cesium-测量高度垂直距离-编程知识

cesium做垂直测量

完整代码

<template><div id="cesiumContainer" style="height: 100vh;"></div><div id="toolbar" style="position: fixed;top:20px;left:220px;"><el-breadcrumb><el-breadcrumb-item>量测</el-breadcrumb-item><el-breadcrumb-item>垂直距离</el-breadcrumb-item></el-breadcrumb><el-row class="mb-4" style="margin-top: 15px"><el-button type="primary" @click="handleDrawPolyline">画线</el-button><el-button type="primary" @click="handleDrawPolylineCancel">清除</el-button></el-row></div>
</template>
<script setup>
import {onMounted, ref} from "vue";
import * as Cesium from "cesium";
import InitCesium from "../js/InitCesiumHide.js";
import DrawVerticalDistance from "@/assets/utils/measure/DrawVerticalDistance.js";let viewer = null;
let verticalDistance = null;onMounted(() => {let initCesium = new InitCesium('cesiumContainer')viewer = initCesium.initViewer({});verticalDistance = new DrawVerticalDistance(viewer);flyToRight2();
})const handleDrawPolyline = () => {if (verticalDistance) {// 开始量算verticalDistance.start();}
}const handleDrawPolylineCancel = () => {if (!verticalDistance) return;verticalDistance.destroy();
}const flyToRight2 = async () => {let tileset = await Cesium.Cesium3DTileset.fromUrl('/src/assets/tileset/12/tileset.json', {});update3dtilesMaxtrix(tileset);viewer.scene.primitives.add(tileset);viewer.flyTo(tileset);
}function update3dtilesMaxtrix(tileSet) {//调整参数let params = {tx: 113.06265738392063, //模型中心X轴坐标（经度，单位：十进制度）ty: 22.646803971034342, //模型中心Y轴坐标（纬度，单位：十进制度）tz: 40, //模型中心Z轴坐标（高程，单位：米）rx: 0, //X轴（经度）方向旋转角度（单位：度）ry: 0, //Y轴（纬度）方向旋转角度（单位：度）rz: 2, //Z轴（高程）方向旋转角度（单位：度）scale: 1.3, //缩放比例};//旋转const mx = Cesium.Matrix3.fromRotationX(Cesium.Math.toRadians(params.rx));const my = Cesium.Matrix3.fromRotationY(Cesium.Math.toRadians(params.ry));const mz = Cesium.Matrix3.fromRotationZ(Cesium.Math.toRadians(params.rz));const rotationX = Cesium.Matrix4.fromRotationTranslation(mx);const rotationY = Cesium.Matrix4.fromRotationTranslation(my);const rotationZ = Cesium.Matrix4.fromRotationTranslation(mz);//平移const position = Cesium.Cartesian3.fromDegrees(params.tx,params.ty,params.tz);const m = Cesium.Transforms.eastNorthUpToFixedFrame(position);//旋转、平移矩阵相乘Cesium.Matrix4.multiply(m, rotationX, m);Cesium.Matrix4.multiply(m, rotationY, m);Cesium.Matrix4.multiply(m, rotationZ, m);//比例缩放const scale = Cesium.Matrix4.fromUniformScale(params.scale);Cesium.Matrix4.multiply(m, scale, m);// console.log("矩阵m:", m);//赋值给tilesettileSet._root.transform = m;
}
</script>
<style scoped>
#cesiumContainer {overflow: hidden;
}
</style>
<style>
.el-breadcrumb__inner {color: #ffffff !important;
}
</style>

InitCesiumHide

import * as Cesium from "cesium";class InitCesiumHide {constructor(cesiumContainer, options) {this.cesiumContainer = cesiumContainer;}initViewer(options) {Cesium.Ion.defaultAccessToken = 'token';// 西南东北，默认显示中国Cesium.Camera.DEFAULT_VIEW_RECTANGLE = Cesium.Rectangle.fromDegrees(90, -20, 110, 90);return new Cesium.Viewer(this.cesiumContainer, {animation: false, // 隐藏动画控件baseLayerPicker: false, // 隐藏图层选择控件fullscreenButton: false, // 隐藏全屏按钮vrButton: false, // 隐藏VR按钮，默认falsegeocoder: false, // 隐藏地名查找控件  地理编码homeButton: false, // 隐藏Home按钮infoBox: false, // 隐藏点击要素之后显示的信息窗口sceneModePicker: false, // 隐藏场景模式选择控件selectionIndicator: false, // 显示实体对象选择框，默认truetimeline: false, // 隐藏时间线控件navigationHelpButton: false, // 隐藏帮助按钮scene3DOnly: true, // 每个几何实例将只在3D中呈现，以节省GPU内存shouldAnimate: true, // 开启动画自动播放sceneMode: 3, // 初始场景模式 1：2D 2：2D循环 3：3D，默认3requestRenderMode: true, // 减少Cesium渲染新帧总时间并减少Cesium在应用程序中总体CPU使用率...options});}
}export default InitCesiumHide

DrawVerticalDistance

import BaseMeasure from "./baseMeasure";
import '../prompt/prompt.css'
import Prompt from '../prompt/prompt.js'
import * as Cesium from "cesium";/*** 三角测量类* @class* @augments BaseMeasure* @alias BaseMeasure.MeasureTriangle*/
class DrawVerticalDistance extends BaseMeasure {constructor(viewer, opt) {super(viewer, opt);if (!opt) opt = {};this.unitType = "length";this.style = opt.style || {};//线this.heightfloatLabel = null;this.spaceDistancefloatLabel = null;this.horizonDistancefloatLabel = null;this.heightLine = null;this.spaceLine = null;this.horizonLine = null;this.firstPosition = null;this.endPosition = null;this.midPosition = undefined;this.lowPosition = undefined;this.highPosition = undefined;}//开始测量start(callback) {if (!this.prompt && this.promptStyle.show) {this.prompt = new Prompt(this.viewer, this.promptStyle)}var that = this;this.state = 1;that.handler.setInputAction((evt) => { //单击开始绘制var cartesian = that.getCatesian3FromPX(evt.position, that.viewer);if (!cartesian) return;if (!that.firstPosition) {that.firstPosition = cartesian.clone();that.heightfloatLabel = that.createLabel(cartesian, "");that.spaceDistancefloatLabel = that.createLabel(cartesian, "", 10);that.horizonDistancefloatLabel = that.createLabel(cartesian, "");let point = that.createPoint(cartesian.clone());point.wz = 0;that.controlPoints.push(point);} else {that.endPosition = cartesian;that.computerPosition(that.firstPosition, that.endPosition);let point = that.createPoint(cartesian.clone());point.wz = 1;that.controlPoints.push(point);if (that.handler) {that.handler.destroy();that.handler = null;}if (that.prompt) {that.prompt.destroy();that.prompt = null;}that.state = "endCreate";if (callback) callback();}}, Cesium.ScreenSpaceEventType.LEFT_CLICK);this.handler.setInputAction(function (evt) {that.state = "creating";if (!that.firstPosition) {that.prompt.update(evt.endPosition, "左键点击确定起点，再次点击确定终点并结束");return;}that.prompt.update(evt.endPosition, "左键点击确定起点，再次点击确定终点并结束");var cartesian = that.getCatesian3FromPX(evt.endPosition, that.viewer);if (!cartesian) return;that.endPosition = cartesian;that.computerPosition(that.firstPosition, that.endPosition);if (that.firstPosition && that.endPosition && !that.heightLine) {that.heightLine = that.viewer.entities.add({polyline: {positions: new Cesium.CallbackProperty(function () {return [that.lowPosition, that.midPosition]}, false),show: true,material: new Cesium.PolylineOutlineMaterialProperty({color: Cesium.Color.GOLD,outlineWidth: 2,outlineColor: Cesium.Color.BLACK,}),width: 3,}});that.heightLine.objId = that.objId;that.horizonLine = that.viewer.entities.add({polyline: {positions: new Cesium.CallbackProperty(function () {return [that.highPosition, that.midPosition]}, false),show: true,material: new Cesium.PolylineOutlineMaterialProperty({color: Cesium.Color.GOLD,outlineWidth: 2,outlineColor: Cesium.Color.BLACK,}),width: 3,}});that.horizonLine.objId = that.objId;}if (that.heightLine) that.createLabels();}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);}//计算正上方的点computerPosition(p1, p2) {const cartographic1 = Cesium.Cartographic.fromCartesian(p1.clone());const cartographic2 = Cesium.Cartographic.fromCartesian(p2.clone());if (cartographic1.height > cartographic2.height) {this.highPosition = p1.clone();this.lowPosition = p2.clone();this.midPosition = Cesium.Cartesian3.fromRadians(cartographic2.longitude, cartographic2.latitude, cartographic1.height);} else {this.lowPosition = p1.clone();this.highPosition = p2.clone();this.midPosition = Cesium.Cartesian3.fromRadians(cartographic1.longitude, cartographic1.latitude, cartographic2.height);}}startEdit(callback) {if (!(this.state == "endCrerate" || this.state == "endEdit")) return;this.state = "startEdit";if (!this.modifyHandler) this.modifyHandler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas);let that = this;for (let i = 0; i < that.controlPoints.length; i++) {let point = that.controlPoints[i];if (point) point.show = true;}this.modifyHandler.setInputAction(function (evt) {let pick = that.viewer.scene.pick(evt.position);if (Cesium.defined(pick) && pick.id) {if (!pick.id.objId)that.modifyPoint = pick.id;that.forbidDrawWorld(true);}}, Cesium.ScreenSpaceEventType.LEFT_DOWN);this.modifyHandler.setInputAction(function (evt) {if (!that.modifyPoint) return;let cartesian = that.getCatesian3FromPX(evt.endPosition, that.viewer);if (!cartesian) return;that.modifyPoint.position.setValue(cartesian.clone());if (that.modifyPoint.wz == 0) {that.firstPosition = cartesian.clone()} else {that.endPosition = cartesian.clone()}that.computerPosition(that.firstPosition, that.endPosition);that.createLabels();}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);this.modifyHandler.setInputAction(function (evt) {if (!that.modifyPoint) return;that.modifyPoint = null;that.forbidDrawWorld(false);that.state = "endEdit";if (callback) callback();}, Cesium.ScreenSpaceEventType.LEFT_UP);}endEdit() {let that = this;this.state = "endEdit";if (this.modifyHandler) {this.modifyHandler.destroy();this.modifyHandler = null;}for (let i = 0; i < that.controlPoints.length; i++) {let point = that.controlPoints[i];if (point) point.show = false;}}createLabels() {let that = this;//高度差var height = Math.abs(Cesium.Cartographic.fromCartesian(that.highPosition).height - Cesium.Cartographic.fromCartesian(that.lowPosition).height);var height_mid = Cesium.Cartesian3.midpoint(that.lowPosition, that.midPosition, new Cesium.Cartesian3());that.heightfloatLabel.show = true;that.heightfloatLabel.position.setValue(height_mid);let text1 = that.formateLength(height, that.unit);that.heightfloatLabel.label.text = "垂直距离：" + text1;that.heightfloatLabel.length = height;}claer() {this.destroy();}//清除测量结果destroy() {this.state = "no";let that = this;if (that.heightLine) {that.viewer.entities.remove(that.heightLine);that.heightLine = null;}// if (this.spaceLine) {// 	this.viewer.entities.remove(this.spaceLine);// 	this.spaceLine = null;// }if (that.horizonLine) {that.viewer.entities.remove(that.horizonLine);that.horizonLine = null;}if (that.heightfloatLabel) {that.viewer.entities.remove(that.heightfloatLabel);that.heightfloatLabel = null;}that.heightfloatLabel = null;if (this.spaceDistancefloatLabel) {this.viewer.entities.remove(this.spaceDistancefloatLabel);this.spaceDistancefloatLabel = null;}that.spaceDistancefloatLabel = null;if (that.horizonDistancefloatLabel) {that.viewer.entities.remove(that.horizonDistancefloatLabel);that.horizonDistancefloatLabel = null;}that.horizonDistancefloatLabel = null;if (that.prompt) {that.prompt.destroy();that.prompt = null;}if (that.handler) {that.handler.destroy();that.handler = null;}}setUnit(unit) {if (this.heightfloatLabel) {let text1 = this.formateLength(this.heightfloatLabel.length, unit);this.heightfloatLabel.label.text = "垂直距离：" + text1;}this.unit = unit;}
}export default DrawVerticalDistance;

效果图