World: r3wp

Why not have a viewport which can be of any shape ?

Heh - i never saw the clip command before :)  Shame on me :)

in my svg render i use push to make a drawing layer order and that 
work pretty good

SVG support the element  in a stackable way so it's good to be able 
to reproduce that feature with draw/AGG push

for example  you draw a black cirle and on top of it you put 2 spots 
yellow and a yellow line  SVG keep the track of that and rebol drew/AGG 
is abe re produce it perfectly...

IS ther a good description of AGG somewhere?

From the author: http://antigrain.com/about/index.html

would it be possible to use agg to create kind of Corel Draw? Simply 
to detect objects you draw? If I understand it correctly, currently 
when once you draw, it is laid down to face bitmap ...

The question is here because not of clone attempt of Core Draw, but 
just curious, if screen-painter could be created. Currently we have 
boxes as effect for 'edge, but ...

of course ability to change mouse pointers to reflect you are at 
right position would be handy to have too ....

do you mean: if I draw line if I can detect if I'm over the line?

yes, detect, press mouse button, have it somehow visually distinguished 
(like bezier curves, those little black boxes over the vector, to 
drag it, you know :-)

That's related to Rebol itself, not just AGG. And it's very bad that 
it's not possible.

I was thinking about making simple vector editor, but it's not possible 
without this feature. In Flash you can detect feels over shapes, 
in Rebol we are limited to faces:(

what do you mean by "shape"?

for example line

you mean non rectangular windows directly in rebol view kernel?

some place where is drawn something

but that would not be sufficient for drawing app as well ... dunno 
what such routines are based upon, but it cant be magic, no? :-)

just have to know what is shape and what is (event) transparent:)

but it should be done in Rebol internally. not that I will make images 
from all drawings and check if it's transparent or not under my cursor

IIRC Tao Intent has such capabilities, you can decide upon alpha 
channel even, so your events could be transparent etc ... well, that 
could be coded too, no? you just press mouse, you detect position 
of your press, and decide what is under the mouse - that is the most 
difficult part imo ...

I think cyphre have some simple examples how to do this but... it 
should be in Rebol internally:)

Paul Nolan once told me, that the most capable compositing engine 
he saw was Shake: http://www.apple.com/shake/- look at features. 
But Carl once told me, that View uses kind of "nodes" too or something 
like that, simply that View has some advanced compositing too ...

(well, except the blitting :-)

Rebolek's AGG demo called "Cyphre" reminds me a bit of Tempest 2000 
- anyone planning on a Tempest 2000 clone ?? :)

Hello folks  ^^

Here is a little somthing i was working on some month ago when the 
 Ritchtext edit  topic pops out -> RTE ...

the code is ugly but tiny there is some bugs but i think the idea 
is good  ^^

REBOL [
 Author: "Shadwolf"
 Starting_Date: 21-05-2005
 Purpose: {Research work on rebol draw capability to be 
 used to write a Ritch text editor} 
]

stylize/master [
	rte: box with [
		color: gray 
	    tampon: ""
	    buffer: []
	    line-index: 0
	    char-sz: none
	  	current-text-offset: 0x0
	  	cursor-text-offset: 0x0
	  	max-text-offset: 0x0
	  	text-color: black
	  	pane: []
	  	
	  	set-font-style: func [ font-s [word!]] [
	  		switch font-s [

      bold [insert tail buffer compose/deep [[ [size: 11 style: [(font-s)]] 
      (either cursor-text-offset/x <> 0 [cursor-text-offset] [as-pair 0 
      (line-index * 20)]) "" ]]]

      normal [insert tail buffer compose/deep [[ [size: 11 style: []] ( 
      either cursor-text-offset/x <> 0 [cursor-text-offset][as-pair 0 (line-index 
      * 20)]) "" ]]]

      underline[insert tail buffer compose/deep [[ [size: 11 style: [(font-s)]] 
      (either cursor-text-offset/x <> 0 [cursor-text-offset][as-pair 0 
      (line-index * 20)]) "" ]]]

      italic [insert tail buffer compose/deep [[ [size: 11 style: [(font-s)]] 
      (either cursor-text-offset/x <> 0 [cursor-text-offset][as-pair 0 
      (line-index * 20)]) "" ]]]
	  		]
	  	]
	  	
		feel: make feel [
			engage: func [f a e] [
				switch a [
				   
					key [ probe e/key
						switch/default e/key [
							#"^M" [
							line-index: line-index + 1

       f/current-text-offset: as-pair 0 f/current-text-offset/y + 20]

       insert tail f/buffer compose/deep [[ [size: 11 style: [(font-s)]](as-pair 
       0 (line-index * 20)) "" ]]
							
						][
							f/tampon: rejoin [f/tampon to-string e/key]
							draw-text: []
							print "f/buffer:"
							probe f/buffer
							foreach line-to-draw f/buffer [
								print "line-to-draw"
							;line-to-draw: f/buffer/1
								;probe line-to-draw
							;set [font-style start-offset text-to-show ] line-to-draw
							
								font-style: line-to-draw/1
								start-offset: line-to-draw/2
								line-to-draw/3: rejoin [line-to-draw/3 to-string e/key]
							;probe font-style 
							;probe start-offset
							
								font-obj: make face/font font-style
							;probe font-obj 
								text-to-show: line-to-draw/3
								;probe text-to-show

         insert tail draw-text  compose [ font (font-obj) pen (f/text-color) 
         text (start-offset) (text-to-show)]
							] 
							;print "draw-text:"
							;probe draw-text
							

       ;draw-text: compose [ pen (f/text-color) text (f/current-text-offset) 
       (f/tampon)]
				    		f/effect: make effect reduce [ 'draw draw-text  ]
				    		draw-text: none 
				    		;probe f/current-text-offset

       f/cursor-text-offset: as-pair (f/cursor-text-offset/x + 9) f/current-text-offset/y 
				    		;show f
						]
						f/pane/1/offset: f/cursor-text-offset 
						show f
					]
					down [
						;insert f/buffer compose [(as-pair 0 (line-index * 20)) ""]
						focus f show f
					]
					
				]
			]
		]
		append init [

   insert buffer compose/deep [[[size: 11 style: []] (as-pair 0 (line-index 
   * 20)) ""]]
			probe buffer

   insert pane make face [ color: red size: 2x20 offset: cursor-text-offset 
    ]
			show self 
		]
	]
]


view layout [
  across
  	btn "bold" [test-rte/set-font-style 'bold]
  	btn "underline" [test-rte/set-font-style 'underline]
  	btn "italic" [test-rte/set-font-style 'italic]
  	btn "normal" [test-rte/set-font-style 'normal]
  return
  	test-rte: rte 300x300
]

shadwolf, well, it's a start :-)

i will be really glad if  some AGG guru could have a look on this 
script and modify enhace it and maybe make a tiny lib  ^^

what we need for text  to begin is bold/italic/underline/normal/color 
 If you have 10 more minutes to pend on it  images  would be a plus 
 ^^

Henrik yes ... hum i guess you  didn't see this script runing lol 
it looks like I was drunk when i wrote that  lol

my main idea was to use draw and use a cursor /input output similator 
but i'm not really a specialist in that kind of motion

hiya shadwolf.. also working on something similar in the past.  Never 
finished it though an alpha for flounder is still on the website.

As  all of us i use premade stuff included in over priced C libraries 
 for "prfessionnel"

icarii can you past url of this project here this will allow ppl 
to compare / merge technics ...

http://rebol.mustard.co.nz/projects.htm

I'm intending to move flounder to AGG when i get a spare moment

by extension i was planing this to be once a short and full working 
solution will be found to insert it to RebGUI as a basic widget  
of this set  ^^

uses draw at present but not many differences

nice idea for widget

but u know ... hen u are drunk  you have full ideas then the next 
morning on wake up you read back the code and  "Hoooooooo damn ... 
was is this ?? i made it  ?? no serrious that can be ... What does 
all those lines are supposed to do  ???"

hehe

Shadwolf -> Drunk Coder .....  hum not all the  time but this time 
yes  ..

Hey Shadwolf ... don't miss Ashley's message to you in RebGUI channel!

done  ^^

but then i have a abnormal bug witch means nothing ...