LabVIEW

[KellyH]

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chilly charly wrote:
I may have missed something somewhere, but is there any tutorial or help file on the subject ?

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Someone already pointed out some examples, but here's a link to some of the LabVIEW Help content about the 3D picture control:
http://zone.ni.com/reference/en-XX/help/371361B-01/TOC22.htm (last 2 links under Concepts and last 3 under How-To)

[Jim_Kring]

Are there any problems installing the pre-release version of the 3d Picture Control in LabVIEW 8.2?  I believe that the 8.2 version VIs are all members of a project library, so there are probably no VI name collision issues and the pre-release version is installed beneath vi.lib/addons whereas the 8.2 version is installed in another location.

Thank you,

-Jim

[Nandha]

I am currently working on a 3D display with Labview 7.1, i just need rotation and cange of color and if possible to load vrml model.

in temsof color change, i don't think that i don't have much problems,  

but to rotate an object is currently i have some problems :

- How to move the pivot point of an object in order to rotate them, it seems however i change the rotation axis, the pivot point will always be in the center of the object.

- Secondly, how to rotate two different object in different rotation, it seems that to make objects you need to combine them all in a render scene.vi and the add object.vi

  so when ever i transform the first object the other object will follow. But i want to transform them seperately.

- And third, i want to make an extruded object from a (let say) polygons, how to do that, or else just export a vrml file and utilize it into the scene.

  Is there anyone have a sample ?

and i will attach my vi here, and as you can see, the arrow pivot point is still in the center of the object

Please help me. And Thank you

[Doug M]

Nandha, I would suggest creating a new thread for an unrelated question, that way you'll get more views.

It is a little tricky to understand how coordinates are referenced in the 3d picture control, but basically things are referenced from their parent object, which you wire as an input in the Add Object VI.  The best example VI to study would be the RobotArm.vi

[Nandha]

Yes, i kinda get what you meant by now, because previously i didn't notice about the example of Robot arm. But still is very hard to follow for a labview beginner like me.

Thanks

[rolfk]

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Nandha wrote:

Yes, i kinda get what you meant by now, because previously i didn't notice about the example of Robot arm. But still is very hard to follow for a labview beginner like me.

Thanks

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For me the 3D (VRML) world is also hard to understand and I know LabVIEW quite well. I guess my mind works in 2D mode (LabVIEW diagram) and has some trouble to gets its grasp on 3D :-)

Rolf Kalbermatter

[Doug M]

Nandha,

Yes, the 7.1 version of the 3D picture control was really a prerelease version that people could play with and give feedback on, unfortunately it had very little documentation, but the example I mentioned shows most of its capabilities, the best way to learn would be to start out with a couple of objects and see how they relate to each other with the parent child object relationships and continue adding objects, using the RobotArm example as a reference.

[rakahmed]

Hi, I have a 3D model in *.3ds format and I want to have 2D image from the model in any required orientation/projection. Can I do it in Labview ? Thanks a lot in advance.

[Eriquito]

Hi rakahmed,

LabVIEW doesn't have any built in VIs for dealing with 3D Studio Max files.  If 3ds max (or any other program compatible with the .3ds file format) has an activex interface , you can use those objects in the LabVIEW activex containers.

[rakahmed]

Thanks, Eriq for your informative reply. If I can make Labview to read the 3D file in any format, can I do the later part, ie., have 2D rendered image from the file in any required orientation/projection from it ? It would be nice if you please refer to any documentation as well. Thanks again for your nice cooperation.