Dweets awesomed by u/donbright

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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wwickedwicked

function u(t) {

c.width=1920;A=S(t)*256;for(X=-1;X<1;X+=0.1)for(Y=-1;Y<1;Y+=0.1){Z=X*X-Y*Y;x.fillRect(960+256*X+(Y*A),540+Z*A,8,8)}

Sep 27 2021 4:44 PM UTC

}// 115/140

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u/rodrigo.siqueira

The Hyperbolic Paraboloid (z=x²-y²) is the Pringles Equation. I made a salty, rotating one d/14780

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remix of d/23918 by u/rodrigo.siqueira

function u(t) {

for(i=5e4,w=960;i--;x.fillRect(w+w*X/Z/t,w*Y/Z/3/t-Z*710-3000,4/Z/Z,t<4))r=Math.random,X=r()*16-8,Y=r()*20-10,Z=C((X*X+Y*Y)/(Y*X+2)*X-5)/4-5

Sep 26 2021 12:09 AM UTC

}// 140/140

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u/jellyedwards

Very cool!
u/magna

Wow!
u/rep_movsd

Weirldy organic

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danny@hille.dk

remix of d/23879 by u/danny@hille.dk

function u(t) {

eval(unescape(escape`󮬽󨼮󭽩󩍴󪌽󭼽󜜸󜌬󮌮󩭩󫍬󤽴󮝬󩜽󙽮󨝶󮜧󞽦󫽲󚍭󟜲󩜴󞽭󛜭󞽲󟜨󨜽󦌯󞜰󛜱󚜪󨜫󚍢󟝙󛼹󜌭󜜮󝌩󚭢󛍤󟜭󛬱󛍺󟝓󚍡󛽤󚭲󚽴󚬴󚜭󠼨󨬯󩌫󭌪󝼩󚝸󛭦󪝬󫍒󩝣󭌨󦌽󫜥󭼬󦜽󫜯󭼬󠼨󦌯󞜭󤼨󦜯󜼹󛝴󚬳󚝞󦜯󞜭󠼨󦌯󜼳󚽴󚬴󚜫󭌪󜼩󛽺󚼱󛍺󚬮󝌩󒬻`.replace(/u../g,'')))

Sep 25 2021 2:16 PM UTC

}// 135/140

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composite water ripple + refraction effect remix

u/danny@hille.dk

z=c.width=w=180,x.fillStyle='navy';for(m=2e4;m--;r=(a=X/90-1)*a+(b=Y/90-1.4)*b,d=-.1,z=S(a/d*r+t*4)-C(b/d+t*7))x.fillRect(X=m%w,Y=m/w,C(X/9-S(Y/39-t*3)^Y/9-C(X/33+t*4)+t*3)/z+1,z*.4)
u/Odog8

Looks like a snes demoscene-to-be!
u/danny@hille.dk

#water

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danny@hille.dk

remix of d/23879 by u/danny@hille.dk

function u(t) {

z=c.width=w=180;for(m=2e4;m--;)x.fillRect(X=m%w|0,Y=m/w|0,z=S(X/9*(k=1.1+S(t)/3)|Y/9*k-t*29),1/z*C(((a=(X-90)/66)*a)+((b=(Y-60)/66)*b)-t*6))

Sep 23 2021 11:41 PM UTC

}// 140/140

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Alien invasion remix

u/taupelink

whoaoooOOoooahhhhh
u/magna

Amazing!
u/neimad

so cool
u/aleamb

wow!
u/donbright

!!

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donbright

remix of d/23884 by u/donbright

function u(t) {

質=(n)=>{for(j=2;j<n;j++){if (n%j==0)return n}return 0}
格=7
for(X=299;X--;)
for(Y=299;Y--;)
if (質(X%Y)) x.fillRect(格*X,格*Y,格,格)

Sep 19 2021 6:11 PM UTC

}// 126/140

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Prime fun 3 / 3 - when X is less than Y, then X modulo Y gives X, so we see the normal vertical prime stripes, white shows X is a prime. not sure about the rest, there seems to be a large white line around the line where X equals Y, #math #primes

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donbright

remix of d/23883 by u/donbright

function u(t) {

質=(n)=>{for(j=2;j<n;j++){if (n%j==0)return n}return 0}
格=7
for(X=299;X--;)
for(Y=299;Y--;)
if (質(X^Y)) x.fillRect(格*X,格*Y,格,格)

Sep 19 2021 5:48 PM UTC

}// 126/140

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Prime fun 2 / 3 - Normally X binary XOR with Y produces a single white line, but if we only draw black when X XOR Y is a prime number, then we get a pattern. #math #primes

u/donbright

(note i have flipped black/white in my caption, actually its drawing black when the number is not prime)
u/rep_movsd

Fascinating
u/Joachim

#circuit

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donbright

function u(t) {

質=(n)=>{for(j=2;j<n;j++){if (n%j==0)return n}return 0}
格=7
for(X=299;X--;)
for(Y=299;Y--;)
if (質(X&Y)) x.fillRect(格*X,格*Y,格,格)

Sep 19 2021 5:40 PM UTC

}// 128/140

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Prime fun 1 / 3 - This is the standard X&Y (binary AND) Sierpinski triangle picture but only where X & Y is a prime number. perhaps revealing a relationship between primes and binary AND #math #primes

u/donbright

(note white = X&Y is prime, black = X&Y is composite)
u/andrea270872

this is really nice. retro and mathsy at the same time!
u/donbright

#Sierpinski

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ketolli

function u(t) {

c.width=a=1920;for(i=0;i<150;i++)x.fillRect(S(t+(i/4))*50+a/2,8*i,C(t+(i/20))*40,S(t+(i/3))*50)

Sep 19 2021 5:33 PM UTC

}// 95/140

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Tapeworm

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hvianna

remix of d/23869 by u/hvianna

function u(t) {

s=t?r&m?-s:s:r=3/(m=512);c.width|=0;for(i=o=t;o<t+50;r+=s)x.stroke(new Path2D('M'+[m+r*S(i+=.17),m+r*C(i)]+'L'+[m+m*S(o+=.1047),m+m*C(o)]))

Sep 18 2021 2:48 PM UTC

}// 139/140

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shaved some extra bytes off and managed to get the ratio I was originally aiming for

u/donbright

really fun to play around with that o+=.1047 term.
u/donbright

and the i+= term as well. really cool

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danny@hille.dk

function u(t) {

z=c.width=w=180;for(m=2e4;m--;)x.fillRect(i=m%w,j=m/w,1/z,z),d=(r=(X=i/90*(g=2+C(t))-g)*X+(Y=j/90*g-g/1.7)*Y)>1?0:C(r)/9,z=C(X/d-t*9)*Y/d

Sep 18 2021 1:09 PM UTC

}// 137/140

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Alien spaceship

Show more comments…
u/donbright

wow
u/danny@hille.dk

soo many shapes hidden in this dweet!!! ED:z=c.width=w=180;for(m=2e4;m--;)x.fillRect(i=m%w,j=m/w,z,1/z),d=(r=(X=i/w*(g=2)-g/2)*X-(Y=j/w*g-g/1.7)*Y)>1?0:C(r)/9,z=C(X/d)/S(Y/d-9-t*19)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;)x.fillRect(i=m%w,j=m/w,z,1/z),d=(r=(X=i/w*(g=2)-g/2)*X-(Y=j/w*g-g/1.7)*Y)>1?0:C(r)/9,z=C(X/d)*S(Y/d-9-t*19)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;)x.fillRect(i=m%w,j=m/w,z,1/z),d=(r=(X=i/w*(g=2)-g/2)*X/(Y=j/w*g-g/1.7)*Y)>1?0:C(r)/9,z=C(X/d)+S(Y/d-9-t*19)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;)x.fillRect(i=m%w,j=m/w,z,1),d=(r=(X=i/w*(g=2)-g/2)*-X+(Y=j/w*g-g/g)*Y)>1?0:C(r)/9,z=S(X/d*r)-C(Y/d-t*9)
u/donbright

a lot of those are worthy of a remix !
u/donbright

(new dweets i mean)
u/danny@hille.dk

Thanks mate, might do that later :-)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;)x.fillRect(i=m%w,j=m/w,z,2/z),d=(r=(X=i/w*3-1.5)*X/(Y=j/w*3-1)*Y)>1?0:C(r)/9,z=T(X/d-t*9)*T(Y/d+t*9)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;d=(r=(X=i/w*4-2)*X+(Y=j/w*4-1.2)*Y)>1?-.2:C(r)/9,z=T(X/d-t*9)*T(Y/d+t*9))x.fillRect(i=m%w,j=m/w,z,2/z)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;d=(r=(X=i/w*4-2)*X+(Y=j/w*4-1.2)*Y)>1?-C(.05-t):C(r)/9,z=T(X/d-t*9)*C(Y/d+t*9))x.fillRect(i=m%w,j=m/w,1/z,z)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;d=(r=(X=i/w*4-2)*X+(Y=j/w*4-1.2)*Y)>1?0:C(r)/9,z=T(X/d-t*9+C(Y/d+t*9)))x.fillRect(i=m%w,j=m/w,z,2/z)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;d=(r=(X=i/w*4-2)*X-(Y=j/w*4-1.2)*Y)>1?-.04:C(r)/9,z=T(X/d-t*9+C(Y/d+t*9)))x.fillRect(i=m%w,j=m/w,z,2/z)
u/danny@hille.dk

z=c.width=w=180;for(m=2e4;m--;)x.fillRect(i=m%w,j=m/w|0,1/z,z),d=(r=(X=i/w-.5)*X+(Y=j/w-.35)*Y)>.4?0:C(r)/9,z=C(X/d-t*9)*S(Y/d+S(t)*9)
u/ciaccodavide

wow!

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