var K = document.querySelector('canvas'),
{ random: R, PI, cos: C, sin: S, floor, atan2: A } = Math,
+ r = x => floor(R() * x),
+ id = p => p,
+ spn = rad => p => ({
+ x: p.x + rad * C(l),
+ y: p.y + rad * S(l)
+ }),
+ sqr = i => {
+ var p = pos(i)
+ x.fillRect(p.x, p.y, siz, siz)
+ },
+ crc = i => {
+ var p = pos(i)
+ x.beginPath()
+ x.arc(p.x, p.y, siz / 2, 0, 2 * PI)
+ x.fill()
+ },
+ chs = i => {
+ var p = pos(i)
+ x.beginPath()
+ x.moveTo(p.x, p.y)
+ x.lineTo(p.x * 10 * C(i.a), p.y * 10 * S(i.a))
+ x.lineTo(r(64), r(64))
+ x.fill()
+ },
+ lch = i => {
+
+ var p = pos(i)
+ x.beginPath()
+ x.lineWidth = 5
+ x.strokeStyle = `rgb(${i.c.join(',')})`
+ x.moveTo(p.x, p.y)
+ x.lineTo(p.x * 10 * C(i.a), p.y * 10 * S(i.a))
+ x.stroke()
+ },
+ hrt = i => {
+
+ var p = pos(i)
+ x.fillRect(p.x, p.y, siz, siz)
+
+ x.beginPath()
+ x.arc(p.x + siz / 2, p.y, siz / 2, 0, 2 * PI, false)
+ x.fill()
+ x.closePath()
+
+ x.beginPath()
+ x.arc(p.x + siz, p.y + siz / 2, siz / 2, 0, 2 * PI, false)
+ x.fill()
+ x.closePath()
+ },
+ mov = i => {
+
+ i.x = i.x + spd * C(i.a)
+ i.y = i.y + spd * S(i.a)
+
+ if (i.x < 0 || i.x > 64) {
+ i.a = A(S(i.a), -C(i.a))
+ }
+ if (i.y < 0 || i.y > 64) {
+ i.a = A(-S(i.a), C(i.a))
+ }
+ },
+ ucl = i => i.c = i.c.map(c => (c + 5) % 256),
+ frm = t => {
+
+ window.requestAnimationFrame(frm)
+
+ var dt = t - l
+
+ if (dt > 1000 / f) {
+ clr && x.clearRect(0, 0, 64, 64)
+ for (var i of I) {
+ x.fillStyle = `rgb(${i.c.join(',')})`
+ draw(i)
+ ccl && ucl(i)
+ mov(i)
+ }
+
+ l = t
+ }
+ },
x = K.getContext('2d'),
f = 24,
l = 0,
draw = H[r(H.length)],
pos = P[r(P.length)]
- function r(x) {
- return floor(R() * x)
- }
-
- function sqr(i) {
-
- var p = pos(i)
- x.fillRect(p.x, p.y, siz, siz)
- }
-
- function crc(i) {
-
- var p = pos(i)
- x.beginPath()
- x.arc(p.x, p.y, siz / 2, 0, 2 * PI)
- x.fill()
- }
-
- function chs(i) {
-
- var p = pos(i)
- x.beginPath()
- x.moveTo(p.x, p.y)
- x.lineTo(p.x * 10 * C(i.a), p.y * 10 * S(i.a))
- x.lineTo(r(64), r(64))
- x.fill()
- }
-
- function lch(i) {
-
- var p = pos(i)
- x.beginPath()
- x.lineWidth = 5
- x.strokeStyle = `rgb(${i.c.join(',')})`
- x.moveTo(p.x, p.y)
- x.lineTo(p.x * 10 * C(i.a), p.y * 10 * S(i.a))
- x.stroke()
- }
-
- function hrt(i) {
-
- var p = pos(i)
- x.fillRect(p.x, p.y, siz, siz)
-
- x.beginPath()
- x.arc(p.x + siz / 2, p.y, siz / 2, 0, 2 * PI, false)
- x.fill()
- x.closePath()
-
- x.beginPath()
- x.arc(p.x + siz, p.y + siz / 2, siz / 2, 0, 2 * PI, false)
- x.fill()
- x.closePath()
- }
-
- function id(p) {
-
- return p
- }
-
- function spn(rad) {
- return (p) => ({
- x: p.x + rad * C(l),
- y: p.y + rad * S(l)
- })
- }
-
- function mov(i) {
-
- i.x = i.x + spd * C(i.a)
- i.y = i.y + spd * S(i.a)
-
- (i.x < 0 || i.x > 64) && (i.a = A(S(i.a), -C(i.a)))
- (i.y < 0 || i.y > 64) && (i.a = A(-S(i.a), C(i.a)))
- }
-
- function ucl(i) {
- i.c = i.c.map(c => (c + 5) % 256)
- }
-
- function frm(t) {
-
- window.requestAnimationFrame(frm)
-
- var dt = t - l
-
- if (dt > 1000 / f) {
- clr && x.clearRect(0, 0, 64, 64)
- for (var i of I) {
- x.fillStyle = `rgb(${i.c.join(',')})`
- draw(i)
- ccl && ucl(i)
- mov(i)
- }
-
- l = t
- }
- }
frm()
}