我正在尝试使用Google地图，turf.js和JSTS将重叠的多边形转换为非重叠的多边形。但是我从草皮和JSTS中都得到了一个错误。
我尝试了以下操作：
使用JSTS：
CheckIntersections() {
for (let i = 0; i < this.OverlappedPolygons.length; i++) { // Here I am having array of Overlapped Polygons
let polygon1 = this.OverlappedPolygons[i];
let wkt1 = this.ConvertToWkt(polygon1);
for (let k = 0; k < this.OverlappedPolygons.length; k++) {
if (this.OverlappedPolygons[i].id.trim().toUpperCase() !== this.OverlappedPolygons[k].id.trim().toUpperCase()) {
let polygon2 = this.OverlappedPolygons[k];
let wkt2 = this.ConvertToWkt(polygon2);
let wktReader = new jsts.io.WKTReader();
let geom1 = wktReader.read(wkt1);
let geom2 = wktReader.read(wkt2);
if (geom2.intersects(geom1)) {
let intersect = geom1.intersection(geom2);
let intersectpoly = this.ShowWktPoly(intersect, 'red', 0.8);
intersectpoly.setMap(this.map);
let new1 = geom1.difference(intersect);
let new2 = geom2.difference(intersect);
let newpoly1 = this.ShowWktPoly(new1, 'black', 0.2);
newpoly1.setMap(this.map);
let newpoly2 = this.ShowWktPoly(new2, 'black', 0.2);
newpoly2.setMap(this.map);
}
}
}
}
}
ConvertToWkt(poly1) {
let wicket = new Wkt.Wkt();
wicket.fromObject(poly1);
let wkt1 = wicket.write();
return wkt1;
}
ShowWktPoly(object, color, opacity) {
// Instantiate JSTS WKTWriter and get new geometry's WKT
let wktWriter = new jsts.io.WKTWriter();
let wkt = wktWriter.write(object);
// Use Wicket to ingest the new geometry's WKT
let wicket = new Wkt.Wkt();
wicket.read(wkt);
// Assemble your new polygon's options, I used object notation
let polyOptions = {
strokeColor: 'black',
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: color,
fillOpacity: opacity
};
// Let wicket return a Google Polygon with the options you set above
let poly = wicket.toObject(polyOptions);
return poly;
}
执行上述方法时出现以下错误：
ERROR TypeError: Ht.toLineString is not a function
使用turf.js
CheckIntersections() {
for (let i = 0; i < this.OverlappedPolygons.length; i++) { // Here I am having array of Overlapped Polygons
let selected = this.OverlappedPolygons[i].getPath().getArray();
let array1 = [];
for (let j = 0; j < selected.length; j++) {
let dt = selected[j];
let m = [];
m.push(dt.lat());
m.push(dt.lng());
array1.push(m);
}
let polygon1 = this.convert(array1);
for (let k = 0; k < this.OverlappedPolygons.length; k++) {
if (this.OverlappedPolygons[i].id.trim().toUpperCase() !== this.OverlappedPolygons[k].id.trim().toUpperCase()) {
let selected2 = this.OverlappedPolygons[k].getPath().getArray();
let array2 = [];
for (let j1 = 0; j1 < selected2.length; j1++) {
let dt = selected2[j1];
let m = [];
m.push(dt.lat());
m.push(dt.lng());
array2.push(m);
}
let polygon2 = this.convert(array2);
if (turf.intersect(polygon2, polygon1)) {
let intersect = turf.intersect(polygon2, polygon1);
if (intersect.geometry.type === 'Polygon') {
let new1 = turf.difference(polygon1, intersect.geometry);
let new2 = turf.difference(polygon2, intersect.geometry);
let array = [];
for (let j = 0; j < intersect.geometry.coordinates[0].length; j++) {
array.push({
'lat': intersect.geometry.coordinates[0][j][0],
'lng': intersect.geometry.coordinates[0][j][1],
});
}
let poly1 = this.ShowPolygon(array);
poly1.setMap(this.map);
this.NewPolygonsArray.push(poly1);
poly1.setOptions({ fillColor: 'red', fillOpacity: 0.8 });
array = [];
if (new1.geometry.type === 'MultiPolygon') {
for (let j = 0; j < new1.geometry.coordinates.length; j++) {
for (let j1 = 0; j1 < new1.geometry.coordinates[j][0].length; j1++) {
array.push({
'lat': new1.geometry.coordinates[j][0][j1][0],
'lng': new1.geometry.coordinates[j][0][j1][1],
});
}
let poly2 = this.ShowPolygon(array);
poly2.setOptions({ fillColor: 'black', fillOpacity: 0.2 });
poly2.setMap(this.map);
array = [];
}
} else {
for (let j = 0; j < new1.geometry.coordinates[0].length; j++) {
array.push({
'lat': new1.geometry.coordinates[0][j][0],
'lng': new1.geometry.coordinates[0][j][1],
});
}
let poly2 = this.ShowPolygon(array);
poly2.setOptions({ fillColor: 'black', fillOpacity: 0.2 });
poly2.setMap(this.map);
array = [];
}
if (new2.geometry.type === 'MultiPolygon') {
for (let j = 0; j < new2.geometry.coordinates.length; j++) {
for (let j1 = 0; j1 < new2.geometry.coordinates[j][0].length; j1++) {
array.push({
'lat': new2.geometry.coordinates[j][0][j1][0],
'lng': new2.geometry.coordinates[j][0][j1][1],
});
}
let poly3 = this.ShowPolygon(array);
poly3.setOptions({ fillColor: 'black', fillOpacity: 0.2 });
poly3.setMap(this.map);
array = [];
}
} else {
for (let j = 0; j < new2.geometry.coordinates[0].length; j++) {
array.push({
'lat': new2.geometry.coordinates[0][j][0],
'lng': new2.geometry.coordinates[0][j][1],
});
}
let poly3 = this.ShowPolygon(array);
poly3.setOptions({ fillColor: 'black', fillOpacity: 0.2 });
poly3.setMap(this.map);
array = [];
}
}
}
}
}
}
}
convert(points) {
let geojson = { 'type': 'Polygon', 'coordinates': [points] };
return geojson;
}
ShowPolygon(coords) {
let poly = new google.maps.Polygon({
path: coords,
strokeColor: 'black',
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: '' + this.getRandomColor(),
fillOpacity: 0.2,
editable: false
});
return poly;
}
对于上面的一个，我得到以下错误：
ERROR TypeError: this.seg.p1.equals2D is not a function
我正在尝试两种方法，但是都遇到了问题。为此工作了超过一天。
请帮助我解决这个问题。