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Re: show a use-defined object [message #67332]

Thu, 16 July 2009 09:24

rtowler
Messages: 28
Registered: June 2006

Junior Member

On Jul 16, 5:10 am, David Fanning wrote:
> danyang writes:
>> But now my objects should be changed to some kind of air ballons,
>> which has hard shell with a radius of R1 and air-kern with the radius
>> of R2(R1>R2). Some of them should be cut(e.g. instead of the whole 3D
>> region just to show part of it) , in order to show their hollow
>> kern.
>
>> Is it possible to make my aim come true with 'XOBJVIEW'?
>
> XObjView doesn't have anything to do with your aim. It
> is just one way you can display your graphics hierarchy.
> There are many others. You need to concentrate on the
> hierarchy.

I suppose it depends on what aim you are talking about ;)

But David's point is a good one. You've created some orbs and (I am
assuming) displayed them. Now you want to display a custom object and
you have to "build" it. The best way to approach this would be to
create your own object by subclassing IDLgrModel. You'll have to come
up with the meshing routine yourself but you'll probably want to look
at orb__define.pro as a place to start. In fact, orb__define.pro is
also an example of how to subclass IDLgrModel so you may want to just
copy it and start modifying it for your needs. You'll want to look at
the MESH_CLIP function too. I don't really understand what you're
after, but maybe the init method of your new balloon class would take
a inner and outer radius, position (x,y,z) and an optional clipping
plane and it would create your object. Then you would use this new
class just like you used orb initially.

Once you get to this point, then you can worry about moving from
XOBJVIEW to a more flexible display technique.

-Rick

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[Message index]

		Re: show a use-defined object By: rtowler on Thu, 16 July 2009 09:24
		Re: show a use-defined object By: David Fanning on Thu, 16 July 2009 05:10
		Re: show a use-defined object By: danyang on Thu, 16 July 2009 02:24
		Re: show a use-defined object By: danyang on Thu, 16 July 2009 02:16
		Re: show a use-defined object By: rtowler on Wed, 15 July 2009 09:18
		Re: show a use-defined object By: David Fanning on Wed, 15 July 2009 05:32

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