Re: [Visualpython-users] Why no screenshot function?

[Robert X. <nne...@gm...>]

Turning on full-screen view (scene.fullscreen = True) usually gives a good
enough bitmap resolution for most purposes.

Robert

2009/10/18 Bruce Sherwood <Bru...@nc...>

> And there is PIL, the Python Imaging Library, which can do lots of image
> conversions. But the fundamental problem is that you'll have a
> low-resolution
> bitmap image, which isn't good for many applications.
>
> Bruce Sherwood
>
> Stanley Sokolow wrote:
> > Bruce is correct that there are screenshot functions in the operating
> > systems, including LInux.   In Ubuntu Linux and probably most
> > distributions, there's a widget that can be added to the desktop panel
> > for taking a screenshot.   On Windows, I use the Shift-PrintScrn key
> > combination, then open the accessory program called Paint and paste
> > (Ctrl-V) the clipboard onto the canvas.   Using Paint you can crop and
> > make other changes, then save as jpeg or other formats.  I've used this
> > to make step-by-step instruction manuals for using software, with a
> > screenshot of each important step.
> >
> > Another useful program is the ImageMagick library, which is available
> > for many programming languages, including Python:
> > http://www.imagemagick.org/script/index.php.   It can do lots of image
> > conversions.
> >
> > Stan
> >
> > ------------------------------------
> > On Sun, Oct 18, 2009 at 8:00 AM, Bruce Sherwood <Bru...@nc...
> > <mailto:Bru...@nc...>> wrote:
> >
> >     That could be useful; perhaps the reason it's not there is that
> >     there hasn't
> >     been much need expressed for such a facility. Note that on Windows
> >     and Mac (and
> >     maybe on Linux?) there are facilities built-in to get screen shots.
> >     For example,
> >     Alt-Print Screen on Windows captures a bitmap image of the active
> >     window, which
> >     can then be pasted into various applications, including Word.
> >
> >     Converting to jpeg is NOT a small job. A jpeg is extremely different
> >     from a
> >     bitmap image. Any easily-implemented screen capture will necessarily
> >     be a bitmap
> >     image, and therefore necessarily low-resolution for print purposes.
> >
> >     For many purposes one wants something much better than a bitmap
> >     image. In the
> >     contributed section of vpython.org <http://vpython.org> the
> >     povexport utility generates a file that
> >     can be read by the freeware POV-ray application to generate a
> >     high-resolution
> >     ray-traced image of a VPython scene.
> >
> >     A separate issue is that it would be very useful, and probably not
> very
> >     difficult, to generate a PostScript file from a (two-dimensional)
> >     graph in order
> >     to produce high-resolution prints of graphs.
> >
> >     Bruce Sherwood
> >
> >     Anders Wallin wrote:
> >      > Hi all,
> >      >
> >      > Why is there no screenshot function in visual?
> >      >
> >      > I've looked a bit at SDL/OpenGL in C++ under Ubuntu, and it's
> about a
> >      > 5 min job to google for the correct screenshot code and get it
> >      > working. It saves a 24-bit TGA-file, but I imagine changing that
> to
> >      > bmp or jpeg or similar is not a big job either. I must be missing
> >      > something?
> >      >
> >      > thanks,
> >      >
> >      > Anders
> >
> >
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