Dweets awesomed by u/arthyn

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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aaaaaz

function u(t) {

s=()=>S(t*9e9*C(t*8))*.5+.5
v=2e3
i=!t?0:++i%2
x.fillStyle=i?'#000':'#FFF'
x.fillRect(s()*v,0,s()*v,9)
x.drawImage(c,-9,0,v+9,v,9,9,v-19,v)

Sep 11 2020 1:00 AM UTC

}// 140/140

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#storm

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rodrigo.siqueira

remix of d/19897 by u/taupelink

function u(t) {

for(i=170;x.beginPath(),i--;x.fillStyle=`hsl(${t*i} 90%${50+S(i/t)*40}%)`,x.fill())x.arc(960+C(i/9)*(k=(1.05)**(i-t*30)),540+i*S(i/8),k,0,7)

Sep 10 2020 11:33 PM UTC

}// 140/140

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Fading tentaclel #art

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rodrigo.siqueira

remix of d/19882 by u/rodrigo.siqueira

function u(t) {

for(i=190;x.beginPath(),i--;x.fillStyle=`hsl(${t} 90%${S(i/9+t)*i}%)`,x.fill())x.arc(960+C(a=t+i)*(k=(1.05)**i),540+i*S(i),i*(k/999)**2,0,7)

Sep 10 2020 2:54 PM UTC

}// 140/140

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Spinning circles

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mildlybean

function u(t) {

with(x)fillStyle=`hsl(270 66%99%`,fill(arc(960,540,99,0,7)),drawImage(c,-1.5,-1,1923,1082)

Sep 10 2020 12:52 PM UTC

}// 90/140

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I found this cool trick with hsl

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taupelink

remix of d/19890 by u/taupelink

function u(t) {

r=Math.random;for(i=1e3;i--;x.fillRect(960+k*X*C(Y),k*X*S(Y),k/t,k/t))X=r(Y=r(k=50)*4)*k,x.fillStyle=R(h=220*C(X**3/1e3/S(Y)),h/.9,k+h*.9)

Sep 10 2020 5:54 AM UTC

}// 138/140

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d/19903

u/magna

Wooow!
u/magna

(Looks very 3D)

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arthyn

remix of d/19901 by u/arthyn

function u(t) {

eval(unescape(escape`昽⡘ⱙⱮ㴴㌩㴾太夾渿渺昨堯夯㤫ㄬ太夭堪堬渫㐰⤻景爨椽㉥㌻椭ⴻ砮晩汬剥捴⡩ⱴ⨶〬ㄬㄩ⥸⹦楬汓瑹汥㵠桳氨⑻䬽昨椯㡥㐪琪琬琯ㄷ⥽ⰹ㤥Ⱔ筓⡋⼹⤪㤰紥总`.replace(/u(..)/g,"$1%")))

Sep 10 2020 1:13 AM UTC

}// 119/140

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slipping retro

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arthyn

remix of d/19885 by u/arthyn

function u(t) {

f=(X,Y,n=99)=>Y*Y>n?n:f(X/Y/9+1,Y*Y-X*X,n+40);for(i=2e3;i--;x.fillRect(i,t*60,1,1))x.fillStyle=`hsl(${K=f(i/2e3,t/45)},99%,${S(K/9)*90}%`

Sep 10 2020 1:00 AM UTC

}// 137/140

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phallus

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Xen

function u(t) {

eval(unescape(escape`琿挮睩摴栽㔰〺栽㜵㭦潲⡶㵨㭶ⴭ㬩景爨礽栻礭ⴻ砮晩汬剥捴⡶⨴⬹㤬礪㐬丬丩⥦潲⡎㵄㴴㭘㵄⩶⽨ⵄ⼲ⱙ㵄⩹⽨ⵄ⼲ⱚ㵄⼲ⴹⱄ⬽搽⡘⩘⭙⩙⩃⡴⼶⭃⡄ⵘⵙ⤩⭚⩚⤯㤭ㄫ䌨堫琩⩃⡙⵴⤬⸱㱤⩎㬩中㴮1`.replace(/u(..)/g,"$1%")))

Sep 9 2020 6:12 PM UTC

}// 138/140

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#storm http://www.p01.org/tea_storm/

u/tomxor

#raymarching

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taupelink

remix of d/19799 by u/taupelink

function u(t) {

r=Math.random;for(i=z=240;t*9<i--;x.fillRect(X*z,Y*z,i/t,i/t))X=r(Y=r()*5)*8,x.fillStyle='#'+'00CCFFFC63'.substr(4*S(X*X+Y*Y)*S(9/X/Y)&7,3)

Sep 9 2020 5:58 PM UTC

}// 139/140

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d/19893

u/magna

Very nice colours, and I love this dithering technique
u/taupelink

thank you! inspired by techniques from other folks' dweets

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taupelink

remix of d/19865 by u/taupelink

function u(t) {

r=Math.random;for(i=1e3;i--;x.fillRect(k*X*C(Y),k*X*S(Y),99/t,k/t))X=r(Y=r(k=50)*2)*k,x.fillStyle='#'+'000FC3'.substr(k*S(X/k/t**.5)+Y&3,3)

Sep 9 2020 12:07 AM UTC

}// 139/140

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d/19889

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