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 1 remix fullscreen

cantelope

remix of d/2394 by u/Jenky

function u(t) {

t||(w=c.width=568)
with(x)onmousemove=e=>lineTo(X=e.pageX,Y=e.pageY),fillStyle=R(Y,X,Y,.2),fillRect(0,0,w,w),beginPath(stroke()),moveTo(X,Y)

Apr 6 2017 2:13 AM UTC

}// 140/140

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

If you set canvas.width to client.width, you can remove the bit that fixes the mouse position. This one only works at the default width (not fullscreen) because I had to hard-code the canvas width to make room for the fade effect. Nesting stroke inside beginPath saved 1 crucial byte. :)

u/cantelope

canvas.clientWidth rather
u/cantelope

i will give 3 gold stars to anyone who can fix the initial "Y is not defined" error :D
u/magna

Since your dweet doesn't use trig, we can hijack C and S as declared variables: https://www.dwitter.net/d/2429
u/magna

Can save another 2 bytes by: R(Y,X,fillRect(0,0,w,w),.2,beginPath(stroke()),moveTo(X,Y))

show FPS hide FPS share 1 remix fullscreen

lewdev

remix of d/28363 by u/lewdev

function u(t) {

eval(unescape(escape`瑼簨瀽孝Ᵽ⹷楤瑨㵷㴳㈰ⱪ㵬㴾砮晩汬却祬攽氬爽䵡瑨⹲慮摯洩੪怣〰〰〰〵总砮晩汬剥捴⠰ⰰⱷⱷ⤊景爨椽㌹㭩ⴭ㭪怣うだⱰ孩崽社眦♲⠩㸮㤿〺⡰孩嵼〩⬱⥸⹦楬汔數琨繾⡲⠩⨹⤬椪㤬礽灛楝⨹⤠`.replace(/u([^D].)/g,'$1%')))

Oct 8 2023 2:25 AM UTC

}// 139/140

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

#Matrix Rain with #numbers (code golfed)

u/lewdev

#matrix #rain

show FPS hide FPS share 1 remix fullscreen

username

remix of d/13780 by u/username

function u(t) {

eval(unescape(escape`𭀿𫱮𨱬𪑣𪰽𧰽🡙𙠡𨠿𜀺𦐫👨𞡘👙🐹𒡣𛡷𪑤𭁨𯀽𫱮𪱥𮑤𫱷𫠽𧰽🡘𚰽𧰮𭱨𪑣𪀽🐳𞐿𝀲𞠭𝀲𒡸𦰤🐧𩡩𫁬𤡥𨱴𙱝𚀰𛀱𩐳𛀲𩐳𛁨🐱𞐸𚐊𫀽𞀴𜠻𨠽𦀾𫀭𪀦𦀼𫀫𪀦𦐽👨𒡸𦰤𧐨𦀬𜑥𜰭𪀪𜠭𚁙👙🀹𯁢🱙🠹🱙𞠰𞡙𛐹𚐬𪀬𪀪𜠩𒡸𦰤𧐨𫀬𜑥𜰭𪀬𪀬𪀩`.replace(/u../g,'')))

May 13 2019 6:13 AM UTC

}// 140/140

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

Dwump and run V2. Arrow keys to run & tap to jump! You can jump onto the square :)

u/username

#interactive #game

show FPS hide FPS share 1 remix fullscreen

lionleaf

remix of d/155 by u/lionleaf

function u(t) {

c.width=2e3;m=S(t*7)*250;x.translate(960,540);for(i=1;i<9799;i++){a=(i%340);x.rotate(.017);x.fillRect(a?(i/999|0)*50:0,m,a?5:450,9)}

Feb 25 2017 6:35 PM UTC

}// 132/140

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

luta

function u(t) {

if(t<.2)for(i=2e3,Y=333+3e3*t;i--;x.fillRect(i,Y,.2+(Y-i*3)/2e4,999))Y-=4.71*C(Y-t)

Jul 13 2026 5:18 AM UTC

}// 83/140

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

Here comes the sun

show FPS hide FPS share 1 remix fullscreen

iverjo

remix of d/8018 by u/cesque

function u(t) {

t*=4;c.width|=0
x.lineWidth=10
for(i=1;i<9;i++) {
  x.beginPath()
  x.arc(960,540,50+(i*50),t+(i*3)+S(t),t+(i*3.1)+3.6)
  x.stroke()
}

May 7 2018 5:14 PM UTC

}// 134/140

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

magna

remix of d/24181 by u/magna

function u(t) {

t||(x.fillStyle='#008',x.fillRect(0,0,2e3,2e3))
for(i=575;i--;x.fillText('🔵',(i&31)*64+C(p)*r,(i>>5)*64+S(p)*r))T=(7-t)**.5,r=T*16,p=T*2.283

Oct 20 2021 3:46 AM UTC

}// 140/140

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

#pattern

show FPS hide FPS share 1 remix fullscreen

Dewis100

function u(t) {

c.width|=0;for(i=0;i<99;i++)x.fillStyle=`hsl(${i*3.6},100%,50%)`,x.fillRect(960+300*Math.sin(t+i),540+300*Math.cos(t+i),50,50)

May 13 2024 9:41 PM UTC

}// 127/140

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 2 remixes fullscreen

tomxor

remix of d/20657 by u/dnmc

function u(t) {

for(c.width&=i=8320;i--;)
x.fillRect(X=i&127,Y=i>>7,
k=S(8*t+X*X+Y*Y+X*Y)+.5,k)

Nov 18 2020 1:33 AM UTC

}// 79/140

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

Nano Snakeskin

u/bandaloo

this is great! i'll definitely be using this substitute for a doubly-nested for loop
u/DataMeta

agreed, cool trick! even more succinct than the nested hack I've been using, and the perf increase from bitwise ops is welcome
u/tomxor

Yes, I've used this so much, I guess it's just more obvious in this one. I've taken technique a step further in d/20707 converting yonatan's 3 loops into one. bitwise can be very powerful to manipulate the variables a loop traverses.

show FPS hide FPS share fullscreen

Cloud

remix of d/24377 by u/Cloud

function u(t) {

c.width|=0
x.lineWidth=9
for(i=0;i++<100;){
a=5-(i*.05+t/2)%5
s=20/a
x.strokeRect(960+a-s,540-(C(i/4)*60+S(t*2.5-1)*60)/a-s,s*2,s*2)
}

Nov 25 2021 1:44 PM UTC

}// 134/140

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

#tonel

u/andrea270872

nice. I get a roller coaster vibe :)
u/vain

cool trip. reminds me of some amiga demos.