public static void CreateLineFeature(IFeatureLayer featureLayer, IPolyline polyline)
{
try
{
bool hasZ = FeatureClassUtil.CheckHasZ(featureLayer.FeatureClass);
bool hasM = FeatureClassUtil.CheckHasM(featureLayer.FeatureClass);
IPointCollection pointCollection = polyline as IPointCollection;
if (pointCollection == null)
{
return;
}
for (int i = 1; i < pointCollection.PointCount; i++)
{
IPoint fromPoint = pointCollection.Point[i - 1];
IPoint toPoint = pointCollection.Point[i];
IFeature feature = featureLayer.FeatureClass.CreateFeature();
feature.Shape = GeometryHelper.CreatePointCollection(fromPoint, toPoint, hasZ, hasM) as IPolyline;
feature.Store();
}
}
catch (Exception exception)
{
throw new Exception(exception.Message);
}
}
public static void CreatePointFeatures(IFeatureLayer featureLayer, IPolyline polyline, bool hasFromPoint, bool hasTurningPoint, bool hasToPoint)
{
try
{
bool hasZ = FeatureClassUtil.CheckHasZ(featureLayer.FeatureClass);
bool hasM = FeatureClassUtil.CheckHasM(featureLayer.FeatureClass);
IPointCollection pointCollection = polyline as IPointCollection;
if (pointCollection == null)
{
return;
}
for (int i = 0; i < pointCollection.PointCount; i++)
{
if (hasFromPoint == false && i == 0)
{
continue;
}
if (hasTurningPoint == false && i > 0 && i < pointCollection.PointCount - 1)
{
continue;
}
if (hasToPoint == false && i == pointCollection.PointCount - 1)
{
continue;
}
IPoint point = pointCollection.Point[i];
IFeature feature = featureLayer.FeatureClass.CreateFeature();
feature.Shape = GeometryHelper.CreatePoint(point.X, point.Y,
point.Z, point.M, hasZ, hasM);
feature.Store();
}
}
catch (Exception exception)
{
throw new Exception(exception.Message);
}
}
public static IFeature CutOffPolylineByPoint(IFeatureClass featureClass, IFeature polylineFeature,
IFeature pointFeature, string keyValue, string sKeyValue, string eKeyValue)
{
int idxKeyField = pointFeature.Fields.FindField(keyValue);
int idxSKeyField = polylineFeature.Fields.FindField(sKeyValue);
int idxEKeyField = polylineFeature.Fields.FindField(eKeyValue);
if (idxKeyField == -1 || idxSKeyField == -1 || idxEKeyField == -1)
{
return(null);
}
bool hasZ = FeatureClassUtil.CheckHasZ(featureClass);
bool hasM = FeatureClassUtil.CheckHasM(featureClass);
IPoint point = pointFeature.Shape as IPoint;
if (point == null)
{
return(null);
}
IPolyline polyline1 = polylineFeature.ShapeCopy as IPolyline;
if (polyline1 == null)
{
return(null);
}
IPolyline firstPolyline = new PolylineClass
{
FromPoint = GeometryHelper.CreatePoint(polyline1.FromPoint.X, polyline1.FromPoint.Y, polyline1.FromPoint.Z, polyline1.FromPoint.M, hasZ, hasM),
ToPoint = GeometryHelper.CreatePoint(point.X, point.Y, point.Z, point.M, hasZ, hasM)
};
if (hasZ)
{
IZAware pZAware = firstPolyline as IZAware;
pZAware.ZAware = true;
}
if (hasM)
{
IMAware pMAware = firstPolyline as IMAware;
pMAware.MAware = true;
}
polylineFeature.Shape = firstPolyline;
polylineFeature.Store();
IFeature secondFeature = featureClass.CreateFeature();
IPolyline secondPolyline = new PolylineClass
{
FromPoint = GeometryHelper.CreatePoint(point.X, point.Y, point.Z, point.M, hasZ, hasM),
ToPoint = GeometryHelper.CreatePoint(polyline1.ToPoint.X, polyline1.ToPoint.Y, polyline1.ToPoint.Z, polyline1.ToPoint.M, hasZ, hasM),
};
if (hasZ)
{
IZAware pZAware = secondPolyline as IZAware;
pZAware.ZAware = true;
}
if (hasM)
{
IMAware pMAware = secondPolyline as IMAware;
pMAware.MAware = true;
}
secondFeature.Shape = secondPolyline;
IField pField;
for (int i = 0; i < featureClass.Fields.FieldCount; i++)
{
pField = featureClass.Fields.Field[i];
if (pField.Type == esriFieldType.esriFieldTypeGeometry)
{
continue;
}
int idx = secondFeature.Fields.FindField(pField.Name);
if (pField.Editable && idx != -1)
{
secondFeature.Value[idx] = polylineFeature.Value[idx];
}
}
secondFeature.Store();
polylineFeature.Value[idxEKeyField] = pointFeature.Value[idxKeyField];
polylineFeature.Store();
secondFeature.Value[idxSKeyField] = pointFeature.Value[idxKeyField];
secondFeature.Store();
return(secondFeature);
}