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Re: PPM image from IDLgrBuffer: top-bottom order [message #30419 is a reply to message #30409]

Wed, 24 April 2002 20:09

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Sean Dettrick (dettrick@uci.edu) writes:

> I'm trying to draw my view object to a PPM image file,
> so that I can then do FLIC animation via ppm2fli.
>
> In direct graphics it's easy to do this with:
> wset,window_number
> image = tvrd(true=1,/order)
> write_ppm,'name.ppm',image
> where top-bottom order is reversed to give an upside-up
> PPM image.
>
> In object graphics, I am stumped again.
>
> 2) take image data direct from buffer object:
>
> buffer=Obj_New('IDLgrBuffer',graphics_tree=thisView,$
> dimensi=[400,400])
> buffer -> Draw
> buffer -> GetProperty, image_data=image_dat
> write_ppm,'name.ppm',image_dat
>
> By the way, there doesn't seem to be an option in ppm2fli
> to automatically flip the input images.
>
> Any advice greatly appreciated!

I'd use the REVERSE function like this:

2) take image data direct from buffer object:

buffer=Obj_New('IDLgrBuffer',graphics_tree=thisView,$
dimensi=[400,400])
buffer -> Draw
buffer -> GetProperty, image_data=image_dat
write_ppm,'name.ppm', Reverse(image_dat,3)

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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		Re: PPM image from IDLgrBuffer: top-bottom order By: Sean Dettrick on Thu, 25 April 2002 19:31
		Re: PPM image from IDLgrBuffer: top-bottom order By: Rick Towler on Thu, 25 April 2002 13:30
		Re: PPM image from IDLgrBuffer: top-bottom order By: David Fanning on Wed, 24 April 2002 20:09

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