- S = [sqr, crc, hrt, chs, lch],
- P = [id, spn(5), spn(15)],
- draw = S[r(S.length)],
- pos = P[r(P.length)]
+ H = [sqr, crc, hrt, chs, lch], P = [id, spn(5), spn(15)],
+ draw = H[r(H.length)], pos = P[r(P.length)]
+
+ function r(x) {
+ return floor(R() * x)
+ }
+
+ function sqr(i) {
+
+ var {x, y} = pos(i)
+ X.fillRect(x, y, z, z)
+ }
+
+ function crc(i) {
+
+ var {x, y} = pos(i)
+ X.beginPath()
+ X.arc(x, y, z / 2, 0, 2 * PI)
+ X.fill()
+ }
+
+ function chs(i) {
+
+ var {x, y} = pos(i)
+ X.beginPath()
+ X.moveTo(x, y)
+ X.lineTo(x * 10 * C(i.a), y * 10 * S(i.a))
+ X.lineTo(r(64), r(64))
+ X.fill()
+ }
+
+ function lch(i) {
+
+ var {x, y} = pos(i)
+ X.beginPath()
+ X.lineWidth = 5
+ X.strokeStyle = `hsl(0,0%,${i.c}%)`
+ X.moveTo(x, y)
+ X.lineTo(x * 10 * C(i.a), y * 10 * S(i.a))
+ X.stroke()
+ }
+
+ function hrt(i) {
+
+ var {x, y} = pos(i)
+ X.fillRect(x, y, z, z)
+
+ X.beginPath()
+ X.arc(x + z / 2, y, z / 2, 0, 2 * PI, false)
+ X.fill()
+ X.closePath()
+
+ X.beginPath()
+ X.arc(x + z, y + z / 2, z / 2, 0, 2 * PI, false)
+ X.fill()
+ X.closePath()
+ }
+
+ function mov(i) {
+
+ i.x = i.x + s * C(i.a)
+ i.y = i.y + s * S(i.a)
+
+ if (i.x < 0 || i.x > 64) {
+ i.a = A(S(i.a), -C(i.a))
+ }
+ if (i.y < 0 || i.y > 64) {
+ i.a = A(-S(i.a), C(i.a))
+ }
+ }
+
+ function ucl(i) {
+ i.c = (i.c + 2) % 101
+ }
+
+ function frm(t) {
+
+ requestAnimationFrame(frm)
+
+ var dt = t - l
+
+ if (dt > 1000 / f) {
+ k && X.clearRect(0, 0, 64, 64)
+ for (var i of I) {
+ X.fillStyle = `hsl(0,0%,${i.c}%)`
+ draw(i)
+ c && ucl(i)
+ mov(i)
+ }
+
+ l = t
+ }
+ }