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Re: Polyfill, z-buffer & postscript [message #33787 is a reply to message #33785]

Mon, 27 January 2003 11:57

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

"Isa Usman" <eepisu@bath.ac.uk> writes:

> Hi,
>
> I am using polyfill to plot radar scans directly to postscript. The
> resulting files are quite big (~1MB) and I need to make them smaller.Is
> there a simple way?
>
> I thought about using the z-buffer to do the plotting then saving it to
> postscript like this

You are rendering your graph to the Z buffer, then doing a screen
capture. Of course the result will be a large file! Also, you lose
graphical fidelity, since the Z buffer will be pixelated at some
coarse density, while any postscript printer will have a much higher
resolution.

Why don't you render your plot directly to the Postscript device, and
skip the Z buffer stage?

Good luck,
Craig

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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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		Re: Polyfill, z-buffer & postscript By: Rick Towler on Mon, 27 January 2003 13:13
		Re: Polyfill, z-buffer & postscript By: Craig Markwardt on Mon, 27 January 2003 11:57

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