This commit is contained in:
Jeffrey Sun 2017-06-13 18:37:52 -07:00
parent a8ca633a11
commit fabc7c87bc
3 changed files with 157 additions and 25 deletions

118
js/fox-america.js Normal file
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@ -0,0 +1,118 @@
const Chance = require('chance')
const colors = require('./constants/colors.js')
const hsl = function (h, s, l) {
return 'hsl(' + h + ',' + s + '%, ' + l + '%)'
}
const Fox = function (IMG_WIDTH, IMG_HEIGHT, seed) {
const chance = seed ? new Chance(seed) : new Chance()
// origin: head top left corner
const kappa = chance.floating({min: 0.2, max: 0.45})
chance.bool()
chance.bool()
const headColor = (function () {
const level = chance.floating({min: 0, max: 1})
const result = []
const min = colors.head.brick
const max = colors.head.yellow
for (let i = 0; i < min.length; i++) {
result.push(min[i] + (max[i] - min[i]) * level)
}
return hsl.apply(null, result)
})()
const head = {
width: 0.6 * IMG_WIDTH,
height: 0.6 * IMG_HEIGHT,
kappa: kappa,
color: headColor
}
const origin = {x: IMG_WIDTH / 2 - head.width / 2, y: 0.5 * IMG_HEIGHT - head.height / 2}
const ears = (function (origin, headWidth, headHeight, headColor) {
const offsetX = chance.floating({min: 0.17 * headWidth, max: 0.2 * headWidth})
const angle = chance.floating({min: 0.05 * Math.PI, max: 0.2 * Math.PI})
return {
color: headColor,
kappa: 0.9 * kappa,
left: {
x: origin.x + (headWidth / 2) - offsetX,
y: origin.y + (0.15 * headHeight),
angle: angle,
width: 0.4 * headWidth,
height: 0.8 * headHeight
},
right: {
x: origin.x + (headWidth / 2) + offsetX,
y: origin.y + (0.15 * headHeight),
angle: -angle,
width: 0.4 * headWidth,
height: 0.8 * headHeight
}
}
}(origin, head.width, head.height, head.color))
const eyes = (function (origin, headWidth, headHeight) {
// TODO: color
const offsetY = chance.floating({min: -0.05 * headHeight, max: -0.025 * headHeight})
const offsetX = chance.floating({min: 0.13 * headWidth, max: 0.25 * headWidth})
const eyeHeight = chance.floating({min: 0.08 * headHeight, max: 0.13 * headHeight})
return {
height: eyeHeight,
width: eyeHeight / 2,
style: 'ellipse',
// style: chance.pickone(['ellipse', 'smiley']),
left: {
x: origin.x + (headWidth / 2) - offsetX,
y: origin.y + (headHeight / 2) + offsetY
},
right: {
x: origin.x + (headWidth / 2) + offsetX,
y: origin.y + (headHeight / 2) + offsetY
}
}
}(origin, head.width, head.height))
const nose = {
x: origin.x + (head.width / 2),
y: (eyes.left.y + chance.floating({min: 0.2, max: 0.4}) * (origin.y + head.height - eyes.left.y)),
width: chance.floating({min: 0.03, max: 0.04}) * head.width,
height: chance.floating({min: 0.03, max: 0.04}) * head.width
}
const mouth = {
x: origin.x + (head.width / 2),
y: (nose.y + chance.floating({min: 0.2, max: 0.35}) * (origin.y + head.height - nose.y)),
width: chance.floating({min: 0.08, max: 0.15}) * head.width,
height: chance.floating({min: 0.03, max: 0.06}) * head.width,
style: chance.pickone(['smirk', 'cat', 'none'])
}
const mask = {
width: chance.floating({min: 0.5 * IMG_WIDTH, max: IMG_WIDTH}),
height: chance.floating({min: 1.7 * (IMG_HEIGHT - eyes.left.y), max: 1.85 * (IMG_HEIGHT - eyes.left.y)})
}
head.mask = mask
return {
canvas: {
height: IMG_HEIGHT,
width: IMG_WIDTH,
color: chance.pickone(Object.keys(colors.bg).map(function (key) { return colors.bg[key] }))
},
head: head,
ears: ears,
eyes: eyes,
nose: nose,
mouth: mouth
}
}
module.exports = Fox

View file

@ -1,5 +1,4 @@
const Chance = require('chance') const Chance = require('chance')
const colors = require('./constants/colors.js')
const hsl = function (h, s, l) { const hsl = function (h, s, l) {
return 'hsl(' + h + ',' + s + '%, ' + l + '%)' return 'hsl(' + h + ',' + s + '%, ' + l + '%)'
@ -11,22 +10,15 @@ const Fox = function (IMG_WIDTH, IMG_HEIGHT, seed) {
// origin: head top left corner // origin: head top left corner
const kappa = chance.floating({min: 0.2, max: 0.45}) const kappa = chance.floating({min: 0.2, max: 0.45})
const headColor = (function () { const hue = chance.integer({min: 5, max: 50})
const level = chance.floating({min: 0, max: 1}) const saturation = chance.integer({min: 70, max: 90})
const result = [] const lightness = chance.integer({min: 40, max: 60})
const min = colors.head.brick
const max = colors.head.yellow
for (let i = 0; i < min.length; i++) {
result.push(min[i] + (max[i] - min[i]) * level)
}
return hsl.apply(null, result)
})()
const head = { const head = {
width: 0.6 * IMG_WIDTH, width: 0.6 * IMG_WIDTH,
height: 0.6 * IMG_HEIGHT, height: 0.6 * IMG_HEIGHT,
kappa: kappa, kappa: kappa,
color: headColor color: hsl(hue, saturation, lightness)
} }
const origin = {x: IMG_WIDTH / 2 - head.width / 2, y: 0.5 * IMG_HEIGHT - head.height / 2} const origin = {x: IMG_WIDTH / 2 - head.width / 2, y: 0.5 * IMG_HEIGHT - head.height / 2}
@ -102,7 +94,11 @@ const Fox = function (IMG_WIDTH, IMG_HEIGHT, seed) {
canvas: { canvas: {
height: IMG_HEIGHT, height: IMG_HEIGHT,
width: IMG_WIDTH, width: IMG_WIDTH,
color: chance.pickone(Object.keys(colors.bg).map(function (key) { return colors.bg[key] })) color: hsl(
chance.integer({min: 0, max: 360}),
chance.integer({min: 0, max: 100}),
chance.integer({min: 10, max: 100})
)
}, },
head: head, head: head,
ears: ears, ears: ears,

View file

@ -12,15 +12,37 @@ const sanitize = require('sanitize-filename')
const Canvas = require('canvas') const Canvas = require('canvas')
const Fox = require('./js/fox.js') const Fox = require('./js/fox.js')
const FoxAmerica = require('./js/fox-america.js')
const renderFox = require('./js/render-fox.js') const renderFox = require('./js/render-fox.js')
function composeImage (width, height, seed) { function composeImage (width, height, seed, version) {
seed = seed || uuid() seed = seed || uuid()
const fox = Fox(width, height, seed) let fox
switch (version) {
case 2:
// America-color bg and fox
fox = FoxAmerica(width, height, seed)
break
default:
// original fox
fox = Fox(width, height, seed)
}
const canvas = new Canvas(width, height) const canvas = new Canvas(width, height)
renderFox(canvas, fox) renderFox(canvas, fox)
return canvas return canvas
}; }
function getFox (req, res, version) {
let width = parseInt(req.params.width) || 400
if (width > 400) width = 400
const seed = sanitize(req.params.seed) || uuid()
const canvas = composeImage(width, width, seed, version)
const buffer = canvas.toBuffer()
res.set('Cache-Control', 'max-age=' + cacheTimeout)
res.set('Content-length', buffer.length)
res.type('png')
res.end(buffer, 'binary')
}
const cacheTimeout = 60 * 60 * 24 * 30 const cacheTimeout = 60 * 60 * 24 * 30
const app = express() const app = express()
@ -30,15 +52,11 @@ app.get('/healthcheck', (req, res) => {
}) })
app.get('/:width/:seed', (req, res) => { app.get('/:width/:seed', (req, res) => {
let width = parseInt(req.params.width) || 400 getFox(req, res, 1)
if (width > 400) width = 400 })
const seed = sanitize(req.params.seed) || uuid()
const canvas = composeImage(width, width, seed) app.get('/2/:width/:seed', (req, res) => {
const buffer = canvas.toBuffer() getFox(req, res, 2)
res.set('Cache-Control', 'max-age=' + cacheTimeout)
res.set('Content-length', buffer.length)
res.type('png')
res.end(buffer, 'binary')
}) })
module.exports = app module.exports = app