Dweets awesomed by u/yonatan

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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tomxor

remix of d/24141 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𩠽𧰽🡓𛰶𞀭𜐮𞀸𯁃𛰱𝠭𝀮𜑼𤰫𝀦𞀬𭰽𨰮𭱩𩁴𪀦👩🐳𜰰𜠴𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𤰽𪐦𜠵𝐬𠰽𪐾🠸𛀱𛁱🐲𚡰𯀰𚐬𤠽𚁰𛑱𚐯𜐶𛁵𦱔𧐫🐳𚡒𛁵𦱔👩𛑷𧐫🐵𚡒𛁵𦱔𛐱𧐽𤠩𬀽𚁵𦱩𧐫🐷𚡒𚐫𚁦𚀩🱦𚁓𛐽𝀬𠰭🐴𚐿𚁓𚡓𚱃𚡃𚐯𞑥𝀫𛠱𞠱𞠰𚑼𯀰`.replace(/u../g,'')))

Oct 16 2021 12:50 AM UTC

}// 140/140

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#default Floyd–Steinberg #dithering

u/ciaccodavide

oooooh, I love dithering! Nice one!
u/tomxor

me too :) I didn't realise how simple the algorithm was before no, and it can be done in a single pass because it's only half a 2d kernel. Tweaking the coefficients (*R) can be fun, e.g 7*R=>5*R, 3*R=>5*R better preserves the dark and light areas in this image.
u/magna

Wow
u/sigveseb

Very nice!

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ciaccodavide

function u(t) {

for(m=Math,i=2e5*(t<1);i--;)r=m.random,X=r(),Y=r(),d=m.hypot(j=.4-X,k=.2-Y),m.hypot(.48-X,.3-Y)<.2&&x.fillRect(2e3*X,2e3*Y,-d*d*26,1)

Oct 15 2021 10:00 AM UTC

}// 133/140

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GANTZ

u/rep_movsd

Brilliant
u/magna

u/rep_movsd lol

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ciaccodavide

remix of d/24117 by u/ciaccodavide

function u(t) {

c.width|=1
for(Y=68;Y--;)
for(X=120;X--;)
d=Math.hypot(X-58,Y-34),
x.fillRect(
 X*16+C(d*d/t)*9,
 Y*16+C(d*d/t)*9,
 9+2*C(t*.8),
 9+2*S(t)
)

Oct 14 2021 9:51 PM UTC

}// 140/140

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#waitforit

u/magna

Wow
u/cantelope

awesome
u/cantelope

relevant d/21033 ...also d/18773

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magna

remix of d/24079 by u/yonatan

function u(t) {

eval(unescape(escape`󭜽󪌽󝜱󜜻󩭯󬬨󨼮󭽩󩍴󪍼󟝫󟜰󞽫󟌲󞽫󚼽󛬰󜬩󩭯󬬨󪜽󭜽󭜪󝜦󪌻󭼽󪜭󛜯󝌻󚝸󛭦󪝬󫍒󩝣󭌨󚌨󪽼󯍓󚍩󚜩󚽴󛽨󚬨󪼿󭜯󞜺󞜩󚜥󜜪󪌪󝜭󪌭󭜪󥌥󭼬󥌽󪌫󚍩󙬵󟽩󛝵󞭵󛝩󚜬󪼿󭼺󭜬󜬫󤼨󥌾󪌦󙭷󚽴󚬹󚜩`.replace(/u../g,'')))

Oct 12 2021 5:01 PM UTC

}// 118/140

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Boat trip

Show more comments…
u/magna

Assignment: Add a V-shaped flock of migrating birds
u/magna

Uncompressed: u=h=511;for(c.width|=k=0;k<2;k+=.02)for(i=u=u*5&h;w=i--/4;)x.fillRect(((k||S(i))+t/h*(k?u/9:9))%1*h*5-h-u*T%w,T=h+(i&5?i-u:u-i),k?w:u,2+S(T>h&&w+t*9))
u/danny@hille.dk

sweet parallax effect!
u/yonatan

beautiful, much nicer with the parallax
u/magna

Thanks!
u/tomxor

First thing I thought of when I saw Yonatans! Such a great team effort, the original idea, lots of golfing and these two finishing touches.
u/rep_movsd

Fantastic
u/rep_movsd

Now add color 😂

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yonatan

remix of d/24073 by u/pavel

function u(t) {

u=h=511;for(c.width|=k=0;k<2;k+=.02)for(i=u=u*5&h;w=i--/4;)x.fillRect(((k||S(i))+t/4)%1*h*5-h-u*T%w,T=h+(i&5?i-u:u-i),k?w:u,2+S(T>h&&w+t*9))

Oct 11 2021 8:36 PM UTC

}// 140/140

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u/KilledByAPixel

nice!
u/yonatan

Thanks. A little too fast, should have been t/8 instead of t/4...
u/aemkei

Thought the same. t/8 is really a calm beauty!
u/yonatan

Yeah, my screen does 30Hz so I only notice it when exporting to a gif.
u/Joachim

I like the animated #water
u/magna

t/h/9*u for parallax
u/magna

Here we go: d/24088

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ciaccodavide

remix of d/23983 by u/pavel

function u(t) {

for(c.width&=i=10368;i--;x.fillRect(i&127,i>>7,f(.7),1))f=n=>(z=5-i/3e3-3*n)>T(Math.hypot(i/64%2-1,i/5e3-n)*9-6*t)?f(n+.6+.3*S(t)):--z*.4

Oct 11 2021 8:13 PM UTC

}// 137/140

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ripple #raytracing #remix

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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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Joachim

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪌽󜼰󜌊󩭯󬬨󪜽󞜻󪜭󛜻󚝷󪝴󪌨󮌩󫝯󭭥󥍯󚍡󟜹󞜫󪜪󜜵󛍢󟜹󞜫󠼨󭌫󪜩󚬹󚜬󫍩󫭥󥍯󚍡󛜱󝜬󞜹󚽃󚍴󚽩󛜱󚜪󞜩󛍭󫽶󩝔󫼨󨜬󨬩󛍬󪝮󩝔󫼨󨜫󤼨󭌫󪜩󚬹󛍢󚼲󜌩󛍳󭍲󫽫󩝒󩝣󭌨󞜹󚽔󚍴󛼹󚽩󚜪󞜹󛌱󜬵󛍩󛌳󚜬󩭩󫍬󤭥󨽴󚌰󛌱󜬸󛌹󞜹󛌱󚜊󮌮󬽴󬭯󪽥󚌩`.replace(/u../g,'')))

Oct 8 2021 2:26 PM UTC

}// 140/140

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stick millipede

u/Joachim

#creepy
u/magna

WOW!

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KilledByAPixel

remix of d/24008 by u/KilledByAPixel

function u(t) {

for(c.width|=j=9;j--;)for(i=h=300+C(j)*99|0;--i;x.fillRect(500+99*j+S(t)*300-r*i/8,600+(i%5?i-h:h-i),i/4,2))r=1+S(i*i+j)+S(i%5?0:t+i)-C(t)

Oct 7 2021 5:10 PM UTC

}// 138/140

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Treefault 🌲 #default

u/danny@hille.dk

⚓Way hay and up she rises⚓
u/magna

Ahahah. Thank you for this!
u/magna

#meta
u/KilledByAPixel

you inspired the idea!
u/vain

amazing

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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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