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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sawaxon

remix of d/1620 by u/sawaxon

function u(t) {

c.width=1920;for(j=1;j<9;j++)for(i=1;i<390;i++)x.fillRect(900+C(i)*400,500+S(i)*6*S((t+20)*5*j/50)*70,2,4);

Feb 28 2017 8:26 PM UTC

}// 107/140

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hoplite

function u(t) {

f=a=>Math.hypot(i-128+S(a/3)*128,j-72+C(a)*72)
for(w=i=c.width=256;i--;)for(j=w;j--;(f(t)^f(C(t)))&8||x.fillRect(i,j,1,1))x.fillStyle="#adf"

Dec 12 2022 8:58 AM UTC

}// 140/140

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nonce

function u(t) {

c.style.filter='invert('
f=frame/90,m=960,n=540,E=500,V=362
x.moveTo(m-V*S(v=f*13),n+V*C(v))
x.lineTo(m-E*S(e=f*8),n+E*C(e))
f<6&&x.stroke()

Mar 30 2017 6:34 AM UTC

}// 140/140

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This is inspired by this reddit post: https://www.reddit.com/r/woahdude/comments/6…

u/nonce

Direct link to gif: https://i.imgur.com/ysaLqAf.gif
u/sfz

cool idea :} https://www.dwitter.net/d/1811
u/sfz

neat invert trick!
u/donbright

very cool but invert doesnt seem to work on ffox
u/nonce

Oh wow, did not see https://www.dwitter.net/d/1811 very cool trick drawing 1/2 a line per frame!

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tomxor

remix of d/23968 by u/KilledByAPixel

function u(t) {

for(X=t?X+r*50:0,i=h=11+6*C(t*4+X%1)<<5;--i;x.fillRect(...t?[X-r*i/4,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*999,h,r]))r=Math.random()

Oct 2 2021 12:56 PM UTC

}// 128/140

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Smolr Tree Lake

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u/tomxor

A nice round 2**7 chars. A bit of bitwise, ternary trimming and coefficient concessions
u/KilledByAPixel

nice! I'm surprised you didn't get rid of the Math.random()!
u/yonatan

nice golf, r=(t+i)**3.9%1 works too
u/tomxor

Yeah I was surprised to, I think this one is a bit more sensitive to bad distributions. Yonatan's is pretty good though.
u/pavel

X=t?X+r*50:0 -> X=t&&X+r*50
u/pavel

r=++t**3.9%1 saves 3 chars
u/pavel

Ah, no, it kills the sky/water.
u/KilledByAPixel

i feel it is possible to somehow golf the random part by at least a byte but I still haven't found a way without major issues
u/pavel

for(X=t&&X+r*25,i=h=11+6*C(t*4+X%1)<<5;--i;x.fillRect(...t?[X-r*i/8,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*600,h,r]))r=1+S(i^X)
u/pavel

122
u/KilledByAPixel

I knew you could do it pavel!
u/aleamb

beautiful!!

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micksam7

function u(t) {

f=2e3;x.fillStyle=R(f,f,f,.2);x.fillRect(0,0,f,f);for(i=0;i<f;i++)a=C(i+t/8),x.fillStyle=R(a*f,i/9,i/7,.3),x.fillRect(a*900+960,i-30,20,20)

Feb 26 2017 5:35 AM UTC

}// 139/140

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Xen

remix of d/3031 by u/yokljo

function u(t) {

X=999,x.globalAlpha=.02;x.save();x.rotate(S(t));x.fillRect(S(t)+X,X/T(t),S(t)*X,C(t)*X);x.restore();x.drawImage(c,S(t)*X,C(t))

Aug 8 2017 12:34 AM UTC

}// 126/140

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51 Shades of Grey

u/cantelope

wish it would keep going... but all things must eventually come to an end i guess...
u/Xen

it passed out....

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Ath0r

function u(t) {

c.width=1920
p=[a=960,a/3]
w=i=>[a+300*C(z=t+2.09*i),800+100*S(z)]
f=i=>x.lineTo(...i)
for(i=6;i--;){b=f(w(i));f(p);f(w(i))}
x.stroke()

Feb 26 2019 9:07 PM UTC

}// 135/140

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My first dweet (simple pyramid)

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u/katkip

Nicee
u/Ath0r

Thanks! It's the first time I've tried, so probably I missed a lot of tricks to reduce characters... Any feedback or tips are welcome! :D
u/13thptr

b is unused so you can remove it :)
u/13thptr

nice dweet btw
u/13thptr

127:c.width=1920 w=i=>[960+300*C(z=t+2.09*i),800+100*S(z)] f=i=>x.lineTo(...i) for(i=6;i--;)f(w(i)),f([960,320]),f(w(i)) x.stroke()
u/13thptr

ugh sorry here it is with semicolons instead of newlines
u/13thptr

c.width=1920;w=i=>[960+300*C(z=t+2.09*i),800+100*S(z)];f=i=>x.lineTo(...i);for(i=6;i--;)f(w(i)),f([960,320]),f(w(i));x.stroke()
u/Ath0r

Thanks a lot for the suggestions, @13thptr! Indeed, I forgot to remove the unused b and the characters you remove by avoiding the definition of p is also very nice :)
u/tomxor

It's a spinning simplex!! :D great 1st dweet
u/Ath0r

Thanks @tomxor :D
u/f8f82804

#d3 #wireframe

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KilledByAPixel

remix of d/22668 by u/KilledByAPixel

function u(t) {

for(i=Z=64;i--;x.clearRect(X+=A*=F(X+=A),Y+=B*=F(Y+=B),3,3))F=_=>u[G=(U=X>>6)+(V=Y>>6)*Z]?1:u[x.fillRect(U*Z,V*Z,Z,Z),G]=-1}{X=Y=540,A=3,B=2

Feb 11 2023 11:52 PM UTC

}// 140/140

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Break Out Of The Dweet

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rodrigo.siqueira

remix of d/20214 by u/rodrigo.siqueira

function u(t) {

c.width+=X=Y=Z=f=0.05
for(i=6e3;i--;x.fillRect(980+780*(X*C(t)-Y*S(t)/3),540-Z*999+Y*99,5,5))X+=(Z-Y)/8*T(t/9),Y+=X+Z*Y/5,Z+=(f-X*X+f*Z*X)/9

Oct 8 2020 2:20 PM UTC

}// 140/140

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Aizawa Attractor (non-stable self-destructive torus convergence version)

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logomach

function u(t) {

  c.width=2e3;for(i=192;i--;)for(j=108;j--;)x.fillRect(i*10+S(t/(i+j)*500)*100,j*10+S(t+i),8,8)

Jan 1 2018 2:34 AM UTC

}// 96/140

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