import * as turf from '@turf/turf';
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import store from '../../../store';
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import { Grid_Insert } from '@/api/api'
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import Bus from '../../../components/tools/Bus';
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var drawGrid = {
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id: "Rectangle",
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ids: [],
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flag: null,
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drawRect: function () {
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this.handler = new Cesium.ScreenSpaceEventHandler(viewer.canvas);
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var points = [];
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var shape = this.renderRect(points);
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var step = 0;
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var $this = this;
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this.handler.setInputAction(function (e) {
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var cartesian = viewer.scene.pickPosition(e.position);
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if (!Cesium.defined(cartesian)) {
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var ray = viewer.camera.getPickRay(e.position);
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cartesian = viewer.scene.globe.pick(ray, viewer.scene);
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}
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points[step] = cartesian;
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step++;
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if (step === 3) {
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$this.handler.destroy();
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store.state.isshowGrid = true
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}
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}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
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this.handler.setInputAction(function (e) {
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var cartesian = viewer.scene.pickPosition(e.startPosition);
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if (!Cesium.defined(cartesian)) {
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var ray = viewer.camera.getPickRay(e.startPosition);
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cartesian = viewer.scene.globe.pick(ray, viewer.scene);
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}
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points[2] = cartesian;
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}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
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},
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removeRect: function () {
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var entity = Viewer.entities._entities._array;
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for (var i = 0; i < entity.length; i++) {
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if (entity[i].id == 'Rectangle') {
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Viewer.entities.remove(entity[i])
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i--
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}
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}
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},
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renderRect: function (points) {
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var shape = Viewer.entities.add({
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id: this.id,
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polygon: {
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hierarchy: new Cesium.CallbackProperty(function () {
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if (points[0] && points[1] && points[2]) {
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var r0 = Cesium.Cartographic.fromCartesian(points[0]);
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var r1 = Cesium.Cartographic.fromCartesian(points[1]); // 辅助点
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var r2 = Cesium.Cartographic.fromCartesian(points[2]);
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var p0 = turf.point([
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(r0.longitude * 180) / Math.PI,
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(r0.latitude * 180) / Math.PI
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]);
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var p1 = turf.point([
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(r1.longitude * 180) / Math.PI,
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(r1.latitude * 180) / Math.PI
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]);
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var p2 = turf.point([
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(r2.longitude * 180) / Math.PI,
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(r2.latitude * 180) / Math.PI
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]);
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this.rectanglePoint = p1;
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var bearing1 = turf.rhumbBearing(p0, p1);
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var bearing2 = turf.rhumbBearing(p0, p2);
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var angle1 = bearing2 - bearing1;
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// 对角长度
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var length = turf.distance(p0, p2, { units: "meters" });
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var len1 = Math.cos((angle1 / 180) * Math.PI) * length;
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var dest1 = turf.destination(p0, len1, bearing1, { units: "meters" });
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var angle2 = 90 - angle1;
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var len2 = Math.cos((angle2 / 180) * Math.PI) * length;
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var dest2 = turf.destination(p0, len2, 90 + bearing1, {
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units: "meters",
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});
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var coordinates = [
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points[0],
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Cesium.Cartesian3.fromDegrees(dest1.geometry.coordinates[0], dest1.geometry.coordinates[1]),
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points[2],
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Cesium.Cartesian3.fromDegrees(dest2.geometry.coordinates[0], dest2.geometry.coordinates[1])
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];
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return new Cesium.PolygonHierarchy(coordinates);
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}
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}, false),
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material: Cesium.Color.CYAN.withAlpha(0.5),
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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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return shape;
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},
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drawPoint: function (res) {
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var rect = viewer.entities.getById(this.id);
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if (!rect) return;
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var points = rect.polygon.hierarchy.getValue().positions;
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//var r0 = Cesium.Cartographic.fromCartesian(points[0]);
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//var r1 = Cesium.Cartographic.fromCartesian(points[1]);
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//var r2 = Cesium.Cartographic.fromCartesian(points[2]);
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var r0 = Cesium.Cartographic.fromCartesian(points[0]);
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var r1 = Cesium.Cartographic.fromCartesian(points[1]);
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var r2 = Cesium.Cartographic.fromCartesian(points[2]);
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var p0 = turf.point([(r0.longitude * 180) / Math.PI, (r0.latitude * 180) / Math.PI]);
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var p1 = turf.point([(r1.longitude * 180) / Math.PI, (r1.latitude * 180) / Math.PI]);
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var p2 = turf.point([(r2.longitude * 180) / Math.PI, (r2.latitude * 180) / Math.PI]);
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// 做成 3 * 4 的网格
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var wCount = res.col + 1, hCount = res.row + 1;
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this.flag = parseInt(res.col) * parseInt(res.col);
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var wStep = turf.distance(p0, p1, { units: "meters" }) / (wCount - 1);
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var hStep = turf.distance(p1, p2, { units: "meters" }) / (hCount - 1);
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var wAngle = turf.bearing(p0, p1);
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var hAngle = turf.bearing(p1, p2);
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var op = { units: "meters", };
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var arr = [p0.geometry.coordinates];
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this.removeRect();
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for (var i = 1; i < hCount; i++) {
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for (var j = 1; j < wCount; j++) {
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var start_west, start_hest;
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if (j == 1) {
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start_west = p0.geometry.coordinates;
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} else {
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start_west = turf.destination(p0, wStep * (j - 1), wAngle, op).geometry.coordinates;
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}
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var end_west = turf.destination(p0, wStep * j, wAngle, op).geometry.coordinates;
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var start_hest = turf.destination(start_west, hStep * i, hAngle, op).geometry.coordinates;
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var end_hest = turf.destination(end_west, hStep * i, hAngle, op).geometry.coordinates;
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var val = [
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[start_west[0], start_west[1],18],
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[end_west[0], end_west[1],18],
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[end_hest[0], end_hest[1],18],
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[start_hest[0], start_hest[1],18],
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[start_west[0], start_west[1],18]
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]
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this.setInsertGridData(val, (i * j))
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}
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}
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},
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setGridRowCol: function (res) {
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store.state.isshowGrid = false;
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this.drawPoint(res);
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},
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async setInsertGridData(res, num) {
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var obj =
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{
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"type": "Feature",
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"properties":
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{ "ID": num, "NAME": "Area8", "REMARK": "" },
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"geometry":
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{
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"type": "Polygon",
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"coordinates": [
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res
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]
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}
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}
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const data = await Grid_Insert({ json: JSON.stringify(obj) })
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if (data.status == 200) {
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this.ids.push(data.data)
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}
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if (this.flag == num) {
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var obj = {
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id: new Date().getTime(),
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sourceType: 'DrawGrid',
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name: "新建格网",
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style: {
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ids: this.ids,
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sourceType: 'DrawGrid',
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}
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}
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Bus.$emit("addOtherData", "对象", obj);
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}
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}
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};
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export default drawGrid
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