Hot 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.

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Current theme challenge: #ScaryMovies

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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

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

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

remix of d/16189 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.pop()]*r()>.5)u[q]=s.push(q-1,q+1,q+w,q-w)

Oct 19 2019 8:10 PM UTC

}// 138/140

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reading the end of the queue makes it a random walk instead

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joe.m

remix of d/16063 by u/joe.m

function u(t) {

t?l=v=m=n=0:0
M=[0,1,1,0]
for(i=1e3;i--;){v=4*Math.random()|0
q=(v+1)%4
if(l!=q)x.fillRect(1e3*(m=m+(M[l=v]-m)/2),1e3*(n=n+(M[q]-n)/2),1,1)}

Oct 13 2019 7:21 PM UTC

}// 140/140

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saved a byte or two to add a more comples rule #chaos

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joe.m

function u(t) {

t?l=v=m=n=0:0
M=[0,1,1,0]
for(i=1e3;i--;){while(l==v)v=4*Math.random()|0
x.fillRect(1e3*(m=m+(M[l=v]-m)/2),1e3*(n=n+(M[(v+1)%4]-n)/2),1,1)}

Oct 13 2019 3:33 PM UTC

}// 139/140

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#chaos game

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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

remix of d/16018 by u/joe.m

function u(t) {

if(!t){r=-1,d=20}
r++
n=0
for(i=r/2|0;i>1;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 9:41 AM UTC

}// 116/140

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now with #primes #waitforit

u/donbright

interesting
u/donbright

#underrated

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joe.m

function u(t) {

if(!t)x.fillRect(0,0,1920,1080)
x.globalCompositeOperation='xor'
r=frame/2
x.fillRect(960+r*C(r),540+r*S(r),4,4)

Oct 11 2019 9:12 AM UTC

}// 112/140

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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

dwitter.net | joe.m (85)