how to select body from components at assembly level

[yadvdinesh]

I want to select only the bodies of the individual components from a component assembly so that those bodies can be moved to a particular layer. I am writing an NXOpen application using C++ language for the same. Can anyone plz guide me how to approach. I am trying to use Component->prototype->owningPart->body Collection sequence but unable to select bodies.

 

[cowski]

You can't move component bodies to different layers in the assembly willy nilly; the component layer option plays a part in what is and is not allowed. When you add a component to an assembly you basically have two different layer options: "original" and "as specified". If you use the "original" option, the component body layers in the assembly will map to the body layers in the part (a body on layer 2 in the part file will show up on layer 2 in the assembly). The "as specified" option will place all the component geometry on the specified layer in the assembly. So if the part has a body on layer 2 and you use "as specified, layer 5", the body will show up on layer 5 in the assembly even though it is on layer 2 in the part.

I've not tested moving bodies in the assembly to different layers, but I imagine one of three things happening:
[ul]
[li]an error will be thrown[/li]
[li]initially, the body will move to a different layer but NX will move it back when an update occurs[/li]
[li]the body moves to a different layer causing it to be out of sync with the layer option[/li]
[/ul]

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[Bleaker]

AFAIK, Component->Prototype->OwningPart is actually the assembly "part" that (normally) doesn't have any solid geometry. To get the bodies you can try casting the Component->Prototype object to Part and get the bodies from it, i.e.:

NXOpen:art *part = dynamic_cast<NXOpen:art*>(component->Prototype());
NXOpen::BodyCollection *bodies = part->Bodies();

Of course, the bodies you get this way are from prototype part of the component. Moving the component bodies around the layers seems to get reset on reload/update.

(Bit of a necropost, sorry)

 

[yadvdinesh]

Thanx Bleaker for your response. Even I solved this problem this way only.

 

[cowski]

If you have a reference to the component and the prototype body, you can use UF_ASSEM_find_occurrence to get the corresponding instance body in the assembly (unless the body gets promoted in the assembly).

Changing the layer of this body may not have the intended effect...

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