/// <summary>
/// Returns true if the given ring is contained in this polygon.
/// </summary>
/// <returns></returns>
public bool Contains(LineairRing lineairRing)
{
// check if all points are inside this polygon.
foreach (var coordinate in lineairRing.Coordinates)
{
if (!this.Contains(coordinate))
{ // a coordinate ouside of this ring can never be part of a contained inner ring.
return(false);
}
}
// check if none of the points of this ring are inside the other ring.
foreach (var coordinate in this.Ring.Coordinates)
{
if (lineairRing.Contains(coordinate))
{ // a coordinate ouside of this ring can never be part of a contained inner ring.
return(false);
}
}
foreach (var hole in this.Holes)
{
foreach (var coordinate in hole.Coordinates)
{
if (lineairRing.Contains(coordinate))
{ // a coordinate ouside of this ring can never be part of a contained inner ring.
return(false);
}
}
}
return(true);
}
public void TestPolygonContainsPoint()
{
LineairRing outer = new LineairRing(new GeoCoordinate(0, 0),
new GeoCoordinate(5, 0), new GeoCoordinate(5, 5), new GeoCoordinate(0, 5), new GeoCoordinate(0, 0));
LineairRing inner = new LineairRing(new GeoCoordinate(2, 2),
new GeoCoordinate(4, 2), new GeoCoordinate(4, 4), new GeoCoordinate(2, 4),new GeoCoordinate(2, 2));
Polygon polygon = new Polygon(outer, new LineairRing[] { inner });
foreach (GeoCoordinate ringCoordinate in outer.Coordinates)
{
Assert.IsTrue(polygon.Contains(ringCoordinate));
}
foreach (GeoCoordinate ringCoordinate in inner.Coordinates)
{
Assert.IsFalse(polygon.Contains(ringCoordinate));
}
GeoCoordinate coordinate = new GeoCoordinate(1, 1);
Assert.IsTrue(polygon.Contains(coordinate));
coordinate = new GeoCoordinate(3, 3);
Assert.IsFalse(polygon.Contains(coordinate));
coordinate = new GeoCoordinate(-1, 1);
Assert.IsFalse(polygon.Contains(coordinate));
}
public void TestLineairRingContainsRing()
{
LineairRing inner = new LineairRing(new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0.2), new GeoCoordinate(0.2, 1), new GeoCoordinate(1, 1));
LineairRing outer = new LineairRing(new GeoCoordinate(0, 0),
new GeoCoordinate(2, 0), new GeoCoordinate(2, 2), new GeoCoordinate(0, 2), new GeoCoordinate(0, 0));
Assert.IsTrue(outer.Contains(inner));
}
public void TestGetMetaData()
{
var ring = new LineairRing(new GeoCoordinate(0, -1), new GeoCoordinate(1, 1),
new GeoCoordinate(-1, 1), new GeoCoordinate(0, -1));
var source = (new OsmGeo[0]).ToOsmStreamSource();
source.Meta.Add("source", "enumeration");
var filter = new OsmStreamFilterPoly(ring);
filter.RegisterSource(source);
var meta = filter.GetAllMeta();
Assert.IsTrue(meta.ContainsKeyValue("source", "enumeration"));
Assert.IsTrue(meta.ContainsKeyValue("poly", OsmSharp.Geo.Streams.GeoJson.GeoJsonConverter.ToGeoJson(ring)));
}
public void TestNodeAfterWay()
{
var ring = new LineairRing(new GeoCoordinate(0, -1), new GeoCoordinate(1, 1),
new GeoCoordinate(-1, 1), new GeoCoordinate(0, -1));
var filter = new OsmStreamFilterPoly(ring);
filter.RegisterSource(new OsmGeo[] {
Way.Create(1, 1, 2),
Node.Create(2, 10, 10)
});
Assert.Catch<OsmStreamNotSortedException>(() =>
{
var list = new List<OsmGeo>(
filter);
});
}
public void TestOneNode()
{
var ring = new LineairRing(new GeoCoordinate(0, -1), new GeoCoordinate(1, 1),
new GeoCoordinate(-1, 1), new GeoCoordinate(0, -1));
var filter = new OsmStreamFilterPoly(ring);
filter.RegisterSource(new OsmGeo[] {
Node.Create(1, 0, 0),
Node.Create(2, 10, 10)
});
var list = new List<OsmGeo>(
filter);
Assert.AreEqual(1, list.Count);
Assert.AreEqual(1, list[0].Id);
}
public bool Contains(LineairRing lineairRing)
{
foreach (GeoCoordinate coordinate in lineairRing.Coordinates)
{
if (!this.Contains(coordinate))
{
return(false);
}
}
foreach (GeoCoordinate coordinate in this.Coordinates)
{
if (lineairRing.Contains(coordinate))
{
return(false);
}
}
return(true);
}
public void TestLineairRingContainsPoint()
{
LineairRing ring = new LineairRing(new GeoCoordinate(0, 0),
new GeoCoordinate(3, 0), new GeoCoordinate(0, 3), new GeoCoordinate(0, 0));
foreach (GeoCoordinate ringCoordinate in ring.Coordinates)
{
Assert.IsTrue(ring.Contains(ringCoordinate));
}
GeoCoordinate coordinate = new GeoCoordinate(1, 1);
Assert.IsTrue(ring.Contains(coordinate));
coordinate = new GeoCoordinate(2, 2);
Assert.IsFalse(ring.Contains(coordinate));
coordinate = new GeoCoordinate(-1, 1);
Assert.IsFalse(ring.Contains(coordinate));
coordinate = new GeoCoordinate(0, 1);
Assert.IsTrue(ring.Contains(coordinate));
coordinate = new GeoCoordinate(1, 0);
Assert.IsTrue(ring.Contains(coordinate));
}
/// <summary>
/// Tessellates the given LineairRings.
/// </summary>
/// <param name="ring"></param>
/// <returns>A list of coordinates grouped per three.</returns>
public GeoCoordinate[] Tessellate(LineairRing ring)
{
// TODO: yes i know this can be more efficient; proof of concept!
// TODO: yes i know we know the number of triangles beforehand.
// TODO: yes i know we can create a strip instead of duplicating coordinates!!
List<GeoCoordinate> triangles = new List<GeoCoordinate>();
if (ring.Coordinates.Count < 3)
{
throw new ArgumentOutOfRangeException("Invalid ring detected, only 1 or 2 vertices.");
}
LineairRing workRing = new LineairRing(ring.Coordinates);
while (workRing.Coordinates.Count > 3)
{ // cut an ear.
int earIdx = 0;
while(!workRing.IsEar(earIdx))
{
earIdx++;
}
// ear should be found, cut it!
GeoCoordinate[] neighbours = workRing.GetNeigbours(earIdx);
triangles.Add(neighbours[0]);
triangles.Add(neighbours[1]);
triangles.Add(workRing.Coordinates[earIdx]);
// remove ear and update workring.
List<GeoCoordinate> ringCoordinates = workRing.Coordinates;
ringCoordinates.RemoveAt(earIdx);
workRing = new LineairRing(ringCoordinates);
}
if (ring.Coordinates.Count == 3)
{ // this ring is already a triangle.
triangles.Add(ring.Coordinates[0]);
triangles.Add(ring.Coordinates[1]);
triangles.Add(ring.Coordinates[2]);
}
return triangles.ToArray();
}
public void TestLineairRingContainsRing()
{
LineairRing outer = new LineairRing(new GeoCoordinate(0, 0),
new GeoCoordinate(5, 0), new GeoCoordinate(5, 5), new GeoCoordinate(0, 5), new GeoCoordinate(0, 0));
LineairRing inner = new LineairRing(new GeoCoordinate(1, 1),
new GeoCoordinate(2, 1), new GeoCoordinate(2, 2), new GeoCoordinate(1, 2), new GeoCoordinate(1, 1));
LineairRing test = new LineairRing(new GeoCoordinate(1, 3),
new GeoCoordinate(2, 3), new GeoCoordinate(2, 4), new GeoCoordinate(1, 4), new GeoCoordinate(1, 3));
Polygon polygon = new Polygon(outer, new LineairRing[] { inner });
Assert.IsTrue(polygon.Contains(test));
outer = new LineairRing(new GeoCoordinate(0, 0),
new GeoCoordinate(5, 0), new GeoCoordinate(5, 5), new GeoCoordinate(0, 5), new GeoCoordinate(0, 0));
inner = new LineairRing(new GeoCoordinate(1, 1),
new GeoCoordinate(4, 1), new GeoCoordinate(4, 4), new GeoCoordinate(1, 4), new GeoCoordinate(1, 1));
test = new LineairRing(new GeoCoordinate(2, 2),
new GeoCoordinate(3, 2), new GeoCoordinate(3, 3), new GeoCoordinate(2, 3), new GeoCoordinate(2, 2));
polygon = new Polygon(outer, new LineairRing[] { inner });
Assert.IsFalse(polygon.Contains(test));
}
/// <summary>
/// Creates a new polygon.
/// </summary>
/// <param name="outline">The outline of the polygon.</param>
public Polygon(LineairRing outline)
{
this.Holes = new List <LineairRing>();
this.Ring = outline;
}
public void TestOneNodeAndOneRelation()
{
var ring = new LineairRing(new GeoCoordinate(0, -1), new GeoCoordinate(1, 1),
new GeoCoordinate(-1, 1), new GeoCoordinate(0, -1));
var filter = new OsmStreamFilterPoly(ring);
filter.RegisterSource(new OsmGeo[] {
Node.Create(1, 0, 0),
Relation.Create(1, new RelationMember()
{
MemberId = 1,
MemberType = OsmGeoType.Node,
MemberRole = string.Empty
})
});
var list = new List<OsmGeo>(
filter);
Assert.AreEqual(2, list.Count);
Assert.AreEqual(1, list[0].Id);
Assert.AreEqual(OsmGeoType.Node, list[0].Type);
Assert.AreEqual(1, list[1].Id);
Assert.AreEqual(OsmGeoType.Relation, list[1].Type);
}
public void TestWayAfterRelation()
{
var ring = new LineairRing(new GeoCoordinate(0, -1), new GeoCoordinate(1, 1),
new GeoCoordinate(-1, 1), new GeoCoordinate(0, -1));
var filter = new OsmStreamFilterPoly(ring);
filter.RegisterSource(new OsmGeo[] {
Relation.Create(1, new RelationMember()
{
MemberId = 1,
MemberType = OsmGeoType.Node,
MemberRole = string.Empty
}),
Way.Create(1, 1, 2)
});
Assert.Catch<OsmStreamNotSortedException>(() =>
{
var list = new List<OsmGeo>(
filter);
});
}
/// <summary>
/// Adds a ring.
/// </summary>
private void AddGeometry(LineairRing geometry, int color, float width, bool fill)
{
if (geometry == null) { throw new ArgumentNullException(); }
this.AddPolygon(geometry.Coordinates.ToArray(), color, width, fill);
}
/// <summary>
/// Translates a lineair ring.
/// </summary>
/// <param name="scene">The scene to add primitives to.</param>
/// <param name="projection">The projection used to convert the objects.</param>
/// <param name="lineairRing"></param>
private void TranslateLineairRing(Scene2D scene, IProjection projection, LineairRing lineairRing)
{
// build the rules.
List<MapCSSRuleProperties> rules =
this.BuildRules(new MapCSSObject(lineairRing));
// validate what's there.
if (rules.Count == 0)
{
return;
}
// get x/y.
double[] x = null, y = null;
if (lineairRing.Coordinates != null &&
lineairRing.Coordinates.Count > 0)
{ // pre-calculate x/y.
x = new double[lineairRing.Coordinates.Count];
y = new double[lineairRing.Coordinates.Count];
for (int idx = 0; idx < lineairRing.Coordinates.Count; idx++)
{
x[idx] = projection.LongitudeToX(
lineairRing.Coordinates[idx].Longitude);
y[idx] = projection.LatitudeToY(
lineairRing.Coordinates[idx].Latitude);
}
// simplify.
if (x.Length > 2)
{
double[][] simplified = SimplifyCurve.Simplify(new double[][] { x, y }, 0.0001);
x = simplified[0];
y = simplified[1];
}
}
// add the z-index.
foreach (var rule in rules)
{
float minZoom = (float)projection.ToZoomFactor(rule.MinZoom);
float maxZoom = (float)projection.ToZoomFactor(rule.MaxZoom);
int zIndex;
if (!rule.TryGetProperty<int>("zIndex", out zIndex))
{
zIndex = 0;
}
// interpret the results.
if (x != null)
{ // there is a valid interpretation of this way.
int color;
int fillColor;
if (rule.TryGetProperty("fillColor", out fillColor))
{ // render as an area.
float fillOpacity;
if(rule.TryGetProperty("fillOpacity", out fillOpacity))
{
SimpleColor simpleFillColor = new SimpleColor() { Value = fillColor };
fillColor = SimpleColor.FromArgb((int)(255 * fillOpacity),
simpleFillColor.R, simpleFillColor.G, simpleFillColor.B).Value;
}
uint? pointsId = scene.AddPoints(x, y);
if (pointsId.HasValue)
{
scene.AddStylePolygon(pointsId.Value, this.CalculateSceneLayer(OffsetArea, zIndex), minZoom, maxZoom, fillColor, 1, true);
if (rule.TryGetProperty("color", out color))
{
scene.AddStylePolygon(pointsId.Value, this.CalculateSceneLayer(OffsetCasing, zIndex), minZoom, maxZoom, color, 1, false);
}
}
}
}
}
}
/// <summary>
/// Creates a new polygon.
/// </summary>
public Polygon(LineairRing outline, IEnumerable<LineairRing> holes)
{
this.Holes = holes;
this.Ring = outline;
}
public void TestGeometryCollectionSerialization()
{
var geometry1 = new LineString(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 1),
new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0)
});
var geometry2 = new LineString(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 2),
new GeoCoordinate(2, 2),
new GeoCoordinate(2, 0)
});
var geometry3 = new LineString(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 3),
new GeoCoordinate(3, 3),
new GeoCoordinate(3, 0)
});
var geometry4 = new LineairRing(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 1),
new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0),
new GeoCoordinate(0, 0)
});
var geometry5 = new Polygon(new LineairRing(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 1),
new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0),
new GeoCoordinate(0, 0)
}));
var geometry6 = new MultiPolygon(geometry5, new Polygon(new LineairRing(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 2),
new GeoCoordinate(2, 2),
new GeoCoordinate(2, 0),
new GeoCoordinate(0, 0)
})));
var geometry7 = new Point(new GeoCoordinate(0, 1));
var geometry8 = new MultiPoint(geometry7, new Point(new GeoCoordinate(0, 2)));
var geometryCollection = new GeometryCollection(
geometry1, geometry2, geometry3,
geometry4, geometry5, geometry6,
geometry7, geometry8);
var serialized = geometryCollection.ToGeoJson();
serialized = serialized.RemoveWhitespace();
Assert.AreEqual("{\"type\":\"GeometryCollection\",\"geometries\":[{\"type\":\"LineString\",\"coordinates\":[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0]]},{\"type\":\"LineString\",\"coordinates\":[[0.0,0.0],[2.0,0.0],[2.0,2.0],[0.0,2.0]]},{\"type\":\"LineString\",\"coordinates\":[[0.0,0.0],[3.0,0.0],[3.0,3.0],[0.0,3.0]]},{\"type\":\"Polygon\",\"coordinates\":[[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0],[0.0,0.0]]]},{\"type\":\"Polygon\",\"coordinates\":[[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0],[0.0,0.0]]]},{\"type\":\"MultiPolygon\",\"coordinates\":[[[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0],[0.0,0.0]]],[[[0.0,0.0],[2.0,0.0],[2.0,2.0],[0.0,2.0],[0.0,0.0]]]]},{\"type\":\"Point\",\"coordinates\":[1.0,0.0]},{\"type\":\"MultiPoint\",\"coordinates\":[[1.0,0.0],[2.0,0.0]]}]}",
serialized);
}
/// <summary>
/// Creates a new lineair ring from the given way and updates the assigned flags array.
/// </summary>
/// <param name="ways"></param>
/// <param name="way"></param>
/// <param name="assignedFlags"></param>
/// <param name="ring"></param>
/// <returns></returns>
private bool AssignRing(List<KeyValuePair<bool, CompleteWay>> ways, int way, bool[] assignedFlags, out LineairRing ring)
{
List<GeoCoordinate> coordinates = null;
assignedFlags[way] = true;
if (ways[way].Value.IsClosed())
{ // the was is closed.
// TODO: validate geometry: this should be a non-intersecting way.
coordinates = ways[way].Value.GetCoordinates();
}
else
{ // the way is open.
bool roleFlag = ways[way].Key;
// complete the ring.
List<CompleteNode> nodes = new List<CompleteNode>(ways[way].Value.Nodes);
if (this.CompleteRing(ways, assignedFlags, nodes, roleFlag))
{ // the ring was completed!
coordinates = new List<GeoCoordinate>(nodes.Count);
foreach (CompleteNode node in nodes)
{
coordinates.Add(node.Coordinate);
}
}
else
{ // oeps, assignment failed: backtrack again!
assignedFlags[way] = false;
ring = null;
return false;
}
}
ring = new LineairRing(coordinates);
return true;
}
/// <summary>
/// Builds the geometry from the given coordinates.
/// </summary>
/// <param name="coordinates"></param>
/// <returns></returns>
internal static Polygon BuildPolygon(List<object> coordinates)
{
if (coordinates == null) { throw new ArgumentNullException(); }
if (coordinates.Count >= 1)
{
var polygonCoordinates = new List<List<GeoCoordinate>>();
foreach (List<object> coordinates1 in coordinates)
{
var lineStringCoordinates = new List<GeoCoordinate>();
for (int idx = 0; idx < coordinates1.Count; idx++)
{
var pointCoordinate = coordinates1[idx] as List<object>;
if (pointCoordinate != null &&
pointCoordinate.Count == 2 &&
pointCoordinate[0] is double &&
pointCoordinate[1] is double)
{
lineStringCoordinates.Add(new Math.Geo.GeoCoordinate(
(double)pointCoordinate[1], (double)pointCoordinate[0]));
}
}
polygonCoordinates.Add(lineStringCoordinates);
}
var outer = new LineairRing(polygonCoordinates[0]);
var holes = new List<LineairRing>();
for (int idx = 1; idx < polygonCoordinates.Count; idx++)
{
holes.Add(new LineairRing(polygonCoordinates[idx]));
}
return new Polygon(outer, holes);
}
throw new Exception("Invalid coordinate collection.");
}
public void TestLineairRingSerialization()
{
var geometry = new LineairRing(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 1),
new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0),
new GeoCoordinate(0, 0)
});
var serialized = geometry.ToGeoJson();
serialized = serialized.RemoveWhitespace();
Assert.AreEqual("{\"type\":\"Polygon\",\"coordinates\":[[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0],[0.0,0.0]]]}",
serialized);
}
/// <summary>
/// Generates GeoJson for the given geometry.
/// </summary>
/// <param name="writer"></param>
/// <param name="geometry"></param>
/// <returns></returns>
internal static void Write(JsonWriter writer, LineairRing geometry)
{
if (writer == null) { throw new ArgumentNullException("writer"); }
if (geometry == null) { throw new ArgumentNullException("geometry"); }
writer.WriteStartObject();
writer.WritePropertyName("type");
writer.WriteValue("Polygon");
writer.WritePropertyName("coordinates");
writer.WriteStartArray();
writer.WriteStartArray();
foreach(var coordinate in geometry.Coordinates)
{
writer.WriteStartArray();
writer.WriteValue(coordinate.Longitude);
writer.WriteValue(coordinate.Latitude);
writer.WriteEndArray();
}
writer.WriteEndArray();
writer.WriteEndArray();
writer.WriteEndObject();
}
public Polygon(LineairRing outline, IEnumerable <LineairRing> holes)
{
this.Holes = holes;
this.Ring = outline;
}
public Polygon(LineairRing outline)
{
this.Holes = (IEnumerable <LineairRing>) new List <LineairRing>();
this.Ring = outline;
}
/// <summary>
/// Returns true if the given ring is contained in this ring.
/// </summary>
/// <param name="lineairRing"></param>
/// <returns></returns>
public bool Contains(LineairRing lineairRing)
{
// check if all points are inside this ring.
foreach (var coordinate in lineairRing.Coordinates)
{
if (!this.Contains(coordinate))
{ // a coordinate ouside of this ring can never be part of a contained inner ring.
return false;
}
}
// check if none of the points of this ring are inside the other ring.
foreach (var coordinate in this.Coordinates)
{
if (lineairRing.Contains(coordinate))
{ // a coordinate ouside of this ring can never be part of a contained inner ring.
return false;
}
}
return true;
}
public void TestFeatureSerialization()
{
// a feature with a point.
var geometry = (Geometry)new Point(new GeoCoordinate(0, 1));
var feature = new Feature(geometry);
var serialized = feature.ToGeoJson();
serialized = serialized.RemoveWhitespace();
Assert.AreEqual("{\"type\":\"Feature\",\"properties\":{},\"geometry\":{\"type\":\"Point\",\"coordinates\":[1.0,0.0]}}",
serialized);
feature = new Feature(geometry, new SimpleGeometryAttributeCollection(new GeometryAttribute[]
{
new GeometryAttribute()
{
Key = "key1",
Value = "value1"
}
}));
serialized = feature.ToGeoJson();
serialized = serialized.RemoveWhitespace();
Assert.AreEqual("{\"type\":\"Feature\",\"properties\":{\"key1\":\"value1\"},\"geometry\":{\"type\":\"Point\",\"coordinates\":[1.0,0.0]}}",
serialized);
// a feature with a linestring.
geometry = new LineString(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 1),
new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0)
});
feature = new Feature(geometry);
serialized = feature.ToGeoJson();
serialized = serialized.RemoveWhitespace();
Assert.AreEqual("{\"type\":\"Feature\",\"properties\":{},\"geometry\":{\"type\":\"LineString\",\"coordinates\":[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0]]}}",
serialized);
// a featurer with a linearring.
geometry = new LineairRing(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 1),
new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0),
new GeoCoordinate(0, 0)
});
feature = new Feature(geometry);
serialized = feature.ToGeoJson();
serialized = serialized.RemoveWhitespace();
Assert.AreEqual("{\"type\":\"Feature\",\"properties\":{},\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0],[0.0,0.0]]]}}",
serialized);
// a featurer with a polygon.
geometry = new Polygon(new LineairRing(
new GeoCoordinate[]
{
new GeoCoordinate(0, 0),
new GeoCoordinate(0, 1),
new GeoCoordinate(1, 1),
new GeoCoordinate(1, 0),
new GeoCoordinate(0, 0)
}));
feature = new Feature(geometry);
serialized = feature.ToGeoJson();
serialized = serialized.RemoveWhitespace();
Assert.AreEqual("{\"type\":\"Feature\",\"properties\":{},\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[0.0,0.0],[1.0,0.0],[1.0,1.0],[0.0,1.0],[0.0,0.0]]]}}",
serialized);
}
/// <summary>
/// Converts a lineairring into osm objects.
/// </summary>
/// <param name="linearRing"></param>
/// <returns></returns>
private static LineairRing ConvertLinearRing(OsmSharp.Xml.Kml.v2_1.LinearRingType linearRing)
{
// convert the coordinates.
IList<GeoCoordinate> coordinates = KmlGeoStreamSource.ConvertCoordinates(linearRing.coordinates);
// create the ring.
LineairRing ring = new LineairRing(coordinates);
ring.Attributes = new SimpleGeometryAttributeCollection();
ring.Attributes.Add("id", linearRing.id);
return ring;
}
/// <summary>
/// Creates a new polygon.
/// </summary>
public Polygon(LineairRing outline)
{
this.Holes = new List<LineairRing>();
this.Ring = outline;
}
/// <summary>
/// Interprets an OSM-object and returns the corresponding geometry.
/// </summary>
/// <param name="osmObject"></param>
/// <returns></returns>
public override GeometryCollection Interpret(CompleteOsmGeo osmObject)
{
// DISCLAIMER: this is a very very very simple geometry interpreter and
// contains hardcoded all relevant tags.
GeometryCollection collection = new GeometryCollection();
TagsCollectionBase tags;
if (osmObject != null)
{
switch (osmObject.Type)
{
case CompleteOsmType.Node:
TagsCollection newCollection = new TagsCollection(
osmObject.Tags);
newCollection.RemoveKey("FIXME");
newCollection.RemoveKey("node");
newCollection.RemoveKey("source");
if (newCollection.Count > 0)
{ // there is still some relevant information left.
collection.Add(new Point((osmObject as CompleteNode).Coordinate));
}
break;
case CompleteOsmType.Way:
tags = osmObject.Tags;
bool isArea = false;
if ((tags.ContainsKey("building") && !tags.IsFalse("building")) ||
(tags.ContainsKey("landuse") && !tags.IsFalse("landuse")) ||
(tags.ContainsKey("amenity") && !tags.IsFalse("amenity")) ||
(tags.ContainsKey("harbour") && !tags.IsFalse("harbour")) ||
(tags.ContainsKey("historic") && !tags.IsFalse("historic")) ||
(tags.ContainsKey("leisure") && !tags.IsFalse("leisure")) ||
(tags.ContainsKey("man_made") && !tags.IsFalse("man_made")) ||
(tags.ContainsKey("military") && !tags.IsFalse("military")) ||
(tags.ContainsKey("natural") && !tags.IsFalse("natural")) ||
(tags.ContainsKey("office") && !tags.IsFalse("office")) ||
(tags.ContainsKey("place") && !tags.IsFalse("place")) ||
(tags.ContainsKey("power") && !tags.IsFalse("power")) ||
(tags.ContainsKey("public_transport") && !tags.IsFalse("public_transport")) ||
(tags.ContainsKey("shop") && !tags.IsFalse("shop")) ||
(tags.ContainsKey("sport") && !tags.IsFalse("sport")) ||
(tags.ContainsKey("tourism") && !tags.IsFalse("tourism")) ||
(tags.ContainsKey("waterway") && !tags.IsFalse("waterway")) ||
(tags.ContainsKey("wetland") && !tags.IsFalse("wetland")) ||
(tags.ContainsKey("water") && !tags.IsFalse("water")) ||
(tags.ContainsKey("aeroway") && !tags.IsFalse("aeroway")))
{ // these tags usually indicate an area.
isArea = true;
}
if (tags.IsTrue("area"))
{ // explicitly indicated that this is an area.
isArea = true;
}
else if (tags.IsFalse("area"))
{ // explicitly indicated that this is not an area.
isArea = false;
}
if (isArea)
{ // area tags leads to simple polygon
LineairRing lineairRing = new LineairRing((osmObject as CompleteWay).GetCoordinates().ToArray<GeoCoordinate>());
lineairRing.Attributes = new SimpleGeometryAttributeCollection(tags);
collection.Add(lineairRing);
}
else
{ // no area tag leads to just a line.
LineString lineString = new LineString((osmObject as CompleteWay).GetCoordinates().ToArray<GeoCoordinate>());
lineString.Attributes = new SimpleGeometryAttributeCollection(tags);
collection.Add(lineString);
}
break;
case CompleteOsmType.Relation:
CompleteRelation relation = (osmObject as CompleteRelation);
tags = relation.Tags;
string typeValue;
if (tags.TryGetValue("type", out typeValue))
{ // there is a type in this relation.
if (typeValue == "multipolygon")
{ // this relation is a multipolygon.
Geometry geometry = this.InterpretMultipolygonRelation(relation);
if (geometry != null)
{ // add the geometry.
collection.Add(geometry);
}
}
else if (typeValue == "boundary")
{ // this relation is a boundary.
}
}
break;
}
}
return collection;
}
/// <summary>
/// Returns false if this mapcss interpreter does not contain an interpretation for an area with the given tags.
/// </summary>
/// <param name="tagsCollection"></param>
/// <returns></returns>
private bool AppliesToArea(TagsCollectionBase tagsCollection)
{
LineairRing ring = new LineairRing();
ring.Attributes = new SimpleGeometryAttributeCollection(tagsCollection);
List<MapCSSRuleProperties> rules = this.BuildRules(new MapCSSObject(ring));
return rules != null && rules.Count > 0;
}
