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Re: fast magnification routine needed [message #2268 is a reply to message #2263]

Mon, 13 June 1994 09:34

peter
Messages: 80
Registered: February 1994

Member

Victor Shvetsky (vshvetsk@fourier.oac.uci.edu) wrote:

: I have a 20x20 array that I would like to magnify to 200x200
: It works like this- as my cursor moves around the picture, that part of the picture is magnified in real time in a second window by a facvtor of ten (20->200)
: Right now I am using the REBIN routine,, and I was wondering if there is anuything FASTER than that. Is it possible to STORE THE WHOLE image magnified into the memory and just display a part of it in the window- wouldiot be faster?
: If so, what is the command that SAVES the image into the memory, because
: I know to retrievce, I hhave to typre: tvrd
: Thanks in advance

Victor,

By far the fastest way to copy images around is to let the X server take
care of it. Assuming you have a displayed image, use TVRD to read
the screen, then magnify the whole image with REBIN and display it in a hidden
pixmap (see the /pixmap keyword to WINDOW). Then, use DEVICE, /COPY to
copy sections of the pixmap to your displayed window. You should get
real time performance this way.

Peter

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[Message index]

		Re: fast magnification routine needed By: velt on Mon, 13 June 1994 13:15
		Re: fast magnification routine needed By: peter on Mon, 13 June 1994 09:34
		Re: fast magnification routine needed By: knipp on Mon, 13 June 1994 01:06

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