Random 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.

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Dyno

function u(t) {

c.width=1920;for(j=64;j--;)for(i=120;i--;)a=1+S(((i*1.07)&j)/20+t*8),x.fillStyle=R(0,0,0,a/2),x.fillRect(i<<4,j<<4,16,16);

Jul 20 2016 4:35 PM UTC

}// 122/140

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u/iverjo

Awesome! Do you think it is possible to create a tunnel with this texture?
u/Lazy1337

#texture
u/Lazy1337

#xor

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Xen

function u(t) {

for(Y=i=960;i--;x.fillRect(Y+C(i-i/7+t)*Y,540+S(t+i)*540,19,19))x.fillStyle=R(Z=i/4,t*9%Z,Z*S(t))

Sep 24 2018 6:59 PM UTC

}// 97/140

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have a play with the C() and S() in fillRect

u/prplz

love it
u/joeytwiddle

Nice changing #pattern

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f8f82804

remix of d/9542 by u/f8f82804

function u(t) {

z=256;for(i=z*z;i--;x.fillRect(i%z*4+448,j*4,4,4))b=t&1||(U=V=0),U+=i%z,V+=j=i/z%z|0,x.fillStyle=R(b?U>z?(U-=z,z):0:U,0,b?V>z?(V-=z,z):0:V)

Aug 30 2018 11:01 PM UTC

}// 139/140

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2D palette and approximation with 4 color #dithering; 1D error diffusion gives different patterns for vertical gradients (red channel) and horizonal (blue channel) #slow #waitforit

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katkip

remix of d/16132 by u/katkip

function u(t) {

if(!t)x.translate(q=960,540);x.fillStyle='#fff4';for(i=345;i--;c.style.background='#102')x.fillRect(S(i*i)*i*t,i*C(i*i)*t,5,5)

Oct 16 2019 12:21 PM UTC

}// 126/140

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Big bang #space

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eviltoad

remix of d/4993 by u/eviltoad

function u(t) {

for(var i=0;i<1900;i++){
  x.fillStyle=R(255*C(t+i),255*S(i*2+t/2),S(i));
  x.fillRect(i,600+S(t/4+i)*500,5,5);x.rotate(.01)}

Jan 1 2018 10:40 AM UTC

}// 125/140

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Xen

remix of d/3513 by u/New_Core

function u(t) {

for(x.shadowBlur=i=99;i--;x.fillRect(960+i*i/3*S(t*i),500+i*i/3*C(t*i),b=i*4,b))x.shadowColor="#"+frame%1e3

Nov 13 2017 9:55 PM UTC

}// 107/140

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try chrome, FF slows

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lerc

remix of d/22653 by u/Xor

function u(t) {

for(c.width=i=h=960;i-->0;){
n=C(i+t);q=S(i/152)
n>0?0:x.fillRect((i*h/2-i*i)**.5*S(i+t)+h/2,i,n*n*9*q,9*(q**.3))
}

Apr 30 2021 7:02 AM UTC

}// 115/140

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Did some tweaks for changing size of rects for maybe some 3d effect

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jonsheller

function u(t) {

b=255;x.fillStyle=R(b,b,b,.1);x.fillRect(0,0,1920,1080);x.fillStyle=R()
for(i=0;i<99;i++)x.fillRect(i*20+S(t)*300,100*(5+5*C(.8*t+i)),9,9)

Dec 31 2017 8:35 PM UTC

}// 138/140

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dwardu

function u(t) {

c.width|=0
v=.8*C(t)
d=.3+.3*S(30*t)
x.beginPath()
x.moveTo(p=100+(100*t)%1720,q=540+440*S(t))
x.arc(p,q,100,v+d,v-d)
x.lineTo(p,q)
x.fill()

Feb 28 2018 2:16 PM UTC

}// 140/140

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rodrigo.siqueira

remix of d/34540 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert()sepia(.7)`
for(𝕏=X=Y=i=9e4;i--;𝕏=X,x.fillRect(Y*4e3+820,2650-X*4e3,t<.5,.1))
X=T(X*X-Y*Y*.3)%(9/t)+.3,Y=C(2*𝕏*Y+1.5)

Nov 20 2025 2:23 PM UTC

}// 140/140

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Sequential dots of light