Dwitter - javascript demos in 140 characters

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 fullscreen

pavel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡩㵣⹷楤瑨簽栽ㄮ㔷〸㭪㵩ⴭ㸾㔻獴牯步⠩⥳整呲慮獦潲洨㤬〬〬㤬⡩☳〩⨸ㄬⴭ横ㄶ㈩Ɫ敧楮偡瑨⡲潴慴攨栯⠱⬱改⨪匨琫⡩㸾ㄩ⨨樫ㄩ⤩⤩ⱡ牣⡰㵩┲⨱㠭㤬瀬㤬愽㈪株椬愫栩`.replace(/u(..)/g,"$1%")))

Dec 20 2018 12:45 AM UTC

}// 132/140

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

u/katkip

Cool
u/magna

#truchet
u/pavel

with(x)for(i=c.width|=h=1.5708;j=i-->>5;stroke())setTransform(9,0,0,9,(i&30)*81,--j*162),beginPath(rotate(h/(1+1e9**S(t+(i>>1)*(j+1))))),arc(p=i%2*18-9,p,9,a=2*h*i,a+h)

show FPS hide FPS share fullscreen

pavel

function u(t) {

for(c.width|=i=16,x.scale(2,2);i--;x.moveTo(480,0),x.arc(480-r*S(a=C(40*t/r**.5)),r*C(a),r/16,a-11/7,9))r=4e4/(9+i)**2;x.stroke();x.fill()

Dec 20 2018 7:18 AM UTC

}// 138/140

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

#pendulum #waitforit

u/katkip

Nice
u/cantelope

can save a byte by nesting x.fill(x.stroke())
u/katkip

It's better than d/6440

show FPS hide FPS share fullscreen

katkip

function u(t) {

x.beginPath(),x.arc(t*99+C(-t+Math.PI)*99,t*99+S(-t+Math.PI)*99,10,0,7),x.fill()

Dec 23 2018 1:32 PM UTC

}// 80/140

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

Vsauce's Brachistochrone in 80 bytes https://youtu.be/skvnj67YGmw

u/jylikangas

65b after some golf tricks... x.fill(x.arc(t*T+C(a=3.14-t)*T,t*T+S(a)*T,9,!x.beginPath(),T=99))
u/katkip

ow

show FPS hide FPS share 1 remix fullscreen

Nixotica

function u(t) {

w=c.width=1920;h=c.height=1080;for(i=50;i!=0;i--)x.fillRect((w-20)/2+(w-20)/2*S(t-i),20*i,20,20);

Dec 22 2018 2:32 AM UTC

}// 97/140

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

First time using this language and Dwitter. Figured this out after 2 hours of messing around.

show FPS hide FPS share 1 remix fullscreen

katkip

function u(t) {

t||x.translate(960,540);for(i=99;i--;)x.fillStyle=i%2?'#fff':"#000",x.fillRect(-i*10,-i*10,20*i,20*i),x.rotate(2.3)

Dec 22 2018 6:48 PM UTC

}// 115/140

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(w=i=c.width|=h=Math.PI/2;i--;x.fillRect(w/2+r*C(i+t),(i<w/3?w/3:i)/2+r/2*S(i+t)*S(t),4,10))r=(i<w/2?i:w-i)/2/C(i%h-h/4-(i%h>h/2)*h/2)

Dec 19 2018 10:57 PM UTC

}// 137/140

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

Diamond

u/joeytwiddle

#model
u/f8f82804

#d3

show FPS hide FPS share fullscreen

trupples

function u(t) {

w=c.width|=0
x.font="9em'"
x.fillText("DVD",w*((A=t*999/w)&1?(A%1):(1-A%1)),(h=c.height)*((B=t*999/h)&1?(B%1):(1-B%1)))

Dec 22 2018 3:50 PM UTC

}// 119/140

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

#dvd

show FPS hide FPS share 1 remix fullscreen

katkip

function u(t) {

for(i=99;i--;)x.fillStyle=R(0,128+128*S(i*i+t)),x.fillRect(960,200+i*7,20*S(i+t)*i/9,20*S(i+t));x.fillStyle='#841';x.fillRect(920,880,80,45)

Dec 22 2018 2:21 PM UTC

}// 140/140

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

Christmass Tree

u/katkip

#christmas #xmas

show FPS hide FPS share fullscreen

cantelope

remix of d/11465 by u/pavel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡦楬汒散琨〬〬挮睩摴桼㵩㴵ⰲ攳⤬獣慬攨㤬㤩ⱱ㵃⠵⩴⤻椭ⴻ晩汬⡳瑲潫攨⤩⥳瑲潫敓瑹汥㵦楬汓瑹汥㵠⍦〸怬浯癥呯⡘㴷㈫ㄷ⩩ⰰ⤬慲挨堭㘵⩓⡡㴨焾〿椺椭㐩㽱⼵〺焩ⰶ㔪䌨愩ⰸⱡⴱ⸵㜬㜩`.replace(/u(..)/g,"$1%")))

Dec 20 2018 7:24 PM UTC

}// 139/140

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

u/katkip

More #physics?

show FPS hide FPS share fullscreen

pavel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡣⹷楤瑨簽椽㌸㐻樽椭ⴾ㸵㭳瑲潫攨⤩景爨獥瑔牡湳景牭⠹ⰰⰰⰹⰨ⡩☲㠩⵪┲⨲⤪㠰Ⱝ⵪⨱㘰⤬牯瑡瑥⡩⨳㔵⼲㈶⤬扥杩湐慴栨欽㌩㭫ⴭ㬩汩湥呯⠳ⴳ⩫ⰹ⬨㈭欥㈩⨨㌭㘯⠱⬳攲⨪匨㌪琩⤩⤻`.replace(/u(..)/g,"$1%")))

Dec 20 2018 12:41 AM UTC

}// 138/140

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

u/katkip

Beautiful
u/katkip

Beautiful
u/pavel

with(x)for(c.width|=i=384;j=i-->>5;stroke())for(setTransform(9,0,0,9,((i&28)-j%2*2)*80,--j*160),rotate(i*355/226),beginPath(k=3);k--;)lineTo(3-3*k,9+(2-k%2)*(3-6/(1+3e2**S(3*t))))