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Re: Another Long Day Compliments of Object Graphics [message #21217 is a reply to message #21211]

Wed, 16 August 2000 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Mark Hadfield (m.hadfield@niwa.cri.nz) writes:

> If you put an image then another atom
> into a model, the other atom is visible over the image irrespective of its
> vertical position. If you reverse the order in which they are put into the
> model, the other atom is not visible over the image, again irrespective of
> its vertical position. At least that's what my experience shows.
>
> Of course the general guideline that you should control visibility/overlap
> of graphics atoms (other than images) by vertical position and not drawing
> order is one of those secrets the IDL documentation doesn't want to tell us.

Odd that you should mention this, because once I *did*
get the darn thing rotating I noticed that the tick marks,
which were at the same Z level as the polygon/image were
fading in and out with rotation. I moved the tick marks
up 0.001 unit in Z and all was well. Are you saying
I could *not* do this if I didn't have the image in
a polygon?

Humm. I'll have to check. But not today. :-)

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/
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[Message index]

		Re: Another Long Day Compliments of Object Graphics By: Mark Hadfield on Wed, 16 August 2000 19:17
		Re: Another Long Day Compliments of Object Graphics By: Mark Hadfield on Wed, 16 August 2000 17:12
		Re: Another Long Day Compliments of Object Graphics By: Mark Hadfield on Wed, 16 August 2000 16:05
		Re: Another Long Day Compliments of Object Graphics By: davidf on Wed, 16 August 2000 00:00
		Re: Another Long Day Compliments of Object Graphics By: davidf on Wed, 16 August 2000 00:00

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