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Re: Z-Buffer [message #8185 is a reply to message #6727]

Tue, 11 February 1997 00:00

Robert.M.Candey
Messages: 23
Registered: June 1995

Junior Member

In article <davidf-ya023080001002972203460001@news.frii.com>,
davidf@dfanning.com (David Fanning) wrote:

> Here is a bit of IDL code that illustrates the problem John-David
> is having. You will notice that the axes don't line up, even though
> the same code is used to display the surface both in the Z-buffer
> and on the display.
>
> TVLCT, [255, 0], [255, 255], [0,0], 1
> data = DIST(40,40)
> thisDevice = !D.NAME
> SET_PLOT, 'Z'
> DEVICE, Set_Resolution=[300,300]
> SURFACE, data, Color=1
> picture = TVRD()
> SET_PLOT, thisDevice
> WINDOW, XSize=300, YSize=300
> TV, picture
> SURFACE, data, /NoErase, /NoData, Color=2
>
> I've sent John-David a solution to this problem via private
> e-mail and have sworn him to secrecy so we can have a little
> diversion on this newsgroup.
>
> This problem illustrates one of the deepest mysteries about
> IDL that I know. I don't think there are many IDL programmers
> who can solve this problem. If you can, you get an automatic
> invite to the IDL Expert Programmers Convention. So here is
> the contest.
> ...

Ah, the answer is simple: add ",set_char=[6,10]" to the device line. This
defines the same character size as X, so the margins become the same size.
(submitted 1997 Feb 11 20:50 EST)

--
Robert.M.Candey@gsfc.nasa.gov
NASA Goddard Space Flight Center, Code 632
Greenbelt, MD 20771 USA 1-301-286-6707

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[Message index]

		z-buffer By: sjang on Mon, 05 August 1996 00:00
		Re: Z-Buffer By: sigut on Thu, 13 February 1997 00:00
		Re: Z-Buffer By: J.D. Smith on Wed, 12 February 1997 00:00
		Re: Z-Buffer By: sigut on Wed, 12 February 1997 00:00
		Re: Z-Buffer By: Robert.M.Candey on Tue, 11 February 1997 00:00
		Re: Z-Buffer By: davidf on Tue, 11 February 1997 00:00
		Re: Z-Buffer By: savoie on Tue, 11 February 1997 00:00
		Re: Z-Buffer By: davidf on Mon, 10 February 1997 00:00
		Re: Z-Buffer By: davidf on Wed, 27 October 1999 00:00

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