Set non rectangular crop shape

[MiguelGT17]

Greetings to everybody,

I have a problem with the crop shape, I wish to create floorplans and set the crop shape as this sample:

but eventually Revit throws an exception that says that I can not associate non-rectangular shapes with the view.

Is it for real, I'm not be able to set those shapes through the API ? or is it that anything is wrong with my code:

					//method 2: get the room solid and use the bottom face boundary
					SpatialElementGeometryCalculator cal = new SpatialElementGeometryCalculator(doc,sebOp);
					SpatialElementGeometryResults results = cal.CalculateSpatialElementGeometry(room);
					Solid roomSolid2 = results.GetGeometry();
					foreach (Face face in roomSolid2.Faces) {
						PlanarFace plFace = face as PlanarFace;
						if (plFace != null) {
							XYZ normalFace = plFace.FaceNormal;
							if (normalFace.Z == -1) {
								roomBoundary = plFace.GetEdgesAsCurveLoops()[0];
								
								break;
							}
						}
					}
					
					//set the crop layout
					ViewCropRegionShapeManager cropManager = vplan.GetCropRegionShapeManager();
					if (roomBoundary != null) {
						cropManager.SetCropShape(roomBoundary);
					}

best regards,

Miguel G.

[jeremy_tammik]

The GetEdgesAsCurveLoops method return value is IList<CurveLoop>.

The input argument to the SetCropShape method is a single CurveLoop boundary, not an ILIst.

Does that help?

[MiguelGT17]

Actually, I'm requesting the first curve loop out of the Ilist<Curvelopp> returned by the GetEdgesAsCurveLoops().

In another note, I've even tried to set rectangular crop shapes:

					//method 3: set rectangular shape					
					SpatialElementGeometryCalculator cal = new SpatialElementGeometryCalculator(doc,sebOp);
					SpatialElementGeometryResults results = cal.CalculateSpatialElementGeometry(room);
					Solid roomSolid2 = results.GetGeometry();
					
					List<double> xcoord = new List<double>();
					List<double> ycoord = new List<double>();
					List<double> zcoord = new List<double>();
					
					foreach (Face face in roomSolid2.Faces) {
						PlanarFace plFace = face as PlanarFace;
						if (plFace != null) {
							XYZ normalFace = plFace.FaceNormal;
							if (normalFace.Z == -1) {
								roomBoundary = plFace.GetEdgesAsCurveLoops()[0];
								
								foreach (Curve curve in roomBoundary) {
									Line line = curve as Line;
									if (line != null) {
										xcoord.Add(line.GetEndPoint(0).X);
										xcoord.Add(line.GetEndPoint(1).X);
										ycoord.Add(line.GetEndPoint(0).Y);
										ycoord.Add(line.GetEndPoint(1).Y);
										zcoord.Add(line.GetEndPoint(0).Z);
										zcoord.Add(line.GetEndPoint(1).Z);
									}
								}
								
								break;
							}
						}
					}
					IList<Curve> curves = new List<Curve>();
					XYZ minPt = new XYZ(xcoord.Min(),ycoord.Min(),zcoord.Min());
					XYZ maxPt = new XYZ(xcoord.Max(),ycoord.Max(),zcoord.Min());
					
					Line lineA = Line.CreateBound(minPt,new XYZ(minPt.X,maxPt.Y,minPt.Z));
					Line lineB = Line.CreateBound(new XYZ(minPt.X,maxPt.Y,minPt.Z), maxPt);
					Line lineC = Line.CreateBound(maxPt,new XYZ(maxPt.X,minPt.Y,minPt.Z));
					Line lineD = Line.CreateBound(new XYZ(maxPt.X,minPt.Y,minPt.Z), minPt);
					
					curves.Add(lineA);
					curves.Add(lineB);
					curves.Add(lineC);
					curves.Add(lineD);
					roomBoundary = CurveLoop.Create(curves);
					
					//set the crop layout
					ViewCropRegionShapeManager cropManager = vplan.GetCropRegionShapeManager();
					if (roomBoundary != null) {
						cropManager.SetCropShape(roomBoundary);
					}

and I still having the same error:

any clarifications on how to set the view crop shape properly?

All the best,

[MiguelGT17 · Accepted solution]

Hey @jeremy_tammik I solved this issue, I though the view template already set the CropBoxActive and CropBoxVisible as true values

					//set view template Id
					vplan.ViewTemplateId = walksheetVtemplate.Id;

but I guess it's not the case. Since I added these line of code:

					vplan.CropBoxActive = true;
					vplan.CropBoxVisible = true;

before setting the crop shape, it's working fine.

Now I'm moving forward with Elevation view for each room, probably you going to hear from me again

All the best,

Miguel G.

[jeremy_tammik]

Oh yes, sorry, I overlooked the [0].

Can you provide a minimal reproducible case to share with the development team?

Ah, maybe, no, first, please take a look at this blog post and the repository and discussion threads it summarises:

• GitHub: http://jeremytammik.github.io/tbc/a/1807_createviaoffset.html#3
• Typepad: https://thebuildingcoder.typepad.com/blog/2019/12/dashboards-createviaoffset-and-room-outline-algori...

As far as I can tell offhand, it describes a successful use of this method.