131 lines
2.9 KiB
C#
131 lines
2.9 KiB
C#
// Copyright (c) 2022 - schick Informatik
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// bsmd.AIS2Service [MonitorZone.cs]: %UserDisplayName%
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// Description: Represents a geographical area that should be checked against
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// ship positions
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace bsmd.AIS2Service
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{
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#region class MonitorZone
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internal class MonitorZone
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{
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#region fields
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private int _id; // PK from database
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private List<GeoPoint> _vertices = new List<GeoPoint>();
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private List<MonitorAssignment> _assignments = new List<MonitorAssignment>();
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private string _name;
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#endregion
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#region Construction
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public MonitorZone(int id, string name)
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{
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_id = id; _name = name;
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}
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#endregion
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#region Properties
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public int Id { get { return _id; } }
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public string Name { get { return _name; } }
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public List<GeoPoint> Vertices { get { return _vertices; } }
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public List<MonitorAssignment> Assignments { get { return _assignments; } }
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public bool Active { get; set; }
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#endregion
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#region public methods
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public bool IsPointInPolygon4(GeoPoint testPoint)
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{
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bool result = false;
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int j = _vertices.Count() - 1;
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for (int i = 0; i < _vertices.Count(); i++)
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{
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if (_vertices[i].Lat < testPoint.Lat && _vertices[j].Lat >= testPoint.Lat || _vertices[j].Lat < testPoint.Lat && _vertices[i].Lat >= testPoint.Lat)
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{
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if (_vertices[i].Lon + (testPoint.Lat - _vertices[i].Lat) / (_vertices[j].Lat - _vertices[i].Lat) * (_vertices[j].Lon - _vertices[i].Lon) < testPoint.Lon)
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{
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result = !result;
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}
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}
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j = i;
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}
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return result;
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}
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#endregion
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}
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#endregion
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#region class GeoPoint
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internal class GeoPoint
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{
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private int _id;
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public GeoPoint(int id)
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{
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_id = id;
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}
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public int Id { get { return _id; } }
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public double Lat { get; set; }
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public double Lon { get; set; }
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}
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#endregion
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#region class MonitorAssignment
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internal class MonitorAssignment
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{
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private int _id;
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public MonitorAssignment(int id)
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{
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_id = id;
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}
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public enum ZoneMonitorType
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{
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INACTIVE,
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ENTER,
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EXIT,
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PASSTHROUGH, // outside - enter - inside - exit - outside
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LEAVE_AND_RETURN // inside - exit - outside - enter - insider
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}
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public int Id { get { return _id; } }
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public int MMSI { get; set; }
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public ZoneMonitorType MonitorType { get; set; } = ZoneMonitorType.INACTIVE;
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}
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#endregion
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}
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