Dweets by u/robotman_

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: #Opposites

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robotman_

function u(t) {

for(i=d=0;i<1920;i++)x.fillRect(i,540+(d+=Math.random()-.5)*10,1,1)

Dec 7 2021 11:36 PM UTC

}// 67/140

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Random Walks

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robotman_

function u(t) {

for(c.width^=i=0;i<44*15;i++)x.fillRect(960+S(a=i+t*((f=0|(i/44))%2==(0|(t/4))%2?1:-1))*(r=80*f+20*(t%4)),540+C(a)*r,w=9+f,w)

Sep 6 2021 8:57 AM UTC

}// 125/140

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Hypnotizing circles

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robotman_

remix of d/23747 by u/robotman_

function u(t) {

for(i=0;i<942;i++)x.fillStyle=`hsl(${30+i/3},99%,50%`,x.fillRect(960+S(t+i*i/314)*(r=150+(0|(i/314))*150),540+C(t+i)*r,1,1)

Sep 5 2021 9:07 AM UTC

}// 123/140

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Now with color!

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robotman_

function u(t) {

for(i=0;i<942;i++)x.fillRect(960+S(t+i*i/314)*(r=150+(0|(i/314))*150),540+C(t+i)*r,1,1)

Sep 5 2021 8:56 AM UTC

}// 87/140

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Nice Squares

u/robotman_

Not sure what happened, but I like it

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robotman_

function u(t) {

c.width^=0
for(j=0;j<6;j++)for(i=0;i<63;i++)x.fillRect((k=200*S(t/1.7))*S(u=j*1.047)+960+S(t+i)*(r=175+S(t)*50),k*C(u)+540+C(t+i)*r,9,9)

May 25 2021 8:56 PM UTC

}// 136/140

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Flower Power

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robotman_

function u(t) {

for(c.width^=i=0;i<6;i++)for(j=0;j<20+5*i;j++)x.fillRect(960+C(a=(r=t+j/(7+i)+i)+S(i+r/2))*(w=100+70*i),540+S(a)*w,9,9)

Mar 26 2021 3:24 PM UTC

}// 119/140

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Inspired by https://traffic-simulation.de/ring.html

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robotman_

function u(t) {

c.width^=0
for(j=0;j<6;j++)for(i=0;i<63;i++)x.fillRect(300*S(u=j*1.047)+960+S(t+i)*(r=150+S(t)*50),300*C(u)+540+C(t+i)*r,9,9)

Mar 18 2021 1:39 PM UTC

}// 125/140

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Fun with circles

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robotman_

function u(t) {

c.width^=0
for(j=1;j<5;j++)for(i=0;i<63;i++)x.fillStyle=`hsl(${i*5},99%,50%`,x.fillRect(960+S(S(t+j)+i/10)*400/j,540+C(j*t+i/10)*400/j,9,9)

Jan 5 2020 8:01 PM UTC

}// 139/140

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Crazy Rainbow Ring Rotations

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robotman_

function u(t) {

c.width^=0
for(i=0;i<314;i++)x.fillStyle=`hsl(${i},99%,50%`,x.fillRect(960+S(u=t-i/50)*(a=400+50*S(t*3+i)),540+C(u)*a,15,15)

Jan 5 2020 7:30 PM UTC

}// 124/140

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Circular Spiral (I don't know what happened)

u/pavel

http://mathworld.wolfram.com/Torus.html
u/pavel

Look at the parametric equations

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robotman_

function u(t) {

c.width^=0
for(i=0;i<50;i++)for(j=-4;j<4;j++)x.fillRect(960+S(u=t-i/8)*(a=400+50*S(t*3+i)+j*30)+j*100,540+C(u)*a,8,8)

Oct 30 2019 8:46 PM UTC

}// 117/140

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Wobble tube

dwitter.net | robotman_ (74)