Dweets awesomed by u/Irratix

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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Irratix

function u(t) {

//EPILEPSY WARNING
for(i=c.width|=0;i-=.5;)x.fillRect(960+500*T(33*i+t/5),540+500*S(24*i+t/7),430,5)

Oct 11 2019 9:50 PM UTC

}// 100/140

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I decided to put the epilepsy warning in a comment for some reason. Just wanted to mess around with a parametric function, drawing as long lines I thought looked kinda trippy.

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rodrigo.siqueira

function u(t) {

for(c.width=a=200;a--;)
x.arc(99,70,(2+S(a*2+t)+a*t%500),1.61,7.8)
x.stroke()

Oct 11 2019 1:02 PM UTC

}// 77/140

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The Antenna. This dweet is meant to be watched while listening "Antenna" (by Kraftwerk).

u/DataMeta

Classic electronic! Reminds me of d/12599 :]
u/KilledByAPixel

📡
u/rodrigo.siqueira

#kraftwerk #antenna

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joe.m

remix of d/16019 by u/joe.m

function u(t) {

if(!t){r=1,d=100}
for(z=d;z--;){
r++
n=0
for(i=r**.5|0;i>1&&n==0;i--)if((r/i)==(r/i|0))n=1
if(!n) x.fillRect(960+r/d*C(r),540+r/d*S(r),4,4)}

Oct 11 2019 9:48 AM UTC

}// 140/140

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now with a (slightly) less rubbish #prime test

u/pavel

91 for(d=z=99;z--;i||x.fillRect(960+r/d*C(r),540+r/d*S(r),4,4))for(r=t&&r+1,i=r**.5|0;r%i--;);
u/katkip

u used 3blue1brown video

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BalintCsala

function u(t) {

for(c.width=X=200;X--;x.fillRect(X,54+S(X/9)*9,1,1))k=C(t)
z=S(t)/9
x.arc(t*9+(k+k**3)/z,54+z*81-(j=1+k*k)/z,(j**3/z/z)**.5,0,7)
x.stroke()

Oct 10 2019 12:43 AM UTC

}// 139/140

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Based on https://twitter.com/Fujino_Yuusui/status/117…, draws the circle, that approximates the path at every point

u/katkip

Wtf awesome

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yonatan

function u(t) {

for(i=2e3;t<9&&i--;x.fillRect(i,(T+3)*t*45,1,2e3,x.fillStyle=R(a=255-t*t*3,a,a)))for(T=0,j=9;j--;T=T/2+C((i-960*S(t*k))*k/t/99))k=2**j

Oct 9 2019 10:22 PM UTC

}// 134/140

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Slow mountains #waitforit #landscape

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u/yonatan

fancy color version: https://codegolf.tk/a/389
u/katkip

awesome
u/taupelink

Excellent
u/aleamb

fucking awesome!
u/metamero

beautiful!!
u/magna

:)

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yonatan

remix of d/15974 by u/katkip

function u(t) {

f=frame
e=(f&2)-1
x.fillRect(960-e*f,f,e*f*(f**.5&1?.9:2),3)

Oct 8 2019 6:16 PM UTC

}// 60/140

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60 byte road

u/yonatan

50 bytes but *extremely* slow: e=t&2;x.fillRect(960-t*--e,t,e*t*(t**.5&1?.9:2),3)
u/joeytwiddle

Perspective on the road marking: f,e*f*(3e2/f**.5&1?.9:2),3

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katkip

remix of d/9963 by u/BalintCsala

function u(t) {

x.fillRect(960-t*50,t*100,t*100,4);if(t%2<1)x.clearRect(960-t*5,t*100,t*10,4)

Oct 8 2019 5:16 PM UTC

}// 77/140

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Same road but straight. - 63 characters golf

u/katkip

or even 76 bytes: x.fillRect(960-t*50,t*100,t*100,4),t%2<1?x.clearRect(960-t*5,t*100,t*10,4):0
u/yonatan

x.fillRect(960-t*50,q=t*99|0,q,4);x.clearRect(960-t*5,q,t*9,q**.5&1&&4) - there might be a better way without using clearRect

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KilledByAPixel

remix of d/15963 by u/KilledByAPixel

function u(t) {

for(k=960,i=c.width|=0;z=--i/9;x.lineWidth=9)x.arc(k-z*C(j=i/k+t/4)*6,540-z*S(j)*4,(C(i/99+t)+1)*3e3/z,m=k*((i**.7)/k*9+t/9)/9,m)
x.stroke()

Oct 8 2019 5:16 PM UTC

}// 140/140

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Bubble Spring

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Irratix

function u(t) {

(D=(n,m,o,p,q)=>{f=99*q;x.fillStyle=R(f,f,f,1);x.fillRect(n,m,o,p);q&&D(n,m,o/=2,p/=2,--q)+D(n+o,m,o,p,q)+D(n,m+p,o,p,q)})(0,0,1920,1080,8)

Oct 8 2019 10:40 AM UTC

}// 139/140

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Recursive method for generating a fractal triangle.

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keithclark

function u(t) {

for(k=i=1e3;z=--i/9;x.fillRect(k+S(m=k*j^k)*r-z*C(j)*6,540+C(m)*r-z*S(j)*4,s=5e3/z,s))j=i/k+t/4,r=1e4/z,x.fillStyle=R(a=99+S(j*7)*99,a,a)

Oct 8 2019 12:04 AM UTC

}// 137/140

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Show more comments…
u/yonatan

good remix of d/10212 :)
u/keithclark

Yes! It's totally based on your dweet yonatan - thanks for the link to the original. I found this in a text file from last year but couldn't remember who did the original.
u/keithclark

I also had this version: for(k=i=1e3;z=--i/9;x.fillRect(k+S(m=z%1&&k*j|5)*r-z*C(j)*6,540+C(m)*r-z*S(j)*4,s=5e3/z,s))j=i/k+t,r=1e4/z,x.fillStyle=R(a=99+S(j*9)*99,a,a) but wasn't happy with the rail
u/tomxor

Smooth!
u/tomxor

I quite like the rail ver, bit fast though
u/katkip

#tunnel
u/logomach

doctor who theme intensifies
u/larzuk

ultra nice!
u/Cloud

WOW!
u/vain

Just unbelievable. <3

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