78 lines
2.8 KiB
C#
78 lines
2.8 KiB
C#
using Manager.DTOs;
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using NetTopologySuite;
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using NetTopologySuite.Geometries;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text.Json;
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using System;
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namespace ManagerService.Helpers
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{
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public static class GeometryMapper
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{
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public static GeometryDTO ToDto(this Geometry geometry)
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{
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return geometry switch
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{
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Point point => new GeometryDTO
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{
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type = "Point",
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coordinates = new List<double> { point.X, point.Y }
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},
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LineString line => new GeometryDTO
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{
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type = "LineString",
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coordinates = line.Coordinates
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.Select(coord => new List<double> { coord.X, coord.Y })
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.ToList()
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},
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Polygon polygon => new GeometryDTO
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{
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type = "Polygon",
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coordinates = new List<List<List<double>>>
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{
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polygon.ExteriorRing.Coordinates
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.Select(coord => new List<double> { coord.X, coord.Y })
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.ToList()
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}
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},
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_ => throw new NotSupportedException($"Geometry type {geometry.GeometryType} not supported.")
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};
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}
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public static Geometry FromDto(this GeometryDTO dto, GeometryFactory factory = null!)
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{
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factory ??= NtsGeometryServices.Instance.CreateGeometryFactory();
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return dto.type switch
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{
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"Point" => CreatePoint(dto, factory),
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"LineString" => CreateLineString(dto, factory),
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"Polygon" => CreatePolygon(dto, factory),
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_ => throw new NotSupportedException($"DTO type {dto.type} not supported.")
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};
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}
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private static Point CreatePoint(GeometryDTO dto, GeometryFactory factory)
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{
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var coords = ((JsonElement)dto.coordinates).Deserialize<List<double>>();
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return factory.CreatePoint(new Coordinate(coords[0], coords[1]));
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}
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private static LineString CreateLineString(GeometryDTO dto, GeometryFactory factory)
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{
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var coords = ((JsonElement)dto.coordinates).Deserialize<List<List<double>>>();
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var coordinates = coords.Select(c => new Coordinate(c[0], c[1])).ToArray();
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return factory.CreateLineString(coordinates);
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}
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private static Polygon CreatePolygon(GeometryDTO dto, GeometryFactory factory)
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{
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var rings = ((JsonElement)dto.coordinates).Deserialize<List<List<List<double>>>>();
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var exterior = rings.First().Select(c => new Coordinate(c[0], c[1])).ToArray();
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return factory.CreatePolygon(exterior);
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}
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}
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}
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