private static Extent ToExtent(TileMatrixSet tileMatrixSet, WmtsTileSchema tileSchema, int[] ordinateOrder)
{
var boundingBox = tileMatrixSet.Item;
if (boundingBox != null)
{
// the BoundingBox element should always be in the same CRS as the SupportedCRS, we make a check anyway
if (string.IsNullOrEmpty(boundingBox.crs) || boundingBox.crs == tileMatrixSet.SupportedCRS)
{
var lowerCorner = boundingBox.LowerCorner;
var upperCorner = boundingBox.UpperCorner;
var lowerCornerDimensions = GetDimensions(lowerCorner);
var upperCornerDimensions = GetDimensions(upperCorner);
var xi = ordinateOrder[0];
var yi = ordinateOrder[1];
return(new Extent(
lowerCornerDimensions[xi],
lowerCornerDimensions[yi],
upperCornerDimensions[xi],
upperCornerDimensions[yi]));
}
}
// Compute the extent of the tile schema
var resolution = tileSchema.Resolutions.Last();
return(ToExtent(resolution.Value));
}
private static List <ITileSchema> GetTileMatrixSets(IEnumerable <TileMatrixSet> tileMatrixSets)
{
var tileSchemas = new List <ITileSchema>();
foreach (var tileMatrixSet in tileMatrixSets)
{
var tileSchema = new WmtsTileSchema();
foreach (var tileMatrix in tileMatrixSet.TileMatrix)
{
tileSchema.Resolutions.Add(ToResolution(tileMatrix));
}
// Extent should be determined by the WGS84BoundingBox of the layer but
// this would involve projection.
// also the Extent should move to the tileSource because it could differ
// between layers.
tileSchema.Extent = ToExtent(tileSchema.Resolutions.First().Value);
tileSchema.Name = tileMatrixSet.Identifier.Value;
tileSchema.Axis = AxisDirection.InvertedY;
tileSchema.Srs = tileMatrixSet.SupportedCRS;
tileSchemas.Add(tileSchema);
}
return(tileSchemas);
}
/// <summary>
/// Creates a copy of this schema with <see cref="Format"/> set to <paramref name="format"/>
/// </summary>
/// <param name="title">The layer title</param>
/// <param name="layer">The layer identifier</param>
/// <param name="abstract">A description for the layers content</param>
/// <param name="tileMatrixSet">The TileMatrixSet identifier</param>
/// <param name="style">The style identifier</param>
/// <param name="format">The format used for this style</param>
/// <returns>A tile schema</returns>
internal WmtsTileSchema CreateSpecific(string title, string layer, string @abstract, string tileMatrixSet, string style, string format)
{
if (string.IsNullOrEmpty(layer))
{
throw new ArgumentNullException("layer");
}
if (string.IsNullOrEmpty(tileMatrixSet))
{
throw new ArgumentNullException("tileMatrixSet");
}
if (string.IsNullOrEmpty(format))
{
throw new ArgumentNullException("format");
}
if (@abstract == null)
{
@abstract = string.Empty;
}
if (string.IsNullOrEmpty(style))
{
style = "null";
}
if (!format.StartsWith("image/"))
{
throw new ArgumentException("Not an image mime type");
}
var res = new WmtsTileSchema
{
YAxis = YAxis,
Extent = new Extent(Extent.MinX, Extent.MinY, Extent.MaxX, Extent.MaxY),
Title = title,
Layer = layer,
Abstract = @abstract,
TileMatrixSet = tileMatrixSet,
Style = style,
Format = format,
Name = Name,
Srs = Srs,
SupportedSRS = SupportedSRS
};
foreach (var resolution in Resolutions)
{
res.Resolutions.Add(resolution);
}
return(res);
}
/// <summary>
/// Creates a copy of this schema with <see cref="Format"/> set to <paramref name="format"/>
/// </summary>
/// <param name="abstract">A description for the layers content</param>
/// <param name="style">The style identifier</param>
/// <param name="format">The format used for this style</param>
/// <param name="identifier">The layer identifier</param>
/// <returns>A tile schema</returns>
internal WmtsTileSchema CreateSpecific(string identifier, string @abstract, string style, string format)
{
if (string.IsNullOrEmpty(identifier))
{
throw new ArgumentNullException("identifier");
}
if (string.IsNullOrEmpty(format))
{
throw new ArgumentNullException("format");
}
if (@abstract == null)
{
@abstract = string.Empty;
}
if (string.IsNullOrEmpty(style))
{
style = "null";
}
if (!format.StartsWith("image/"))
{
throw new ArgumentException("Not an image mime type");
}
var res = new WmtsTileSchema();
res.YAxis = YAxis;
res.Extent = new Extent(Extent.MinX, Extent.MinY, Extent.MaxX, Extent.MaxY);
res.Name = identifier;
res.Abstract = @abstract;
res.Style = style;
res.Format = format;
res.Identifier = identifier;
res.Name = Name;
foreach (var resolution in Resolutions)
{
res.Resolutions.Add(resolution);
}
res.Srs = Srs;
res.SupportedSRS = SupportedSRS;
return(res);
}
/// <summary>
/// Creates a copy of this schema with <see cref="Format"/> set to <paramref name="format"/>
/// </summary>
/// <param name="title">The layer title</param>
/// <param name="layer">The layer identifier</param>
/// <param name="abstract">A description for the layers content</param>
/// <param name="tileMatrixSet">The TileMatrixSet identifier</param>
/// <param name="style">The style identifier</param>
/// <param name="format">The format used for this style</param>
/// <returns>A tile schema</returns>
internal WmtsTileSchema CreateSpecific(string title, string layer, string @abstract, string tileMatrixSet, string style, string format)
{
if (string.IsNullOrEmpty(layer))
throw new ArgumentNullException("layer");
if (string.IsNullOrEmpty(tileMatrixSet))
throw new ArgumentNullException("tileMatrixSet");
if (string.IsNullOrEmpty(format))
throw new ArgumentNullException("format");
if (@abstract == null) @abstract = string.Empty;
if (string.IsNullOrEmpty(style)) style = "null";
if (!format.StartsWith("image/"))
throw new ArgumentException("Not an image mime type");
var res = new WmtsTileSchema
{
YAxis = YAxis,
Extent = new Extent(Extent.MinX, Extent.MinY, Extent.MaxX, Extent.MaxY),
Title = title,
Layer = layer,
Abstract = @abstract,
TileMatrixSet = tileMatrixSet,
Style = style,
Format = format,
Name = Name,
Srs = Srs,
SupportedSRS = SupportedSRS
};
foreach (var resolution in Resolutions) res.Resolutions.Add(resolution);
return res;
}
private static Extent ToExtent(TileMatrixSet tileMatrixSet, WmtsTileSchema tileSchema, int[] ordinateOrder)
{
var boundingBox = tileMatrixSet.Item;
if (boundingBox != null)
{
// the BoundingBox element should always be in the same CRS as the SupportedCRS, we make a check anyway
if (string.IsNullOrEmpty(boundingBox.crs) || boundingBox.crs == tileMatrixSet.SupportedCRS)
{
var lowerCorner = boundingBox.LowerCorner;
var upperCorner = boundingBox.UpperCorner;
var lowerCornerDimensions = GetDimensions(lowerCorner);
var upperCornerDimensions = GetDimensions(upperCorner);
var xi = ordinateOrder[0];
var yi = ordinateOrder[1];
return new Extent(
lowerCornerDimensions[xi],
lowerCornerDimensions[yi],
upperCornerDimensions[xi],
upperCornerDimensions[yi]);
}
}
// Compute the extent of the tile schema
var resolution = tileSchema.Resolutions.Last();
return ToExtent(resolution.Value);
}
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);
}
/// <summary>
/// Creates a copy of this schema with <see cref="Format"/> set to <paramref name="format"/>
/// </summary>
/// <param name="abstract">A description for the layers content</param>
/// <param name="style">The style identifier</param>
/// <param name="format">The format used for this style</param>
/// <param name="identifier">The layer identifier</param>
/// <returns>A tile schema</returns>
internal WmtsTileSchema CreateSpecific(string identifier, string @abstract, string style, string format)
{
if (string.IsNullOrEmpty(identifier))
throw new ArgumentNullException("identifier");
if (string.IsNullOrEmpty(format))
throw new ArgumentNullException("format");
if (@abstract == null) @abstract = string.Empty;
if (string.IsNullOrEmpty(style)) style = "null";
if (!format.StartsWith("image/"))
throw new ArgumentException("Not an image mime type");
var res = new WmtsTileSchema();
res.YAxis = YAxis;
res.Extent = new Extent(Extent.MinX, Extent.MinY, Extent.MaxX, Extent.MaxY);
res.Name = identifier;
res.Abstract = @abstract;
res.Style = style;
res.Format = format;
res.Identifier = identifier;
res.Name = Name;
foreach (var resolution in Resolutions)
res.Resolutions.Add(resolution);
res.Srs = Srs;
res.SupportedSRS = SupportedSRS;
return res;
}
