Dweets awesomed by u/Qwitter

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: #Food

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Qwitter

function u(t) {

a=530;m=t%28;c.width=2e3;x.beginPath();for(i=1;i<m+1;i++){p=3*t+i*6.28/m;x.lineTo(a*(2+C(p)),a*(1+S(p)))}with(x)closePath(),fill(stroke())

Jan 21 2018 5:00 PM UTC

}// 138/140

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For some reason my phone does not require the x.beginPath(); command. (?)

u/sigveseb

afaik you don't need beginPath at all, since setting the width of a canvas resets it completely, including the current path
u/Qwitter

Thank you for your answer. It does work the same w/o beginPath on the phone's Safari browser, and i was able to get a little color with x.fillStyle=R(p);. However, it just makes a way to many verticied jumbled circular shape w/o it on the edge explorer (its a bad habit) on my computer. Another major difference I have seen between the phone andthe computer is in the results of using the 'HSVA' color coordinates, sometimes they look vastly different, but im not sure under what conditions that happens. Probably not worth investigating, but I'll note them here to spread some awareness.
u/Qwitter

*HSLA
u/Xen

part way between square and pentagon it gives a cube optical illusion ;)

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BirdsTweetCodersDweet

remix of d/6288 by u/augitesoul

function u(t) {

for(i=0;i<100;i++)x.fillStyle=`hsl(${t*T(i)},50%,50%)`;x.fillText('Test', 21*S(t),(2%S(t*t))*t+540,1e3);x.font=(200+'px C');

Jan 21 2018 4:54 PM UTC

}// 124/140

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How about this? ~9 chars shorter, and it has rainbows, too!

u/Xen

or d/6307 , 28bytes shorter again and cleaned a bit! ;-)

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nickd3000

function u(t) {

m=150,n=v=>m*((S(5+i*t)*15)&v);for(i=0;i<30;i++){x.fillStyle=R(n(8),n(2),n(4)),x.fillRect(0,i*40,2e3,40)};x.fillRect(m,m,1600,810);

Jan 21 2018 4:06 PM UTC

}// 133/140

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u/nickd3000

PRESS PLAY ON TAPE
u/BirdsTweetCodersDweet

Jesus... seizure warning, people! :D
u/iverjo

C64!
u/joeytwiddle

More than you ever wanted to know about C64 loading bars: https://www.youtube.com/watch?v=I0YmJluYb6Q

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Qwitter

function u(t) {

l=20;c.width=1920;for(p=-2;p<3;p++){for(j=0;j<99;j++){x.beginPath();k=j%2;x.arc(810+p*240*S(t/4)+l*k,540,j*l,3.14*k,3.14*(k+1)),x.stroke()}}

Jan 21 2018 3:12 PM UTC

}// 140/140

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veubeke

function u(t) {

c.width^=0
x.globalCompositeOperation='xor'
for(i=T=300;i--;x.fill())x.beginPath(),x.arc(960+C(_=i/3.18+t)*S(t)*T,540+S(_)*C(t)*T,T,0,6.28)

Jan 21 2018 2:35 PM UTC

}// 139/140

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u/iverjo

Nice donut
u/joeytwiddle

That donut is doing my nut

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Qwitter

function u(t) {

b=225;for(i=200;i--;x.fillRect(0,i*9,9,9))x.fillStyle=R(9*i*t%b,0,99+b*i*i*t%156)
x.drawImage(c,9,S(t)*4+2*C(3*t))
x.fillRect(0,0,2e3,9)

Jan 21 2018 9:19 AM UTC

}// 137/140

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<svg width= "40" height = "40"><path d =" M0 0 L40 40" stroke = "black" /></svg>

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jonathan_b

remix of d/6279 by u/jonathan_b

function u(t) {

for(c.width|=s=i=504;i-=3;x.beginPath())q=S(i)*C(t+i),x.arc(s+s*3*q,s+s/2*S(i),i,0,7),x.lineWidth=i,x.strokeStyle=R(i/q,q*s,i/2),x.stroke()

Jan 21 2018 8:45 AM UTC

}// 139/140

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u/Qwitter

Love this !
u/jonathan_b

thanks!
u/Qwitter

This deserves a couple Dwitcoins: <svg height="40" width="40"><circle cx="10" cy="15" r="9" stroke="#999900" stroke-width="2" fill="#bfbf22" /><text x="7" y="20" fill="#cfcf00">$</text><text x="5" y="20" fill="#eeee00">D</text></svg> <svg height="40" width="40"><circle cx="10" cy="15" r="9" stroke="#999900" stroke-width="2" fill="#bfbf22" /><text x="7" y="20" fill="#cfcf00">$</text><text x="5" y="20" fill="#eeee00">D</text></svg>
u/joeytwiddle

#colors

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Qwitter

function u(t) {

f=t*99;with(x)strokeStyle=`HSLA(${f},100%,50%,.3)`,beginPath(stroke()),arc(900+T(f)*9,99,f%75,0,7),drawImage(c,12*C(t),9+4*S(S(5*t)))

Jan 21 2018 8:36 AM UTC

}// 133/140

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Qwitter

function u(t) {

f=t*99;with(x)strokeStyle=`HSLA(${f+160},100%,50%,.3)`,beginPath(fill(stroke())),arc(900,500,9,0,7),drawImage(c,9*C(3*t),9*S(5*t)+3*T(t/33))

Jan 21 2018 8:21 AM UTC

}// 140/140

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Punky

function u(t) {

for(i=1;i<4e3;i++){b=2*t+i;o=b/(S(b+5)*126)%256;z=o/3;x.fillStyle=R(z,o,o);x.fillRect(960+((i/60)%1)*S(b)*2e3,2e3+800*C(t)-i*16%3e3,40,3);}

Jan 21 2018 7:36 AM UTC

}// 139/140

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Based on u/sadropol's Christmas tree. https://www.dwitter.net/d/3748

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