Dweets awesomed by u/PiggyClone205

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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quidnovum

remix of d/888 by u/jczimm

function u(t) {

c.width=1920;q=l=>1+S(l)*S(l)
for(i=0;i<300;i++)for(j=0;j<6;j++){x.fillRect(960+200*C(i)/q(i)*S(T(t/1.1)+j/i),540+200*S(i)*C(i)/q(i),10,10)}

Mar 2 2017 6:03 PM UTC

}// 140/140

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FireFly

function u(t) {

t || x.translate(960, 540)
for (i=40; i--; x.rotate(S(t)))
 x.fillStyle = 'hsla('+i*t+',90%,50%,'+1/t+')',
 x.fillRect(v=i*20, v, i*t, i*t)

Mar 1 2017 8:05 PM UTC

}// 139/140

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Colour mania

u/iverjo

Nice!
u/Woodmouth

Ohh, if you wait long enough it goes grey, but then if you wait even longer, it quite suddenly goes back to color, and then suddenly even more grey
u/joeytwiddle

After that it ends up resting on a kind of shiny brushed metal pattern. Amazing!
u/joeytwiddle

#shiny
u/joeytwiddle

#color #rainbow (sorry for spamming the comments)

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PeCaN

function u(t) {

 t>4.85?(x.font='4em A',x.fillText("ρɘ¢ɑη",-68,0)):t?(x.rotate(t),x.fillRect(S(t)*300,200,50*C(t),200)):x.translate(960,540)

Mar 1 2017 7:48 PM UTC

}// 124/140

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jaustin

function u(t) {

for(X=1;X++<100;){for(Y=1;Y++<100;){x.fillRect(X*10,Y*10,10,10),x.fillStyle=R(120+120*C(10*t+X/50),120-120*C(9*t+Y/40),C(t))}}

Feb 28 2017 7:07 PM UTC

}// 126/140

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u/iverjo

Plasma! :D

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sfz

remix of d/1479 by u/sfz

function u(t) {

c.width=w=2e3
d=new Date
t?!(d&9)&&o.push([d%w,0,0,d%9]):o=[]
o.map(a=>(x.font=a[3]+'em ø',x.fillText('❄',a[0],a[1]+=a[2]+=a[3]*a[3]/w)))

Feb 27 2017 11:03 PM UTC

}// 137/140

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Snowflakes with gravity acceleration and parallax

u/sfz

err, depth that is, small ones fall slower as if they're further away :P
u/joeytwiddle

#snow I think it's fair to call that parallax, just vertical

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PhocaZH

remix of d/1449 by u/PhocaZH

function u(t) {

e=t-2;p=150;M=Math;g=M.abs(e);y=400+-M.sqrt(1-M.pow(g-1,2))*p;a=-M.acos(1-g);x.fillStyle=R(g*p);x.fillRect((6+e)*p,y,6,(6+a)*p-y)

Feb 27 2017 6:51 PM UTC

}// 129/140

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u/donbright

best heart yet

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Jenky

function u(t) {

n=512;r=6.28;for(i=t;i<t+r;i+=r/30){z=i+t;a=-S(i);b=-C(i);x.fillStyle=R(C(z)*n,C(z+r/3)*n,C(z+4.18)*n);x.fillRect(960+S(t)*a*n,n+b*n,9,9)}

Feb 26 2017 8:17 AM UTC

}// 138/140

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Rainbow experiment without 'hsv()'

u/donbright

this is really nice
u/sfz

purdy

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SpecialAgent

function u(t) {

w=960,h=540,x.strokeStyle=R(255*T(t*t),255*S(t),255*C(t),0.03)
x.strokeRect(w+S(t)*w,h+C(t)*h,10,10)
x.drawImage(c,S(t),-C(t>>10),w*2,h*2)

Feb 25 2017 9:50 AM UTC

}// 138/140

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Just messing around

u/5Mixer

Nice, looks super smooth, like paint. I need to mess around with not clearing the screen more :)

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jprctr

function u(t) {

for (i=0;i<360;i++)
x.fillStyle=R(125+S(t*C(i))*125,125+C(t+i)*125,S(t+i)*255,0.25)
x.fillRect(960+S(t*C(i))*360,540+C(t+i)*360,12,12)

Feb 24 2017 8:59 PM UTC

}// 134/140

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u/donbright

nice color choices

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sigveseb

remix of d/271 by u/3bl3gamer

function u(t) {

W=c.width=255;for(i=9<<12;a=i&W,b=i>>8,n=b-45,m=a-99,i--;x.fillRect(a,b,A=1/(((t+a/n)%2)^b/n),A))n*=(B=(W*S(t*29+n/5)+m*m+n*n)/5e3)<1?C(B):1

Feb 24 2017 12:35 AM UTC

}// 140/140

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Based on some of 3b3lgamer's stuff (remix link got broken).

Show more comments…
u/donbright

dude you are the king,.. O M GOSH
u/Renaud___

Fantastic :S
u/lionleaf

Fixed the remix link for ya :)
u/nashcat

holy sh*t
u/Kalanchoe

H...how? This is so impressive.
u/magna

Needs more music.
u/xem

inhuman
u/donbright

still the one that blew my mind the most.
u/lionleaf

#wobble #wobbly #water #mirror #checkerboard #refraction #sphere
u/Xaotic

wtf
u/firegodjr

#raytracing #best
u/stiaje

#witchcraft
u/sigveseb

This one used to be fast, wonder why it is slow now?

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