It doesn't seem to be documented (nor is it particularly advanced),
but I had some luck with simple image drawing by looking into the
images.processing vocab:
https://github.com/slavapestov/factor/blob/master/basis/images/processing/processing.factor
For example, try the following in the UI listener:
USING: images.processing images.viewer ;
{
{ 1 1 1 1 1 }
{ 1 0 1 0 1 }
{ 1 1 1 1 1 }
{ 0 1 1 1 0 }
{ 0 0 0 0 0 }
{ 1 1 1 1 1 }
} flip 10 matrix-zoom matrix>image image.
For loading/saving images, see the images.loader vocab:
http://docs.factorcode.org/content/vocab-images.loader.html
There could very well be better libraries that I'm simply unaware of.
It might help to peruse
http://docs.factorcode.org/content/vocab-images.html
The UI vocabs also come to mind:
http://docs.factorcode.org/content/vocab-ui.html Not sure if they'll
be of much help here, though. But an example of a polygon in the UI
anyway:
USING: colors.constants ui.pens.polygon ui.gadgets.panes ;
"black" named-color { { 0 0 } { 100 100 } { 200 0 } }
<polygon-gadget> gadget.
Hope that's enough to get you started (or at least until someone with
a better answer comes along),
--Alex Vondrak
On Sun, Oct 13, 2013 at 10:43 PM, Alf Mikula <[email protected]> wrote:
> Hey everybody,
>
> I'm having a little bit of trouble getting started, and I'd appreciate any
> help that anyone can offer.
>
> I'm looking for a simple example on how to draw lines and polygons, and how
> to save the results in an image, such as a jpg or png file.
>
> Can anybody provide an example, or point me in the right direction?
>
> Thanks,
>
> -Alf
>
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