macro for intersecting a mesh in CATIA V5R19

[margntou]

Hi all,
I have a geometry imported as .stl and I want to intersect it with several planes in order to take the corresponding splines. After importing the file in Digitized shape editor I used the mesh smoothing tool to optimize my geometry. I know that I can use planar sections command and create the splines. The way I prefer is to create the planes that I want and then move to Shape sculpture and use the mesh intersect button from the editing toolbar. My problem is that this command cannot be recorded. What I need is a script that will run the intersect. Does anyone has any ideas of how can I create it?
Thanks a lot

 

[ferdo]

Hi,

Can you use CATIA.StartCommand "The name of the coomand which you can find in View - Commands List... menu" ?

Or maybe I didn't understand what you want and in this case is better to see a sample (or picture)...

Regards
Fernando

https://picasaweb.google.com/102257836106335725208

https://picasaweb.google.com/103462806772634246699/

 

[margntou]

Hi ferdo and thanks for your response. I have attached 3 pictures. What I have to do is to reconstruct the specific area of a bone from an stl file. In the first pic you can see this area and the main issues. There are several parts of this area that have not been "imprinted". So, in order to reconstruct it I have to extract some basic geometry. The steps that I am thinking are: Create 10 planes every 2mm and intersect them with the model. I take these splines, create new points and create new closed splines. This process needs to be automated. I have already automate the part were I create the planes, the points and the new splines but I cannot automate the intersection between this meshed model with the planes. Manually I have used not the planar sections but the "mesh intersect" button from "Editing" toolbar in Shape Sculptor. When I am trying to record this command of course I take nothing. In the other two pics you will see the planes and the manually achieved splines. The reason why I am trying to do this process with the stl is because the "Automatic surface" button in QSR Workbench is not working due to complicated geometry and several other issues. I can manually use the "Mesh cleaner" but I cannot automate this tool also.

I really hope the pics will help.

 

[margntou]

This pic shows the planes

 

[margntou]

This pic shows the curves after the intersect

 

[margntou]

I tried the "CATIA.StartCommand ('Mesh Intersect')" as you mentioned, and I have the window. Now I will need to select all the planes and the mesh. For example if I want to create a plane I will use ........... Set reference1 = part1.CreateReferenceFromObject(hybridShapePlaneExplicit1)
Set hybridShapePlaneOffset1 = hybridShapeFactory1.AddNewPlaneOffset(reference1, 2.000000, False)
............................
hybridBody1.AppendHybridShape hybridShapePlaneOffset1
..............................
Any ideas of what should I use here? How can I define the Item for the mesh?

 

[ferdo]

Hi,

For the time being I don't have CATIA (I'm at the end of a contract and I'm preparing to go back home) but in few days I can take a look.

Till then, can you try to select everything before using intersect command?

Regards
Fernando

https://picasaweb.google.com/102257836106335725208

https://picasaweb.google.com/103462806772634246699/

 

[margntou]

Hi ferdo, I hope for the best. I managed to select all the planes and the mesh. Now I just have to fix my sendkeys cause I am programming in Python and that is all. The "CATIA.StartCommand ('Mesh Intersect')" really helped me cause now I know that I can use it in order to program more commands. Thanks a lot for you time