Dweets awesomed by u/geb

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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Current theme challenge: #Opposites

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rodrigo.siqueira

remix of d/12319 by u/rodrigo.siqueira

function u(t) {

X=Y=Z=T(t)
for(i=2e3;i--;)x.fillStyle=`hsl(${Z*4},43%,38%,35%)`,X+=(Y-X)/9,Y+=X-X*Z/89,Z+=(X*Y-Z)/199,x.fillRect(960+X*24,Z*15-800,1,1)

Mar 5 2019 10:36 PM UTC

}// 135/140

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Lorenz Colors #attractor #lorenz

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nender

function u(t) {

c.width=2e3;x.lineWidth=6;v=1e3;b=187;n=864;for(i=0;i<9;i++){r=n-(n/=1.7);v+=S(i*t)*r;b+=C(i*t)*r;x.beginPath();x.arc(v,b,n,0,8);x.stroke()}

Mar 5 2019 3:48 PM UTC

}// 140/140

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saved a few more chars and upped the line width

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pavel

function u(t) {

eval(unescape(escape`景爨樽㈲㭱㵃⡶㵪ⴭ⼸⤬爽㌰〫ㄵ〪焬稽匨瘩㬩景爨椽ㄱ㐻甽椭⴯ㄸ㭸⹦楬汒散琨㤴㜫爪䌨甩ⰵ㈸⭲⩓⡵⤬㈵ⰲ㔩⥦㴲⩺⨨焪䌨甩⩓⡴⤫稪䌨琩⤭䌨琩ⱸ⹦楬汓瑹汥㵒⡧㵦⩦⨲㔶ⱧⱧ⬲〪昩;`.replace(/u(..)/g,"$1%")))

Mar 5 2019 2:07 AM UTC

}// 132/140

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Two-color phong specular shaded torus

u/pavel

166 for(j=22;q=C(v=j--/8),r=300+150*q,z=S(v);)for(i=114;u=i--/18;x.fillRect(947+r*C(u),528+r*S(u),25,25))f=2*z*(q*C(u)*S(t)+z*C(t))-C(t),x.fillStyle=R(g=f*f*256,g,g+20*f)
u/tomxor

Nice #shading #torus
u/f8f82804

#d3 #phong

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spaceman_blanc

remix of d/5603 by u/Xen

function u(t) {

t?x.fillStyle=`hsla(${t*Z*30},69%,65%,1)`:x.translate(950,Z=540)
for(i=199;i--;x.rotate(t/(Z-i)))x.fillRect(i*8-1e3,-1e3,2,1e3)

Mar 4 2019 9:50 PM UTC

}// 127/140

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Sickly spirals

u/Xen

Nice one
u/aleamb

cool

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pavel

remix of d/701 by u/sigveseb

function u(t) {

for(x[f='fillRect'](i=8,0,2e3,2e3);w=3*i--;)for(x.fillStyle=R(s=666/i,s/2,s/4),k=w*w;b=k--/w|0;a+b&1&&x[f]((a-t%2)*s,(b-2+S(t))*s,s,s))a=k%w

Mar 4 2019 8:47 PM UTC

}// 140/140

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More layers and a black background #improved

u/sigveseb

Nice!

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tomxor

remix of d/12595 by u/tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.5,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=S((X|Y)/(4+Z))/5

Mar 2 2019 11:13 PM UTC

}// 131/140

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Fractal Ocean

u/tomxor

Or puddle depending on your frame rate :D

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tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.6,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=C(2*Z+S((X&Y)/(1+Z*Z))/8)

Mar 2 2019 7:46 PM UTC

}// 140/140

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Fractal Lake

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katkip

function u(t) {

x.fillRect(0,0,2e3,2e3);t||(a=0);for(i=400;i--;)x.clearRect(960+S(a-t)*500*C(a)*S(a+t),540+C(a-t)*500*C(a+t)*S(a),i/10,i/10),a+=C(i/2+t)/3

Mar 1 2019 8:33 PM UTC

}// 138/140

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Acceleration

u/sigveseb

Very fluid

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Xen

remix of d/12582 by u/nini1294

function u(t) {

c.width|=0,x.translate(960,540)
for(i=59;i--;x.arc(C(t*17+i/7)*9,S(t*9+i/2)*9,19*i,0,x.lineWidth=7))x.beginPath(x.stroke())

Mar 1 2019 5:35 PM UTC

}// 123/140

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u/katkip

Once I had eyes

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missfabulous

function u(t) {

c.width=1920
x.translate(960,540)
for(i=0;i<50;i++){
x.rotate(S(t)/16)
x.fillRect(0,0,9,500-i*10)
x.fillRect(0,-500,9,500-i*10)
x.fill()}

Feb 28 2019 12:46 AM UTC

}// 137/140

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dwitter.net | geb (18678)