Dweets awesomed by u/robbyg

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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rodrigo.siqueira

remix of d/12037 by u/thorbear

function u(t) {

u=v=t,a=b=.2*S(t)+1.2,c=.7,s=250,x.globalAlpha=.2;for(i=4e3;--i;)w=S(a*v)-c*C(a*u),v=S(b*u)+C(b*v),u=w,x.fillRect(650+s*u*2.5,880+v*s*2,1,1)

Feb 1 2019 6:56 PM UTC

}// 140/140

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Brushstroke (Hassan Massoudy style). #attractor

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robbyg

remix of d/8503 by u/robbyg

function u(t) {

X=Y=t;for(i=2e3;i--;x.fillStyle=`hsl(${C(X+Y)*360},50%,50%)`)h=X,x.fillRect(X=950+(S(1*Y)-C(2*X))*440,Y=550+(S(3*h)-C(4*Y))*230,1,1)

Feb 1 2019 4:59 PM UTC

}// 132/140

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Reworked my #attractor based on the excellent examples from @thorbear and @rodrigo.siqueira

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Xen

remix of d/12072 by u/leoseccia

function u(t) {

for(c.width|=i=40;i--;)for(j=80;j--;x.fillRect(j*30+S(i/s*4)*250-300,i*30+C(j/s*2)*50-50,99,3))s=9/S(t/2)

Feb 1 2019 4:48 PM UTC

}// 105/140

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katkip

remix of d/12067 by u/Kyoushu

function u(t) {

x.clearRect(0,0,1920,1080);for(i=0;i<=1800;i+=0.9){b=t*C(t+i);x.fillRect(S(b)*(960-i)+960,C(b*2)*(540-i/2)+540,10,10);}

Feb 1 2019 2:03 PM UTC

}// 119/140

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u/SMON

whoaaaaa...that is glorious
u/Kyoushu

I love it, it's like some interdimensional squid breaking through
u/katkip

yep <3

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rodrigo.siqueira

remix of d/12039 by u/rodrigo.siqueira

function u(t) {

W=t;for(y=i=950;i--;)x.fillRect(X=950+(S(3*y)+C(W))*440,y=550+(S(3*W)+C(2*y))*230,1,1),W=X

Feb 1 2019 4:12 AM UTC

}// 90/140

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Golfed #attractor in 90 bytes

u/thorbear

nice!

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thorbear

function u(t) {

i=2e3,u=v=t,a=b=1.7,c=0.6,d=1.2,s=240,x.globalAlpha=.01;for(;--i;)w=S(a*v)-c*C(a*u),v=S(b*u)+d*C(b*v),u=w,x.fillRect(960+s*u,540+v*s,4,4)

Jan 31 2019 9:20 PM UTC

}// 137/140

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actual Clifford

u/robbyg

#attractor
u/rodrigo.siqueira

Clifford #pickover Attractor

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katkip

function u(t) {

t/=9;for(i=20;i--;)for(j=20;j--;)x.fillStyle=`hsl(${C(i*i-t)*C(j*j+t)*360} 99%50%)`,x.fillRect(96*i,54*j,86,44)

Jan 29 2019 5:56 PM UTC

}// 111/140

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#disco #color

u/SMON

Uhm...how does one get started making things on this site? :)

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robbyg

remix of d/11535 by u/rodrigo.siqueira

function u(t) {

for(a=b=i=0;i<3e3;i++,x.fillStyle=`hsl(${b/7+a/5},50%,50%)`)r=~~(Math.random()*3),b=r==1?b/4:b+199,x.fillRect(a=(a+956*r)/2,b,1,1)

Jan 28 2019 7:31 PM UTC

}// 130/140

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Rainbow mountains.

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robbyg

function u(t) {

c.width|=0
r=y=>Math.random()*y
a=i=>{for(z=500;z--;)x.fillRect(520+S(t)*400+i*100+r(50),440+r(200),r(5),r(5))}
for(i=9;i--;)a(i)

Jan 28 2019 7:16 PM UTC

}// 129/140

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Static #default

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rodrigo.siqueira

remix of d/11965 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=3e3,i);Q=S(--i*i);x.clearRect(960+150*(S(b)*4+S(i+t)*Q),540+150*(C(i*i)-(t%4>2?T(b+t):S(b+t))),4,4))b=i%6+t+(t%2>1?0:i)

Jan 28 2019 2:40 PM UTC

}// 140/140

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Torus, spheres, flow and bubbles

Show more comments…
u/rnbw

now THIS is a demo!
u/katkip

Yeah he win
u/13thptr

woah
u/joeytwiddle

Superb! Golf the end with i*(t%2>1) or i*!(t&1)
u/rodrigo.siqueira

Thanks @joeytwiddle for the golf trick. i*(t&1) also works and it's even shorter. And I found that t%4>2?... can be converted to t&2?... It works as a counter to change the function each 2 seconds.
u/yonatan

Also, since T and S take the same arguments (t%4>2?T(b+t):S(b+t)) can be (t&2?T:S)(b+t)
u/lionleaf

Wow! Now we're talking
u/vain

Wow, three fx in this tiny code? Great!

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