private static IGeometryObject toGeometry(this PatternPairMatch wktPattern)
{
switch (wktPattern.Left.Groups[1].Value.ToLower())
{
case "point":
return(wktPattern.toPoint());
case "polygon":
return(wktPattern.toPolygon());
case "linestring":
return(wktPattern.toLineString());
case "multipolygon":
return(wktPattern.toMultiPolygon());
case "multipoint":
return(wktPattern.toMultiPoint());
case "multilinestring":
return(wktPattern.toMultiLineString());
case "geometrycollection":
return(wktPattern.toGeometryCollection());
default:
throw new Exception($@"Unable to Parse Geometry Type '{wktPattern.Left.Groups[1].Value}'");
}
}
private static MultiPoint toMultiPoint(this PatternPairMatch match)
{
IEnumerable <Point> points;
if (match.Children.Count > 0)
{
points = match.Children.Select(pointMatch => new Point(WktPointToPosition(pointMatch.Content)));
}
else
{
points = WktPointsToPositions(match.Content).Select(position => new Point(position));
}
// only 1 level of points
return(new MultiPoint(points));
}
private static GeometryCollection toGeometryCollection(this PatternPairMatch match)
{
return(new GeometryCollection(match.Children.Select(geometry => geometry.toGeometry())));
}
private static MultiPolygon toMultiPolygon(this PatternPairMatch match)
{
// 2 levels of points
return(new MultiPolygon(match.Children.Select(polygonMatch => polygonMatch.toPolygon())));
}
private static Polygon toPolygon(this PatternPairMatch match)
{
// 2 levels of points
return(new Polygon(match.Children.Select(lineStringMatch => lineStringMatch.toLineString())));
}
private static MultiLineString toMultiLineString(this PatternPairMatch match)
{
// only 1 level of points
return(new MultiLineString(match.Children.Select(lineStringMatch => lineStringMatch.toLineString())));
}
private static LineString toLineString(this PatternPairMatch match)
{
// only 1 level of points
return(new LineString(match.Content.WktPointsToPositions()));
}
private static Point toPoint(this PatternPairMatch match)
{
return(new Point(WktPointToPosition(match.Content)));
}