Top dweets by u/tomxor

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: #Food

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tomxor

remix of d/24161 by u/FireFly

function u(t) {

with(x)for(i=64;i--;font='4cm"')fillRect(X=i%8*T,Y=i/8<<7,X+Y&T,t?fillStyle=R(T):T=128),fillText('♜♞♝♚♛♝♞♜♟♟♟♟♟♟♟♟'[i^(i>>5)*63]||'',X,Y+T)

Oct 19 2021 3:15 AM UTC

}// 139/140

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smolr #chess board

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u/tomxor

different strategy, draw the board on the first frame, pieces on the rest
u/FireFly

ohhh that is good, was too tunnelled in on the setups I'd tried.. good job 🎉
u/TGY

now comes the real challenge "e2-e4"
u/tomxor

fillText Y=i==52?Y-T:Y+T, but can't animate with this method. Don't think it's going to be possible in 140 ether.
u/DataMeta

ugh yes. so satisfying
u/sigveseb

very good, but the king and queen on one side are reversed!
u/tomxor

oops good spot

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tomxor

remix of d/23549 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨐽𣑡𭁨𛡡𨡳𛁣𛡳𭁹𫁥𛡢𨑣𪱧𬡯𭑮𩀽𙰣𞐹𞐧𛁣𛡷𪑤𭁨𙠽𪐽𝀳𝐲𞱘🐱𛐨𭀫𪐯𜰲𚐥𜠬𦐽𛐭𪐯𜡥𜰻𮀮𩡩𫁬𤱴𮑬𩐽𚁩𧡩🠾𝠩𙠸🰧𬡥𩀧𞠧𘱦𩡦𙰬𮀮𩡩𫁬𤡥𨱴𚀶𝀪𚁘𛱲𚱡𚀲𛑴𙐴𚐫𜐩𛀹𝠭𝠴𚠨𦐯𬠫𨐨𤰨𭀩𚐩𛁫🐵𛱲𛐲𛁫𚐩𬠽𛐭𦐪𦐫𦀪𦀫𜐻`.replace(/u../g,'')))

Aug 13 2021 9:03 PM UTC

}// 140/140

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Smooth Colour #Amiga #Ball

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u/tomxor

If someone can squeeze in a hard shadow and a purple grid we will be done.
u/danny@hille.dk

Beautiful
u/danny@hille.dk

I distinctly remember the grid to be blue... but all the youtube videos shows it to be purple... I think it's a conspiracy :-)
u/ullo

i like
u/KilledByAPixel

dweetabase updated! https://dweetabase.3d2k.com/
u/tomxor

I can't find it now but I seem to remember reading about how emulated colours of amigas look different from real amiga video output. The emulators are probably just spitting out the RGB values and letting the host OS do the gamma etc. I suspect real amiga video output must have been a bit "coloured" which causes this difference.

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tomxor

remix of d/12335 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𮁛𩠽𙱦𪑬𫁒𩑣𭀧𧐨𜀬𜀬𨰮𭱩𩁴𪀽𜐸𜀬𪐽𫀽𜐵𜰰𚐻𪐭𛐻𮁛𩡝𚁘𚠶𛁙𚠶𛀱𚱋𛀵𚐩𦀽𪐥𞐰𛰳𛁙👩𛰹𜀬𡠽𜐫𭀪𭀭𪐯𫀬𠐽𦀫𞀪𤰨善𛰹𚱙𛰹𚐬𢰽𜐭𡠥𜐭𘐨𠐯𜐷𛐱𝠯𜐸𯁙𛰴𛐱𜀯𝑼𠐫𜠦𜠩𛰲𛁸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𪐪𜐲𜁽𘀹𞐥𙁻𢰪𞐹𯐥𨀻`.replace(/u../g,'')))

Feb 18 2021 2:10 PM UTC

}// 140/140

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#retro #crt #default

u/tomxor

With subpixel anti-aliasing :) ... ok that was an accident... but atand back and look at those cute RGB fringes!

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tomxor

remix of d/21547 by u/tomxor

function u(t) {

for (c.width=128, i=8192; i--;) x.fillRect(
	X=i&127, Y=i>>7, 1,
	!( X/34-65/35 | Y/8-37/9 | X+2&4 )
)

Feb 4 2021 12:26 AM UTC

}// 102/140

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#default #dweetsplain

u/tomxor

Each block is 4 pixels wide. Remove 2 of the three parts inside !( ) to see how each contributes to the shape. Make sure to leave an | 0 to the right in order to floor the result. Black represents 0, white represents 1 or more. The idea is to lay down three different layers, the non zero numbers all merge together throught OR, the black area that remains is the 0 from each layer.
u/tomxor

X/34-65/35 | 0 scales X so that -1 and +1 lie on the left and right edges with 0 in between. The width = 34=17*4px/2 (17 blocks and gaps, divided by two because it's from -1 to +1). 65=128/2+1, the center of the canvas+1 due to -0 bias divided by 35 to match the scale of X. Y/8-37/9 | 0 does the same for the top and bottom edges. X+2&4 creates a repeating pattern 0,4,0,4 every 4 pixels, +2 shifts it by half a block to line up with the left and right edges due to the odd number blocks required for the default.
u/Qwitter

thanks for this

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tomxor

remix of d/21363 by u/tomxor

function u(t) {

f=(a=0,b=0)=>S((d=9+Math.hypot(X+a-128,Y+b-64))/4)/d*12
for(c.width&=i=37120;i--;)
x.fillRect(X=i&255,Y=i>>8,Z=C(f(-8)+f()+f(8)+f(0,-32)),Z)

Jan 21 2021 9:51 PM UTC

}// 140/140

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#interference wave #baby

u/katkip

#cute

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tomxor

remix of d/19945 by u/katkip

function u(t) {

c.style.background='#ff0'
for(k=(8-t)*50,i=t^5&&t<10?180:0;i--;S(w*3)<C(w*3)&&x.fillRect(960+k*S(w),540+k*C(w),5,5))w=i/t

Sep 14 2020 1:17 AM UTC

}// 121/140

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Smaller toxic #sign

u/tomxor

... I'm in a golfing mood

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tomxor

remix of d/19279 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=9)=>n>X*X?f(X*X-Y*Y+C(X)-C(t*n/4),X*Y+1,n+S):x.fillStyle=R(n,n/3);for(i=9e3;i--;f(X/250-4,i/2e3-2))x.fillRect(X=i%128*S,i/8,S,S=16)

Jun 30 2020 11:23 PM UTC

}// 140/140

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Hmm, #julia set #fractal

u/tomxor

C(t*n)? Strange how it doesn't perceptibly speed up.

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tomxor

function u(t) {

c.width=99;x.fillRect(X+=a=S(X/30)<0?-a:a,Y+=b=Y>52?-b:b+.3,4,4)}{X=b=Y=a=1

Oct 26 2019 2:20 PM UTC

}// 75/140

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75byte #physics

u/tomxor

Perfect collision integration, since uniform gravity is constant it should cancel out in such a simple case, in which case integration can be skipped on a collision interval ?-b:b+.3 this is why it doesn't loose or gain significant hight on average
u/tomxor

To make it absolutely perfect this can also be changed to ?-b:b+.25 which will eliminate integration error since .25 is a non periodic binary fraction... it will bounce forever :)
u/tomxor

... but that would cost an extra byte so its no good !

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tomxor

remix of d/15979 by u/tomxor

function u(t) {

for(k=i=1e3;--i;x.fillStyle=R(a=99+S(j*7)*88,a,a))j=i/k+t/3,x.fillRect(k+S(m=k*j^k)*(r=7e4/i*(3+S(m*(j&7))*C(j*7)+S(j))),k-i+C(m)*r,r/2,r/2)

Oct 8 2019 10:55 PM UTC

}// 140/140

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Claustrophobia #waitforit

u/tomxor

Remember to breath!
u/DataMeta

Reminds me of The Enigma of Amigara Fault
u/tomxor

:O that was symultaneously terrifying and bizarre.
u/larzuk

epic

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tomxor

remix of d/12492 by u/tomxor

function u(t) {

for(c.width=E=X=N=64;X--;)for(Y=N;Y--;x.fillRect(X,Y,K=eval(R)/N%1,K))E+=' '+'XXYYtt-*%&~^'[0|12*Math.random()];eval(E=E.slice(-8-t%16));R=E

Feb 26 2019 12:59 AM UTC

}// 140/140

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Algebraic Monkeys #fuzzing #waitforit

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u/tomxor

Searching for f(x,y,t) this time. If you have more patience then add operators, parens and increase string length in the slice.
u/Xen

c.width=X=E=N=64 lol
u/tomxor

heh, i missed that opportunity
u/DataMeta

Clever concept, like some old tv grasping at transmissions.
u/DataMeta

Haha, Xen
u/tomxor

Nice analogy :) like a TV into the computable universe, infinite channel! (sorta)
u/21medals

Why the space in between each character of E?
u/tomxor

Because -- and ++ are assignment operators, and I cannot allow those on loops variables X and Y. It's basically cheaper in chars to pad with spaces than test for this with a regex.

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