private static string processMultiPartBuffer(MultiPartShapeBuffer buffer, string geoJsonType)
{
try
{
List<string> delims = getMultipartDelimiter(geoJsonType);
bool hasZ = false;
try
{
hasZ = (buffer.Zs != null);
}
catch
{
hasZ = false;
}
StringBuilder retval = new StringBuilder("{\"type\":\"" + geoJsonType + "\", \"coordinates\": [");
int numPts = buffer.NumPoints;
int numParts = buffer.NumParts;
int[] parts = buffer.Parts;
Point[] points = buffer.Points;
List<string> coords = new List<string>();
List<string> polys = new List<string>();
int partCount = 0;
for (int i = 0; i < numPts; i++)
{
if ((partCount < numParts) && (i == parts[partCount]))
{
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
coords = new List<string>();
partCount++;
}
string coord = hasZ ? getCoordinate(points[i].x, points[i].y, buffer.Zs[i]) : getCoordinate(points[i].x, points[i].y);
coords.Add(coord);
}
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
string[] polyArray = polys.ToArray();
string polyList = string.Join(",", polyArray);
retval.Append(polyList);
retval.Append("]}");
return retval.ToString();
}
catch (Exception ex)
{
throw new Exception("Error processing multipart buffer", ex);
}
}
private static string processMultiPartBuffer(MultiPartShapeBuffer buffer, string wktType)
{
try
{
List <string> delims = getMultipartDelimiter(wktType);
bool hasZ = false;
try
{
hasZ = (buffer.Zs != null);
}
catch
{
hasZ = false;
}
string retval = wktType + "({0})";
int numPts = buffer.NumPoints;
int numParts = buffer.NumParts;
int[] parts = buffer.Parts;
Point[] points = buffer.Points;
List <string> coords = new List <string>();
List <string> polys = new List <string>();
int partCount = 0;
for (int i = 0; i < numPts; i++)
{
if ((partCount < numParts) && (i == parts[partCount]))
{
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
coords = new List <string>();
partCount++;
}
string coord = hasZ ? getCoordinate(points[i].x, points[i].y, buffer.Zs[i]) : getCoordinate(points[i].x, points[i].y);
coords.Add(coord);
}
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
string[] polyArray = polys.ToArray();
string polyList = string.Join(",", polyArray);
retval = string.Format(retval, polyList);
return(retval);
}
catch (Exception ex)
{
throw new Exception("Error processing multipart buffer", ex);
}
}
private static string processMultiPartBuffer(MultiPartShapeBuffer buffer, string wktType)
{
List<string> delims = getMultipartDelimiter(wktType);
bool hasZ = false;
try
{
hasZ = (buffer.Zs != null);
}
catch
{
hasZ = false;
}
string retval = wktType + "({0})";
int numPts = buffer.NumPoints;
int numParts = buffer.NumParts;
int[] parts = buffer.Parts;
Point[] points = buffer.Points;
List<string> coords = new List<string>();
List<string> polys = new List<string>();
int partCount = 0;
for (int i = 0; i < numPts; i++)
{
if ((partCount < numParts) && (i == parts[partCount]))
{
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
coords = new List<string>();
partCount++;
}
string coord = hasZ ? getCoordinate(points[i].x, points[i].y, buffer.Zs[i]) : getCoordinate(points[i].x, points[i].y);
coords.Add(coord);
}
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
string[] polyArray = polys.ToArray();
string polyList = string.Join(",", polyArray);
retval = string.Format(retval, polyList);
return retval;
}
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 IMultiParts ToGeneralMultiPart(MultiPartShapeBuffer multiPart, GeometryType geometryType)
{
IMultiParts multiParts;
if (geometryType == GeometryType.Polyline)
{
multiParts = new GeometryFactory().CreatePolyline();
}
else
{
multiParts = new GeometryFactory().CreatePolygon();
}
var rings = multiParts.Parts;
for (var i = 0; i < multiPart.NumParts; i++)
{
var partStart = multiPart.Parts[i];
int partEnd;
if (i + 1 < multiPart.NumParts)
{
partEnd = multiPart.Parts[i + 1];
}
else
{
partEnd = multiPart.NumPoints - 1;
}
var linearRing = new GeometryFactory().CreateLineString();
var points = linearRing.Vertices;
for (var j = partStart; j <= partEnd; j++)
{
var mapPoint = new GeometryFactory().CreatePoint(multiPart.Points[i].x, multiPart.Points[i].y);
points.Add(mapPoint);
}
rings.Add(linearRing);
}
return(multiParts);
}
private static IMultiParts ToGeneralMultiPart(MultiPartShapeBuffer multiPart, GeometryType geometryType)
{
IMultiParts multiParts;
if (geometryType == GeometryType.Polyline)
{
multiParts = new GeometryFactory().CreatePolyline();
}
else
{
multiParts = new GeometryFactory().CreatePolygon();
}
var rings = multiParts.Parts;
for (var i = 0; i < multiPart.NumParts; i++)
{
var partStart = multiPart.Parts[i];
int partEnd;
if (i + 1 < multiPart.NumParts)
{
partEnd = multiPart.Parts[i + 1];
}
else
{
partEnd = multiPart.NumPoints - 1;
}
var linearRing = new GeometryFactory().CreateLineString();
var points = linearRing.Vertices;
for (var j = partStart; j <= partEnd; j++)
{
var mapPoint = new GeometryFactory().CreatePoint(multiPart.Points[i].x, multiPart.Points[i].y);
points.Add(mapPoint);
}
rings.Add(linearRing);
}
return multiParts;
}
private static string processMultiPartBuffer(MultiPartShapeBuffer buffer, string geoJsonType)
{
List<string> delims = getMultipartDelimiter(geoJsonType);
string retval = "{\"type\":\"" + geoJsonType + "\", \"coordinates\": [";
int numPts = buffer.NumPoints;
int numParts = buffer.NumParts;
int[] parts = buffer.Parts;
Point[] points = buffer.Points;
List<string> coords = new List<string>();
List<string> polys = new List<string>();
int partCount = 0;
for (int i = 0; i < numPts; i++)
{
if ((partCount < numParts) && (i == parts[partCount]))
{
if (coords.Count > 0)
{
string [] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
coords = new List<string>();
partCount++;
}
string coord = getCoordinate(points[i].x, points[i].y);
coords.Add(getCoordinate(points[i].x, points[i].y));
}
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
string[] polyArray = polys.ToArray();
string polyList = string.Join(",", polyArray);
retval += polyList + "]}";
return retval;
}
private static string processMultiPartBuffer(MultiPartShapeBuffer buffer, string geoJsonType)
{
try
{
List<string> delims = getMultipartDelimiter(geoJsonType);
bool hasZ = false;
try
{
hasZ = (buffer.Zs != null);
}
catch
{
hasZ = false;
}
StringBuilder retval = new StringBuilder("{\"type\":\"" + geoJsonType + "\", \"coordinates\": [");
int numPts = buffer.NumPoints;
int numParts = buffer.NumParts;
int[] parts = buffer.Parts;
Point[] points = buffer.Points;
List<string> coords = new List<string>();
List<string> polys = new List<string>();
int partCount = 0;
for (int i = 0; i < numPts; i++)
{
if ((partCount < numParts) && (i == parts[partCount]))
{
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
coords = new List<string>();
partCount++;
}
string coord = hasZ ? getCoordinate(points[i].x, points[i].y, buffer.Zs[i]) : getCoordinate(points[i].x, points[i].y);
coords.Add(coord);
}
if (coords.Count > 0)
{
string[] coordArray = coords.ToArray();
string coordList = string.Join(",", coordArray);
polys.Add(delims[0] + coordList + delims[1]);
}
string[] polyArray = polys.ToArray();
string polyList = string.Join(",", polyArray);
retval.Append(polyList);
retval.Append("]}");
return retval.ToString();
}
catch (Exception ex)
{
throw new Exception("Error processing multipart buffer", ex);
}
}
