Dweets awesomed by u/richev

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.

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Current theme challenge: #Opposites

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yonatan

function u(t) {

for(i=c.width|=0;i--;)x.fillRect(S(i+t)*(i<1500?i/3:99)+960,i/2,9,9)

Jan 4 2019 3:26 PM UTC

}// 68/140

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Happy New Year?

u/katkip

WOW AWESOME

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metamero

remix of d/11637 by u/metamero

function u(t) {

x.font='42px"'
t?i=a++%46:a=0
x.fillText('╲╱'[2*Math.random(onclick=reset)|0]+'',42*i,42*(a-i)/46)

Jan 4 2019 3:18 PM UTC

}// 99/140

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classic #maze : canvas version

u/metamero

d/11644 d/11640 d/11637 d/11633 collection of different implementations

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Undefined

remix of d/11634 by u/katkip

function u(t) {

t||x.translate(956,536);for(i=360;i--;x.fillStyle=`hsl(${C(frame/9)*T(i/9)*99&i} 99%50%)`)x.fillRect(i*4,0,5,5);x.rotate(.01)

Jan 4 2019 1:38 PM UTC

}// 125/140

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I love the & operator way too much lol

u/sigveseb

Trippy

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katkip

remix of d/11632 by u/Undefined

function u(t) {

t||x.translate(960,540);for(i=360;i--;x.fillStyle=`hsl(${C(frame/9)*S(i/9)*99*t} 99%50%)`)x.fillRect(i*4,0,4,9);x.rotate(.004)

Jan 4 2019 1:18 PM UTC

}// 126/140

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Undefined

remix of d/11625 by u/katkip

function u(t) {

t||x.translate(960,540);for(i=360;i--;x.fillStyle=`hsl(${frame&i} 99%50%)`)x.fillRect(i*6,9,9,9);x.rotate(C(t/15)/50+3.14)

Jan 4 2019 1:09 PM UTC

}// 122/140

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f8f82804

remix of d/9721 by u/f8f82804

function u(t) {

for(i=c.width^=0;i--;Z<1.6&&x.fillRect(960+800*X/Z,540+800*Y/Z,s=32*(1.6-Z),s)){ϕ=i/600;θ=i-t/5+ϕ*4.5;X=S(θ)*S(ϕ);Y=C(ϕ);Z=C(θ)*S(ϕ)+2;}

Jan 2 2019 7:32 PM UTC

}// 136/140

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#perspective #sphere #stripe

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New_Core

remix of d/11613 by u/New_Core

function u(t) {

x.drawImage(c,99,99,1731,891)
x.fillStyle='#0005'
x.fillRect(0,0,2e3,2e3)
for(i=21;i--;x.fillText("👽",i*91,380*S(t+i/9)+560))x.font="89px'"

Jan 2 2019 11:49 AM UTC

}// 139/140

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ellisk1

function u(t) {

r=t?r:Array(n=1250).fill(n);for(j=n;j-=2;x.fillRect(r[j]+=d*S(a=j%2**(t|0)+t+d),r[j-1]+=C(a)-2,w,w))x.fillStyle=R(w=j/n*200/t,d=3+(t>8)*t*t)

Jan 1 2019 9:48 PM UTC

}// 140/140

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Bonsai

u/katkip

finally something awesome
u/lionleaf

That's amazing! #bonsai #tree #organic #plant
u/DataMeta

Wow
u/hollo47

Impossible.

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JWinslow23

function u(t) {

x.fillStyle=!(i=t*60%320|0)&&R(c=Math.random()*256,c,c);"㌥崥交&啕䕥ꊤ*㍷䶢&ᅕ䔢ꉅ\nᅕ鴢깂*".charCodeAt(i/16)>>i%16&1&&x.fillRect(i%64*32,i>>6<<5,32,32)

Jan 1 2019 4:24 AM UTC

}// 139/140

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Ring in the New Year!

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keithclark

function u(t) {

for(x.fillRect(x.globalAlpha=.2,q=t%2,2e3,2e3),i=125;i--;x.clearRect(S(t|1)*760+S(i)*v+960,(q*q/2-C(i))*v+380,l=6-q*3,l))v=q*200-S(i*.2)*i*q

Dec 31 2018 9:44 PM UTC

}// 140/140

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New Year Fireworks

Show more comments…
u/13thptr

elegant :)
u/keithclark

change S(i*.2)*i*q for S(i*t>>4)*i*q for varying firework effects (2 chars over the limit tho)
u/katkip

haha i like the variation
u/JWinslow23

If q will only ever be 0 or 1 (t%2), couldn't this just be for(x.fillRect(x.globalAlpha=.2,q=t%2,2e3,2e3),i=125;i--;x.clearRect(S(t|1)*760+S(i)*v+960,(q/2-C(i))*v+380,l=6-q*3,l))v=q*200-S(i*.2)*i*q? That way, the variation also works.
u/keithclark

I opted for what I had because it held the initial shape in the sky for longer before gravity takes hold. Your version works and if you're happy to trade off the initial shape, you could also drop the \2 and save another 2 chars
u/keithclark

... also q can be any value between 0 and 1
u/JWinslow23

Ah, my mistake, I forgot about floats
u/lionleaf

Nice one! #nye #fireworks
u/iverjo

Beautiful!
u/vain

3... 2... 1... ignition... beautiful firework

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