/// <summary> /// Parses series of polygons. /// </summary> /// <param name="tokens">The list of tokens.</param> /// <param name="is3D">bool value indicating whether polygon being parsed has z-coordinate.</param> /// <param name="isMeasured">bool value indicating whether polygon being parsed has m-value.</param> /// <returns>A list of polygons specified by tokens.</returns> private static IEnumerable <Polygon> ParsePolygons(WktTokensBuffer tokens, bool is3D, bool isMeasured) { List <Polygon> polygons = new List <Polygon>(); polygons.Add(WktReader.ParsePolygonText(tokens, is3D, isMeasured)); WktToken t = tokens.Peek(true); while (t.Type == TokenType.COMMA) { tokens.GetToken(true); polygons.Add(WktReader.ParsePolygonText(tokens, is3D, isMeasured)); t = tokens.Peek(true); } return(polygons); }
/// <summary> /// Parses a polygon tagged text. /// </summary> /// <param name="tokens">The list of tokens.</param> /// <returns>A polygon specified by tokens.</returns> /// <remarks><![CDATA[<polygon tagged text> ::= polygon {z}{m} <polygon text>]]></remarks> private static Polygon ParsePolygonTaggedText(WktTokensBuffer tokens) { WktReader.Expect("polygon", tokens); WktReader.Expect(TokenType.WHITESPACE, tokens); bool is3D = false; bool isMeasured = false; WktToken t = tokens.Peek(true); if (WktReader.TryParseDimensions(t, out is3D, out isMeasured)) { tokens.GetToken(true); WktReader.Expect(TokenType.WHITESPACE, tokens); } return(WktReader.ParsePolygonText(tokens, is3D, isMeasured)); }