public static string ToWKT(this Esri.FileGDB.ShapeBuffer geometry)
{
try
{
string retval = "";
var shapeType = (ShapeType)geometry.shapeType;
//note: "M" values are not really supported. Relevant geometries are handled to extract Z values, if present.
switch (shapeType)
{
case ShapeType.Multipoint:
case ShapeType.MultipointZ:
case ShapeType.MultipointZM:
MultiPointShapeBuffer mptbuff = geometry;
retval = processMultiPointBuffer(mptbuff);
break;
case ShapeType.Point:
case ShapeType.PointZ:
case ShapeType.PointZM:
PointShapeBuffer pt = geometry;
retval = processPointBuffer(geometry);
break;
case ShapeType.Polyline:
case ShapeType.PolylineZ:
case ShapeType.PolylineZM:
MultiPartShapeBuffer lbuff = geometry;
retval = processMultiPartBuffer(lbuff, "MULTILINESTRING");
break;
case ShapeType.Polygon:
case ShapeType.PolygonZ:
case ShapeType.PolygonZM:
MultiPartShapeBuffer pbuff = geometry;
retval = processMultiPartBuffer(pbuff, "MULTIPOLYGON");
break;
}
return(retval);
}
catch (Exception ex)
{
throw new Exception("Error processing geometry", ex);
}
}
private static string processPointBuffer(PointShapeBuffer buffer)
{
try
{
string retval = "POINT ({0})";
bool hasZ = false;
try
{
hasZ = (buffer.Z != null);
}
catch
{
hasZ = false;
}
string coord = hasZ ? getCoordinate(buffer.point.x, buffer.point.y, buffer.Z) : getCoordinate(buffer.point.x, buffer.point.y);
retval = string.Format(retval, coord);
return(retval);
}
catch (Exception ex)
{
throw new Exception("Error processing point buffer", ex);
}
}
private static string processPointBuffer(PointShapeBuffer buffer)
{
try
{
StringBuilder retval = new StringBuilder("{\"type\":\"Point\", \"coordinates\": ");
bool hasZ = false;
try
{
hasZ = (buffer.Z != null); //this should always be true because a double is never null, but API throws and exception if no Z.
}
catch
{
hasZ = false;
}
string coord = hasZ ? getCoordinate(buffer.point.x, buffer.point.y, buffer.Z) : getCoordinate(buffer.point.x, buffer.point.y);
retval.Append(coord);
retval.Append("}");
return retval.ToString();
}
catch (Exception ex)
{
throw new Exception("Error processing point buffer", ex);
}
}
private static string processPointBuffer(PointShapeBuffer buffer)
{
try
{
string retval = "POINT ({0})";
bool hasZ = false;
try
{
hasZ = (buffer.Z != null);
}
catch
{
hasZ = false;
}
string coord = hasZ ? getCoordinate(buffer.point.x, buffer.point.y, buffer.Z) : getCoordinate(buffer.point.x, buffer.point.y);
retval = string.Format(retval, coord);
return retval;
}
catch (Exception ex)
{
throw new Exception("Error processing point buffer", ex);
}
}
private static IMapPoint ToGeneralPoint(PointShapeBuffer point)
{
var pointGeo = new GeometryFactory().CreatePoint(point.point.x, point.point.y);
return(pointGeo);
}
private static IMapPoint ToGeneralPoint(PointShapeBuffer point)
{
var pointGeo = new GeometryFactory().CreatePoint(point.point.x, point.point.y);
return pointGeo;
}
private static string processPointBuffer(PointShapeBuffer buffer)
{
string retval = "{\"type\":\"Point\", \"coordinates\": ";
retval += getCoordinate(buffer.point.x, buffer.point.y) + "}";
return retval;
}
private static string processPointBuffer(PointShapeBuffer buffer)
{
try
{
StringBuilder retval = new StringBuilder("{\"type\":\"Point\", \"coordinates\": ");
bool hasZ = false;
try
{
hasZ = (buffer.Z != null); //this should always be true because a double is never null, but API throws and exception if no Z.
}
catch
{
hasZ = false;
}
string coord = hasZ ? getCoordinate(buffer.point.x, buffer.point.y, buffer.Z) : getCoordinate(buffer.point.x, buffer.point.y);
retval.Append(coord);
retval.Append("}");
return retval.ToString();
}
catch (Exception ex)
{
throw new Exception("Error processing point buffer", ex);
}
}
private static string processPointBuffer(PointShapeBuffer buffer)
{
string retval = "POINT ({0})";
bool hasZ = false;
try
{
hasZ = (buffer.Z != null);
}
catch
{
hasZ = false;
}
string coord = hasZ ? getCoordinate(buffer.point.x, buffer.point.y, buffer.Z) : getCoordinate(buffer.point.x, buffer.point.y);
retval += string.Format(retval, coord);
return retval;
}
