[REBOL] Re: PDF Maker
From: sqlab:gmx at: 16-Jul-2001 9:32
Hi Gabriele
I really appreciate your work,
Some comments.
How about a path notation in using the options,
as in
'box
'box/solid
'box/line/width
'line
'line/width
regards
AR
> Hi!
>
> I just wanted to note that I'm currently adding graphics to
> pdf-maker.r. It now does lines and boxes as well as coordinate
> transformations (nested at any level). I'll add generic shapes
> very soon, together with clipping etc. I've also added comments to
> the code so that you'll be able to see how it is working (and use
> the lowlevel dialect if needed).
>
> For the graphics I decided to go this way:
>
> ; simple commands
> 'line x1 y1 x2 y2
> 'box x y w h
> 'solid 'box x y w h ; for filled box
> ; you can also set line width etc.
> 'line 'width w 'cap 'round
> ; or set and draw
> 'line 'width w x1 y1 x2 y2
> ; for BOXes
> 'box 'line 'width lw x y w h
> ; which is the same as
> 'line 'width lw
> 'box x y w h
> ; line color can be set with
> 'line opt ['color] tuple!
> ; fill color with
> 'fill opt ['color] tuple!
>
> ; transformations can be done with
> 'apply 'translation x y [
> ; ...
> ]
> ; you can nest them...
> 'textbox ...
> 'line ...
> 'apply 'rotation angle 'translation x y [
> 'line ...
> 'textbox ...
> 'apply 'scaling sx sy [
> 'box ...
> 'textbox ...
> ]
> ]
> ; and so on... (apply has other nice features, too)
>
> ; for paths, I plan to go this way
> 'stroke options [path] ; draw a path
> 'fill options [path] ; fill a path
> 'paint options [path] ; fill and stroke a path
> ; where the options are the same as for LINE etc.
> ; and set a new state
>
> I'd like to have comments on these.
>
> Regards,
> Gabriele.
> --
> Gabriele Santilli <[giesse--writeme--com]> - Amigan - REBOL programmer
> Amiga Group Italia sez. L'Aquila -- http://www.amyresource.it/AGI/
>
AR
