World: r3wp

someone tried to adapt FFT  on Rebol ?

btw steeve tried your little demos... nice

demo-ay ?

both scripts on rebol.org

ok

did you try out regraph demo?

i'm not sure

don't remember

on rebol.org ?

it was just a graphic editing engine proof of concept for my dataflow 
engine... of which I am now building the v2 of the graphic engine, 
which allows your graphic elements to render into parrallel layers.

do read http://www.pointillistic.com/open-REBOL/moa/steel/retools/download/regraph.r

i try

the layers will allow us to optimise what gets refreshed and allow 
us to stack some properties of all graphic elements on the same layer, 
even if the graphic elements themselves are rendered as a list (of 
overlapping things)

hum ok, it's more advanced than my try

different concept

btw, i have a question on liquid

yes?

it's your work isn't it ?

moving to liquid group...

(that's not my question)

well, can you synchronise lists or only single values

(did you see the !Liquid group on the left?

by lists, i mean, block of values

sorry

Hi, I have a question concerning color palette conversions.


I have a color palette of greens that I would like to convert to 
blue using the same "look and style" as the green ones. Is this possible?

What does your colour palette look like? e.g. [0.0.100 5.8.189] ?

Robert, convert your colors to HSV and change Hue.

I wrote this before HSV functions were added to /View, but it still 
works: http://www.ross-gill.com/r/hsv-lab.r

But now there are native hsv functions...

This is my colour palette:

	; 7 primary colors
	bn-green: 		0.102.76
	green-field: 	51.133.110
	reed-green:		102.163.146
	patina-green:	153.194.183
	glass-green:	204.224.219
	light-green:	232.241.239
	ash-gray:			209.209.209

	; 7 secondary colors
	midnight: 			0.29.43
	foggy-morning: 	31.93.154
	hazy-day: 			102.154.204
	light-mint:			154.204.205
	terra-cotta: 		205.153.103
	desert-sand:		229.201.115
	sunflower:			254.191.0

It's stated that this palette is specialy designed to harmonize. 
And I want to get a palette being based on blue with the same properties.

REBOL []


colors: [
; 7 primary colors
	bn-green 		0.102.76
	green-field 	51.133.110
	reed-green		102.163.146
	patina-green	153.194.183
	glass-green	204.224.219
	light-green	232.241.239
	ash-gray			209.209.209

	; 7 secondary colors
	midnight 			0.29.43
	foggy-morning 	31.93.154
	hazy-day 			102.154.204
	light-mint			154.204.205
	terra-cotta 		205.153.103
	desert-sand		229.201.115
	sunflower			254.191.0
]

change-colors: func [val /local h hsv][
	forskip colors 2 [
		hsv: rgb-to-hsv colors/2
		h: hsv/1 + val // 255
		hsv/1: h
		colors/2: hsv-to-rgb hsv
	]
	~b1/color: colors/bn-green
	~b2/color: colors/green-field
	~b3/color: colors/reed-green
	~b4/color: colors/patina-green
	~b5/color: colors/glass-green
	~b6/color: colors/light-green
	~b7/color: colors/ash-gray
	~b11/color: colors/midnight
	~b12/color: colors/foggy-morning
	~b13/color: colors/hazy-day
	~b14/color: colors/light-mint
	~b15/color: colors/terra-cotta
	~b16/color: colors/desert-sand
	~b17/color: colors/sunflower	
]

lay: layout [
	across
	~b1: box colors/bn-green
	~b2: box colors/green-field
	~b3: box colors/reed-green
	~b4: box colors/patina-green
	~b5: box colors/glass-green
	~b6: box colors/light-green
	~b7: box colors/ash-gray
	return
	~b11: box colors/midnight
	~b12: box colors/foggy-morning
	~b13: box colors/hazy-day
	~b14: box colors/light-mint
	~b15: box colors/terra-cotta
	~b16: box colors/desert-sand
	~b17: box colors/sunflower
	return
	button "change color" [change-colors 64 show lay]
]
view lay

Thx a lot!! :-)

I will play around with this.

you're welcome :)

Has anyone got experience with this Texturing Tool?
http://www.mapzoneeditor.com/index.php

Or know of a good place to look for texture producing algorithms?

Look towards people in the video game business....they did lots of 
this in the 80-90s

http://www.rebol.org/cgi-bin/cgiwrap/rebol/view-script.r?script=texture-lab.r

It's nothing special, but it works :)

press "Open" to see some presets

Hi, I'm looking for a range of colours from "hot white" to "cool 
blue" to represent molten metal cooling down.
Currently I have this range of 6 colours:

	colors: [white yellow orange red purple navy]

(I interpolate between the colours for more resolution.)

Does anybody know how I can improve these colours ? Any websites 
that are good for this?

I made a RGB<->HSV back in the dawn of time I think newer rebols 
have it built in

using HSV it is trivial to divide your start and end points into 
as many steps as you need

R3 has some RGB<>HSV<>HSB code as mezzanine. Perhaps it can be backported 
to R2.

'hsv-to-rgb and 'rgb-to-hsv are in 2.7.6

I have a white-to-color function 'make-wash-table here.  Principle 
would be similar, I guess...

http://ross-gill.com/r/arrow-style.r

Thanks guys, I know about the hsv-rgb conversion functions, and the 
interpolation can be improved using them, but I really wanted to 
improve the colours specified in the COLORS block. That means I'm 
looking for palettes of ~6 colours which aim to define a colour range 
like that of cooling metal "in the real world". But never mind, while 
it looks really cool to use a range of 6 colours, I'm now more of 
the opinion that it confuses the user interface too much - so I've 
now using a simple 2-colour range !
Thanks Chris for a look at your code.

Anton, isn't the H in HSV what you wanted indeed? The actual real 
life colors...