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Re: selecting model objects [message #20821 is a reply to message #20793]

Tue, 25 July 2000 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Rick Towler (rtowler@u.washington.edu) writes:

> I have a base model (a map) that contains other models (geographic
> data). I need to select data within the map using the IDLgrWindow
> Select method. Right now I am only getting the base model returned.
>
> object heirarchy is: [data_model]->[map_model]->[oView]->[oWindow]
>
> ; my select code
> item = oWindow->Select(oView, [event.x, event.y])
>
> item contains the reference to map_model only.
>
> A key point is that I need to anchor the geographic data to the map and
> I need to be able to translate and scale the map. Because of this I
> haven't been able to add the data objects directly to the view since
> each of the objects would translate/scale independently and the
> geographic data would be dereferenced from the underlying map.
>
> is it possible to select a model (or atom) that is contained in another
> model that is contained in a view?
>
> If not, is there a way to "join" 2 or more models so when translating or
> scaling they behave as 1?

To make a model object "selectable" you must first set
its SELECT_TARGET keyword. The Select method should then
return an array of selected objects located under the
selection point.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: selecting model objects By: Mark Hadfield on Wed, 26 July 2000 00:00
		Re: selecting model objects By: Rick Towler on Wed, 26 July 2000 00:00
		Re: selecting model objects By: Mark Hadfield on Wed, 26 July 2000 00:00
		Re: selecting model objects By: Rick Towler on Tue, 25 July 2000 00:00
		Re: selecting model objects By: davidf on Tue, 25 July 2000 00:00

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