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3d path sweep

15 ANTWORTEN 15
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Nachricht 1 von 16
Anonymous
4672 Aufrufe, 15 Antworten

3d path sweep

Any progress regarding 3d sweeps in Revit 2016 or is this still not possible? 

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Nachricht 2 von 16
constantin.stroescu
als Antwort auf: Anonymous

What do you mean exactly? The 3d sweep (path) is possible even in previous versions if you use Pick Path > Pick 3D Edges.

For this , you need first, to create a Mass Element as a helper , having in mind that you will use its edges as path for the sweep.:

  • having the Mass Element > Architecture>Component > Model In Place > Generic Models -Name - call it somehow -OK
  • Forms >Sweep
  1. Pick Path > Pick >Pick 3D Edges  -Finish Edit Mode
  2. Select Profile > Edit Profile (or Load a Profile Family)-draw on the normal to path plane defined by a red point and cross reference planes -Finish Edit Mode
  3. Finish Edit Mode

Image 2.png

I've made a rough screencast on this subject:

https://screencast.autodesk.com/main/details/a137dd34-6619-49d2-83ee-054a30c1ec22

Constantin Stroescu

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Nachricht 3 von 16
chrisplyler
als Antwort auf: Anonymous

Constantin really wakes up way too early for me to ever answer before him. But yes, according to the workflow he has described, I present a 3D sweep:

 

3Dsweep.gif

Nachricht 4 von 16
chrisplyler
als Antwort auf: Anonymous

You don't even really have to make a mass first, if you're wanting to sweep along some existing model elements, you can do the same thing. Here's a wacky deformed star sweep along the sloped lines of a roof:

 

3Dsweep2.gif

Nachricht 5 von 16
constantin.stroescu
als Antwort auf: chrisplyler

you are right . You can use any edges as base for the path : wall edges, roof edges  and above all you can use Model Lines placed on different Named Reference Planes , as in the following example:

 https://screencast.autodesk.com/main/details/04220c0d-44e4-4818-af6e-308926707ee8

 

As a conclusion , there are many ways for making a 3d paths...

Constantin Stroescu

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Nachricht 6 von 16
Anonymous
als Antwort auf: constantin.stroescu

So I did a 3d void sweep. The sweep is along a curved roof and the sweep itself has a triangular profile so that the roof has a knife edge (the void sweep cuts the roof edge). My problem is the endpoint. A small triangular portion remains in the end apparently because of the thickness of the roof. So I want to be able to extend my path a little bit beyond the roof end so that it cuts that triangular portion too. And since I picked 3d edges, revit will not let me drag the end point of the sweep path. I tried so many different ways - creating a separate sweep for that little triangle and many other methods but none seems to work.

 

Please see attached images for clarity.

 

Nachricht 7 von 16
Alfredo_Medina
als Antwort auf: Anonymous

Have you tried with Roof > Roof edge ? Or have you tried modeling this as a floor, and then using Floor > Slab edge ?


Alfredo Medina _________________________________________________________________ ______
Licensed Architect (Florida) | Freelance Instructor | Profile on Linkedin
Nachricht 8 von 16
Anonymous
als Antwort auf: Alfredo_Medina

The model element which I used to do the sweep (which itself is just an in-place component) is a roof. So I picked the roof edge.

Nachricht 9 von 16
constantin.stroescu
als Antwort auf: Anonymous

As I understood from your screen captures it seems that the edge of the roof is a curve.

I think the triangle comes from the fact that the roof is Rafter Cut>Plumb Cut and the Sweeped shape is normal on the edge.

The Path can not be extended if the edge is curved, but you can use a trick:

  • Set the Workplane to the upper face of the roof >Pick Plane - select the Roof Upper Face 
  • Draw a Model Line using Pick Lines - this curve allows to be extended 
  • Use this Model Line as Path

Constantin Stroescu

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Nachricht 10 von 16
Anonymous
als Antwort auf: constantin.stroescu

Thanks for your response. I tried setting the work plane to the upper face of the roof but Revit does not pick the upper face at all. I think because the roof is curving in both directions. Please see attached image for clarification. 

 

 

Nachricht 11 von 16
constantin.stroescu
als Antwort auf: Anonymous

 Supposing that you have used Roof by Extrusion,

  • I think the most direct solution is to make a Copy (to Clipboard) of the Roof and then Paste > Aligned to Same Place. The duplicate roof can then, edited ( Edit Profile) by extended the curve...Finally, after obtaining the Path for the sweep this second roof can be deleted.
  • Another way could be using masses - something like that  shown in my screecast:

 

 

 

 

Constantin Stroescu

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Nachricht 12 von 16
Anonymous
als Antwort auf: constantin.stroescu

But to obtain the path from the second roof, wouldn't I have to use model line? And if I use model line it makes the lines at different work planes because I am not able to set my work plane to the roof surface.

Nachricht 13 von 16
constantin.stroescu
als Antwort auf: Anonymous

I suppose you've used a Roof by Extrusion cut by Void , Component Model In Place.....if so, I don't see any problem to increase the void length...

Constantin Stroescu

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Nachricht 14 von 16
ToanDN
als Antwort auf: Anonymous

@Anonymous

 

Can you share the roof model?

Nachricht 15 von 16
Anonymous
als Antwort auf: ToanDN

Please see attached revit file for the roof. The roof was created using the face of a mass and the mass itself was a rhino model brought into a revit family. Unfortunately I am not the author of the rhino model so I cannot share it. 

Nachricht 16 von 16
ToanDN
als Antwort auf: Anonymous

See attached Revit file.

 

- Create a solid sweep similar to your void and export it to DWG (make sure set the DWG export to Solid, not Polymesh)

- Open the DWG in AutoCAD and use Presspull tool to pull the end faces.  Save.

- Go back to Revit, edit the void sweep and delete the existing void.  Import the DWG in and set it to Void.  Use Cut geometry to cut the roof.  Finish edit in place.

 

Capture1.PNG

 

Capture.PNG

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