Top dweets by u/dnmc

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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dnmc

function u(t) {

r=Math.random
j=960+S(t)*400
k=540+C(t)*400
for(i=0;i++<80*t;){
j+=r()*8-4
k+=r()*8-4
x.fillStyle=R(0,(S(t*4)+1)*127)
x.fillRect(j,k,6,6)
}

Nov 17 2020 7:07 AM UTC

}// 139/140

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It's the circle of life...

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dnmc

function u(t) {

for(q=0;q<192;q++)
for(w=0;w<108;w++){
x.fillStyle=R(0,127*(1+S(20*t+q*q+w*w+q*w)))
x.fillRect(q*10,w*10,10,10)
}

Nov 17 2020 5:59 AM UTC

}// 113/140

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Snakeskin

u/tomxor

Neat!

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dnmc

function u(t) {

j=this.j||[[0,1080],[960,0],[1920,1080]]
k=this.k||[960,0]
o=j[0^Math.random()*3]
k=[(k[0]+o[0])/2,(k[1]+o[1])/2]
x.fillRect(k[0],k[1],6,6)

Nov 16 2020 4:33 AM UTC

}// 140/140

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Slowpinski

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dnmc

function u(t) {

if(!window.p)p=0;
p=++p%150;
c.width=1920
for(q=0;q<192;q++)
for(w=0;w<108;w++)
if((q&w)%p==0){x.fillRect(q*10,w*10,10,10)}

Nov 15 2020 8:39 PM UTC

}// 124/140

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Sierpinski

u/tomxor

Sierpinski rain! :P

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dnmc

function u(t) {

c.width=1920
for(q=0;q<192;q++)for(w=0;w<108;w++)if(q*w%Math.round(S(t/5)*50)!=0){x.fillStyle=R(C(t)*200);x.fillRect(q*10,w*10,10,10)}

Nov 14 2020 5:11 AM UTC

}// 134/140

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Mystery boxes

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dnmc

function u(t) {

c.width=1000
for(i=1;i<100;i++)
for(j=1;j<100;j++) {
x.fillStyle=R(255*i/j/(1+C(t)),0,j*j/i/(1+S(t))/50*255);
x.fillRect(i*10,j*10,10,10)
}

Nov 14 2020 5:26 AM UTC

}// 139/140

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Waves

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dnmc

function u(t) {

Y=(a)=>(a+1)/2
r=(c)=>Math.random()*c
x.fillStyle=R(Y(S(t))*255,r(200),r(200))
x.fillRect(Y(C(t))*1900,Y(S(t*t))*800,50,Y(S(t))*200+40)

Nov 14 2020 5:46 AM UTC

}// 135/140

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dnmc

function u(t) {

B=300
c.width=2e3
x.font=(C(S(t*6)))*99+"px serif"
for(i=20;i--;)
x.fillText("lugubrious".slice(0,t+1),B+B+B*S(t-i),B+B+B*C(t+i))

Nov 20 2020 6:19 AM UTC

}// 129/140

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dnmc

remix of d/20665 by u/Xen

function u(t) {

X=960
Y=540
x.strokeStyle=`hsl(${80*t},90%,60%)`
x.strokeRect(X*t,Y,90,9);
x.translate(X,Y)
x.rotate(1/Y)
x.translate(-X,-Y)
if(t>.01)u(t/2)

Nov 18 2020 8:15 AM UTC

}// 140/140

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Ribbons

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dnmc

function u(t) {

w=window
p=(w['p']||0)%100
q=(w['q']+5)%1920||0
r=(w['r']+ ++p/10)%1080||0
x.fillStyle=R(255,r*.24,q*.13)
x.fillRect(q,r,10,10)

Nov 16 2020 5:02 AM UTC

}// 127/140

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Rainbow rain

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