/// <summary>
/// Deletes a subregion and all topography surface points it contains.
/// </summary>
/// <param name="uiDoc">The document.</param>
public void DeleteSubregionAndPoints(UIDocument uiDoc)
{
Document doc = uiDoc.Document;
// Select subregion
TopographySurface subregion = SiteUIUtils.PickSubregion(uiDoc);
TopographySurface toposurface = SiteEditingUtils.GetTopographySurfaceHost(subregion);
IList <XYZ> points = SiteEditingUtils.GetNonBoundaryPoints(subregion);
// All changes are added to one transaction group - will create one undo item
using (TransactionGroup deleteGroup = new TransactionGroup(doc, "Delete region"))
{
deleteGroup.Start();
// Edit scope to delete points- if there are points in the region
if (points.Count > 0)
{
using (TopographyEditScope editScope = new TopographyEditScope(doc, "Edit TS"))
{
editScope.Start(toposurface.Id);
// Transaction for point deletion
using (Transaction t = new Transaction(doc, "Delete points"))
{
t.Start();
toposurface.DeletePoints(points);
t.Commit();
}
editScope.Commit(new TopographyEditFailuresPreprocessor());
}
}
// Transaction to delete subregion
using (Transaction t2 = new Transaction(doc, "Delete subregion"))
{
t2.Start();
doc.Delete(subregion.Id);
t2.Commit();
}
deleteGroup.Assimilate();
}
}
/// <summary>
/// Adds a new retaining pond.
/// </summary>
/// <param name="uiDoc">The document.</param>
/// <param name="pondRadius">The radius of the pond.</param>
private void AddNewRetainingPond(UIDocument uiDoc, double pondRadius)
{
Document doc = uiDoc.Document;
// Find toposurfaces
FilteredElementCollector tsCollector = new FilteredElementCollector(doc);
tsCollector.OfClass(typeof(TopographySurface));
IEnumerable <TopographySurface> tsEnumerable = tsCollector.Cast <TopographySurface>().Where <TopographySurface>(ts => !ts.IsSiteSubRegion);
int count = tsEnumerable.Count <TopographySurface>();
// If there is only on surface, use it. If there is more than one, let the user select the target.
TopographySurface targetSurface = null;
if (count > 1) // tmp
{
targetSurface = SiteUIUtils.PickTopographySurface(uiDoc);
}
else
{
targetSurface = tsEnumerable.First <TopographySurface>();
}
// Pick point and project to plane at toposurface average elevation
XYZ point = SiteUIUtils.PickPointNearToposurface(uiDoc, targetSurface, "Pick point for center of pond.");
double elevation = point.Z;
// Add subregion first, so that any previously existing points can be removed to avoid distorting the new region
// Find material "Water"
FilteredElementCollector collector = new FilteredElementCollector(doc);
collector.OfClass(typeof(Material));
Material mat = collector.Cast <Material>().FirstOrDefault <Material>(m => m.Name == "Water");
// Create subregion curves
List <Curve> curves = new List <Curve>();
curves.Add(Arc.Create(point, pondRadius, 0, Math.PI, XYZ.BasisX, XYZ.BasisY));
curves.Add(Arc.Create(point, pondRadius, Math.PI, 2 * Math.PI, XYZ.BasisX, XYZ.BasisY));
CurveLoop curveLoop = CurveLoop.Create(curves);
List <CurveLoop> curveLoops = new List <CurveLoop>();
curveLoops.Add(curveLoop);
// All changes are added to one transaction group - will create one undo item
using (TransactionGroup addGroup = new TransactionGroup(doc, "Add pond group"))
{
addGroup.Start();
IList <XYZ> existingPoints = null;
// Transacton for adding subregion.
using (Transaction t2 = new Transaction(doc, "Add subregion"))
{
t2.Start();
SiteSubRegion region = SiteSubRegion.Create(doc, curveLoops, targetSurface.Id);
if (mat != null)
{
region.TopographySurface.MaterialId = mat.Id;
}
t2.Commit();
// The boundary points for the subregion cannot be deleted, since they are generated
// to represent the subregion boundary rather than representing real points in the host.
// Get non-boundary points only to be deleted.
existingPoints = SiteEditingUtils.GetNonBoundaryPoints(region.TopographySurface);
// Average elevation of all points in the subregion to use as base elevation for the pond topography
elevation = SiteEditingUtils.GetAverageElevation(region.TopographySurface.GetPoints());
}
// Add the topography points to the target surface via edit scope.
using (TopographyEditScope editScope = new TopographyEditScope(doc, "Edit TS"))
{
editScope.Start(targetSurface.Id);
// Transaction for points changes
using (Transaction t = new Transaction(doc, "Add points"))
{
t.Start();
// Delete existing points first to avoid conflict
if (existingPoints.Count > 0)
{
targetSurface.DeletePoints(existingPoints);
}
// Generate list of points to add
IList <XYZ> points = SiteEditingUtils.GeneratePondPointsSurrounding(new XYZ(point.X, point.Y, elevation - 3), pondRadius);
targetSurface.AddPoints(points);
t.Commit();
}
editScope.Commit(new TopographyEditFailuresPreprocessor());
}
addGroup.Assimilate();
}
}
/// <summary>
/// Moves a subregion and the associated topography to a new user-selected location.
/// </summary>
/// <param name="uiDoc">The document.</param>
private void MoveSubregionAndPoints(UIDocument uiDoc)
{
Document doc = uiDoc.Document;
// Pick subregion
TopographySurface subregion = SiteUIUtils.PickSubregion(uiDoc);
TopographySurface toposurface = SiteEditingUtils.GetTopographySurfaceHost(subregion);
IList <XYZ> points = SiteEditingUtils.GetPointsFromSubregionExact(subregion);
XYZ sourceLocation = SiteEditingUtils.GetCenterOf(subregion);
// Pick target location
XYZ targetPoint = SiteUIUtils.PickPointNearToposurface(uiDoc, toposurface, "Pick point to move to");
// Delta for the move
XYZ delta = targetPoint - sourceLocation;
// All changes are added to one transaction group - will create one undo item
using (TransactionGroup moveGroup = new TransactionGroup(doc, "Move subregion and points"))
{
moveGroup.Start();
// Get elevation of region in current location
IList <XYZ> existingPointsInCurrentLocation = subregion.GetPoints();
double existingElevation = SiteEditingUtils.GetAverageElevation(existingPointsInCurrentLocation);
// Move subregion first - allows the command delete existing points and adjust elevation to surroundings
using (Transaction t2 = new Transaction(doc, "Move subregion"))
{
t2.Start();
ElementTransformUtils.MoveElement(doc, subregion.Id, delta);
t2.Commit();
}
// The boundary points for the subregion cannot be deleted, since they are generated
// to represent the subregion boundary rather than representing real points in the host.
// Get non-boundary points only to be deleted.
IList <XYZ> existingPointsInNewLocation = SiteEditingUtils.GetNonBoundaryPoints(subregion);
// Average elevation of all points in the subregion.
double newElevation = SiteEditingUtils.GetAverageElevation(subregion.GetPoints());
// Adjust delta for elevation based on calculated values
delta = SiteEditingUtils.MoveXYZToElevation(delta, newElevation - existingElevation);
// Edit scope for points changes
using (TopographyEditScope editScope = new TopographyEditScope(doc, "Edit TS"))
{
editScope.Start(toposurface.Id);
using (Transaction t = new Transaction(doc, "Move points"))
{
t.Start();
// Delete existing points from target region
if (existingPointsInNewLocation.Count > 0)
{
toposurface.DeletePoints(existingPointsInNewLocation);
}
// Move points from source region
toposurface.MovePoints(points, delta);
t.Commit();
}
editScope.Commit(new TopographyEditFailuresPreprocessor());
}
moveGroup.Assimilate();
}
}
