/// <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));
}