Dweets awesomed by u/Odog8

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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danny@hille.dk

remix of d/20135 by u/danny@hille.dk

function u(t) {

f=i=>S(t+y/255*C(t)+i*1.57)*120;for(y=c.width|=0;y--;)for(i=4;i--;)n=f(i),m=f(i+1),n<m&&x.fillRect(n+f(y/255)+940,y,k=m-n,(i%2?k:99-k)/120)

Sep 3 2021 12:37 PM UTC

}// 140/140

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Twisted metal remix #uncompressed

u/danny@hille.dk

This is a personal thing!!! Twister2d is one of my favorite old school effects, it's also one of the first things i tried to golf to fit into a dweet (and I failed miserably :-)) I have retried tried (and failed) a couple of times, but this is the first time i actually managed to get the damn thing to fit without compression. I had to scarifice colors to maintin an interesting animation. Perhaps I'll get it next time :-) #twister #twister2d
u/New_Core

it look great...
u/DataMeta

beautiful #grayscale

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danny@hille.dk

remix of d/23599 by u/danny@hille.dk

function u(t) {

c.width=w=92;for(i=6e3;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w*5&w^w*a*2+w+t*w&w))/w,.7/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-.4+i/7e3)

Sep 2 2021 3:45 PM UTC

}// 139/140

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uncompressed tunnel remix

u/tomxor

Interesting an-anisitropic event horizon in the middle :P
u/danny@hille.dk

:P I couldn't fit the code to darken by depth...
u/danny@hille.dk

heres another interesting rendition c.width=w=127;for(i=1e4;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w&w^w*a+w-t/5*w&w))/w,.5/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-i/-9e3)
u/danny@hille.dk

#tunnel

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TGY

remix of d/23667 by u/Joachim

function u(t) {

c.width|=t?0:d=p=[]
Y=540
d++%9<6&&p.push({Y,s:1,X:Y+Y*S(t)**2})
for(i of p)with(i)x.fillStyle=R(s,a=s/20,s),x.fillRect(X-s/2,Y+=a,s+=a,a+9)

Aug 29 2021 1:53 PM UTC

}// 140/140

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Joachim

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟝴󟼰󞭤󟝰󟝛󧜊󩌫󚼊󩌥󞜼󝬦󙭰󛭰󭝳󪌨󮽸󞬹󝬰󚽓󚍴󚜪󜬰󜌬󮜺󝜴󜌬󬼺󜜬󬬺󤼨󭌪󞜩󯜩󒭦󫽲󚍩󘍯󩬠󬌩󮽳󟝩󛭳󒭸󛭦󪝬󫍒󩝣󭌨󪜮󮌭󬼯󜬬󪜮󮜫󟝳󛼵󜌬󪜮󬼪󟜱󛬰󝜬󬼯󝌰󚜊󮌮󩭩󫍬󤭥󨽴󚍩󛭸󚽳󛽩󛭲󛍩󛭹󛝳󛍳󛼹󛍳󚜊󮌮󩭩󫍬󤭥󨽴󚌰󛌵󝌰󛍳󛌲󚝽`.replace(/u../g,'')))

Aug 28 2021 1:39 PM UTC

}// 140/140

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old, #infinite #road

u/Joachim

#perspective
u/rodrigo.siqueira

Almost a car #game. Better than Atari's Enduro.
u/vain

just wow!

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taupelink

remix of d/23662 by u/taupelink

function u(t) {

for(i=k=255;--i;x.fillRect(k*--X,630-i*Y,i*(q*q%t<t**-t),q/Y/t))f=i*t,X=f*f%8,Y=T(X*f),x.fillStyle=R(q=i*Y,q/=T(X/3)<Y?6/X:-.8,q^=k,i*X/q/q)

Aug 28 2021 6:17 AM UTC

}// 140/140

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d/23666

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Joachim

function u(t) {

eval(unescape(escape`󮬽󨼮󭽩󩍴󪍼󟝴󟼰󞬨󨬽󮽸󞬹󝬰󛍹󞬵󝌰󯜬󫌽󜌩󒭸󛭦󪝬󫍒󩝣󭌨󨬮󮌬󨬮󮜬󞜹󛌹󞜩󒭸󛭦󪝬󫌨󮌮󨝲󨼨󭌪󞜹󞜫󫌬󝜷󜌫󫌬󜬵󛌰󛌷󚜩󒭩󩬨󭌾󜜩󮽢󛭸󚼽󜜰󛽴󒭬󛜽󜜰󛽴󒭴󟌲󟽢󛭹󚼽󤼨󭌭󜜩󚬹󞬰󯜊󮌮󩭩󫍬󤭥󨽴󚌹󝬰󛌶󜼹󛌹󞜬󜬴󝜩󒭸󛭦󪝬󫍒󩝣󭌨󜌬󞌸󜌬󮬬󞜩`.replace(/u../g,'')))

Aug 27 2021 8:00 AM UTC

}// 140/140

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block #physics

u/vain

wtf? great physic like fx

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pavel

function u(t) {

with(x)for(i=w=t?0:2e3,h=540;y=h*S(i*i--);beginPath(fill(rect(690,491,h,98))))ellipse(i,h+y,2,20,Math.atan2(y-(i-720)*(i-1200)/y,2*i-w),0,7)

Aug 19 2021 6:31 PM UTC

}// 140/140

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#magnet

u/tomxor

Perfect
u/danny@hille.dk

very nice indeed
u/tomxor

And considerate t?0:2e3 :D

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lerc

remix of d/20904 by u/lerc

function u(t) {

eval(unescape(escape`𭁼𯀨𨰮𭱩𩁴𪀽𝀰𜀩𒡬👡🐾𚁸𛡤𬡡𭱉𫑡𩱥𚁣𛀭𭰬𛑨𚐬𤰨𭀪𨐩𚰱𚐊𮀮𬱥𭁔𬡡𫡳𩡯𬡭𚁁🐱𛠰𜐬𠠽𛠰𜐬𛑂𛁁𛁷🐲𜀰𚱓𚁴𚐪𚁑🐴𜀩𛁨🐹𞐫𠰨𭀩𚡑𚐊𮀮𩡩𫁬𤱴𮑬𩐽𤠨𜀬𜀬𪀪𫀨𜐮𝐩𚐊𮀮𩡩𫁬𤡥𨱴𚁵🐨𫀨𜠮𜐩𛑬𚀱𚐩𚡑𛀭𭐬𝀬𝀩𒠻`.replace(/u../g,'')))

Aug 16 2021 1:49 PM UTC

}// 135/140

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Night Flight

u/rep_movsd

The initial part looks like a rock

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mxfh

remix of d/23551 by u/mxfh

function u(t) {

I=new ImageData(w=2048,w)
b=new Int32Array(I.data.buffer)
for(i=3e6;i--;b[i]=(i-Y&Y+i)*-t/i%i<<22)Y=i*w
x.putImageData(I,0,0)

Aug 15 2021 2:06 AM UTC

}// 125/140

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https://www.dwitter.net/d/23557 so with some space for setting up other buffer view, it speeds things up when treating rgba Uint8Clamped Array as single 32bit value

u/mxfh

wondering if we could store that buffer somwhere to do truly iterative fractal stuff
u/taupelink

trippy!

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tomxor

remix of d/23544 by u/pavel

function u(t) {

for(a=Math.abs,c.width&=i=4352;X=1-(T+i/32)%2,Y=--i/2e3;x.fillRect(X*r+64*T,Y*r+96-64*a(S(t)),T=a(2-t%4)+1,(i^i/64)/8&1))r=64/(--Y*Y+X*X+1)

Aug 13 2021 12:57 AM UTC

}// 139/140

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Smoother #Amiga #Ball

Show more comments…
u/tomxor

..But less authentic. Remaps the pixel positions rather than texture, which gives "free" antialiasing, with spare space to correct the spin.
u/pavel

Oh yeah, nice. This is definitely a better way of doing it. The other mapping has an incorrect center that I have to waste characters to correct.
u/pavel

-2 char using S(t%3.14) to bounce and inlining the single Math.abs call
u/danny@hille.dk

What a clever trick, using modulus pi of t, to only get the positive part of the sinus curve
u/danny@hille.dk

3.2 works fine, while 3 and 3.1 looks wrong
u/danny@hille.dk

test code: c.width|=0,x.fillRect(o=860,o-S(t*4%3.2)*o,200,200)

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