public override List <IActivityData> Process()
{
IDatasetElement sElement = base.SourceDatasetElement;
IFeatureClass sFc = base.SourceFeatureClass;
ActivityBase.TargetDatasetElement tElement = base.TargetDatasetElement;
IDataset tDs = base.TargetDataset;
//IFeatureDatabase tDatabase = base.TargetFeatureDatabase;
GeometryDef geomDef = new GeometryDef(
geometryType.Polyline,
null,
false);
IFeatureClass tFc = base.CreateTargetFeatureclass(geomDef, sFc.Fields);
IFeatureDatabase tDatabase = FeatureDatabase(tFc);
Report.featureMax = sFc.CountFeatures;
Report.featurePos = 0;
ReportProgess("Query Filter: " + SourceData.FilterClause);
Nodes nodes = new Nodes();
using (IFeatureCursor cursor = SourceData.GetFeatures(String.Empty))
{
if (cursor == null)
{
return(null);
}
IFeature feature;
while ((feature = cursor.NextFeature) != null)
{
if (Report.featurePos++ % 100 == 0)
{
ReportProgess();
}
if (feature.Shape is IPoint)
{
nodes.Add((IPoint)feature.Shape);
}
}
}
VoronoiGraph voronoi = new VoronoiGraph();
voronoi.ProgressMessage += new VoronoiGraph.ProgressMessageEventHandler(voronoi_ProgressMessage);
voronoi.Progress += new VoronoiGraph.ProgressEventHandler(voronoi_Progress);
voronoi.Calc(nodes);
List <IPoint> vertices = voronoi.Nodes;
Edges edges = voronoi.Edges;
ReportProgess("Write Lines");
Report.featurePos = 0;
List <IFeature> features = new List <IFeature>();
foreach (Edge edge in edges)
{
Polyline pLine = new Polyline();
Path path = new Path();
path.AddPoint(vertices[edge.p1]);
path.AddPoint(vertices[edge.p2]);
pLine.AddPath(path);
Feature feature = new Feature();
feature.Shape = pLine;
features.Add(feature);
Report.featurePos++;
if (features.Count >= 100)
{
if (!tDatabase.Insert(tFc, features))
{
throw new Exception(tDatabase.lastErrorMsg);
}
features.Clear();
ReportProgess();
}
}
if (features.Count > 0)
{
ReportProgess();
if (!tDatabase.Insert(tFc, features))
{
throw new Exception(tDatabase.lastErrorMsg);
}
}
ReportProgess("Flush Features");
base.FlushFeatureClass(tFc);
return(base.ToProcessResult(tFc));
}
