Dweets awesomed by u/artfarnaa

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 4 remixes fullscreen

artfarnaa

remix of d/3228 by u/cantelope

function u(t) {

for(i=(w=c.width=1e3),x.fillRect(0,0,w,w);i--;)x.clearRect(w/2+S(p=(q=Math.sqrt(i*2)*9)/(1.7545+(v=S(t))/30)+v)*q,290+C(p)*q,4,4)

Oct 2 2017 6:01 PM UTC

}// 129/140

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

lurifax

function u(t) {

for(i=9,e=T(t)*99;--i;x.fillStyle=`hsl(${S(t)*180+180},99%,50%`)x.fillRect(S(d=i*.8+t)*e+960,C(d)*e+540,9,9);x.drawImage(c,-9,-9,1938,1098)

Sep 30 2017 4:07 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/Xen

my kind of dweet :D
u/donbright

part where it comes back in from the border is excellent

show FPS hide FPS share 2 remixes fullscreen

lurifax

function u(t) {

c.width|=0;for(i=5;--i;)for(j=91;--j;x.fillStyle=`hsl(${j*4},99%,50%)`)x.fillRect(960+500*S(d=j*.0698)*C(e=t+i*.7853),540+500*C(d)*S(e),9,9)

Sep 30 2017 5:16 AM UTC

}// 140/140

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

u/Xen

very nice
u/lurifax

Remix #3241- With fix for the annoying black dot and golfed 17b :)

show FPS hide FPS share 2 remixes fullscreen

lurifax

remix of d/3178 by u/cantelope

function u(t) {

for(i=2e3;i--;x.fillStyle=R(C(t)*128+128,0,C(i)*128+128,.07))x.fillRect(960+S(p=i/314)*(d=250+S(p*3+C(t))*(S(t)*99)*C(t)*4),540+C(p)*d,9,9)

Sep 23 2017 6:55 PM UTC

}// 139/140

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

_nderscore

function u(t) {

t?(c.width|=0,x.font='92px a',x.fillText(p,S(t)*100+700,620)):speechSynthesis.speak(new SpeechSynthesisUtterance(p='Oh, hi there! 👋'))

Sep 5 2017 8:58 PM UTC

}// 134/140

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

u/magna

O HAI

show FPS hide FPS share fullscreen

Xen

remix of d/3102 by u/Xen

function u(t) {

c.onmousemove=e=>Z=e.offsetX;for(c.width|=i=99;i--;)x.ellipse(X=540,X,t,i*C(t)+X,(Z/c.width*2)*i*2.1,Z,T(t))
x.strokeStyle='#'+Z,x.stroke()

Aug 31 2017 12:31 AM UTC

}// 139/140

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

with mouse movement as requested.

u/donbright

cooool
u/iverjo

#interactive

show FPS hide FPS share fullscreen

Xen

remix of d/3124 by u/Xen

function u(t) {

x.font='300px X';x.fillStyle=R(t*66%(Y=255),t*33%Y,t*99%Y,.01);x.fillText('CodeGolfTeam Xen',Z=9+C(t)*19,Z+598);x.fillRect(Y*C(t)*7,380,Y,Y)

Aug 30 2017 11:35 PM UTC

}// 140/140

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

Shoutz CGT!

u/cantelope

this deserves mad props. i don't know if it was accidental or intentional, but the effect is rad.
u/kchplr

The 90's are back, and they're pissed off.
u/Xen

MegaDrive gon kick yo ass!!!! saaaygaaaaaaah!
u/donbright

my screen says "CodeGolfTea", which sounds delivious

show FPS hide FPS share fullscreen

cantelope

function u(t) {

if(!t){w=1080;p=0.618;s=1.5708}with(x)lineWidth/=p,strokeRect(0,0,w,w),arc(w,w,w,s*2,s*3),stroke(),translate(w+w*p,0),rotate(s),scale(p,p)

Aug 21 2017 12:51 AM UTC

}// 138/140

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

best fullscreen. Couldn't have done it without the help of the dark knight, who prefers to remain anonymous. :)

u/donbright

yeahhhhh!!!!! cool
u/cantelope

there's an odd bug in chrome where if hardware acceleration is disabled, or the dweet appears far down the page, the arcs close their paths and create unwelcome diagonal lines. I have a more robust version but it does not fit in 140b.
u/katkip

#fibonacci

show FPS hide FPS share 1 remix fullscreen

artfarnaa

function u(t) {

 for (c.width|=a=200;--a;x.arc(960+S(G+t)*400,
 540+C(t+G*1)*400,a%2*137*Math.abs(S(t))*4,0,
 6.2832))x.moveTo(G=a/2|0,0)
 x.fill('evenodd')

Aug 8 2017 1:52 AM UTC

}// 140/140

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

Show more comments…
u/kchplr

Great !
u/sigveseb

Awesome!
u/ninerdelta

stupid question, but why c.width|=a=200? I was tinkering with this code and just made it a=200 and the fps drops significantly.
u/kchplr

ninerdelta: I think that the reason is that c.width|=something is not only clearing the canvas but also the 2d context. Without it each iterations keeps adding arcs to the current path, by the 10th frames there are 2000 arcs to redraw, by the 50th frames there are 10000, etc. In a, err, "non-cold golfing codebase" you could avoid this by using beginPath and closePath.
u/kchplr

"cold golfing", superb. I meant code golfing...
u/ninerdelta

ah that makes sense, thanks!
u/donbright

now this is fine work

show FPS hide FPS share 2 remixes fullscreen

artfarnaa

function u(t) {

 for (c.width|=a=12;--a;x.arc(960+S(G+t)*400,
 540+C(t+G*1)*400,a%2*137*Math.abs(S(t))*4,0,
 6.2832))x.moveTo(G=a/2|0,0)
 x.fill('evenodd')

Aug 8 2017 1:22 AM UTC

}// 139/140

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

u/donbright

great use of evenodd

dwitter.net | artfarnaa (12228)