAnchorStop ({ pickedAnchor, position }) {
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let properties = pickedAnchor.properties.getValue(global.DC.Namespace.Cesium.JulianDate.now())
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let currentIndex = properties.index
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if (properties.isMid) {
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let preMidPosition
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let nextMidPosition
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let len = this._positions.length
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if (currentIndex === len - 1) {
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preMidPosition = midCartesian(
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this._positions[currentIndex],
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this._positions[currentIndex - 1]
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)
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nextMidPosition = midCartesian(
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this._positions[currentIndex],
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this._positions[0]
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)
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} else {
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preMidPosition = midCartesian(
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this._positions[currentIndex],
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this._positions[currentIndex - 1]
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)
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nextMidPosition = midCartesian(
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this._positions[currentIndex],
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this._positions[currentIndex + 1]
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)
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}
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this._positions.splice(
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currentIndex,
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1,
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preMidPosition,
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position,
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nextMidPosition
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)
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this.curEditTool.fire(PlotEventType.CLEAR_ANCHOR)
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this._positions.forEach((item, index) => {
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this.curEditTool.fire(PlotEventType.CREATE_ANCHOR, {
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position: item,
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index: index,
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isMid: index % 2 !== 0
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})
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})
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}
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}
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/**
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*
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* @param pickedAnchor
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* @param position
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* @private
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*/
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_onAnchorMoving ({ pickedAnchor, position }) {
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let properties = pickedAnchor.properties.getValue(global.DC.Namespace.Cesium.JulianDate.now())
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let currentIndex = properties.index
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this._positions[currentIndex] = position
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let len = this._positions.length
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if (!properties.isMid) {
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let preAnchorIndex = -1
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let preMidAnchorIndex = -1
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let nextAnchorIndex = -1
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let nextMidAnchorIndex = -1
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if (currentIndex === 0) {
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preAnchorIndex = len - 2
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preMidAnchorIndex = len - 1
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nextAnchorIndex = currentIndex + 2
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nextMidAnchorIndex = currentIndex + 1
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} else if (currentIndex === len - 2) {
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preAnchorIndex = currentIndex - 2
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preMidAnchorIndex = currentIndex - 1
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nextAnchorIndex = 0
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nextMidAnchorIndex = len - 1
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} else {
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preAnchorIndex = currentIndex - 2
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preMidAnchorIndex = currentIndex - 1
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nextAnchorIndex = currentIndex + 2
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nextMidAnchorIndex = currentIndex + 1
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}
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let preMidPosition = midCartesian(
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this._positions[preAnchorIndex],
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this._positions[currentIndex]
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)
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let nextMidPosition = midCartesian(
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this._positions[nextAnchorIndex],
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this._positions[currentIndex]
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)
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this._positions[preMidAnchorIndex] = preMidPosition
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this._positions[nextMidAnchorIndex] = nextMidPosition
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this.curEditTool.fire(PlotEventType.UPDATE_ANCHOR, {
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index: preMidAnchorIndex,
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position: preMidPosition
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})
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this.curEditTool.fire(PlotEventType.UPDATE_ANCHOR, {
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index: nextMidAnchorIndex,
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position: nextMidPosition
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})
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}
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}
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}
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export default EditPolygon
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