Dweets awesomed by u/DataMeta

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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magna

remix of d/24019 by u/magna

function u(t) {

w=c.width|=0
h=1080
A=S(t/5)+2
Z=S(t/7)+3
x.setTransform(k=C(A)*Z,z=S(A)*Z,-z,k,w/2,h/2)
for(i=w;--i;)x.fillRect(i-w/2,-h/2,1,S(i+Z-A)**2*h)

Oct 7 2021 4:57 AM UTC

}// 140/140

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KilledByAPixel

remix of d/24009 by u/BackendForth

function u(t) {

for(c.width|=i=0;i<3e3;i+=.1)x.arc(960,540,i**.5*21,a=i+t,a)
x.stroke()

Oct 6 2021 8:54 PM UTC

}// 71/140

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Spiral Makes Circle Moiré

u/magna

Awesome! Also, ouch my eyes.
u/Chippackage

WOW!

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KilledByAPixel

remix of d/23975 by u/tomxor

function u(t) {

for(X=t&&X+r*25,i=h=5+X%4*C(t*5)<<6;--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)

Oct 6 2021 6:12 PM UTC

}// 119/140

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Tiny Tree Lake 🌲 Golfed by pavel, gibson042, yonatan, tomxor, and me

Show more comments…
u/magna

If you keep golfing this down, I'm going to come and slap a default on top of it!
u/rep_movsd

C(t) also produces a passable landscape
u/tomxor

#teamwork !
u/danny@hille.dk

114 -> for(X=t&&X+r*25,i=h=5+X%2*t<<6;--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/KilledByAPixel

that is good but we lose the curve which is the only thing holding together the composition
u/rep_movsd

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

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

great attempt! not sure it is possible to get smaller without cutting something. in this case the X%4 part is necessary to make the trees varying heights
u/FireFly

"boring" -1, distribute the ?: across args in the fillRect: x.fillRect(t?X-r*i/8:i*8,t?600+(r*8&3?i-h:h-i):r*600,t?i/4:h,t?2:r). Or more depending on what artistic tradeoffs you're okay with, e.g. just always setting height to r isn't terrible

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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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KilledByAPixel

function u(t) {

eval(unescape(escape`󦌽󭌿󦌫󬬪󝬹󞬰󒭨󟝴󟼹󞜫󜼰󜌪󬬫󞜹󚭃󚍴󚬷󚜺󝽥󜼊󩭯󬬨󪜽󜌻󪜼󪌻󮌮󩭩󫍬󤭥󨽴󚍱󛌷󜌰󚽨󛜫󚽩󛍷󛍲󚜩󬬽󣝡󭍨󛭲󨝮󩍯󫜨󭼽󪜯󝌩󛍸󛭦󪝬󫍓󭍹󫍥󟝒󚍶󟝴󟼰󞬸󜌫󪜬󭬬󭬯󛬸󚜬󮌮󩭩󫍬󤭥󨽴󚍱󟜡󭌦󪜿󬬪󜭥󜼺󦌭󭼫󭼪󬬬󭌿󝼰󜌭󪌫󪜺󭼬󭌿󭼺󮬽󪜿󜬺󜭥󜼬󮬩`.replace(/u../g,'')))

Sep 30 2021 3:52 AM UTC

}// 140/140

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Treescape 🌲

Show more comments…
u/Joachim

wow!
u/UEZ

nice!
u/rep_movsd

This is one of the best ever
u/rep_movsd

This deserves a writeup
u/KilledByAPixel

Thank you, I will try to do that
u/UEZ

A little bit darker: X=t?X+r*69:(x.fillRect(0,0,2e3,1e3),0) hh=t?99+300*r+99*C(t*7):7e3 for(i=0;i<hh;)ww=i/4,r=Math.random(ww),v=t?0:80+i,x.fillStyle=R(v>>2,v>>2,v/.8>>2,.7),q=(!t&i)?r*2e3:X-ww+ww*r,x.fillRect(q,t?700-hh+i:ww,t?ww:z=i?2:2e3,z),x.fillStyle=R(v,v,v/.8),x.fillRect(q,700+hh-++i,ww,r)
u/UEZ

Btw, thank you very much for the very usefull 𝓒𝓪𝓹𝓙𝓢 editor :-)
u/DaSpider

Next level
u/magna

WHOA
u/aleamb

wow!! #landscape #nature #tree
u/vain

Really impressive! What a beautiful forest landscape with a starry sky <3

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firegodjr

remix of d/23960 by u/firegodjr

function u(t) {

x.globalCompositeOperation="difference"
x.fillStyle="#fff"
x.fillRect(0,0,2,2)
x.drawImage(c,2,0)
x.drawImage(c,1,2)

Sep 29 2021 7:22 PM UTC

}// 116/140

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Recurrence (more triangular)

u/magna

Awesome!
u/magna

This could be combined with a gradual zoom to create a perfect loop
u/rodrigo.siqueira

Mesmerizing
u/astucky21

Something ominous about this, but love it.
u/aleamb

#sierpinski

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rep_movsd

function u(t) {

for(c.width=-1,Y=0;Y<6;Y+=.05)for(X=0;X<6;X+=.05)A=X+t,B=Y+.3,x.fillStyle=R(0,0,0,(S(B)-S(B*C(A+B))*C(A/B))%.4),x.fillRect(X*60,Y*60,6,6)

Sep 29 2021 10:47 AM UTC

}// 138/140

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Contours

u/donbright

doesn't repeat?
u/rep_movsd

As far as I can tell, no.
u/rep_movsd

It may have a very long period I think
u/Joachim

#noise

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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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remix of d/5347 by u/rg

function u(t) {

c.width|=0;d=new Date(1986,10,9),n=new Date(),f=31536e10,P=Math.PI/2;x.arc(960,540,5e2,-P,4*P*(n-d)/f-P,1);x.lineTo(960,540);x.fill()//10k

Sep 25 2021 9:13 PM UTC

}// 138/140

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10,000 year clock, starting on my birthday... #time

u/e4494s

im literally so hyped guys i cant wait

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