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;
}
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);
}