You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
|
/**
|
|
|
|
|
|
文件描述：空间分析方法
|
|
|
|
|
|
创建时间：2024/4/15 9:52
|
|
|
|
|
|
创建人：Zhaipeixiu
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
import {getDistance, getElevation} from "@/utils/map/geocomputation.ts";
|
|
|
|
|
|
import {Cartesian3, Viewer} from "cesium";
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
* 地形剖面分析数值计算
|
|
|
|
|
|
* @param viewer 地图Viewer
|
|
|
|
|
|
* @param start 起点
|
|
|
|
|
|
* @param end 终点
|
|
|
|
|
|
* @param interval 线段采样间隔 m为单位
|
|
|
|
|
|
* @return 从起点至终点剖面线的海拔高度数组
|
|
|
|
|
|
*/
|
|
|
|
|
|
export function elevationProfile(viewer: Viewer, start:Cartesian3, end:Cartesian3, interval: number)
|
|
|
|
|
|
{
|
|
|
|
|
|
let breakPointsHeight = []
|
|
|
|
|
|
// 计算首尾点距离 m
|
|
|
|
|
|
let totalLen = getDistance(start, end) * 1000
|
|
|
|
|
|
console.log('总距离',totalLen)
|
|
|
|
|
|
// 获取起点高度
|
|
|
|
|
|
breakPointsHeight.push(getElevation(viewer, start))
|
|
|
|
|
|
//断点数量
|
|
|
|
|
|
let breakNum = Math.floor(totalLen/interval)
|
|
|
|
|
|
console.log('断点数量',breakNum)
|
|
|
|
|
|
// 如果采样间隔小于首尾点距离，则获取每个断点的坐标 并获取其高度
|
|
|
|
|
|
if(breakNum>=1){
|
|
|
|
|
|
for (let i = 1; i <= breakNum; i++) {
|
|
|
|
|
|
let breakP = Cartesian3.lerp(start, end, i/breakNum, new Cartesian3())
|
|
|
|
|
|
breakPointsHeight.push(getElevation(viewer, breakP))
|
|
|
|
|
|
|
|
|
|
|
|
console.log(`断点${i}高度：`,getElevation(viewer, breakP))
|
|
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
// 获取终点高度
|
|
|
|
|
|
breakPointsHeight.push(getElevation(viewer, end))
|
|
|
|
|
|
return breakPointsHeight
|
|
|
|
|
|
}
|
