Top dweets by u/BriSeven

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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BriSeven

remix of d/291 by u/iverjo

function u(t) {

t=t%4;if(t<.1)r=X=Y=0,W=c.width=960,H=540;for(i=W*4;i--;)x.fillRect(X=(X+S(r+=C(t*i*r))%W+W)%W,Y=(Y+C(r)%H+H)%H,A=5/(1+t*9),A)

Jan 1 2017 12:01 AM UTC

}// 126/140

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u/donbright

the gray scale is what makes this awesome

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BriSeven

function u(t) {

eval(unescape(escape`挮睩摴桼㵮㴶㐻景爨樽渻樭ⴻ⥦潲⡩㵮㭩ⴭ㭸⹦楬汒散琨ⴲ㔬㠰⭃⡡⨴⵴⨴〩⨳〭䌨㌪樯渫㤩⨵〬㈰ⰲ〩⥸⹦楬汓瑹汥㵒⠲㔵⵪⨳ⱪ⤬砮獥瑔牡湳景牭⡃⡡㴶⸲㠪椯渫琩⨲ⱓ⡡⤬ⵓ⡡⤪㈬䌨愩ⰹ㔰ⰵ〰⭪⨷⤠`.replace(/u(..)/g,"$1%")))

Apr 14 2020 11:28 AM UTC

}// 139/140

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A tasty bella pepper.

u/sigveseb

Mmm makes me hungry
u/BriSeven

Ages ago I had a super long dweet that I couldn't post, that was something like 3d lighted aliens made from randomized particles. The trickiest thing about them was the z-sorting. But, you kinda get that for free if you carefully draw in layers along the axis you're rotating on. Painter's algorithm in essence, but the data is structured so you don't have to run a sort.
u/BriSeven

one of these days I'll understand the BSP algorithm

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BriSeven

function u(t) {

c.width*=1
for(i=64;i--;)x.setTransform(C(n=t+C(t)*i/40)*2,S(n),-S(n)*2,C(n),950,400+i*5),x.font='5cm A',x.fillText([...'🤚'][i%1],-60,40)

Apr 6 2020 2:45 AM UTC

}// 137/140

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Jelly Hand

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BriSeven

function u(t) {

if(!t)d=[];c.width=1920;X=Y=0; for(i=0;i<1e4;i++) D=(d[i]||1),d[i]=D+S(D*t*i)/9, x.fillRect(X+=C(d[i])*5, Y+=S(d[i])*5, 5, 5)

Nov 23 2017 8:16 AM UTC

}// 125/140

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A mutating (pseudo)random walk.

u/magna

Awesome!
u/donbright

brilliant

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BriSeven

remix of d/18155 by u/BriSeven

function u(t) {

c.width*=1
for(i=64;i--;)x.setTransform(C(n=t+C(t)*i/40)*2,S(n),S(n)*2,C(n),950,400+i*5),x.font='5cm A',x.fillText([...'🏳️‍⚧️'][i%1],-60,40)

Dec 4 2021 3:35 AM UTC

}// 140/140

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heisentrans

u/BriSeven

Canvas seems to… inconsistently support this emoji.

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BriSeven

remix of d/2351 by u/nonce

function u(t) {

c.width=600
x.font='9em a'
x.fillText(['🥃','🥛','🍷','🍸','🍹','🍺'][(_=~~(t/2))%6],620-(t*512&1023),250)
c.style.filter=`hue-rotate(${_*10}deg`

Mar 11 2020 5:54 AM UTC

}// 139/140

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#glass

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BriSeven

function u(t) {

w=c.width
for(i=0;i<w;i++)
x.fillStyle=R(S(6*i/w)*255*S(t),-C(6*i/w)*255*C(t/2),-S(6*i/w)*255*S(t/4)),x.fillRect(i,200*(t%5),1,50)

Mar 9 2020 11:46 PM UTC

}// 130/140

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Colored lights

u/joeytwiddle

I think they are still images but my brain tells me they are shrinking outwards! #illusion

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BriSeven

remix of d/24865 by u/BriSeven

function u(t) {

f=t*60|0;
e=1080
x.fillRect(f,0,t/32,e)
x.fillRect(f<500&&e-f,250,t/32,500) 
x.fillRect(e*2-f,t*60|0,t/32,500)

Feb 2 2022 8:47 AM UTC

}// 111/140

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just 3 simple gradients

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BriSeven

remix of d/24454 by u/BriSeven

function u(t) {

c.width*=1
for(i=99;i--;x.setTransform(C(n=t+C(t)*i/9)*2,-S(n),S(n)*2,C(n),960,200+i*6),x.font='5cm a')x.fillText('😨',-C(i/3)*20,70)

Dec 7 2021 2:24 AM UTC

}// 132/140

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Getting put through the wringer

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BriSeven

remix of d/18166 by u/BriSeven

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<256;i++)
x.fillRect(i*10,(i&(S(i/t+t)*t)+t)*10+500,10,15) // draw 50x200 rects

Apr 7 2020 4:05 AM UTC

}// 121/140

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sinewave serving samples of sierpinski

u/camel_case

I could watch this forever *.*
u/BriSeven

can you? i haven’t watched long enough to know for sure but i think the math should run down eventually
u/Xen

love it!

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