New dweets | Dwitter

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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decagon

function u(t) {

c.width=1920 
for(i=0;i<100-(t*1);i++) {
x.fillRect((i*4.1*C(S(C(S(t))))+T(t**100)-t*2)*5,-400,5,8+i*15) // draw 50x200 rects
}

Feb 21 2018 3:52 AM UTC

}// 127/140

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A lonely triangle. All it can do is try its best, before it slowly withers away.

u/iverjo

Social commentary? ^^

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Xen

remix of d/7024 by u/DirtyDan

function u(t) {

with(x)for(i=199;i--;lineWidth=i/9,beginPath(arc(960+C(a=i-t/9)*(d=i*9*S(t/5)),540+S(a)*d,i,0,7),stroke()))strokeStyle=`hsl(${i*t},99%,39%)`

Feb 21 2018 12:50 AM UTC

}// 140/140

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Shoutz 2 DirtyDan

u/DirtyDan

:D
u/katkip

#xweet

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DirtyDan

remix of d/7021 by u/DirtyDan

function u(t) {

with(x)for(i=82;i-->1;lineWidth=9,strokeStyle="#FFF")beginPath(arc(960+C(a=t*i/9)*(d=i*9*S(t)),540+S(a)*d,i*3,0,7),fill(stroke()))

Feb 21 2018 12:01 AM UTC

}// 130/140

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u/akm

nice!

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hix

function u(t) {

c.width|=0;x.globalCompositeOperation="xor";w=512;d=8;x.translate(960,540);for(i=16;i--;x.fillRect(-w/2,-w/2,w,w))w+=d*C(t),x.rotate(S(t)/i)

Feb 20 2018 11:51 PM UTC

}// 140/140

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triclops200

function u(t) {

w=1920;c.width=w;m=150
for(i=0;i<m;i++){k=C(t*2+i/50)*255
x.fillStyle=R(255-k/2,0,k)
x.fillRect(i/m*w,w/3.6+100*S(i/10+t/2),10,150*C(i+t))}

Feb 20 2018 11:11 PM UTC

}// 139/140

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u/BirdsTweetCodersDweet

Golfed-ish... Maybe learn some new techniques fromit IDEK, https://www.dwitter.net/d/7041
u/BirdsTweetCodersDweet

See the link in the comments of that one as well. Shortened it some more.
u/triclops200

The first one had golf that kept the output the same, but the second has output changes (the /3.6, for example, was there to approximate center of screen y), otherwise, good golf
u/snydej

Note that "540" is shorter than "w/3.6" ;)

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DirtyDan

remix of d/7010 by u/DirtyDan

function u(t) {

with(x)for(strokeStyle="#FFF",i=4;i++<44;lineWidth=44)beginPath(arc(960+S(a=t*i/11)*(d=i*t*S(t)),540+C(a)*d,i*3,0,7),fill(stroke()))

Feb 20 2018 11:09 PM UTC

}// 132/140

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Thanks to u/akm for shortening d/7010!

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marc8

function u(t) {

c.width|=0
s=50;v=t*4
x.font="60px A"
for(i=0;i<t;i++){
x.arc(1000-v*(t-i),540,s*(t-i),0,7)
x.stroke()}x.fillText("Mach "+v/s,1630,560)

Feb 20 2018 9:10 PM UTC

}// 135/140

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The physics dweets: supersonic motion

u/aleamb

awesome!
u/magna

DOPE!
u/joeytwiddle

#physics
u/Purpzie

Goodness gracious this is cool.

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jellyedwards

function u(t) {

c.width=w=600;for(s=j=80;j<330;j+=4){x.beginPath();for(h=i=200;i;i-=5){d=(i-w/6)/38;x.lineTo(h+i,j-(s/=.9)%w/t*Math.exp(-d*d))}x.stroke()}

Feb 20 2018 8:48 PM UTC

}// 138/140

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unknown pleasures

u/joeytwiddle

Nice! Dwitter album covert art d/2108
u/jellyedwards

@joeytwiddle yours looks much more like it! I had a few other versions with fBm and fill etc. but couldn't get them under 140 chars!

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BuRRak

function u(t) {

onkeydown=u=>c[(e=u.key.toLowerCase())]=(c[e]|0)+(u.shiftKey?-1:1);c.style.background=R(c.r,c.g,c.b);throw c.r+';'+c.g+';'+c.b;

Feb 20 2018 5:40 PM UTC

}// 127/140

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Color Preview - use R, G, B to increase the RGB values and shift + R,G,B to decrease them

u/akm

golfed it down to 99 chars: with(c){onkeydown=u=>[e=u.code[3]]=e+u.shiftKey?-1:1,style.background=R(r,g,b);throw r+';'+g+';'+b}
u/BuRRak

Oh wow, you won't stop amazing me! :)
u/joeytwiddle

Useful! :)
u/BirdsTweetCodersDweet

onkeydown=u=>c[(e=u.key.toLowerCase())]=(c[e]|0)+(u.shiftKey?-1:1);c.style.background=R(a=c.r%255,b=c.g%255,d=c.b%255);throw a+';'+b+';'+d; fixed your throws ;)
u/BirdsTweetCodersDweet

Or. with akm's modifications: with(c){onkeydown=u=>[e=u.code[3]]=e+u.shiftKey?-1:1,style.background=R(a=r%255,d=g%255,e=b%255);throw a+';'+d+';'+e}

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Agnes

function u(t) {

with(x)fillStyle='red',fillRect(960+t*S(t**2),540+t*C(t**2),9,9),filter=`hue-rotate(9deg)opacity(40%)`,drawImage(c,-10,-10,1940,1100)

Feb 20 2018 12:27 PM UTC

}// 133/140

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u/aleamb

nice, disturbing!
u/geb

#background