/// <summary>
/// Converts an Esri enumerable interface to a DotNet IEnumerable.
/// </summary>
/// <param name="esriEnum">An enumerable Esri interface.</param>
/// <returns>The adapted dotnet enumeration.</returns>
public static IEnumerable <IPoint> Enumerate(this IEnumVertex esriEnum)
{
IPoint point;
int partIndex;
int vertexIndex;
esriEnum.Reset();
esriEnum.Next(out point, out partIndex, out vertexIndex);
while (point != null)
{
yield return(point);
esriEnum.Next(out point, out partIndex, out vertexIndex);
}
}
static private IPoint nextPoint(IEnumVertex vertices, out int partIndex, out int vertexIndex)
{
IPoint p;
vertices.Next(out p, out partIndex, out vertexIndex);
return(p);
}
/// <summary>
/// INTERPOLATE ELEVATION VALUES FOR VERTICES
/// </summary>
/// <param name="analysisSurface">Analysis surface</param>
/// <param name="vertices">Enumeration of vertices</param>
internal static void InterpolateVertices(AnalysisSurface analysisSurface, IEnumVertex vertices)
{
// RESET ENUM
vertices.Reset();
// ITERATE VERTICES
IPoint outVertex;
int partIndex;
int vertexIndex;
vertices.Next(out outVertex, out partIndex, out vertexIndex);
while (outVertex != null)
{
// GET ELEVATION AT POINT LOCATION
double elev = Helper.GetSurfaceElevation(analysisSurface, outVertex);
// ASSIGN Z USING ELEVATION
outVertex.Z = elev;
// GET NEXT VERTEX
vertices.Next(out outVertex, out partIndex, out vertexIndex);
}
}
private static IPoint nextPoint(IEnumVertex vertices, out int partIndex, out int vertexIndex)
{
IPoint p;
vertices.Next(out p, out partIndex, out vertexIndex);
return p;
}
// Execute: Execute the function given the array of the parameters
public void Execute(IArray paramvalues, ITrackCancel trackcancel, IGPEnvironmentManager envMgr, IGPMessages message)
{
IFeatureClass outputFeatureClass = null;
try
{
// get the input feature class
IGPMultiValue inputFeatureClasses_Parameter = (IGPMultiValue)m_GPUtilities.UnpackGPValue(paramvalues.get_Element(0));
layer[] input_featureClasses = new layer[inputFeatureClasses_Parameter.Count];
for (int i = 0; i < inputFeatureClasses_Parameter.Count; i++)
{
IGPValue inputFeatureClass_Parameter = inputFeatureClasses_Parameter.get_Value(i);
IFeatureClass inputFeatureClass;
IQueryFilter inputQF;
m_GPUtilities.DecodeFeatureLayer(inputFeatureClass_Parameter, out inputFeatureClass, out inputQF);
input_featureClasses[i] = new layer()
{
featureclass = inputFeatureClass, qFilter = inputQF
};
}
if (input_featureClasses.Length == 0 || input_featureClasses.Any(w => w.featureclass == null))
{
message.AddError(2, "Could not open one or more input dataset.");
return;
}
//IFields additionalFields = new FieldsClass();
//additionalFields.AddField(FEATURE_SOURCE_FIELD_NAME, esriFieldType.esriFieldTypeString);
//additionalFields.AddField(FEATURE_ID_FIELD_NAME, esriFieldType.esriFieldTypeInteger);
//additionalFields.AddField(
// input_featureClasses[0].featureclass.Fields.get_Field(
// input_featureClasses[0].featureclass.Fields.FindField(
// input_featureClasses[0].featureclass.ShapeFieldName)));
// create the output feature class
IGPValue outputFeatureClass_Parameter = m_GPUtilities.UnpackGPValue(paramvalues.get_Element(1));
outputFeatureClass = GPHelperFunctions.CreateFeatureClass(outputFeatureClass_Parameter, envMgr);
if (outputFeatureClass == null)
{
message.AddError(2, "Could not create output dataset.");
return;
}
IGPString curveTypeParameter = (IGPString)m_GPUtilities.UnpackGPValue(paramvalues.get_Element(2));
ArcConstructionMethods method;
if (!Enum.TryParse <ArcConstructionMethods>(curveTypeParameter.Value, true, out method))
{
message.AddError(2, string.Format("The value {0} is not expected. Expected values are: {1}.",
curveTypeParameter.Value,
string.Join(",", Enum.GetNames(typeof(ArcConstructionMethods)))));
return;
}
IStepProgressor stepPro = (IStepProgressor)trackcancel;
GPHelperFunctions.dropSpatialIndex(outputFeatureClass);
BoostVoronoi bv = new BoostVoronoi(100);
double minX = int.MaxValue, minY = int.MaxValue, maxX = int.MinValue, maxY = int.MinValue;
List <site_key> point_sites = new List <site_key>();
List <site_key> segment_sites = new List <site_key>();
for (short i = 0; i < input_featureClasses.Length; i++)
{
layer l = input_featureClasses[i];
int featcount = l.featureclass.FeatureCount(l.qFilter);
stepPro.MinRange = 0;
stepPro.MaxRange = featcount;
stepPro.StepValue = (1);
stepPro.Message = "Reading features";
stepPro.Position = 0;
stepPro.Show();
IFeatureCursor cursor = null;
IFeature row = null;
try
{
cursor = l.featureclass.Search(l.qFilter, false);
while ((row = cursor.NextFeature()) != null)
{
stepPro.Step();
IPoint point = row.Shape as IPoint;
if (point != null)
{
double X = point.X;
double Y = point.Y;
minX = Math.Min(minX, X);
maxX = Math.Max(maxX, X);
minY = Math.Min(minY, Y);
maxY = Math.Max(maxY, Y);
bv.AddPoint(point.X, point.Y);
point_sites.Add(new site_key(i, row.OID));
}
IMultipoint multipoint = row.Shape as IMultipoint;
if (multipoint != null)
{
IPointCollection pointCollection = (IPointCollection)multipoint;
IEnumVertex vertices = pointCollection.EnumVertices;
IPoint vertex = null; int part, index;
vertices.Next(out vertex, out part, out index);
minX = Math.Min(minX, multipoint.Envelope.XMin);
maxX = Math.Max(maxX, multipoint.Envelope.XMax);
minY = Math.Min(minY, multipoint.Envelope.YMin);
maxY = Math.Max(maxY, multipoint.Envelope.YMax);
while (vertex != null)
{
bv.AddPoint(vertex.X, vertex.Y);
point_sites.Add(new site_key(i, row.OID));
vertices.Next(out vertex, out part, out index);
}
}
IPolyline polyline = row.Shape as IPolyline;
if (polyline != null)
{
double fromX = polyline.FromPoint.X;
double fromY = polyline.FromPoint.Y;
double toX = polyline.ToPoint.X;
double toY = polyline.ToPoint.Y;
if (toX < fromX)
{
minX = Math.Min(minX, toX);
maxX = Math.Max(maxX, fromX);
}
else
{
minX = Math.Min(minX, fromX);
maxX = Math.Max(maxX, toX);
}
if (toY < fromY)
{
minY = Math.Min(minY, toY);
maxY = Math.Max(maxY, fromY);
}
else
{
minY = Math.Min(minY, fromY);
maxY = Math.Max(maxY, toY);
}
bv.AddSegment(
polyline.FromPoint.X, polyline.FromPoint.Y,
polyline.ToPoint.X, polyline.ToPoint.Y
);
segment_sites.Add(new site_key(i, row.OID));
}
Marshal.ReleaseComObject(row);
}
}
finally
{
if (row != null)
{
Marshal.ReleaseComObject(row);
}
if (cursor != null)
{
Marshal.ReleaseComObject(cursor);
}
stepPro.Hide();
}
}
message.AddMessage(String.Format("{0}, {1} -> {2}, {3}", minX, minY, maxX, maxY));
int width = Math.Max((int)((maxX - minX) * 0.1), 1);
int height = Math.Max((int)((maxY - minY) * 0.1), 1);
maxX = maxX + width;
minX = minX - width;
maxY = maxY + height;
minY = minY - height;
message.AddMessage(String.Format("{0}, {1} -> {2}, {3}", minX, minY, maxX, maxY));
bv.AddSegment(minX, minY, maxX, minY);
segment_sites.Add(new site_key(-1, -1));
bv.AddSegment(maxX, minY, maxX, maxY);
segment_sites.Add(new site_key(-1, -1));
bv.AddSegment(maxX, maxY, minX, maxY);
segment_sites.Add(new site_key(-1, -1));
bv.AddSegment(minX, maxY, minX, minY);
segment_sites.Add(new site_key(-1, -1));
stepPro.Message = "Solve Voronoi";
stepPro.MaxRange = 0;
stepPro.MaxRange = 0;
stepPro.Show();
bv.Construct();
stepPro.Hide();
int featureSourceIndx = outputFeatureClass.Fields.FindField(FEATURE_SOURCE_FIELD_NAME);
int featureIDIndx = outputFeatureClass.Fields.FindField(FEATURE_ID_FIELD_NAME);
IFeatureCursor inserts = null;
IFeatureBuffer buffer = null;
try
{
object missing = Type.Missing;
ISpatialReference spatialReference = ((IGeoDataset)outputFeatureClass).SpatialReference;
inserts = outputFeatureClass.Insert(false);
buffer = outputFeatureClass.CreateFeatureBuffer();
List <Cell> cells = bv.Cells;
message.AddMessage(string.Format("{0} cells calculated", cells.Count));
List <Edge> edges = bv.Edges;
message.AddMessage(string.Format("{0} edges calculated", edges.Count));
List <Vertex> vertices = bv.Vertices;
message.AddMessage(string.Format("{0} vertexes calculated", vertices.Count));
stepPro.Message = "Write cells";
stepPro.MaxRange = 0;
stepPro.MaxRange = cells.Count;
stepPro.Show();
for (int cellIndex = 0; cellIndex < cells.Count; cellIndex++)
{
try
{
if (cellIndex % 5000 == 0)
{
message.AddMessage(String.Format("{0}. {1} cells processed.", DateTime.Now, cellIndex));
}
Cell cell = cells[cellIndex];
int currentSite = cell.Site;
IGeometryCollection geometryCollection = new GeometryBagClass()
{
SpatialReference = spatialReference
};
//ignores any sliver cells
if (cell.IsOpen || cell.EdgesIndex.Count < 3)
{
continue;
}
ISegmentCollection segmentCollection = createSegments(cell, bv, method, spatialReference);
if (((IArea)segmentCollection).Area <= 0)
{
message.AddMessage("A invalid geometry has been detected, try reversing the orientation.");
ISegmentCollection reversed_segmentCollection = new PolygonClass()
{
SpatialReference = spatialReference
};
for (int i = segmentCollection.SegmentCount - 1; i >= 0; i--)
{
ISegment segment = (ISegment)segmentCollection.get_Segment(i);
segment.ReverseOrientation();
reversed_segmentCollection.AddSegment(segment);
}
segmentCollection = reversed_segmentCollection;
}
((IPolygon)segmentCollection).SpatialReference = spatialReference;
if (((IArea)segmentCollection).Area <= 0)
{
message.AddWarning("An empty shell has been created");
for (int i = 0; i < segmentCollection.SegmentCount; i++)
{
ISegment segment = (ISegment)segmentCollection.get_Segment(i);
message.AddMessage(String.Format("From {0}, {1} To {2},{3}",
segment.FromPoint.X, segment.FromPoint.Y,
segment.ToPoint.X, segment.ToPoint.Y));
}
}
//set attributes
site_key sk = (currentSite >= point_sites.Count) ? segment_sites[currentSite - point_sites.Count] : point_sites[currentSite];
if (!sk.isEmpty)
{
buffer.set_Value(featureSourceIndx, input_featureClasses[sk.featureClassIndex].featureclass.AliasName);
buffer.set_Value(featureIDIndx, sk.objectID);
}
else
{
buffer.set_Value(featureSourceIndx, DBNull.Value);
buffer.set_Value(featureIDIndx, DBNull.Value);
}
IPolygon voronoiPolygon = (IPolygon)segmentCollection;
buffer.Shape = (IPolygon)voronoiPolygon;
inserts.InsertFeature(buffer);
}
catch (Exception e)
{
message.AddWarning("Failed to create a cell");
}
}
}
finally
{
if (buffer != null)
{
Marshal.ReleaseComObject(buffer);
}
if (inserts != null)
{
Marshal.ReleaseComObject(inserts);
}
}
GPHelperFunctions.createSpatialIndex(outputFeatureClass);
}
catch (Exception exx)
{
message.AddError(2, exx.Message);
message.AddMessage(exx.ToString());
}
finally
{
if (outputFeatureClass != null)
{
Marshal.ReleaseComObject(outputFeatureClass);
}
((IProgressor)trackcancel).Hide();
}
}
private void processPolygonLayer(LayerProperties layerProps, geFolder folder)
{
//I have a polygon layer, and a kml folder :)
IFeatureClass clasa = (layerProps.Layeru as IFeatureLayer).FeatureClass;
//get acces to features
IFeatureCursor featurele = clasa.Search(null, true);
int nrFeature = clasa.FeatureCount(null);
//if I have any features
Polygon poligon;
IFeature currentFeature;
while ((currentFeature = featurele.NextFeature()) != null)
{
poligon = currentFeature.Shape as Polygon;
//coordinates and vertices
double coordLat;
double coordLong;
IEnumVertex colection = poligon.EnumVertices;
IPoint polyVertex;
//create coord system WGS 84 (Google earth)
IGeographicCoordinateSystem gcs;
SpatialReferenceEnvironment sre = new SpatialReferenceEnvironment();
gcs = sre.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);
//create spatial reference
ISpatialReference pointToSpatialReference;
pointToSpatialReference = gcs;
#region add points to polygon
//create a placemark for the line
gePlacemark pmPolygon = new gePlacemark();
pmPolygon.StyleUrl = "#Shape2KMLGeneratedStyle";
List <geCoordinates> polyCoords = new List <geCoordinates>();
int index1, index2;
//iterate points...
while (!colection.IsLastInPart())
{
//create polygon from vertices
colection.Next(out polyVertex, out index1, out index2);
//project point and get coordinates
polyVertex.Project(pointToSpatialReference);
polyVertex.QueryCoords(out coordLong, out coordLat);
//add point to line
try
{
//create points for polygon based on altitude mode.
switch (layerProps.AltitudeMode)
{
case AltitudeMode.absolute:
if (layerProps.Field == "")
{
//add point to line
polyCoords.Add(new geCoordinates(new geAngle90(coordLat), new geAngle180(coordLong), layerProps.Altitude));
}
else
{
int altitude;
//if altitude is integer, this should work
altitude = (int)currentFeature.get_Value(currentFeature.Fields.FindField(layerProps.Field));
//add point to line
polyCoords.Add(new geCoordinates(new geAngle90(coordLat), new geAngle180(coordLong), layerProps.Multiplier * altitude));
}
break;
case AltitudeMode.clampToGround:
//add point to line
polyCoords.Add(new geCoordinates(new geAngle90(coordLat), new geAngle180(coordLong)));
break;
case AltitudeMode.relativeToGround:
if (layerProps.Field == "")
{
//add point to line
polyCoords.Add(new geCoordinates(new geAngle90(coordLat), new geAngle180(coordLong), layerProps.Altitude));
}
else
{
float altitude;
//if altitude is integer, this should work
altitude = (float)currentFeature.get_Value(currentFeature.Fields.FindField(layerProps.Field));
//add point to line
polyCoords.Add(new geCoordinates(new geAngle90(coordLat), new geAngle180(coordLong), layerProps.Multiplier * altitude));
}
break;
default:
break;
}
}
catch (Exception)
{
MessageBox.Show("Altitude field is not a number value");
break;
}
}
//create line from list of coords
geOuterBoundaryIs outer = new geOuterBoundaryIs(new geLinearRing(polyCoords));
gePolygon poly = new gePolygon(outer);
//and add it to document
switch (layerProps.AltitudeMode)
{
//set altitude mode...
case AltitudeMode.absolute:
poly.AltitudeMode = geAltitudeModeEnum.absolute;
break;
case AltitudeMode.clampToGround:
poly.AltitudeMode = geAltitudeModeEnum.clampToGround;
break;
case AltitudeMode.relativeToGround:
poly.AltitudeMode = geAltitudeModeEnum.relativeToGround;
break;
default:
break;
}
if (layerProps.DescField != "")
{
pmPolygon.Description = currentFeature.get_Value(currentFeature.Fields.FindField(layerProps.DescField)).ToString();
}
if (layerProps.NameField != "")
{
pmPolygon.Name = currentFeature.get_Value(currentFeature.Fields.FindField(layerProps.NameField)).ToString();
}
pmPolygon.Geometry = poly;
folder.Features.Add(pmPolygon);
#endregion
}
}
private int CheckZRange([NotNull] IFeature feature,
[NotNull] IPointCollection points)
{
IEnumVertex enumPoints = points.EnumVertices;
enumPoints.Reset();
var errorPointsBelow = new List <IPoint>();
var errorPointsAbove = new List <IPoint>();
IPoint currentPoint;
int partIndex;
int segmentIndex;
enumPoints.Next(out currentPoint, out partIndex, out segmentIndex);
double zMax = double.MinValue;
double zMin = double.MaxValue;
while (currentPoint != null)
{
double z = currentPoint.Z;
if (!IsAllowed(z))
{
if (z < _minimumZValue)
{
errorPointsBelow.Add(GeometryFactory.Clone(currentPoint));
}
else if (z > _maximumZValue)
{
errorPointsAbove.Add(GeometryFactory.Clone(currentPoint));
}
if (z < zMin)
{
zMin = z;
}
else if (z > zMax)
{
zMax = z;
}
}
enumPoints.Next(out currentPoint, out partIndex, out segmentIndex);
}
var errorCount = 0;
if (errorPointsBelow.Count > 0)
{
errorCount += ReportError(GetErrorMessageBelow(errorPointsBelow, zMin),
GetErrorGeometry(errorPointsBelow),
null, _shapeFieldName,
(IRow)feature);
}
if (errorPointsAbove.Count > 0)
{
string message = GetErrorMessageAbove(errorPointsAbove, zMax);
errorCount += ReportError(message,
GetErrorGeometry(errorPointsAbove),
null, _shapeFieldName,
(IRow)feature);
}
return(errorCount);
}