Random dweets | Dwitter

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: #Food

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zanella

remix of d/6624 by u/Jezza

function u(t) {

c.width|=0;x.font='10em"';!t&&(π=4,k=1,s=1);k+=2;s*=-1;π+=s*4/k;x.fillText(π.toFixed(15),30,200)

Feb 1 2018 11:13 AM UTC

}// 96/140

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Remix of u/Jezza 's cool idea, but using the Gregory-Leibniz Series, just to show how it converges much more slowly.

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WasifBoomz

function u(t) {

if(t==0)a=b=c=0
c+=t
if(c>5){c=0
a+=60}
if(a>1920){b+=60
a=0}
x.lineWidth=t*5
x.rect(a,b,50,50)
x.stroke()
x.fill()
x.fillStyle="blue"

Apr 11 2019 3:34 PM UTC

}// 135/140

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New_Core

function u(t) {

c.width|=V=960,H=560
s=2*C(t)
for(i=21;i--;)Z=S(t)+C(a=i*1.57+t)+4,x.lineTo(V+(S(a)+S(t/3))/Z*V,H+(i%5>1?(1+s):(-1+s))/Z*H)
x.stroke()

Aug 18 2017 10:17 AM UTC

}// 135/140

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#box #3d

u/13thptr

#d3
u/13thptr

#cube

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taupelink

remix of d/18706 by u/taupelink

function u(t) {

f=(x,y)=>T(x*x)>S(y**3)?f(y-.2,x+.3):T(y%x);for(i=z=1e3;i--;)X=(r=Math.random)()*21,Y=r()*12,x.fillRect(X*90,Y*90,f(X*X,z/Y)<1,f(Y*Y,X)>-1)

Jul 18 2020 8:05 PM UTC

}// 139/140

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d/19451

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Galaxtone

remix of d/7617 by u/dragon7076

function u(t) {

t*=2;for(i=1;i<10;i++)x.beginPath();x.moveTo(960+(i-1)*99*C(t),20*t+(i-1)*99*S(2*t));x.lineTo(960+i*99*C(t-1),20*t+i*99*S(2*t-1));x.stroke()

Apr 16 2018 10:25 AM UTC

}// 140/140

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Change the i<10 to i<5 for smaller results, t*=2 to t*=1 for "higher detail"

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gai

function u(t) {

x.stroke();a=960;b=540;j=1000;x.strokeRect(a-500,b-500,j,j);x.moveTo(a,b);if(t<10){x.lineTo(a+(Math.random()-.5)*j,b+(Math.random()-.5)*j)}

Sep 1 2024 3:24 PM UTC

}// 139/140

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SQUARE

u/SockTaters

Cool! Looks like the map showing where the sun is relative to nearby pulsars on the Voyager Golden Record

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katkip

function u(t) {

c.width*=1;x.lineWidth=9;for(i=111;i--;)x.beginPath(),r=i*C(i/99+t/3+S(i)/999),x.arc(960,540,10+i*9,r,3.14+r),x.stroke()

Jun 6 2019 2:40 PM UTC

}// 120/140

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tomxor

remix of d/21120 by u/tomxor

function u(t) {

for(c.width&=i=8320;i--;)
x.fillRect(X=i&127,Y=i>>7,1,Y/4-8>T(T(d=S(X/4)*S(Y/4+t*4)))&&.5+d/4)

Jan 4 2021 2:21 PM UTC

}// 94/140

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Shaded

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bandaloo

remix of d/18968 by u/bandaloo

function u(t) {

i=~~(t*9);j=~~(i/44);k=i%44;x.fillStyle=`hsl(${(k&j)*i},40%,${50+C(t)*10}%`;x.fillRect(k*48,0,48,1);x.drawImage(c,0,k)

Jun 1 2020 11:22 PM UTC

}// 118/140

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stripes on stripes

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anotherkitten

function u(t) {

t=Math.min(t,3);c.style.background=R();x.fillStyle=frame&4?R():"#fff";x.font=x.fillText("puke",t,t,x.drawImage(c,t*1.8,t))||"50px a"

Feb 21 2019 1:54 AM UTC

}// 132/140

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ghost train made of puke