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index.js
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index.js
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// ColorMaker presets (see template in colormaker.js)
const p = {
baseRanges: {
l: [50, 70],
c: [30, 50]
}
}
const numColors = 7 // palette size
// P5.js sketch -----------------------------
const M = .05,
R = .8
let S, cm, narrow, infos,
lPal = [],
cPal = [],
hPal = []
function setup() {
// randomSeed(1344324855)
S = min(windowHeight / R, windowWidth)
createCanvas(S, S*R)
noLoop()
// Initiate ColorMaker
cm = new ColorMaker(p)
// cm = new ColorMaker(presets.pastel)
// Create new palette
cm.newPalette(numColors)
// Create sorted palettes for display
narrow = numColors > 10
lPal = sortPal('l', 'lch')
cPal = sortPal('c', 'lch')
hPal = sortPal('h', 'lch')
// Store some infos on cm instance to print on canvas
infos = {
'Palette Size': `${numColors} colors`,
'Harmony' : cm.harmonyName.replaceAll('_', ' '),
'Tones' : cm.tonesName.replaceAll('_', ' '),
'Deviations' : `L${~~(cm.deviation.l)} C${~~(cm.deviation.c)} H${~~(cm.deviation.h)}`
}
}
function draw() {
cm.background(cm.color({ l: 95, c:0, h:0 }))
noStroke()
push()
scale(S)
// Top palettes display
let w = (1 - M*2) / cm.palette.length,
h = .1
for (let i = 0; i < numColors; i++) {
let x = M + i * w,
lch = cm.palette[i]
// Big blocks
cm.fill(lch)
rect(x, M, w, h)
// Legend text
cm.fill(getTextCol(lch.l))
textSize(.01)
if (narrow) {
text(`${~~(lch.l)}-${~~(lch.c)}-${~~(lch.h)}`, x + .01, M + h - .01)
} else {
text(`L${~~(lch.l)} C${~~(lch.c)} H${~~(lch.h)}`, x + .01, M + h - .01)
}
// Sorted by Lightness
drawSortedPalette(i, x, w, h, 'l', lPal, 1)
// // Sorted by Chroma
drawSortedPalette(i, x, w, h, 'c', cPal, 2)
// // Sorted by Hue
drawSortedPalette(i, x, w, h, 'h', hPal, 3)
}
// Color wheels
drawWheel('lightness')
drawWheel('chroma')
// Palette infos at bottom
cm.fill(cm.color({ l: 0, c: 0, h: 0 }))
noStroke()
let info = ""
for ([key, val] of Object.entries(infos)) {
if (key.includes('Deviations')) info += ` ${key} ${val}`
else info += ` ${val} . `
}
text(info, M, R-M)
pop()
}
function getTextCol(colL) {
// Returns a grey color with opposite lightness to colL : int
return cm.color({
l: (colL + 50) % 100,
c: 0,
h: 0
})
}
function sortPal(val) {
// Returns a sorted version of cm.palette
// val : string = 'l', 'c' or 'h' (which value to sort by)
let res = [...cm.palette].sort((a, b) => a[val] - b[val])
res.forEach((lch, i) => res[i] = lch)
return res
}
function drawSortedPalette(i, x, w, h, by, lchPal, offset=1) {
// by: str = 'l', 'c' or 'h'
cm.fill(lchPal[i])
rect(x, M+h+(h/3*(offset-1))+.01, w, h/3)
// Legend text
cm.fill(getTextCol(lchPal[i].l))
text(`${~~(lchPal[i][by])}`, x + .01, M + h + h/3 * offset)
if (i === 0) {
fill('black')
text(by.toUpperCase(), x - .02, M + h + h/3 * offset)
}
}
function drawWheel(type) {
let isChroma = type === 'chroma'
let x = isChroma ? .75 : .25
let y = .5
let def = radians(.3)
let steps = 60
noFill()
strokeWeight(.001)
let step = 0
// Draw background gradient
for (let i = 0; i < TAU; i += def) {
step++
let lastx2 = x
let lasty2 = y
for (let j = 0; j < steps + 1; j++) {
let r = (.2 / steps) * j
let col = isChroma ?
cm.color({ l: 70, c: map(j, 0, steps, 0, 131), h: degrees(i) }) :
cm.color({ l: map(j, 0, steps, 0, 100), c: 90, h: degrees(i) })
cm.stroke(col)
let x2 = x + cos(i) * r
let y2 = y + sin(i) * r
line(lastx2, lasty2, x2, y2)
lastx2 = x2
lasty2 = y2
}
}
// Draw concentric circles
hPal.forEach(col => {
let r = isChroma ?
map(col.l, 0, 131, .025, .175) :
map(col.l, 0, 100, .025, .175)
cm.stroke(cm.color({l:30, c:0, h:0}))
noFill()
circle(x, y, r*2)
})
// Draw points
hPal.forEach(col => {
let r = isChroma ?
map(col.l, 0, 131, .025, .175) :
map(col.l, 0, 100, .025, .175)
let angle = radians(col.h)
let x3 = x + cos(angle) * r
let y3 = y + sin(angle) * r
cm.fill(col)
circle(x3, y3, .02)
})
}
function windowResized() {
S = min(windowHeight / R, windowWidth)
resizeCanvas(S, S*R)
draw()
}