Animation shows screen saver

[John Shalf]

I've put vtkOpenGLOffscreenRenderWindow source code at
	ftp://bach.ncsa.uiuc.edu/outgoing/vtkOffScreen.tar.gz
I'll write up a webpage about it soon, but the README file should tell a
good part of the story.  If you compile with -DUSE_PIXMAP it will work
(slowly) on most unix/GL/X11 platforms (you can use the Win32 offscreen
renderer for non-unix/X11 rendering).  However using PIXMAPS will cause
the GL implementation to revert to software rendering on most
platforms.  If you compile with -DUSE_PBUFFER, it will use SGI's
hardware frambuffer (pixelbuffer) on most contemporary SGI systems. 
This is considerably faster than software.

Please tell me if you find any bugs (not flames).  I'd release more
stuff if I didn't get flamed so badly when people find bugs.

-john 

Daniel G. Downey wrote:
> 
> Hi,
> 
>    Is there a way to write animation files (Or ppm or tiff or whatever)
> without going through a GUI window?  ie., batch mode?  I would like to
> use a gui only to orient the object the way I want then say "Run Animation"
> 
>   I have written a program that outputs a ppm file of a moving iso-surface.
> For each step, save an image, etc.   It works but the %$@$^@ thing saves
> anything in front of the GUI window. (Including SCREEN SAVER shots!!)  For
> large datasets it can take hours and you don't dare touch anything or you
> get a picture of say your email in the image.
> 
> Thanks for any help,
> Dan Downey
> 
> ----
>  Daniel Downey   Email:  downey at mrco2.carleton.ca
>  Dept. of Mechanical and Aerospace Engineering
>  Carleton University, 1125 Colonel By Drive,
>  Ottawa, Ontario, Canada, K1S 5B6
>  tel:(613) 520-2600 ext 5649   fax:(613) 520-5715
> 
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