foxy-moxy/js/fox.js

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const Chance = require('chance')
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const colors = require('./constants/colors.js')
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const hsl = function (h, s, l) {
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return 'hsl(' + h + ',' + s + '%, ' + l + '%)'
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}
const Fox = function (IMG_WIDTH, IMG_HEIGHT, seed) {
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const chance = seed ? new Chance(seed) : new Chance()
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// origin: head top left corner
const kappa = chance.floating({min: 0.2, max: 0.45})
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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)
})()
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const head = {
width: 0.6 * IMG_WIDTH,
height: 0.6 * IMG_HEIGHT,
kappa: kappa,
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color: headColor
}
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const origin = {x: IMG_WIDTH / 2 - head.width / 2, y: 0.5 * IMG_HEIGHT - head.height / 2}
const ears = (function (origin, headWidth, headHeight, headColor) {
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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})
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return {
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color: headColor,
kappa: 0.9 * kappa,
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left: {
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x: origin.x + (headWidth / 2) - offsetX,
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y: origin.y + (0.15 * headHeight),
angle: angle,
width: 0.4 * headWidth,
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height: 0.8 * headHeight
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},
right: {
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x: origin.x + (headWidth / 2) + offsetX,
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y: origin.y + (0.15 * headHeight),
angle: -angle,
width: 0.4 * headWidth,
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height: 0.8 * headHeight
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}
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}
}(origin, head.width, head.height, head.color))
const eyes = (function (origin, headWidth, headHeight) {
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// TODO: color
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const offsetY = chance.floating({min: -0.05 * headHeight, max: -0.025 * headHeight})
const offsetX = chance.floating({min: 0.13 * headWidth, max: 0.25 * headWidth})
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const eyeHeight = chance.floating({min: 0.08 * headHeight, max: 0.13 * headHeight})
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return {
height: eyeHeight,
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width: eyeHeight / 2,
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style: 'ellipse',
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// style: chance.pickone(['ellipse', 'smiley']),
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left: {
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x: origin.x + (headWidth / 2) - offsetX,
y: origin.y + (headHeight / 2) + offsetY
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},
right: {
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x: origin.x + (headWidth / 2) + offsetX,
y: origin.y + (headHeight / 2) + offsetY
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}
}
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}(origin, head.width, head.height))
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const nose = {
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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
}
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const mouth = {
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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)})
}
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head.mask = mask
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return {
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canvas: {
height: IMG_HEIGHT,
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width: IMG_WIDTH,
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color: chance.pickone(Object.keys(colors.bg).map(function (key) { return colors.bg[key] }))
},
head: head,
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ears: ears,
eyes: eyes,
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nose: nose,
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mouth: mouth
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}
}
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module.exports = Fox