/*
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* @Author: shuishen 1109946754@qq.com
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* @Date: 2023-03-31 10:52:25
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* @LastEditors: shuishen 1109946754@qq.com
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* @LastEditTime: 2023-08-15 09:30:00
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* @FilePath: \srs-police-affairs\src\utils\turfPolygon.js
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* @Description:
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*
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* Copyright (c) 2023 by ${git_name_email}, All Rights Reserved.
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*/
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import * as turf from "@turf/turf";
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function getAllRegionCenter(data) {
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let arr = [];
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data.forEach((item) => {
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if (item.position && item.position.length > 0) {
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arr.push(getRegionCenter(item.position));
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}
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});
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arr.push(arr[0]);
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if (arr.length == 1) {
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return arr[0];
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} else if (arr.length == 2) {
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return turf.centroid(turf.midpoint(turf.point(arr[0]), turf.point(arr[1])))
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.geometry.coordinates;
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} else {
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arr.push(arr[0]);
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return turf.centroid(turf.polygon([arr])).geometry.coordinates;
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}
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}
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function getRegionCenter(params) {
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let arr = [];
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params.forEach((areaArray) => {
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let data = JSON.parse(areaArray);
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if (data.type == "Polygon") {
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data.coordinates.forEach((item) => {
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arr.push(turf.centroid(turf.polygon([item])).geometry.coordinates);
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});
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} else {
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data.coordinates.forEach((item) => {
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arr.push(turf.centroid(turf.polygon([item[0]])).geometry.coordinates);
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});
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}
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});
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if (arr.length == 1) {
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return arr[0];
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} else if (arr.length == 2) {
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return turf.centroid(turf.midpoint(turf.point(arr[0]), turf.point(arr[1])))
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.geometry.coordinates;
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} else {
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arr.push(arr[0]);
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return turf.centroid(turf.polygon([arr])).geometry.coordinates;
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}
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}
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export const computerCapacity = (data, type = "", multiple = 4) => {
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if (type != "") {
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const center = getAllRegionCenter(data);
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if (type == "all") {
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global.viewer.flyToPosition(
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new global.DC.Position(
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Number(center[0] + 0.03),
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Number(center[1] - 0.3),
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Number(36000),
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Number(-3),
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Number(-45),
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Number(0)
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),
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function () {},
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3
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);
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} else {
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global.viewer.flyToPosition(
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new global.DC.Position(
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Number(center[0] + 0.0046),
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Number(center[1] - 0.04),
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Number(4000),
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Number(-3),
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Number(-45),
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Number(0)
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),
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function () {},
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3
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);
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}
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} else {
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let pointArr = [];
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data.forEach((item) => {
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if (item.longitude && item.latitude) {
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pointArr.push(turf.point([item.longitude, item.latitude]));
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return;
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}
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if (item.lng && item.lat) {
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pointArr.push(turf.point([item.lng, item.lat]));
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return;
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}
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});
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const features = turf.featureCollection(pointArr);
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const scope = turf.envelope(features).bbox;
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// const poly = turf.polygon([[[0, 29], [3.5, 29], [2.5, 32], [0, 29]]])
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var poly = turf.polygon([
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[
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[scope[0], scope[1]],
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[scope[2], scope[1]],
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[scope[2], scope[3]],
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[scope[0], scope[3]],
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[scope[0], scope[1]],
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],
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]);
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var scaledPoly = turf.transformScale(poly, multiple);
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let boxPoint = [];
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scaledPoly.geometry.coordinates[0].forEach((item) => {
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boxPoint.push(turf.point(item));
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});
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const boxFeatures = turf.featureCollection(boxPoint);
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const boxScope = turf.envelope(boxFeatures).bbox;
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global.viewer.flyToBounds(
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boxScope,
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{ heading: 0, pitch: -90, roll: 0 },
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(e) => {},
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3
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);
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}
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};
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export const getMapBounds = (data, type = "") => {
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let pointArr = [];
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data.forEach((item) => {
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pointArr.push(turf.point([item.x, item.y]));
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return;
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});
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const features = turf.featureCollection(pointArr);
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const scope = turf.envelope(features).bbox;
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// const poly = turf.polygon([[[0, 29], [3.5, 29], [2.5, 32], [0, 29]]])
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return scope;
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};
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export const getLineSpeed = (data, multiple) => {
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var line = turf.lineString(data);
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var length = turf.length(line, { units: "miles" });
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return (length * 1000) / multiple;
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};
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