Dweets by u/IV | 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.

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Current theme challenge: #ScaryMovies

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remix of d/676 by u/mxfh

function u(t) {

d=x.getImageData(0,0,w=c.width=256,h=c.height=128)
for(i=0;i<h;i++)for(j=0;j<w;j++)d.data[(i*w+j)*4+3]=(i*j%w)*t%w
x.putImageData(d,0,0)

Jul 22 2020 5:33 PM UTC

}// 137/140

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moire pattern = (i*j%w)*t%w original sierpinskies = (i-j&j+i)*t%w

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function u(t) {

s=20;w=48;h=27;c.width|=0
F=i=>(x.globalAlpha=C(i*t),x.fillRect((w+X)*s,(h+Y)*s,s,s))
for(X=-w;++X<w;)for(Y=-h;++Y<h;)u=X/w,v=Y/h,F(u*u+v*v)

Jul 21 2020 11:13 PM UTC

}// 140/140

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remix of d/2767 by u/jick

function u(t) {

g='globalCompositeOperation';
(T(t)<.5)?x[g]='xor':x[g]='copy'
r=Math.random;W=c.width;H=c.height;
x.fillRect(r()*W,y=r()*H,a=r()*W/6,a)

Jul 21 2020 10:00 PM UTC

}// 136/140

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#xor

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remix of d/15105 by u/rep_movsd

function u(t) {

for(w=c.width=300,j=i=1,q=65537,p=k=255;i++<w;j=j*75%q,k=k*75%q,x.globalAlpha=e=C(t+i*5),x.fillText('❄',e*75+w*j/q,(t*k/p+w*k/q)%w));

Jul 21 2020 4:21 AM UTC

}// 133/140

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#text

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remix of d/19463 by u/Billedluh

function u(t) {

x.font="30em'",x.fillRect(0,0,w=2e3,w),t*=2
for(i=1;i<5;i++)x.fillText('👻👻',100*t%w+500*C(t+5*i)-300,700+15*(7*S(t*i)))

Jul 21 2020 4:03 AM UTC

}// 119/140

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#text

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function u(t) {

w=c.width/8;h=c.height/2;
p=T(t+2)*99;P=T(t)*10;
x.fillStyle=R(p,p/3,p,.05);
x.font=w+"px Arial";x.fillText("    Hello Dwitter",P,h+P);

Jul 21 2020 2:45 AM UTC

}// 135/140

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Hello Dwitter

u/IV

#text

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function u(t) {

s=70;w=c.width/s;h=c.height/s;r=Math.random;
for(i=1e2;i--;){
x.fillStyle=R(128*r(),128*r(),255*r(),r());
x.fillRect(r()*w*s,r()*h*s,s,s);
}

Jul 21 2020 2:43 AM UTC

}// 140/140

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pixels

u/Billedluh

This is very impressionist
u/IV

now you mention it, Monet would call it colourful! Thanks for inspiring a theme :)

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function u(t) {

c.width=1920
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t*i)*300,50*i*2,50,200)

Jul 21 2020 2:25 AM UTC

}// 76/140

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noob

u/IV

#default

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