[REBOL] PDF Maker
From: g:santilli:tiscalinet:it at: 15-Jul-2001 19:42
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...
'apply 'rotation angle 'translation x y [
'apply 'scaling sx sy [
; 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.
Gabriele Santilli <[giesse--writeme--com]> - Amigan - REBOL programmer
Amiga Group Italia sez. L'Aquila -- http://www.amyresource.it/AGI/