/
Colors.nim
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Colors.nim
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#=======================================================
# Arturo
# Programming Language + Bytecode VM compiler
# (c) 2019-2023 Yanis Zafirópulos
#
# @file: library/Colors.nim
#=======================================================
## The main Colors module
## (part of the standard library)
#=======================================
# Pragmas
#=======================================
{.used.}
#=======================================
# Libraries
#=======================================
import sequtils, sugar
import vm/lib
#=======================================
# Methods
#=======================================
proc defineSymbols*() =
# TODO(Colors) more potential built-in function candidates?
# labels: library, enhancement, open discussion
builtin "blend",
alias = at,
op = opNop,
rule = PrefixPrecedence,
description = "blend given colors and get result",
args = {
"colorA" : {Color},
"colorB" : {Color}
},
attrs = {
"balance" : ({Floating},"use different mix of color (0.0-1.0, default:0.5)")
},
returns = {Color},
example = """
blend #red #CCCCCC ; => #E66666
..........
blend .balance: 0.75 #red #CCCCCC
; => #D99999
""":
#=======================================================
var balance = 0.5
if checkAttr("balance"):
balance = aBalance.f
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(blendColors(InPlaced.l, y.l, balance)))
else:
push newColor(blendColors(x.l, y.l, balance))
builtin "darken",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "darken color by given percentage (0.0-1.0)",
args = {
"color" : {Color},
"percent" : {Floating}
},
attrs = NoAttrs,
returns = {Color},
example = """
darken #red 0.2 ; => #CC0000
darken #red 0.5 ; => #7F0000
darken #9944CC 0.3 ; => #6B308F
""":
#=======================================================
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(alterColorValue(InPlaced.l, y.f * (-1))))
else:
push newColor(alterColorValue(x.l, y.f * (-1)))
builtin "desaturate",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "desaturate color by given percentage (0.0-1.0)",
args = {
"color" : {Color},
"percent" : {Floating}
},
attrs = NoAttrs,
returns = {Color},
example = """
desaturate #red 0.2 ; => #E61919
desaturate #red 0.5 ; => #BF4040
desaturate #9944CC 0.3 ; => #9558B8
""":
#=======================================================
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(saturateColor(InPlaced.l, y.f * (-1))))
else:
push newColor(saturateColor(x.l, y.f * (-1)))
builtin "grayscale",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "convert color to grayscale",
args = {
"color" : {Color}
},
attrs = NoAttrs,
returns = {Color},
example = """
grayscale #red ; => #808080
grayscale #green ; => #404040
grayscale #FF44CC ; => #A2A2A2
""":
#=======================================================
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(saturateColor(InPlaced.l, -1.0)))
else:
push newColor(saturateColor(x.l, -1.0))
builtin "invert",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "get complement for given color",
args = {
"color" : {Color}
},
attrs = NoAttrs,
returns = {Color},
example = """
print #orange ; #FFA500
invert #orange ; => #0059FF
""":
#=======================================================
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(invertColor(InPlaced.l)))
else:
push newColor(invertColor(x.l))
builtin "lighten",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "lighten color by given percentage (0.0-1.0)",
args = {
"color" : {Color},
"percent" : {Floating}
},
attrs = NoAttrs,
returns = {Color},
example = """
print #lightblue ; #ADD8E6
lighten #lightblue 0.2 ; => #D0FFFF
lighten #lightblue 0.5 ; => #FFFFFF
lighten #9944CC 0.3 ; => #C758FF
""":
#=======================================================
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(alterColorValue(InPlaced.l, y.f)))
else:
push newColor(alterColorValue(x.l, y.f))
builtin "palette",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "create palette using given base color",
args = {
"color" : {Color},
},
attrs = {
"triad" : ({Logical},"generate a triad palette"),
"tetrad" : ({Logical},"generate a tetrad palette"),
"split" : ({Logical},"generate a split complement palette"),
"analogous" : ({Logical},"generate an analogous palette"),
"monochrome": ({Logical},"generate a monochromatic palette"),
"random" : ({Logical},"generate random palette based on color triads"),
"size" : ({Integer},"specify the size of the generated palette")
},
returns = {Block},
example = """
palette.triad #red ; => [#FF0000 #00FF00 #0000FF]
palette.tetrad #red ; => [#FF0000 #80FF00 #00FFFF #7F00FF]
..........
palette.monochrome #red
; => [#FF0000 #D40000 #AA0000 #7F0000 #550000 #2A0000]
palette.monochrome.size:10 #red
; => [#FF0000 #E50000 #CC0000 #B20000 #990000 #7F0000 #660000 #4C0000 #330000 #190000]
..........
palette.analogous #red
; => [#FF0099 #FF0066 #FF0033 #FF0000 #FF3300 #FF6600]
palette.analogous.size:10 #red
; => [#FF00FF #FF00CC #FF0099 #FF0066 #FF0033 #FF0000 #FF3300 #FF6600 #FF9900 #FFCC00]
..........
palette.random #red
; => [#FF0000 #00EC00 #0000D2 #00F000 #0000FF #00FF00]
palette.random.size:10 #red
; => [#FF0000 #00FF00 #0000FF #00FE00 #F30000 #00FD00 #0000ED #EC0000 #00F800 #0000D8]
""":
#=======================================================
if (hadAttr("triad")):
push newBlock(triadPalette(x.l).map((c) => newColor(c)))
elif (hadAttr("tetrad")):
push newBlock(tetradPalette(x.l).map((c) => newColor(c)))
elif (hadAttr("split")):
push newBlock(splitPalette(x.l).map((c) => newColor(c)))
elif (hadAttr("analogous")):
var size = 6
if checkAttr("size"):
size = aSize.i
push newBlock(analogousPalette(x.l, size).map((c) => newColor(c)))
elif (hadAttr("monochrome")):
var size = 6
if checkAttr("size"):
size = aSize.i
push newBlock(monochromePalette(x.l, size).map((c) => newColor(c)))
elif (hadAttr("random")):
var size = 6
if checkAttr("size"):
size = aSize.i
push newBlock(randomPalette(x.l, size).map((c) => newColor(c)))
else:
push newBlock(@[x])
builtin "saturate",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "saturate color by given percentage (0.0-1.0)",
args = {
"color" : {Color},
"percent" : {Floating}
},
attrs = NoAttrs,
returns = {Color},
example = """
print #lightblue ; #ADD8E6
saturate #lightblue 0.2 ; => #A7DBEC
saturate #lightblue 0.5 ; => #9FDFF4
saturate #9944CC 0.3 ; => #A030E0
""":
#=======================================================
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(saturateColor(InPlaced.l, y.f)))
else:
push newColor(saturateColor(x.l, y.f))
builtin "spin",
alias = unaliased,
op = opNop,
rule = PrefixPrecedence,
description = "spin color around the hue wheel by given amount",
args = {
"color" : {Color},
"amount" : {Integer}
},
attrs = NoAttrs,
returns = {Color},
example = """
spin #red 90 ; => #80FF00
spin #red 180 ; => #00FFFF
spin #123456 45 ; => #231256
spin #123456 360 ; => #123456
""":
#=======================================================
if x.kind == Literal:
ensureInPlace()
SetInPlace(newColor(spinColor(InPlaced.l, y.i)))
else:
push newColor(spinColor(x.l, y.i))
#=======================================
# Add Library
#=======================================
Libraries.add(defineSymbols)