[Gambas-user] Difference between Picture and Image?

[Srikanta Prasanna]

Yeah! Image Magic project would be cool!

I'm starting to go through Magic++ APIs. I feel I can take work on 
this as a starter :)

Thanks!

srikanta prasanna


On Thu, 13 Jan 2005 08:10:14 -0500, Rob <sourceforge-raindog2 at ...94...> wrote:
> On Thursday 13 January 2005 06:18, Eilert wrote:
> > What is the difference between Image and Picture?
> 
> To explain this difference, I first have to explain to you how
> X11 (the graphics subsystem of Linux and almost every other
> Unix) works a little bit.  With X, your program can run on one
> machine but have its window display on a machine somewhere else
> on the Internet, if you want it to.  This is so that you can
> have one big fast server running many copies of one application,
> and a bunch of cheap little terminals displaying that
> application (basically, "thin clients", but they didn't use that
> term at the time.)
> 
> An Image is a graphic that lives in your program.  As such, you
> have more access to it and can do more stuff to it, like
> stretch, fine rotate, etc.
> 
> A Picture is a graphic that lives on your X display, whether it's
> on the same machine or in Mongolia or whatever.  So any
> manipulation you do to this picture will happen over a network
> link or a local pipe, and as such it's likely to be a lot
> slower.
> 
> In graphic-intensive apps, I have found myself converting between
> Image and Picture quite a bit to use different features of each.
> I wonder if Gtk has these issues with process-space graphics vs.
> display-space ones, because it's confusing and a little
> annoying, even though I understand why it has to be.  Maybe an
> ImageMagick component would help this somewhat.  Hey Srikanta,
> maybe that could be a cool first project for you :)
> 
> To sum up, here's how you can think of them: Image is for
> manipulation, Picture is for display.
> 
> Rob
> 
> 
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