internal EpsgCrsGeocentric(int code, string name, EpsgArea area, bool deprecated, EpsgCoordinateSystem cs, EpsgDatumGeodetic geodeticDatum, EpsgCrsGeodetic baseCrs, int baseOperationCode)
: base(code, name, area, deprecated, cs, geodeticDatum, baseCrs, baseOperationCode)
{
Contract.Requires(code >= 0);
Contract.Requires(!String.IsNullOrEmpty(name));
Contract.Requires(area != null);
Contract.Requires(cs != null);
Contract.Requires(geodeticDatum != null);
}
internal EpsgCrsProjected(int code, string name, EpsgArea area, bool deprecated, EpsgCoordinateSystem cs, EpsgDatumGeodetic datum, EpsgCrsGeodetic baseCrs, int projectionCode)
: base(code, name, area, deprecated, cs, datum, baseCrs, projectionCode)
{
Contract.Requires(code >= 0);
Contract.Requires(!String.IsNullOrEmpty(name));
Contract.Requires(area != null);
Contract.Requires(baseCrs != null);
Contract.Requires(cs != null);
Contract.Requires(datum != null);
}
internal EpsgCrsGeodetic(int code, string name, EpsgArea area, bool deprecated, EpsgCoordinateSystem cs, EpsgDatumGeodetic geodeticDatum, EpsgCrsGeodetic baseCrs, int baseOperationCode)
: base(code, name, area, deprecated, cs)
{
Contract.Requires(code >= 0);
Contract.Requires(!String.IsNullOrEmpty(name));
Contract.Requires(area != null);
Contract.Requires(cs != null);
Contract.Requires(geodeticDatum != null);
GeodeticDatum = geodeticDatum;
BaseCrs = baseCrs;
BaseOperationCode = baseOperationCode;
}
internal EpsgCrsGeographic(int code, string name, EpsgArea area, bool deprecated, EpsgCoordinateSystem cs, EpsgDatumGeodetic geodeticDatum, EpsgCrsGeodetic baseCrs, int baseOperationCode, EpsgCrsKind kind)
: base(code, name, area, deprecated, cs, geodeticDatum, baseCrs, baseOperationCode)
{
Contract.Requires(code >= 0);
Contract.Requires(!String.IsNullOrEmpty(name));
Contract.Requires(area != null);
Contract.Requires(cs != null);
Contract.Requires(geodeticDatum != null);
_kind = kind;
}
internal EpsgCrsProjected(int code, string name, EpsgArea area, bool deprecated, EpsgCoordinateSystem cs, EpsgDatumGeodetic datum, EpsgCrsGeodetic baseCrs, int projectionCode)
: base(code, name, area, deprecated, cs, datum, baseCrs, projectionCode)
{
Contract.Requires(code >= 0);
Contract.Requires(!String.IsNullOrEmpty(name));
Contract.Requires(area != null);
Contract.Requires(baseCrs != null);
Contract.Requires(cs != null);
Contract.Requires(datum != null);
}
private IEnumerable <EpsgCrsPathSearchNode> FindAllCorePaths(EpsgCrsPathSearchNode fromNode, EpsgCrsGeodetic toCrs, SearchOptions searchOptions)
{
Contract.Requires(fromNode != null);
Contract.Requires(fromNode.Crs is EpsgCrsGeodetic);
Contract.Requires(toCrs != null);
var earlyResults = new List <EpsgCrsPathSearchNode>();
var fromCrs = (EpsgCrsGeodetic)fromNode.Crs;
// construct the hierarchy based on the from CRS
var fromStack = new List <EpsgCrsPathSearchNode>();
var fromStackConstructionNode = fromNode;
do
{
fromStack.Add(fromStackConstructionNode);
var currentCrs = (EpsgCrsGeodetic)fromStackConstructionNode.Crs;
if (!currentCrs.HasBaseOperation)
{
break;
}
var baseCrs = currentCrs.BaseCrs;
var fromBaseEdge = currentCrs.GetBaseOperation();
Contract.Assume(baseCrs != null);
Contract.Assume(fromBaseEdge != null);
if (!fromBaseEdge.HasInverse)
{
break; // we have to invert the edge to traverse up the stack
}
var toBaseEdge = fromBaseEdge.GetInverse();
fromStackConstructionNode = new EpsgCrsPathSearchNode(baseCrs, toBaseEdge, fromStackConstructionNode);
} while (true /*fromStackSearchNode != null*/);
// construct the hierarchy based on the to CRS
var toStack = new List <GeodeticCrsStackItem>();
var toStackConstructionCrs = toCrs;
do
{
toStack.Add(new GeodeticCrsStackItem {
Crs = toStackConstructionCrs
});
toStackConstructionCrs = toStackConstructionCrs.BaseCrs;
} while (toStackConstructionCrs != null);
var lowestStackIntersection = FindLowestStackIntersection(fromStack, toStack);
if (lowestStackIntersection != null)
{
earlyResults.Add(lowestStackIntersection);
}
var directResults = FindDirectTransformations(fromStack, toStack, searchOptions);
var indirectResults = FindIndirectTransformations(fromStack, toStack, searchOptions);
return(earlyResults.Concat(directResults).Concat(indirectResults));
}