X-Git-Url: https://git.r.bdr.sh/rbdr/r.bdr.sh/blobdiff_plain/41fd02f65fa8913a448f4e54474bbd9c68e3cff5..HEAD:/js/animation.js?ds=inline diff --git a/js/animation.js b/js/animation.js index 386e341..df1673e 100644 --- a/js/animation.js +++ b/js/animation.js @@ -1,110 +1,97 @@ (function () { - if (window.matchMedia('(prefers-reduced-motion: reduce)').matches) return - - var K = document.querySelector('canvas'), - { random: R, PI, cos: C, sin: S, atan2: A } = Math, - id = p => p, - spn = rad => p => ({ - x: p.x + rad * C(l), - y: p.y + rad * S(l) - }), - X = K.getContext('2d'), F = X.fill.bind(X), B = X.beginPath.bind(X), - f = 24, l = 0, s = 1, z = 5 + r(10), - k = R() > 0.5, c = R() > 0.5, - I = Array(r(10) + 6).fill().map(() => ({ - x: r(64), y: r(64), - a: R() * 2 * PI, c: r(100) - })), - H = [sqr, crc, hrt, chs, lch], P = [id, spn(5), spn(15)], - draw = H[r(H.length)], pos = P[r(P.length)], - Z = 1 - - function r(x) { - return ~~(R() * x) - } - - function sqr(i) { - var p = pos(i) - X.fillRect(p.x, p.y, z, z) - } - - function crc(i) { - var p = pos(i) - B() - X.arc(p.x, p.y, z / 2, 0, 2 * PI) - F() - } +if (window.matchMedia('(prefers-reduced-motion: reduce)').matches) return + +var K=document.querySelector('canvas'), +{random:R,PI,cos:C,sin:S,atan2:A} = Math, +id = p => p, +spn = r => p => ({ + x: p.x + r * C(l), + y: p.y + r * S(l) +}), +X = K.getContext('2d'), F = X.fill.bind(X), B = X.beginPath.bind(X), +f = 24, l = 0, s = 1, z = 5 + r(10), +k = R() > 0.5, c = R() > 0.5, +I = Array(r(10) + 6).fill().map(() => ({ + x: r(64), y: r(64), + a: R() * 2 * PI, c: r(100) +})), +H = [sqr, crc, hrt, chs, lch], P = [id, spn(5), spn(15)], +dr = H[r(H.length)], pos = P[r(P.length)], +Z = 1 + +function r(x) { + return ~~(R() * x) +} +function sqr(i) { + var p = pos(i) + X.fillRect(p.x, p.y, z, z) +} +function crc(i) { + var p = pos(i) + B() + X.arc(p.x, p.y, z / 2, 0, 2 * PI) + F() +} +function chs(i) { + var {x, y} = pos(i) + B() + X.moveTo(x, y) + X.lineTo(x * 10 * C(i.a), y * 10 * S(i.a)) + X.lineTo(r(64), r(64)) + F() +} +function lch(i) { + var {x, y} = pos(i) + B() + X.lineWidth = 5 + X.strokeStyle = `hsl(0,0%,${i.c}%)` + X.moveTo(x, y) + X.lineTo(x * 10 * C(i.a), y * 10 * S(i.a)) + X.stroke() +} +function hrt(i) { + var {x, y} = pos(i) + X.fillRect(x, y, z, z) + + B() + X.arc(x + z / 2, y, z / 2, 0, 2 * PI, false) + F() + X.closePath() + + B() + X.arc(x + z, y + z / 2, z / 2, 0, 2 * PI, false) + F() + X.closePath() +} +function mv(i) { + i.x = i.x + s * C(i.a) + i.y = i.y + s * S(i.a) - function chs(i) { - var {x, y} = pos(i) - B() - X.moveTo(x, y) - X.lineTo(x * 10 * C(i.a), y * 10 * S(i.a)) - X.lineTo(r(64), r(64)) - F() + if (i.x < 0 || i.x > 64) { + i.a = A(S(i.a), -C(i.a)) } - - function lch(i) { - var {x, y} = pos(i) - B() - X.lineWidth = 5 - X.strokeStyle = `hsl(0,0%,${i.c}%)` - X.moveTo(x, y) - X.lineTo(x * 10 * C(i.a), y * 10 * S(i.a)) - X.stroke() + if (i.y < 0 || i.y > 64) { + i.a = A(-S(i.a), C(i.a)) } - - function hrt(i) { - var {x, y} = pos(i) - X.fillRect(x, y, z, z) - - B() - X.arc(x + z / 2, y, z / 2, 0, 2 * PI, false) - F() - X.closePath() - - B() - X.arc(x + z, y + z / 2, z / 2, 0, 2 * PI, false) - F() - 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) { + if (Z) 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%,${i.c}%)` + dr(i) + c && ucl(i) + mv(i) } - } - function ucl(i) { - i.c = (i.c + 2) % 101 + l = t } - - function frm(t) { - if (Z) requestAnimationFrame(frm) - - var dt = t - l - - if (dt > 1000 / f) { - k && X.clearRect(0, 0, 64, 64) - for (var i of I) { - X.fillStyle = `hsl(0,0%,${i.c}%)` - draw(i) - c && ucl(i) - mov(i) - } - - l = t - } - } - - K.addEventListener('click', () => (Z=0)) - frm() } -)() + +K.addEventListener('click', () => ((Z=Z?0:1)&&frm())) +frm() +})()