topic Re: Get section view of GDL object. in Libraries & objects

Get section view of GDL object.

Anonymous — Mon, 02 Sep 2013 11:16:26 GMT

Hi everyone,

I have made a new parametric GDL object and have successfully created the plan and 3D view for it.

The problem comes when I try to create the section view for the object; it doesn't show the internal structure of the component (it only displays a black surface). I have used GLOB_CONTEXT but I haven't had any success so far.

Would anybody be able to suggest any solutions for me?

Thanks
Stickinsect7

Re: Get section view of GDL object.

Erich — Mon, 02 Sep 2013 20:53:40 GMT

In section it will display what ever you created in 3D. If you built the internal structure, whatever it might be, in the 3D script, then it will show in the section.

If you have done this and are still just seeing a solid cut fill, perhaps you have some element of your object that is obscuring the internal details.

Re: Get section view of GDL object.

Anonymous — Tue, 03 Sep 2013 13:41:13 GMT

Erich

Thank you for your quick response.

The section view now only shows the outline of the object, but when you highlight it the internal structure is displayed. Does this suggest to you that there is an element of the object that is obscuring the internal details?

Re: Get section view of GDL object.

Laszlo Nagy — Tue, 03 Sep 2013 14:56:03 GMT

I am wondering if it would be possible to define a CUTPLANE in 3D for the GDL Object. If the Global Context is Section, then With and IF THEN structure you would execute the CUTPLANE command. This would be a vertical cut plane and would cut you GDL object at the desired position.

Re: Get section view of GDL object.

sinceV6 — Tue, 03 Sep 2013 17:01:57 GMT

Some things that need to be checked:
- that your section doesn't override the object's fill with a single fill (for all cut elements), because then it will be shown as you describe (same fill regardless of each internal structure)

- that your object has distinct fill for each part, or AC will merge those fills in section

- that you use SOLID, because if you are building surfaces in GDL, section views might not show any fill, and only display the internal elements once highlighted or selected.

hope this helps.

Re: Get section view of GDL object.

Erich — Tue, 03 Sep 2013 19:39:59 GMT

If the object is still not working properly, you could try posting it so we can see the code and find the issue that way (assuming this is not a commercial object).

Re: Get section view of GDL object.

Anonymous — Tue, 03 Sep 2013 20:38:32 GMT

If you have several materials, take a look at SECT_FILL or SECT_ATTRS commands in the GDL ref guide.
Place the desired command before each new material in the 3D script.

This is the old way to get a correct display in section. It still works for me.

Re: Get section view of GDL object.

Anonymous — Wed, 04 Sep 2013 09:35:56 GMT

Thank you for all the responses, I will have a look in to all of them.

Unfortunately I'm not able to post the object on here as it's a commercial object but I have attached a couple of pictures showing what is happening when I take a section through the object (a prefabricated timber roof panel that has been scripted to be structurally correct).

The first image shows what I get if I take a section through the object (just the outline) and the second one shows the same but with the object highlighted. Ideally I would like to have the internal structure showing in the section view without having to highlight the object.

Thanks again

Re: Get section view of GDL object.

Anonymous — Wed, 04 Sep 2013 09:37:38 GMT

Sorry could only attach one image at a time. Here is the second one showing the section view of the highlighted object.

Re: Get section view of GDL object.

Erich — Wed, 04 Sep 2013 13:28:51 GMT

It appears that you have two planar elements to form the top and bottom of the assembly and a bunch of joists/rafters inside. However, when you select the whole object, there is also another element that fills the whole space between the top and bottom surfaces. I suspect that this is your problem. Unless you do as Oliver suggests, ArchiCAD will merge all the similar fills which seems to be the effect you are seeing.

Better still comment out, or turn off is some other way, the other element and the details should show up fine.

Re: Get section view of GDL object.

Anonymous — Thu, 05 Sep 2013 09:27:37 GMT

Thank you for all of the help, it has been successful!

I spent some time doing as Olivier and Erich suggested (using the SECT_FILL command to define the seperate fill areas) and I have now got a detailed section through the object.

Thanks again for all the help, it's greatly appreciated!