Dweets awesomed by u/anotherkitten

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: #Food

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metamero

function u(t) {

eval(unescape(escape`景爨稽㜲Ᵽ⹷楤瑨簽欽〻欼㈵㔻欫⬩漽⡲ⱳⱡ⤽㹸⹲散琨爬猬愬愩Ⱪ㵫☱㔬樽款㸴ⱪ☽ㄵⱰ㴴㈰⭺⩩ⱱ㵺⩪Ⱪ㰱㔿⠨椫権┲㼰㩯⡰ⱱⱺ⤬漨瀫⡫┲㼴㠺㐩ⱱ⬨欦㈿㐸㨴⤬㈰⤩㨰㭸⹦楬氨❥癥湯摤✩`.replace(/u(..)/g,"$1%")))

Nov 30 2018 5:59 PM UTC

}// 134/140

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#OpticalIllusion

u/katkip

#illusion cool
u/metamero

for(z=72,c.width|=k=0;k<255;k++)o=(r,s,a)=>x.rect(r,s,a,a),i=k&15,j=k>>4,j&=15,p=420+z*i,q=z*j,i<15?((i+j)%2?0:o(p,q,z),o(p+(k%2?48:4),q+(k&2?48:4),20)):0;x.fill('evenodd')
u/ceaga

kanji chester!

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jylikangas

function u(t) {

t?i=t*9|0:c.width=-1
r=i<10?C(4/i)*89:i
x.fillStyle=R(r*7,r*3,y=i*9)
x[f='fillRect'](150-r,y,r*2,i-11)
x[f](y-99,i&&98,s=i?-9:1e3,s-y*y%49)

Nov 30 2018 4:12 PM UTC

}// 139/140

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We built this city on synthwave

u/magna

Whoa!
u/aleamb

wow!!!
u/aleamb

#city #landscape #stylish #eighties
u/aleamb

#waitforit
u/katkip

Awesome

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anotherkitten

function u(t) {

if(t<14)for(t*=5,i=7;--i;z=C(t*.99)*499+499,x.fill(p=new Path2D,p.arc(960+C(t+i)*z,540+S(t+i)*z,60,0,7)))x.fillStyle=`hsl(${i*60},99%,${t}%`

Nov 29 2018 8:46 PM UTC

}// 140/140

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woven mess

u/katkip

#symmetry

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anotherkitten

function u(t) {

t=t-->1?t*19:.01;c.width|=0;for(i=99;i--;x.fillRect(b=t**.8*i,1e3+(t*29-t*t/1.5)*(-2/b**.1),80,80))x.fillStyle=`hsl(${50-t} 90% ${70-t}%`

Nov 29 2018 8:20 PM UTC

}// 137/140

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crate explodes?

u/katkip

Doesn
u/katkip

Doesn't work for me*

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anotherkitten

remix of d/11195 by u/anotherkitten

function u(t) {

if(!t)b=Array(c=1e6).fill(-1),a=i=0,m=Math.PI;if(a<c)b[a]=1,a+=d=a-++i<0?i:b[a-i]*i,x.arc(a-d/2,540,i/2,g=m*(i&1),g+m),x.stroke()

Nov 29 2018 3:29 PM UTC

}// 129/140

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recaman's sequence over time

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pavel

function u(t) {

for(i=c.width|=0;j=i-->>5;x.arc(98*(28-k*63+i%32*(4*k-2)+(j|t)%2+t%1/2+(.5-j%2)/(1+9e9**(j/9-t%1))),(j-k)*170,98,3*!k,3*k))k=i>>4&1
x.fill()

Nov 29 2018 12:18 AM UTC

}// 140/140

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MORE disks >:) #beesandbombs

u/anotherkitten

stop being so good
u/katkip

i love your beesandbombs dweets
u/pavel

I call fill just once, the black bits are a single connected shape that zig-zags, the messy edges are hidden offscreen.
u/pavel

I use 1/(1+9e9**x) to smooth step but even rows step twice in one cycle which is done by adding (j|t)%2 as offset.
u/pavel

In hindsight ~~x+(x%1)**9 is better for multi-smooth-step animations.

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anotherkitten

function u(t) {

if(!t){b=Array(c=7e3).fill(-1);for(a=i=0;a<c;x.arc(a-d/2,540,i/2,g=Math.PI*(i&1),g+Math.PI))b[a]=1,a+=d=a-++i<0?i:b[a-i]*i;x.stroke()}

Nov 28 2018 10:25 PM UTC

}// 134/140

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recaman's sequence (light)

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pavel

function u(t) {

for(k=c.width|=w=120;k--;x.rect(j*w+o(t),i*w+o(t-1.6),s=k%2?60:j+i&1&&w,s))i=k>>6,j=k/2&31,o=n=>k%2*w/(2+9e9**C(n-k/1e3))
x.fill('evenodd')

Nov 28 2018 8:17 PM UTC

}// 139/140

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Chessboard Stairs #beesandbombs (simplified)

Show more comments…
u/jylikangas

Another very clever implementation!
u/katkip

This game me a headache
u/katkip

This game me a headache. Nice
u/metamero

great dwitter! [as always] ... why this is so much slower on phone (android)?
u/metamero

great dwitter! [as always] ... why this is so much slower on phone (android)?
u/pavel

It is a bug in the website. I'll see if I can fix it.

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anotherkitten

function u(t) {

for(c.width|=i=384;i--;x.fillText(...k?['egg',700+C(t*99)*9,600+S(t*57)*9]:['🥚',C(i)*2e3,(i+t)*99%2e3-99]))x.font=(k=i==99)?"9cm A":"5cm A"

Nov 28 2018 8:01 PM UTC

}// 139/140

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u/veubeke

eggciting :D
u/lionleaf

#egg

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anotherkitten

function u(t) {

for(c.width|=i=40,v=S(t/3)*4+1;i--;)for(j=6,z=1.05;j--;)x.fill(p=new Path2D,p.arc(960,540,i*30,j*z+v/i**.4+t,j*z+z+v/i**.5+t))

Nov 28 2018 5:04 AM UTC

}// 126/140

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tendrils

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