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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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

show FPS hide FPS share 2 remixes fullscreen

New_Core

function u(t) {

for(i=500;i--;x.fillRect(960+400*S(i)*Z,540+i*C(i)*Z,a=i/2*Z,a))Z=2**T(i*8+t),x.fillStyle=`hsla(${i/2+t*5},99%,50%,.02)`

Jun 24 2019 8:36 AM UTC

}// 121/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/katkip

hyperspace tunnel
u/donbright

my goodness this is rather profound
u/joeytwiddle

#tunnel #clouds

show FPS hide FPS share fullscreen

mildlybean

function u(t) {

H=h=>x.moveTo(961,q=541)|x.lineTo(960+S(h)*q,q-C(h)*q);d=new Date;H((d.getHours(c.width+=m=d.getMinutes()/60)%12+m)/1.9);H(m*6.3);x.stroke()

Dec 18 2019 1:21 AM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Clock

u/katkip

#clock #time
u/DataMeta

Nice one. Can use this to demonstrate that JS uses the client's local environment clock

show FPS hide FPS share 1 remix fullscreen

Xen

remix of d/5852 by u/sigveseb

function u(t) {

x.globalCompositeOperation='xor'
x.fillRect(C(t)*2e3+S(t),0,19,9)
x.drawImage(c,0,9)
x.fillStyle=`hsl(${t*99},90%,50%)`

Jan 10 2018 8:16 PM UTC

}// 119/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

sigveseb/xen Dweetchain: #12

u/lionleaf

#sigveseb_Xen_remix_chain

show FPS hide FPS share fullscreen

jpgravel

remix of d/26082 by u/jpgravel

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𪐽𭰽𜠵𝠻𪐼𜱥𝀻𚑔🠱🱣𛐽𚁔🠱𝠩𚡓𚁕𛱔𛁵𚰽𠰨𥐯𥀩𚡔𚱃𚁖𛱔𚐪𥀬𥀯🐲𚐺𮀮𩡩𫁬𤡥𨱴𚁡🐫𚱩𙑷𛁢👩𛱷𚰹𜀬𜐬𛑵𛰲𜀬𫀽𚀱𛐲𚡃𚀴𚡴𚐪𨰩𚠱𜀬𮀮𩡩𫁬𤱴𮑬𩐽𤠨𭐯𝠫𫀬𭐯𝰫𫀬𭐯𞀫𫀩𛁣🐰𛁵🐴𚡷𛁔🐲𚡷𛁖👢𚠹𛁕👡𛱢𚡵𚐠`.replace(/u../g,'')))

Sep 3 2022 5:39 AM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Mountain peaks

show FPS hide FPS share fullscreen

KilledByAPixel

remix of d/13291 by u/KilledByAPixel

function u(t) {

t||x.rotate(.7854,x.font="300px'",x.fillText("ᴛʜᴇ 𝕃ᴇɢᴇɴᴅ ᴏꜰ 𝔻ᴡᴇᴇᴛ",210,1e3,1500))
for(i=1024;i--;)x.fillRect(705+(i&i/t),370-i,9,9)

Apr 20 2019 12:11 AM UTC

}// 131/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

♥ ♥ ♥ #Zelda

u/KilledByAPixel

#sierpinski
u/Xen

its not.. but feels like triforce,,,,, new dwitter age maybe
u/KilledByAPixel

is better than triforce, has infinite triangles instead of just 3
u/katkip

#design
u/KilledByAPixel

#logo

show FPS hide FPS share fullscreen

yavasadam

function u(t) {

eval(unescape(escape`󩌽󚍦󛍩󛍴󛍣󛍬󟜢󘼰󡬰󘬩󟜾󮽸󛭦󪝬󫍓󭍹󫍥󟝬󛍸󛭦󪝬󫍒󩝣󭌨󩬬󪜬󭌬󨼩󯜻󩌨󜌬󜌬󜜹󜬰󛌱󜌸󜌬󘬣󡭆󡬢󚜻󬼽󤼨󭌭󜜩󚬱󜌰󜌻󨼽󠼨󭌩󚬱󜌰󜌻󩌨󞜶󜌬󝜴󜌬󬼬󨼩󞽤󚌹󝬰󛌵󝌰󛍣󛍳󛌢󘼰󜌰󘬩`.replace(/u../g,'')))

Feb 2 2024 3:22 PM UTC

}// 116/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share fullscreen

pavel

function u(t) {

for(let i=2e3,f=(x,n,c=8-(t+6)*n)=>~n&(x*x*n*n+(8+(t-12)*n)**2+c*c-5)**2/16+c*c>1?f(x,n+=.002):c;i--;)x.fillRect(i,t*180,f(i/135-7,.7),3)

Apr 23 2020 7:27 AM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Actually #raytracing a #torus using ray marching

Show more comments…
u/Xen

Sweeet!
u/tomxor

Yes! we need more explicit surfaces on dwitter :)
u/Odog8

which expression is the DFT?
u/tomxor

I'm confused... this isn't explicit? it recurses.
u/pavel

This recurses just to advance ray length.
u/pavel

The closed form expression is x*x*n*n+(8+(t-12)*n)**2+c*c-5)**2/16+c*c-1 where c=8-(t+6)*n and n is the free variable.
u/tomxor

Ah, so is this technically ray casting? I have to ask because I still don't intuitively get all of the math.
u/tomxor

Sorry I meant ray marching
u/pavel

Yes. The math constructs a ray from (0,8,8) looking at (0,0,0), varied a bit depending on the pixel being drawn, its length is a function of n. I plug this into the equation for a torus and increment n from .7 to -1 until I find a zero of the equation.
u/pavel

Here is a version without much golfing that makes things clearer for(let i=2e3,f=(o,n,x=o*n,y=t/3*n-n,z=4-n)=>z>-1&(x*x+y*y+z*z+3)**2>16*(x*x+y*y)?f(o,n+.01):z;i--;)x.fillRect(i,t*180,f(i/540-16/9,3),3)
u/pavel

(x*x+y*y+z*z+3)**2>16*(x*x+y*y) is directly from https://en.wikipedia.org/wiki/Torus
u/pavel

with R=2 and r=1
u/pavel

This example shoots rays from (0,0,4). In order to rotate the shape you have to move where the rays come from, the camera!
u/tomxor

Thanks for the explanation 👍

show FPS hide FPS share fullscreen

Purpzie

remix of d/10165 by u/Purpzie

function u(t) {

r=_=>Math.random()-.5;c.width|=0;x.fillStyle=R(t*25);x.font=`${t*99}px"`;x.fillText('FRICK',300-t*25+r()*t*5,600+t*25+r()*t*5)

Aug 11 2019 2:25 AM UTC

}// 126/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

when someone says not to swear

u/katkip

Welcome back to dwitter, female humanoid
u/katkip

#meme #text
u/13thptr

wb
u/joeytwiddle

🙊
u/lewdev

"FRICK" intensifies

show FPS hide FPS share 1 remix fullscreen

DonKarlssonSan

function u(t) {

x.fillStyle=`hsl(${(t+99)**9%360},70%,60%)`
for(i=0;i<999;i++)r=(t*i)**4*2e5%2e3,s=(t*i)**6*3e5%1080,
x.fillRect(r,s,50,4)

Jan 12 2018 9:35 PM UTC

}// 122/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share 1 remix fullscreen

smtsjhr

remix of d/19898 by u/smtsjhr

function u(t) {

eval(unescape(escape`𬰽𝀰𒡦𫱲𚁗👣𛡷𪑤𭁨𯀽𪐽𜀻𪠽𪐥𜠬𪐼𝰰𜀻𪐫𚰩𮰊𬠽𬰪𣑡𭁨𛡲𨑮𩁯𫐨𚐯𞀊𨐽𬰪𚁩𙐵𜀭𪐥𜠩𒡢👳𚠨𪐭𪐥𝐰𚐯𜠵𒡤🐨𚁡𛱗𛐮𝐫𛠲𚡃𚁴𚐩𚠪𜠫𚁢𛱗𛐮𜰫𛠲𚡓𚁴𚐩𚠪𜠩𚠱𝐊𮀮𩡩𫁬𤡥𨱴𚁲𚡤𚱡𛁲𚡤𚱢𛁳𚠨𛠲𚱪𚠱𛠸𚐬𜠪𬰭𬰪𪠪𜐮𞀩𯐻`.replace(/u../g,'')))

Sep 10 2020 12:35 AM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

SOURCE (189/140): s=40;for(W=c.width|=i=0;j=i%2,i<700;i++){r=s*Math.random()/8;a=s*(i%50-i%2);b=s*(i-i%50)/25;d=((a/W-.5+.2*C(t))**2+(b/W-.3+.2*S(t))**2)*15; x.fillRect(r*d+a,r*d+b,s*(.2+j*1.8),2*s-s*j*1.8)}

u/smtsjhr

i had to golf this code to get the original d/19898 under 140, but lost the "focal point" effect achieved here. In need of a shorter way to compute the (euclidean) distance from the focal point (defined by "d" in the code).
u/smtsjhr

please excuse my poor etiquette for i have now learned about code blocks and replacing EVAL with THROW to display compressed code, and the Discord for chat : )
u/Xen

nice!