Dweets awesomed by u/pavel

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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KilledByAPixel

function u(t) {

for(w=c.width&=i=10368;i--;S[i]=S[i]+C[i]/4||0)x.fillRect(i%w,i/w,1,C[i]=T(i*i*t)>1e5?9:C[i]*.9-(4*S[i]-S[i-1]-S[i+1]-S[i-w]-S[i+w])/5||0)

May 30 2021 9:39 PM UTC

}// 138/140

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Water Ripples 💧

u/aleamb

#water
u/KilledByAPixel

more golfed... for(w=c.width&=i=10368,R=R-1?1:w;i--;S[i]=S[i]+C[i]/4||0)x.fillRect(i%w,i/w,1,C[i]=T(i*t)>5e4?9:C[i]*.9-(2*S[i]-S[i-R]-S[i+R])/3||0)
u/tomxor

#automata (von-neuman outer-totalistic r=1)
u/KilledByAPixel

another byte saved... for(w=c.width&=i=10368,R=R-1?1:w;i--;S[i]=S[i]+v/4||0)x.fillRect(i%w,i/w,1,v=C[i]=T(i*t)>5e4?9:C[i]*.9-(2*S[i]-S[i-R]-S[i+R])/3||0)
u/vain

cool 2d water drop fx

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KilledByAPixel

remix of d/22883 by u/tomxor

function u(t) {

for(c.width=w=64,a=S(t),p=3e3;B=p--/1e3;x.fillRect(p%w,p/w,2-7/T,T=1))for(A=p%w/32-1;(9-T*A-T*a^t*9+w+T*B|6-T*A*a+T)%15>1;T+=.1);

May 28 2021 10:49 PM UTC

}// 129/140

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Voxel Descent ⛏️

u/KilledByAPixel

More golfed... for(c.width=w=64,p=3e3;p--;x.fillRect(p%w,p/w,2-7/T,T=1))for(A=p%w/32-1;(9-T*A-T*R^t*9+w+T*p/1e3^6-T*A*R+T)&3;T+=.1)R=S(t)
u/tomxor

#raymarching

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KilledByAPixel

remix of d/15036 by u/KilledByAPixel

function u(t) {

s=(a,b,p)=>b*(p*=p*(3-2*p))+a-a*p
r=X=>C(X&Y)
l=_=>s(r(X),r(X+1),X%1)
for(i=2e3;X=--i/40;x.fillRect(i,t*99-n*9,3,n))n=s(l(Y=t*3),l(Y++),Y%1)

May 25 2021 3:07 PM UTC

}// 140/140

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Melt Sierpinski

u/taupelink

excellent
u/erin

has GLSL vibes
u/tomxor

I'll take the two middle ones, to go, hot please
u/Xen

nice!
u/magna

Deep dream vibes

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New_Core

function u(t) {

for(i=a=500;i--;x.fillRect(960+(t*t*C(i*1.57+t)+a*S(v=i>>2)*3)*Z,800+(200-t*60)*Z,Z*9,Z))Z=99/(i%a+a/7),x.fillStyle="#0505"

May 23 2021 1:39 PM UTC

}// 124/140

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u/rep_movsd

Alien plants
u/andrea270872

cool code. I was looking for recursion... but nope. Just a smart FOR :)
u/Xen

love it!
u/miratcan

great

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rep_movsd

remix of d/22844 by u/erin

function u(t) {

t*=w=1e3
with(x)for(j=2;j--;beginPath(fill()))for(i=w;i--;arc(t*50%2e3,t**1.2,t?j?80+S(i/20)*70:19:1e4,a=i/99,a))fillStyle=R(t*w,j*w,j*w);

May 22 2021 1:00 PM UTC

}// 138/140

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t*=w=1e3 with(x)for(j=2;j--;beginPath(fill()))for(i=w;i--;arc(t*50%2e3,t**1.2,t?j?80+S(i/20)*70:19:1e4,a=i/99,a))fillStyle=R(t*w,j*w,j*w);

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erin

remix of d/22839 by u/KilledByAPixel

function u(t) {

t*=w=1e3
with(x)for(j=2;j--;beginPath(fill()))for(i=w;i--;arc(t*50%2e3,t,t?j?60+S(i/14)*30:19:1e4,a=i/99,a))fillStyle=R(t*w,210,j*w);

May 22 2021 1:12 AM UTC

}// 133/140

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Daisy Field

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New_Core

function u(t) {

for(c.width|=i=a=540;i--;x.fillRect(960+a*S(v=i>>2)*Z,a+a*C(v)*Z,b=Z*50,b))Z=99/((i-t*99)%a+a),x.fillStyle=`hsl(${i},99%,${(a/Z/20)-i%4*9}%`

May 20 2021 6:26 PM UTC

}// 140/140

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u/miratcan

what is $ for?
u/magna

x.fillCube()
u/rep_movsd

${x} surrounded by backticks is ES6 javascript syntax - it puts the value of x in the string
u/Agnes

${} is usually more characters than string concatenation, but if you're doing mathematics in the expression (like "(a/Z/20)-i%4*9" here) you end up needing to surround it with so many parentheses if you're doing string concatenation that template strings are handier.
u/Agnes

${} is usually more characters than string concatenation, but if you're doing mathematics in the expression (like "(a/Z/20)-i%4*9" here) you end up needing to surround it with so many parentheses if you're doing string concatenation that template strings are handier.

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tato

function u(t) {

c.width = 1920;
for(i=0;i<10;i++){
x.font = '480px a';
x.fillStyle=R(50*i*S(t),80*C(t),50)
x.fillText("hi",390+Math.abs(S(t+i/10))*780,720)}

May 14 2021 3:22 PM UTC

}// 140/140

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u/Xen

Welcome to the dwitter family!
u/tato

thank you! :-)
u/bubba2k

doxxed

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BackendForth

function u(t) {

c.width|=0
for(i=99;i--;)x.arc(i*(70+t*5),540,(t-i<0?0:t-i)*99,0,7)
x.stroke()

May 6 2021 12:55 PM UTC

}// 78/140

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breaking the sound barrier

u/Xen

nice concept!

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Xor

function u(t) {

for(i=w=1920;i--;)d=t*60*w+i,a=d%w,b=(d-a)/w,g=1.5+((a*a+b*b)/w-a-b)/w*4,x.fillRect(a,b,g>0?g**.3:C(a*g/90+S(b/79))*S(b/99+S(a/70))/8,1)

Apr 29 2021 4:44 AM UTC

}// 136/140

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Moonset

dwitter.net | pavel (31985)