It might be easier for you to draw with OpenGL into a gadget (lots of
examples available include the NeHe tutorials and maze and games like
tetris, etc) and then take a screenshot of the gadget, using the cap
vocabulary?
On Mon, Oct 14, 2013 at 12:06 AM, Alex Vondrak <ajvond...@gmail.com> wrote:
> 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 <amik...@gmail.com> 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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