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.

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Current theme challenge: #Opposites

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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/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

Show more comments…
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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tomxor

remix of d/32885 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀦👩🐱𝠵𜐲𞱩𞱓𚰽𦀬𠰫👒𛁔𚰽𭐩𚁓𛰸𧡃𛰸𧡔𛰱𜐩𙐱𝑼𯀨𦀽𤠬𤠽𭐬𬠽𨱛𪰽𦱾𤰬啓𛁾𥁝𧑼👵👓𚡴𙐲𛐱𛀭𛑩🠱𩐴🱩𙐴🱣𦱫𧐫𚰺𤰽𠰽𥀽𞐰𞡸𛡦𪑬𫁒𩑣𭀨𦀽𪐦𜐲𝰬𤠽𪐾🠷𛀸𛰨𞀫𬠯𭀩𛁵🐱𛁔🐶𝀬𦀽𦀯𥀭𜐬𤠯👔𛁃👓👴𙐶𚠲𝀩𚐻`.replace(/u../g,'')))

Dec 21 2024 12:27 AM UTC

}// 140/140

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Realtime Photon-Mapping 2

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tomxor

remix of d/28559 by u/384.cz

function u(t) {

scrollBy(document.write(frame%9?'aábcčdďeéěfghiíjklmnňoópqrřsštťuúůvwxyýzž   '[S(T(t+=9)*t)*22+22|0]:` ${Object.keys(window)[t*t&255]} `),9)

Sep 27 2023 11:12 PM UTC

}// 140/140

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Czechno Babble :P

u/Joachim

Hahaha love it #waitforit
u/384.cz

interesting idea, tomxor

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tomxor

remix of d/26186 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𩠽𚁘𛁙𛁚𛁁𛁥𚐽🡸𛡦𪑬𫁒𩑣𭀨𩐿𜀺𩀪𦀬𩀪𦐬𭰽𩑼𯁤𚡚𛰮𞀬𭰬𦠾𛠲𙠦𩠨𦀫𦠪𤰨𠐩𛁙𛑚𚡃𚁁𚐬𦠪𛠹𝐬𠐩𛁚𚡙𙐱🠮𞀦𙡦𚁘𛁙𛁚𚠮𞀬𠐫𦐥𜠭𜐩𚐻𩀽𜐫𭀪𭀯𜠻𮀮𩡩𫁬𤱴𮑬𩐽𤠨𪰽𜠵𝐭𭀪𝠰𛁫𛁫𚐻𩠨𩀪𞑥𞐥𜱥𜰬𩀫𜠵𝐬𞐬𜀬𜡥𜰩`.replace(/u../g,'')))

Sep 25 2022 6:50 PM UTC

}// 135/140

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Smolr Deterministic Misty Forest 🌳

u/tomxor

-10 bytes, like sqeezing a diamond this one 🥲

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