Dweets awesomed by u/Pascal

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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BackendForth

function u(t) {

c.width|=0
for(i=2;i--;)
for(j=0;j<6.28;j+=6.28/9)
{w=99/(S(t+j)+2)
x.fillRect(i*960+400+C(t+j)*400+w*i,540-w/2-S(t*9+j)*99,w,w)
}

Apr 5 2021 6:22 PM UTC

}// 130/140

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#stereograph Cross your eyes until the images are on top of each other for a 3d effect!

u/taupelink

whoa
u/magna

Nice! I relax my eyes (i.e. as if looking at a distance) instead of crossing. Then the smallar squares appear closer, not farther away. But amazing regardless! More of this technique please!

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Pascal

function u(t) {

c.width=48;for(i=1296;i--;x.fillRect(X,Y,1,1))X=i%48,Y=(i-X)/48,x.fillStyle=R(127+127*(C(X/20+t+S(2*t+Y/7))*C(-t/2.1+X/9+Y/14)))

Apr 3 2021 8:27 PM UTC

}// 128/140

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screensaver

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Pascal

function u(t) {

f=(X,Y,n=100)=>Y*S(X)<3&&n>0?f(X*X-Y*Y-1.5,2*X*Y,n-3):n/55
for(i=1080;i--;)x.fillRect(X=t*120,1080-i,2,(1-f(X/9e3+.1,i/9e3+.15)**2)**3)

Apr 1 2021 1:15 PM UTC

}// 135/140

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flower shadows

u/Xen

nice
u/DataMeta

neat #nature - or neature if you will

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Pascal

remix of d/22252 by u/Pascal

function u(t) {

for(c.width|=0,i=2300;i--;x.fillRect((X*100+((1e3+T(t+Y))**(1/C(t)))*300)%1995-25,Y*10,50,10))X=i%21,Y=(i-X)/21

Mar 29 2021 9:55 PM UTC

}// 111/140

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tv static

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Pascal

function u(t) {

for(c.width|=i=128;i--;x.fillRect((X*100+(.5+S(t+Y)/2)*300)%1998-50,Y*210,50,210))X=i%21,Y=(i-X)/21

Mar 29 2021 9:38 PM UTC

}// 99/140

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#default wall

u/BackendForth

Great illusion, tried it once before: https://www.dwitter.net/d/6575

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Pascal

function u(t) {

for(c.width|=i=2;i--;x.fillRect(860+200*S(a=t*2+i*3.14),440+99*C(a),250,250))c.style.filter=`blur(4vw)contrast(99`,x.fillStyle=R(255*S(t))

Mar 29 2021 9:19 PM UTC

}// 139/140

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mitosis

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Pascal

remix of d/21743 by u/Pascal

function u(t) {

for(c.width|=i=w=1e3;i--;c.style.filter=`blur(.2vw)contrast(99`)x.lineTo(w+w*(1.5*C(a=i*3+t))/(z=S(a)-3.5),540+w*(2*S(i)**2-1)/z)
x.stroke()

Mar 28 2021 6:35 PM UTC

}// 140/140

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abstract

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Pascal

remix of d/22172 by u/Pascal

function u(t) {

for(c.width|=i=162;i--;x.fillRect(540+C(t+a**50)*300+(a=i%9)*99,400+(i-a)/9*11,50,11))x.fillStyle=R((a=S(i+t)*S(t+Math.random())**999)*255)

Mar 28 2021 6:10 PM UTC

}// 139/140

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#default #glitch with red

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Pascal

remix of d/22172 by u/Pascal

function u(t) {

for(c.width|=i=162;i--;)x.fillRect(550+300*T(t*2+(S(i*i+t)*S(t*3))**7)/50+(a=i%9)*100,400+(i-a)/9*11*(1-3*S(i*i+t)*S(t*3)**299),50,11)

Mar 27 2021 9:00 PM UTC

}// 134/140

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u/doughno

#default
u/magna

#glitch
u/andrea270872

very "old TV"! great

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Pascal

function u(t) {

c.width|=0
for(i=162;i--;)x.fillRect(500+300*T(t+(S(i*i)*S(t))**7)/5+(a=i%9)*100,400+(i-a)/9*11,50,11)

Mar 27 2021 8:37 PM UTC

}// 102/140

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#default #glitch

dwitter.net | Pascal (3010)