Colour bars/Display: Difference between revisions

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where attrs = map color2attr colors
nBars = length colors
colors = [black, brightRed, brightGreen, brightBlue, brightMagenta, brightCyan, brightYellow, brightWhite]
color2attr c = Attr Default Default (SetTo c)
 
main :: IO ()
main = do
cfg <- standardIOConfig
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showBars bounds
shutdown vty</syntaxhighlight>
 
[[File:Haskell_Colourbars_A_0.png|700px]]
 
Graphical version using SFML.
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tput sgr0 # reset</syntaxhighlight>
 
=={{header|Uxntal}}==
<syntaxhighlight lang="uxntal">( uxnasm color-bars.tal color-bars.rom && uxnemu color-bars.rom )
 
|00 @System &vector $2 &expansion $2 &wst $1 &rst $1 &metadata $2 &r $2 &g $2 &b $2 &debug $1 &state $1
|20 @Screen &vector $2 &width $2 &height $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
 
|0100
( set 4 color theme
rgb
color0: 000 - black
color1: f00 - red
color2: 0f0 - green
color3: 00f - blue )
#0f00 .System/r DEO2
#00f0 .System/g DEO2
#000f .System/b DEO2
 
( store bars width )
.Screen/width DEI2 #0004 DIV2 ,&quarter STR2
( set starting position )
#0000 .Screen/y DEO2
 
( draw bars )
#00
&loop
#00 OVR [ LIT2 &quarter $2 ] MUL2
.Screen/x DEO2
DUP #80 ORA .Screen/pixel DEO
INC DUP #04 NEQ ?&loop
BRK</syntaxhighlight>
[[File:Color-bars.png|alt=Color bars task implemented in Uxntal.|thumb|Color bars task implemented in Uxntal.|none]]
=={{header|Wren}}==
{{trans|Go}}
{{libheader|DOME}}
<syntaxhighlight lang="ecmascriptwren">import "graphics" for Canvas, Color
import "dome" for Window
 
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