private static List<ITileSchema> GetTileMatrixSets(IEnumerable<TileMatrixSet> tileMatrixSets)
{
// Get a set of well known scale sets. For these we don't need to have
var wkss = new WellKnownScaleSets();
// Axis order registry
var crsAxisOrder = new CrsAxisOrderRegistry();
// Unit of measure registry
var crsUnitOfMeasure = new CrsUnitOfMeasureRegistry();
var tileSchemas = new List<ITileSchema>();
foreach (var tileMatrixSet in tileMatrixSets)
{
// Check if a Well-Known scale set is used, either by Identifier or WellKnownScaleSet property
var ss = wkss[tileMatrixSet.Identifier.Value];
if (ss == null && !string.IsNullOrEmpty(tileMatrixSet.WellKnownScaleSet))
ss = wkss[tileMatrixSet.WellKnownScaleSet.Split(':').Last()];
// Try to parse the Crs
var supportedCrs = tileMatrixSet.SupportedCRS;
// Hack to fix broken crs spec
supportedCrs = supportedCrs.Replace("6.18:3", "6.18.3");
CrsIdentifier crs;
if (!CrsIdentifier.TryParse(supportedCrs, out crs))
{
// If we cannot parse the crs, we cannot compute tile schema, thus ignore.
// ToDo: Log this
continue;
}
// Get the ordinate order for the crs (x, y) or (y, x) aka (lat, long)
var ordinateOrder = crsAxisOrder[crs];
// Get the unit of measure for the crs
var unitOfMeasure = crsUnitOfMeasure[crs];
// Create a new WMTS tile schema
var tileSchema = new WmtsTileSchema();
// Add the resolutions
foreach (var tileMatrix in tileMatrixSet.TileMatrix)
{
tileSchema.Resolutions.Add(ToResolution(tileMatrix, ordinateOrder, unitOfMeasure.ToMeter, ss));
}
tileSchema.Extent = ToExtent(tileMatrixSet, tileSchema, ordinateOrder);
// Fill in the remaining properties
tileSchema.Name = tileMatrixSet.Identifier.Value;
tileSchema.YAxis = YAxis.OSM;
tileSchema.Srs = supportedCrs;
tileSchema.SupportedSRS = crs;
// record the tile schema
tileSchemas.Add(tileSchema);
}
return tileSchemas;
}
public void TestAxisOrder()
{
if (!File.Exists(EpsgAccessDatabase))
throw new IgnoreException("Epsg Access Database not found");
var unusual = new HashSet<int>();
using (var cn = new System.Data.OleDb.OleDbConnection(
string.Format("Provider=Microsoft.Jet.OLEDB.4.0; Data Source={0};", EpsgAccessDatabase)))
{
cn.Open();
var cmd = cn.CreateCommand();
cmd.CommandText = Sql;
using (var dr = cmd.ExecuteReader())
{
if (dr != null)
while (dr.Read())
{
var code = dr.GetInt32(0);
if (code > 32767) continue;
unusual.Add(code);
}
}
}
var crsAOR = new CrsAxisOrderRegistry();
/*
foreach (var code in unusual)
{
CrsIdentifier crs;
if (CrsIdentifier.TryParse("urn:ogc:def:crs:EPSG::" + code, out crs))
Assert.AreEqual(1, crsAOR[crs][0]);
}*/
for (var code = 1; code < 32768; code++)
{
CrsIdentifier crs;
if (CrsIdentifier.TryParse("urn:ogc:def:crs:EPSG::" + code, out crs))
{
var expected = unusual.Contains(code) ? 1 : 0;
Assert.AreEqual(expected, crsAOR[crs][0]);
}
}
}
private static List <ITileSchema> GetTileMatrixSets(IEnumerable <TileMatrixSet> tileMatrixSets,
BoundingBoxAxisOrderInterpretation bbaoi)
{
// Get a set of well known scale sets. For these we don't need to have
var wkss = new WellKnownScaleSets();
// Axis order registry
var crsAxisOrder = new CrsAxisOrderRegistry();
// Unit of measure registry
var crsUnitOfMeasure = new CrsUnitOfMeasureRegistry();
var tileSchemas = new List <ITileSchema>();
foreach (var tileMatrixSet in tileMatrixSets)
{
// Check if a Well-Known scale set is used, either by Identifier or WellKnownScaleSet property
var ss = wkss[tileMatrixSet.Identifier.Value];
if (ss == null && !string.IsNullOrEmpty(tileMatrixSet.WellKnownScaleSet))
{
ss = wkss[tileMatrixSet.WellKnownScaleSet.Split(':').Last()];
}
// Try to parse the Crs
var supportedCrs = tileMatrixSet.SupportedCRS;
// Hack to fix broken crs spec
supportedCrs = supportedCrs.Replace("6.18:3", "6.18.3");
CrsIdentifier crs;
if (!CrsIdentifier.TryParse(supportedCrs, out crs))
{
// If we cannot parse the crs, we cannot compute tile schema, thus ignore.
// ToDo: Log this
continue;
}
// Get the ordinate order for the crs (x, y) or (y, x) aka (lat, long)
var ordinateOrder = crsAxisOrder[crs];
// Get the unit of measure for the crs
var unitOfMeasure = crsUnitOfMeasure[crs];
// Create a new WMTS tile schema
var tileSchema = new WmtsTileSchema();
// Add the resolutions
foreach (var tileMatrix in tileMatrixSet.TileMatrix)
{
tileSchema.Resolutions.Add(ToResolution(tileMatrix, ordinateOrder, unitOfMeasure.ToMeter, ss));
}
tileSchema.Extent = ToExtent(tileMatrixSet, tileSchema, GetOrdinateOrder(bbaoi, ordinateOrder));
// Fill in the remaining properties
tileSchema.Name = tileMatrixSet.Identifier.Value;
tileSchema.YAxis = YAxis.OSM;
tileSchema.Srs = supportedCrs;
tileSchema.SupportedSRS = crs;
// record the tile schema
tileSchemas.Add(tileSchema);
}
return(tileSchemas);
}
