Top dweets by u/joe.m

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: #ScaryMovies

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joe.m

remix of d/15836 by u/joe.m

function u(t) {

t?0:q=j=4900,d=[-1,99,1,-99]
x.globalCompositeOperation='xor'
j+=u[q]?-1:1
u[q]^=1
q+=d[j%4]%9801
x.fillRect(19*(q/99|0),10*(q%99),18,8)

Sep 28 2019 2:08 PM UTC

}// 136/140

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langton's ant. Chaos becomes order after about 10k iterations, wait for it...

u/joe.m

#emergent #automata
u/KilledByAPixel

Welcome to the #ant club!
u/Xen

nice!

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joe.m

remix of d/15861 by u/joe.m

function u(t) {

if(!t){for(i=n=2601;i--;u[i]=1)q=1;j=q*q}
if(u[q-1]&j<n){u[j-1]=0;x.fillRect(37*((j-1)%51),21*((j-1)/51|0),35,19);j+=q}else{q++;j=q*q}

Oct 1 2019 8:51 AM UTC

}// 134/140

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pavel, this one is for you #prime #sieve

u/pavel

nice 👍
u/username

#waitforit

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joe.m

function u(t) {

w=1920
f=12.57/w
t?0:y=[]
j=t*120+1
for(i=0;i<w;i++)
{
if(!t)y[i]=0
y[i]+=S(i*f*j)/j
x.fillRect(i, 520+400*y[i], 1, 1);
}

Sep 27 2019 2:59 PM UTC

}// 121/140

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ooh, you can keep state!

u/tomxor

#fourier
u/tomxor

Welcome to Dwitter! you can also use u instead of y to save the initialisation space, as you can use functions for their object properties.

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joe.m

remix of d/16167 by u/joe.m

function u(t) {

r=Math.random
!t||!s.length?s=[r()*1e6|0]:0
for(i=w=1e3;i--;x.fillRect(2*q/w,q%w,2,1))if(!u[q=s.shift()]*r()>.5)u[q]=s.push(q-1,q+1,q+w,q-w)

Oct 19 2019 8:00 PM UTC

}// 140/140

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black mould

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joe.m

remix of d/16019 by u/joe.m

function u(t) {

if(!t){r=1,d=100}
for(z=d;z--;){
r++
n=0
for(i=r**.5|0;i>1&&n==0;i--)if((r/i)==(r/i|0))n=1
if(!n) x.fillRect(960+r/d*C(r),540+r/d*S(r),4,4)}

Oct 11 2019 9:48 AM UTC

}// 140/140

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now with a (slightly) less rubbish #prime test

u/pavel

91 for(d=z=99;z--;i||x.fillRect(960+r/d*C(r),540+r/d*S(r),4,4))for(r=t&&r+1,i=r**.5|0;r%i--;);
u/katkip

u used 3blue1brown video

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joe.m

function u(t) {

w=60
t?s+=.03:s=0
s>66?c.width|=s=0:0
for(j=34;j-=2;)for(i=22;i-=2,r=C(j*s/i);)
x.fillRect((j-1)*w+.9*w*C(s)*r, (i-3)*w+.9*w*S(s)*r,2,2)

Oct 3 2019 1:30 PM UTC

}// 136/140

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a #rose by any other name would look as sweet

u/joe.m

inspired by https://www.dwitter.net/d/14905
u/13thptr

#epicycloid
u/13thptr

#epicycloids
u/13thptr

#epicycles
u/Xen

love it

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joe.m

function u(t) {

!t||!s.length?s=[Math.random()*1e6|0]:0
for(i=w=1e3;i--;)if(!u[q=s.shift()]*T(q/t)<0)u[q]=s.push(q-1,q+1,q+w,q-w),x.fillRect(2*q/w,q%w,2,1)

Oct 18 2019 9:26 PM UTC

}// 139/140

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not what I was trying to do but...

u/katkip

WOW
u/joeytwiddle

I dunno what's going on but this deserves more upvotes! #virus
u/Tekmap

Very interesting

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joe.m

function u(t) {

w=1920
c.width=w
f=6.28/w
for(i=0;i<w;i++)
{y=0
for(j=1;j<=Math.abs(((20*t)%40)-20);j+=2) y+=S(i*f*j)/j
x.fillRect(i, 520+520*y, 10, 10);}

Sep 27 2019 1:09 PM UTC

}// 138/140

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sum of even harmonics

u/tomxor

#fourier

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joe.m

function u(t) {

    c.width|=0
    for(i=9e3;i--;x.fillRect(960+400*S(i*C(t)),540+400*C(i*S(t)),3,3))x.fillStyle=R(0,1/(i%100+1))

Dec 20 2023 1:56 PM UTC

}// 114/140

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glitch-assjou figures?

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joe.m

function u(t) {

w=540;p=.0175;n=[6,2],d=[71,29]
if(!t)k=i=0
if(k>600)c.width|=k=0,i++
z=p*d[i%2]*k++
r=S(n[i%2]*z)*w
x.lineTo(w+r*S(z),w+r*C(z))
x.stroke()

Oct 3 2019 8:26 PM UTC

}// 139/140

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not quite a maurer #rose

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