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Re: Z-Buffer [message #8191 is a reply to message #6727]

Tue, 11 February 1997 00:00

savoie
Messages: 68
Registered: September 1996

Member

> I have a brand new copy of the Michael Dorris' novel A Yellow
> Raft in Blue Water (a must-read book if you haven't read it
> yet). I'll give it to the first person who posts an IDL program
> that draws a surface in the Z-buffer and labels the axes in the
> proper locations on the display. Put the time you post the result
> in your post, so I don't have to worry about how long the news
> machines take to get it to me.
>
> If we don't have any winners, I'll post my answer next week.
> (It will probably be wrong!)

I don't know if you wanted to know how long it took (~1h to find all the
variables that changed when I switched from x to Z buffer, but I've never
used the Z buffer before, so that doesn't seem that bad). But here's one
solution using the program that you used first.

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
pro zbuffit
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

tvlct, [255,0], [255,255], [0,0], 1

data = dist(40,40)
thisdev = !d.name
dvar = !d
set_plot, 'Z'
device, set_resolution=[300,300]
device, set_character_size= [dvar.x_ch_size,dvar.y_ch_size]
surface, data, color=1
picture = tvrd()
set_plot, thisdev
window, xs=300, ys=300, /free
tv, picture
surface, data, /nodata, /noerase, color=2

END

This works on my machine.
cheers,
Matt
entry time
Tue Feb 11 10:10:19 MST 1997

--
Matthew H. Savoie Systems Technology Associates
Systems Analyst Supporting NOAA Profiler Network
ph. 303.497.6642 Demonstration Division/FSL/ERL
mailto: savoie@fsl.noaa.gov <URL:http://www-dd.fsl.noaa.gov/online.html>

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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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