Dwitter - javascript demos in 140 characters

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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AJK

function u(t) {

a=t/99;s=128;r=(f,s,p=1)=>s*(f(t*p)+1);x.fillStyle=R(r(S,s),r(C,s),s);x.drawImage(c,r(T,540),r(C,270,a));x.fillRect(r(S,896,a),r(S,476),s,s)

Feb 24 2017 10:36 AM UTC

}// 140/140

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u/JakeSteam

It didn't even start off making sense, and got more chaotic from there!

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jackanakanory

remix of d/967 by u/robot0001

function u(t) {

t||(s=9,w=1920,h=9);
c.width=w;
x.translate(w/2,540);
t*=.05;
for(i=0; i<4; i+=.0009) {
 x.fillRect(w*S(t+i), h*T(t*i), s,s);
 x.rotate(4)
}

Feb 23 2017 10:30 AM UTC

}// 140/140

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lupigi

function u(t) {

a=1920;b=1080;if(t%6<1)x.clearRect(0,0,a,b);else{h=Math.random()*a;v=Math.random()*b;x.fillStyle=R(h*.13,v*.237,t);x.fillRect(h,v,100,100)}

Feb 24 2017 9:41 AM UTC

}// 139/140

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paberr

function u(t) {

c.width=200;k=9;s="d/1055/like";x.fillText("proof of concept "+s,k+S(t)*k,k); i=new Image();if(t==0)i.src='https://www.dwitter.net/'+s;

Feb 23 2017 7:36 PM UTC

}// 135/140

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u/Kalanchoe

oh, this is sneaky :)
u/lionleaf

Oh, oops. Didn't work on android chrome, if it works elsewhere I'll fix it. Thanks!

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SingingGoat

function u(t) {

c.width=1920;
for(i=0;i<192;i++){
x.fillRect(0+i*10, 0, 10, 1+1080*S(t+i))
x.fillRect(0+i*10, 1080, 10, 1-1080*S(t-i))
}

Feb 23 2017 1:39 AM UTC

}// 120/140

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demidrugo

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 */

Feb 25 2017 9:20 AM UTC

}// 122/140

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ssg

function u(t) {

x.fillStyle="#816";x.fillRect(0,0,1920,1080);x.font="1400px impact";
x.fillStyle="#fea";x.fillText("arteffect",S(t)*1920-1800,1200+C(t)*400)

Feb 22 2017 7:11 PM UTC

}// 140/140

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u/sigveseb

141 characters? :O
u/sigveseb

What, now it says 140. Must be a bug in dwitter o.O
u/ssg

@sigveseb yeah it says 141 to me too now :)
u/c64skate

probably caused by \r\n, typical :)

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paberr

function u(t) {

w=1920;h=1080;k=window;m=10;l=Math.random;x.fillRect(k.z=(((k.z||0)+(l()>.5?m:-m))%w+w)%w,k.y=(((k.y||0)+(l()>.5?m:-m))%h+h)%h,m,m)

Feb 23 2017 6:58 PM UTC

}// 131/140

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max

function u(t) {

var i=new Image();i.src="https://goo.gl/skWdJw";i.onload=()=>{var p=x.createPattern(i,'repeat');x.fillStyle=p;x.fillRect(0,0,1920,1080)}

Feb 23 2017 6:18 PM UTC

}// 136/140

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zenymay5

remix of d/1155 by u/zenymay5

function u(t) {

c.width=1920;
for(i=1;i<350;i++)for(j=1;j<8;j++){x.fillRect(420+250*C(i)*S(T(t/1.2)+j/i),420+200*S(i),10,12)}

Feb 24 2017 8:17 AM UTC

}// 109/140

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u/iverjo

#spinner