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354
src/Obj/Analysis/CutFill/index.js
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354
src/Obj/Analysis/CutFill/index.js
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import Dialog from '../../../BaseDialog';
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import { html } from "./_element";
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// import CreatePolygon from "./CreatePolygon";
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import DrawPolygon from "../../../Draw/drawPolygon"
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class CutFillAnalysis {
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/**
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* @constructor 填挖方分析
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* @param sdk
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* **/
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constructor(sdk, options = {}, _Dialog = {}) {
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this.sdk = sdk;
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this.viewer = sdk.viewer;
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// if (!positions) throw new Error("no positions object!");
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// this.positions = positions;
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this.height = options.height || 70
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this.maxHeigh = -1000000;
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this.precision = options.precision || 125
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this.Dialog = _Dialog
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this.result = {
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allArea: "",
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cutArea: "",
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cutVolume: "",
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fillArea: "",
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fillVolume: "",
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noArea: "",
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}
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this.entities = []
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this.Draw = new DrawPolygon(this.sdk)
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YJ.Analysis.AnalysesResults.push(this)
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CutFillAnalysis.EditBox(this)
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}
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create() {
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this.clean()
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this.Draw.start((a, positions) => {
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if(!positions || positions.length<3) {
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let _error = '最少需要三个坐标！'
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console.warn(_error)
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window.ELEMENT && window.ELEMENT.Message({
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message: _error,
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type: 'warning',
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duration: 1500
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});
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return
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}
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let fromDegreesArray = []
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for (let i = 0; i < positions.length; i++) {
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fromDegreesArray.push(positions[i].lng, positions[i].lat, positions[i].alt)
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}
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this.positions = Cesium.Cartesian3.fromDegreesArrayHeights(fromDegreesArray)
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this.createPolygonGeo(this.positions);
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this.result = this.VolumeAnalysis();
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this.viewer.scene.screenSpaceCameraController.enableCollisionDetection = false; //允许相机进入地下
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})
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// const $this = this;
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// if (!this.cp) {
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// this.cp = new CreatePolygon(this.viewer)
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// }
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// this.cp.start(function () {
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// console.log($this.cp.activeShapePoints)
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// $this.positions = $this.cp.activeShapePoints;
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// $this.createPolygonGeo($this.positions);
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// $this.result = $this.VolumeAnalysis();
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// $this.viewer.entities.remove($this.cp.polygon);
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// $this.viewer.scene.screenSpaceCameraController.enableCollisionDetection = false; //允许相机进入地下
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// });
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}
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createPolygonGeo(points) {
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//计算网格粒度-精度
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let granularity = Math.PI / Math.pow(2, 11);
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granularity = granularity / this.precision;
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let polygonGeometry = new Cesium.PolygonGeometry.fromPositions({
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positions: points,
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vertexFormat: Cesium.PerInstanceColorAppearance.FLAT_VERTEX_FORMAT,
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granularity: granularity,
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});
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//创建自定义平面几何体
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this.geom = new Cesium.PolygonGeometry.createGeometry(polygonGeometry);
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}
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VolumeAnalysis() {
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let cutArea = 0,
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cutVolume = 0,
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fillArea = 0,
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fillVolume = 0,
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noArea = 0;
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const indices = this.geom.indices; //获取顶点索引数据
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if (!this.geom || !this.geom.attributes || !this.geom.attributes.position) {
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return;
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}
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const positions = this.geom.attributes.position.values;
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for (let index = 0; index < indices.length; index += 3) {
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const pos0 = this.returnPosition(positions, indices[index]);
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const pos1 = this.returnPosition(positions, indices[index + 1]);
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const pos2 = this.returnPosition(positions, indices[index + 2]);
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let entity = this.viewer.entities.add({
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name: "三角面",
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polygon: {
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hierarchy: [pos0.heightPos, pos1.heightPos, pos2.heightPos],
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perPositionHeight: true,
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material: Cesium.Color.fromRandom(),
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extrudedHeight: this.height,
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outline: true,
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outlineColor: Cesium.Color.BLACK,
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},
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});
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this.entities.push(entity)
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//水平状态下三角形面积
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const area = this.computeArea4Triangle(
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pos0.noHeightPos,
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pos1.noHeightPos,
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pos2.noHeightPos
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);
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//计算三个点的均高
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const height = (pos0.height + pos1.height + pos2.height) / 3;
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if (height < this.height) {
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// 需要填方的部分
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fillArea += area;
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const volume = area * (this.height - height);
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fillVolume += volume;
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} else if (height == this.height) {
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noArea += area;
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} else {
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// 需要挖方的部分
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cutArea += area;
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const volume = area * (height - this.height);
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cutVolume += volume;
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}
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}
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const allArea = cutArea + fillArea + noArea;
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// this.result = {
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// allArea,
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// cutArea,
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// cutVolume,
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// fillArea,
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// fillVolume,
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// noArea,
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// };
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this.result.allArea = allArea
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this.result.cutArea = cutArea
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this.result.cutVolume = cutVolume
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this.result.fillArea = fillArea
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this.result.fillVolume = fillVolume
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this.result.noArea = noArea
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return this.result;
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}
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computeCentroid4Polygon(positions) {
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let x = [],
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y = [];
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let allX = 0,
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allY = 0;
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for (let i = 0; i < positions.length; i++) {
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let cartographic = Cesium.Cartographic.fromCartesian(positions[i]);
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allX += cartographic.longitude;
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allY += cartographic.latitude;
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x.push(cartographic.longitude);
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y.push(cartographic.latitude);
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}
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let centroidx = allX / positions.length;
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let centroidy = allY / positions.length;
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const Cartographic = new Cesium.Cartographic(centroidx, centroidy);
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return Cesium.Cartesian3.fromRadians(
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Cartographic.longitude,
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Cartographic.latitude,
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this.maxHeigh + 30
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);
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}
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/**
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* 海伦公式求取三角形面积
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* @param {*} pos1
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* @param {*} pos2
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* @param {*} pos3
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* @returns 三角形面积㎡
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*/
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computeArea4Triangle(pos1, pos2, pos3) {
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let a = Cesium.Cartesian3.distance(pos1, pos2);
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let b = Cesium.Cartesian3.distance(pos2, pos3);
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let c = Cesium.Cartesian3.distance(pos3, pos1);
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let S = (a + b + c) / 2;
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return Math.sqrt(S * (S - a) * (S - b) * (S - c));
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}
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returnPosition(positions, index) {
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let cartesian = new Cesium.Cartesian3(
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positions[index * 3],
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positions[index * 3 + 1],
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positions[index * 3 + 2]
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);
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let cartographic = Cesium.Cartographic.fromCartesian(cartesian);
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let height = this.viewer.scene.sampleHeightSupported
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? this.viewer.scene.sampleHeight(cartographic)
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: this.viewer.scene.globe.getHeight(cartographic);
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if (height > this.maxHeigh) {
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this.maxHeigh = height;
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}
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return {
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heightPos: Cesium.Cartesian3.fromRadians(
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cartographic.longitude,
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cartographic.latitude,
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height
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),
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noHeightPos: Cesium.Cartesian3.fromRadians(
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cartographic.longitude,
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cartographic.latitude,
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0
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),
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height: height,
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};
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}
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static async EditBox(that) {
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if (that._DialogObject && that._DialogObject.close) {
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that._DialogObject.close()
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that._DialogObject = null
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}
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that._DialogObject = await new Dialog(that.sdk.viewer._container, {
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title: '土方分析', left: '180px', top: '100px',
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closeCallBack: () => {
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that.clean()
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that.Dialog.closeCallBack && that.Dialog.closeCallBack()
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},
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})
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await that._DialogObject.init()
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let contentElm = document.createElement('div');
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contentElm.innerHTML = html()
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that._DialogObject.contentAppChild(contentElm)
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that._DialogObject._element.body.className = that._DialogObject._element.body.className + ' cut-fill'
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// 高度值
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let e_height = contentElm.querySelector("input[name='height']")
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e_height.value = that.height
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e_height.addEventListener('blur', (e) => {
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let value = e.target.value
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if (e.data != '.' && (e.data != '-' || e.target.value)) {
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value = Number(value)
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if ((e.target.max) && value > Number(e.target.max)) {
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value = Number(e.target.max)
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}
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if ((e.target.min) && value < Number(e.target.min)) {
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value = Number(e.target.min)
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}
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e_height.value = value
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that.height = e_height.value;
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}
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});
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// 精度值
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let e_precision = contentElm.querySelector("input[name='precision']")
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e_precision.value = that.precision
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e_precision.addEventListener('blur', (e) => {
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let value = Number(e.target.value)
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if ((e.target.max) && value > Number(e.target.max)) {
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value = Number(e.target.max)
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}
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if ((e.target.min) && value < Number(e.target.min)) {
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value = Number(e.target.min)
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}
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e_precision.value = value
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that.precision = e_precision.value;
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});
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// 总分析面积
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let e_allArea = contentElm.querySelector("span[name='allArea']")
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e_allArea.innerHTML = that.result.allArea || 0
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Object.defineProperty(that.result, 'allArea', {
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get() {
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return e_allArea.innerHTML
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},
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set(value) {
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e_allArea.innerHTML = Number(value.toFixed(4))
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}
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})
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// 填方面积
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let e_fillArea = contentElm.querySelector("span[name='fillArea']")
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e_fillArea.innerHTML = that.result.fillArea || 0
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Object.defineProperty(that.result, 'fillArea', {
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get() {
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return e_fillArea.innerHTML
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},
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set(value) {
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e_fillArea.innerHTML = Number(value.toFixed(4))
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}
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})
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// 填方体积
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let e_fillVolume = contentElm.querySelector("span[name='fillVolume']")
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e_fillVolume.innerHTML = that.result.fillVolume || 0
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Object.defineProperty(that.result, 'fillVolume', {
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get() {
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return e_fillVolume.innerHTML
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},
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set(value) {
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e_fillVolume.innerHTML = Number(value.toFixed(4))
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}
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})
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// 挖方面积
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let e_cutArea = contentElm.querySelector("span[name='cutArea']")
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e_cutArea.innerHTML = that.result.cutArea || 0
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Object.defineProperty(that.result, 'cutArea', {
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get() {
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return e_cutArea.innerHTML
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},
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set(value) {
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e_cutArea.innerHTML = Number(value.toFixed(4))
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}
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})
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// 挖方体积
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let e_cutVolume = contentElm.querySelector("span[name='cutVolume']")
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e_cutVolume.innerHTML = that.result.cutVolume || 0
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Object.defineProperty(that.result, 'cutVolume', {
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get() {
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return e_cutVolume.innerHTML
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},
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set(value) {
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e_cutVolume.innerHTML = Number(value.toFixed(4))
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}
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})
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// 无须填挖面积
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let e_noArea = contentElm.querySelector("span[name='noArea']")
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e_noArea.innerHTML = that.result.noArea || 0
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Object.defineProperty(that.result, 'noArea', {
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get() {
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return e_noArea.innerHTML
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},
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set(value) {
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e_noArea.innerHTML = Number(value.toFixed(4))
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}
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})
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let newDivBtn = contentElm.getElementsByClassName('draw-btn')[0];
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newDivBtn.addEventListener('click', () => {
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that.create()
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});
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}
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clean() {
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this.Draw && this.Draw.end()
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for (let i = 0; i < this.entities.length; i++) {
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this.viewer.entities.remove(this.entities[i])
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}
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}
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destroy() {
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this.clean()
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if (this._DialogObject && this._DialogObject.close) {
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this._DialogObject.close()
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this._DialogObject = null
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}
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}
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}
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export default CutFillAnalysis;
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