Random dweets | Dwitter

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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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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f8f82804

remix of d/25539 by u/ArthurThuczsec

function u(t) {

with(x)for(i=s=311;--i;)fill(arc(s*(A=S(a=i/99))*S(b=t+i)+960,220*(A*C(a)*S(t)+S(a)+2),i,!beginPath(fillStyle=`hsl(9,90%,${99-i/2}%,.7`),7))

May 24 2022 6:02 PM UTC

}// 140/140

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#tongue

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taupelink

remix of d/15465 by u/taupelink

function u(t) {

for(i=d=e=f=g=1e3;i--;x.fillRect(120+d*z,z+e*z,1,1))[d,e,f,g]=[(r=Math.random(z=400)*9|0)/2+f*C(d+r),f-r%2+g*C(d^r),(r%2+f)/2,(r&4)/9+g/4]

Aug 23 2019 3:49 PM UTC

}// 138/140

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d/15504

u/taupelink

jumping on the "xor" bandwagon :)
u/katkip

looks like mountains #landscape
u/iverjo

#art
u/Qwitter

amazing!

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Pascal

remix of d/22362 by u/BackendForth

function u(t) {

c.width|=w=480;for(j=2;j--;)for(i=k=300;i--;x.fillRect(w+w*X/Z+w*j*2+Z*12*j,w-Y/Z*w,s=k/Z**2,s))X=3*C(U=i+t)+C(V=i*i),Y=S(i)+S(V)+1,Z=S(U)-5

May 1 2021 1:43 PM UTC

}// 140/140

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#stereograph #d3 donut, cross your eyes for a 3D effect

Show more comments…
u/erin

so cool
u/BackendForth

Nice!
u/magna

Nice! The z is inverted for me...
u/tomxor

Neat. Magna, are you uncrossing your eyes by any chance? :P (i.e making your eyes further apart)
u/magna

u/tomxor yeah! I've gotten used to relaxing my eyes and looking "afar", from the way SIRDS normally work. I don't I can cross my eyes without looking at something actually close to my eyes. I suspect most people are more comfortable with relaxing their eyes than crossing them...
u/smtsjhr

so fun!
u/joeytwiddle

If you are a person like magna, change: fillRect(w to fillRect(3*w and +w*j to -w*j

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Coalshork

function u(t) {

c.width|=0
for(i=960;i--;)x.fillRect(i*10,540+S(t*10+i/8)*i,10,10)

Dec 9 2024 7:10 PM UTC

}// 66/140

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loop test, string with damping

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zachygreen

function u(t) {

for(i=-1;i<1;i+=0.05){l=(1-i**2)**(1/2)
x.fillRect(960+900*(S(t)*l)/(2-C(t)*l),540+900*i/(2-C(t)*l),5,5)}

Nov 6 2024 5:58 AM UTC

}// 105/140

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u/cantelope

very small code!
u/fentbiggesthater

decent for a beginner. welcome to dwitter

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BriSeven

remix of d/17807 by u/BriSeven

function u(t) {

eval(unescape(escape`瑼簨愽䅲牡礨㕥㐩⹦楬氨㘮㌩⤬砮獴牯步却祬攽恨獬⠤笹㤪瑽‹㤥㔰╠ⱸ⹳瑲潫攨湥眠偡瑨㉄⡠䴹․笹㤪瑽池⭡⹭慰⡡㴾䌨愩⬢•⭓⡡⤩⤩ⱡ㵡⹭慰⠨愬攩㴾愫匨琪攪愩⼹⤻`.replace(/u([^D].)/g,'$1%')))

Apr 28 2025 6:33 AM UTC

}// 127/140

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Topological Mutation

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Xen

remix of d/18454 by u/ersagun

function u(t) {

t?x.rotate(!x.fillRect(0,0,5,399)):x.translate(960,540)

Apr 23 2020 2:37 PM UTC

}// 55/140

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#circlechallenge more Minimal

u/ersagun

just another way to exploit irrational numbers
u/Xen

Reality is chaos, Chaos is a fractal, All mostly infinite if you ask me

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contone

function u(t) {

x.setLineDash([9,50]);
x.clearRect(0,0,2e3,2e3)
x.lineDashOffset=f=frame
t<11?x.ellipse(960+S(t)*100,1e3-f,f,f/2,0,0,8):0
x.stroke()

Apr 14 2021 2:56 PM UTC

}// 132/140

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u/deltuhvee

Tornado
u/magna

Nicely done!

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tomxor

remix of d/26069 by u/jpgravel

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𪐽𪠽𭰽𜐲𞀻𪐼𜐳𩐳𞰩𛐭𪠿𦱃𛁔𧐽𦱃𚠮𞀫𥀪𛠶𛁔𚠮𞀭𠰪𛠶𛁚🐱🀼𪠬𭐫👓𚁃𛱚𚐪𦠯𞑝𞡸𛡦𪑬𫁒𩑣𭀨𚰫𪐥𭰬𪐯𭰬𜐬𛑵𛁸𛡦𪑬𫁓𭁹𫁥👒𚁵𚠷𛁵𚠶𛁵🀰🱷𞡵𚠵𚐬𠰽𪐥𭰪𝠬𥀽𪐯𜐲𛑴𚠴𜀬𭐽𜐴𛁪🐸𚐻`.replace(/u../g,'')))

Sep 2 2022 12:10 AM UTC

}// 129/140

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Smoler Mountain Range

u/tomxor

-12 bytes, hard won 🥲
u/jpgravel

Well done!