Dweets awesomed by u/robbyg

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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pavel

remix of d/24056 by u/KilledByAPixel

function u(t) {

for(i=u=~u*7&511;w=i--/4;)x.fillRect((t||S(i))*2e3-u*T%w,T=640+(i&5?i-u:u-i),t?w:u,t?2:i/u)

Oct 11 2021 5:55 PM UTC

}// 91/140

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u/pavel

for(i=u=~u*697&475;w=i--/4;)x.fillRect((t||S(i))*2e3-u*T%w,T=640+(i&5?i-u:u-i),t?w:u,t?2:i/u) has the parabola shape but is 92 and a little too symmetric.
u/pavel

Err, I meant for(i=u=~u*81&493;w=i--/4;)x.fillRect((t||S(i))*3e3-u*T%w,T=640+(i&5?i-u:u-i),t?w:u,t?2:i/u)

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ArthurThuczsec

remix of d/24008 by u/KilledByAPixel

function u(t) {

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

Oct 7 2021 4:07 PM UTC

}// 96/140

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u/KilledByAPixel

it is a bit smaller with out the sky/water :)

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danny@hille.dk

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

function u(t) {

//bounce












eval(unescape(escape`󮬽󨼮󭽩󩍴󪌽󭼽󜬱󞌻󩭯󬬨󫜽󜽥󝌻󫜭󛜻󚝸󛭦󪝬󫍒󩝣󭌨󪜽󫜥󭼬󪬽󫜯󭽼󜌬󮬪󚬮󜜬󜬩󛍲󟜨󦌽󪜯󭼪󝌭󜬩󚭘󚼨󦜽󪬯󭼪󝌭󜜮󜜩󚭙󛍤󟝲󟬱󟽓󚍴󚬴󙜳󛬲󚜯󞌭󛬲󝌺󠼨󬬩󛼷󛍺󟝓󚍘󛽤󛝴󚬱󞜩󚭃󚍙󛽤󚽴󚬹󚜻`.replace(/u../g,'')))

Oct 6 2021 8:38 PM UTC

}// 140/140

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bouncy bouncy remix

u/magna

Wow! Also, the flex of taking up 22 characters with that preamble :D
u/danny@hille.dk

u/magna thanks :-)
u/danny@hille.dk

glsl version -> https://glslsandbox.com/e#75728.1
u/danny@hille.dk

#d3 #ball

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KilledByAPixel

remix of d/20239 by u/KilledByAPixel

function u(t) {

for(i=c.width|=0;i--;)x.arc(960,540+C(i/40-t*6)*40,i,0,9)
x.stroke()

Oct 4 2021 11:17 PM UTC

}// 68/140

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Moiré Waves

u/sigveseb

Wow, somehow this one looks the same in fullscreen too for me. I was expecting it to have completely different patterns because of the moire effect!
u/theonewhostands

May I ask why you used 'c.width|=0'? to my understanding, it should always return the same value. 1920 | 0 = 1920
u/danny@hille.dk

when you set the with of a canvas, the canvas is reset/cleared, c.width|=0 is 2 char shorter than c.width=1920
u/theonewhostands

Interesting. I understand now. Thank you very much!
u/magna

Whoa!

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rep_movsd

function u(t) {

eval(unescape(escape`𭁼𯀨𡀽𫡥𭰠𢑭𨑧𩑄𨑴𨐨𨰮𭱩𩁴𪀽𥰽𜠵𝐬𢀽𥰩𚐊𩡯𬠨𨐽𡀮𩁡𭁡𛁩🐰𞱩🁗𚡈𞱩𚰫𚐊𩡯𬠨𦐽𛠳𚰨𪐯𥰩𛰲𞐬𦀽𚁩𙑗𚐯𜠹𛁪👩𚠴𛁋👃𚁘𚐭𤰨𦐪𠰨𦀫𦐩𚐪𠰨𭀫𦀯𦐩𚱴𛁯🐱𞱯🀴𞰫𚱯𚑡𦱪𚱯𛐱𧐽𠰨𢰪𫰩𚠨𨑛𪠫𜱝👗𚐊𮀮𬁵𭁉𫑡𩱥𡁡𭁡𚁄𛀰𛀰𚐻`.replace(/u../g,'')))

Oct 4 2021 1:44 PM UTC

}// 140/140

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Plasma

u/primo

Very nice.
u/sigveseb

solid
u/magna

smooth
u/rep_movsd

It uses pretty much the same formula as the previous dweet, but just prettier

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pavel

remix of d/23980 by u/primo

function u(t) {

for(c.width&=i=10368;i--;x.fillRect(i&127,i>>7,f(.6),1))f=n=>6-n*i/3e3-6*n>S(Math.hypot(i/64%2-1,i/5e3-2.2+1/n)*12*n-8*t)?f(n+.02):n/.7-.7

Oct 3 2021 11:54 PM UTC

}// 138/140

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#raytracing z = sin(sqrt(x*x + y*y) - t)

u/pavel

Also a pretty generic ray tracing 'engine.' Change f to trace other things.
u/pavel

Style remix, no idea how the code I'm remixing works yet. It does not look to do ray tracing so its clearly better.
u/primo

The original uses z + ∂/∂y z for saturation, which looks about right tilted at or near ~26.5°.
u/pavel

for(c.width&=i=10368;i--;x.fillRect(i&127,i>>7,f(.7),1))f=n=>(z=5-i/3e3-3*n)>S(Math.hypot(i/64%2-1,i/5e3-n)*9-6*t)?f(n+.03):--z*.4 is a better one, no weird view prism.

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primo

function u(t) {

eval(unescape(escape`𡀽𫡥𭰠𢑭𨑧𩑄𨑴𨐨𨰮𭱩𩁴𪀽𭰽𝐶𞀬𪠽𪀽𝰴𝀩𒡦𫱲𚁡👄𛡤𨑴𨐻𪀫𪠭𛐻𚑦𫱲𚁩👷𛰲𞱩𞱡𦱯🐭𛑩𛑷𛰲𛑾𚀱𝠵𛑪𛰴𛐳𜠪𤰨𭐽𮠯𜐶𛑴𚠸𚐩𚡷🀼𜡼𜱝👡𦱯𛐸𚡩𧐽𜐲𞀭𝐷𚡓𚁵𚐭𪠪𜰸𛱺𚡃𚁵𚐩𮠽𚁩𚡩𛰴𚱪𚡪𛰹𚐪𚠮𝐊𮀮𬁵𭁉𫑡𩱥𡁡𭁡𚁄𛀰𛀰𚐠`.replace(/uD./g,'')))

Oct 3 2021 7:46 PM UTC

}// 140/140

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#sine

Show more comments…
u/pavel

Damn thats smooth
u/primo

I spent a while trying to balance performance and quality, ultimately deciding to err on the side of quality, because I thought it would age better that way ;)
u/rep_movsd

Nice
u/primo

Performance boost: eval(unescape(escape𮀮𬁵𭁉𫑡𩱥𡁡𭁡𚁄👴🱄𞡮𩑷𘁉𫑡𩱥𡁡𭁡𚁣𛡷𪑤𭁨👷🐵𝠸𛁷𚐬𜀬𜀩𒡡👄𛡤𨑴𨐊𩡯𬠨𪠽𪀽𝰴𜀻𪀫𪠭𛐻𚑦𫱲𚁩👷𛰲𞱩𞱡𦱯🐭𛑩𚠴𚰨𜰳𜰭𪠯𜠭𝠴𚡓𚁵👺𛰳𜠭𭀪𞀩𯀱𚐪𭰪𜠫𜱝👡𦱯𛐸𚡩𧐽𜐲𞀭𝐷𚡓𚁵𚐭𪠪𞀱𛱺𚡃𚁵𚐩𮠽𚁩𚡩𚱪𚡪𛰲𚐪𚠮𝐠.replace(/uD./g,'')))
u/primo

Uncompressed: x.putImageData(D=t?D:new ImageData(c.width=w=568,w),0,0) a=D.data for(j=h=740;h+j--;)for(i=w/2;i;a[o=--i*4+(333-j/2-64*S(u=z/32-t*8)|1)*w*2+3]=a[o-8*i]=128-57*S(u)-j*81/z*C(u))z=(i*i+j*j/2)**.5
u/primo

Place newlines were appropriate >_<;;

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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

Show more comments…
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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rodrigo.siqueira

remix of d/23925 by u/rodrigo.siqueira

function u(t) {

for(i=k=680;--i;x.fillRect(k-i*Y,k-v*i,30*q*X*v,Y*i*v))f=i*t,X=f*f%3-1,Y=X*f%4-2,x.fillStyle=R(q=i*X*X,q*=X*X,q*=t*Y*q/i/X,i/q/q),v=.5**t/t

Sep 28 2021 2:28 AM UTC

}// 139/140

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Autumn sunset #landscape

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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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