Top dweets by u/pavel

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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pavel

remix of d/17175 by u/pavel

function u(t) {

for(i=c.width|=p=355/226;i--;x[i&5?'arc':'moveTo'](960,600-50*z,2e3/z,b=((i>>3)*2+S(i*p)-z)/8%4*p,b))z=2.5-2*t%1+(i>>7)+C(i*p)/2;x.fill()

Jan 17 2020 2:47 AM UTC

}// 137/140

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u/aleamb

amazing!
u/tomxor

ooh, toroidal chess?
u/katkip

#tunnel

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pavel

function u(t) {

for(c.width=480,x.rotate(X=Y=q=.785),r=6;r--;X+=f(0),Y+=f(2))R=1<<r,x.strokeRect(X+265-R,Y-74-R,2*R,2*R),f=n=>R*Math.atan(16*C(t+(n-r%2)*q))

Dec 23 2018 9:53 AM UTC

}// 140/140

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Squares #beesandbombs

u/katkip

So smooth!

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pavel

function u(t) {

with(x)for(k=n=j=255;j--;k=2,fill())for(beginPath(fillStyle=R(T=(t^k)%2*128,T,i=4));i--;)arc((j%9-t%1)*n+T,(j>>4)*n+T,64*k,a=(i-t%1)*11/7,a)

Nov 13 2018 2:29 AM UTC

}// 140/140

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u/yonatan

arc?!
u/anotherkitten

oh you sly dog very well done
u/pavel

:)
u/jylikangas

Very cool! You can save 3 bytes by removing the unnecessary %1 from t when calculating a and also doing <<7 instead of *128. If someone is wondering how this works using a+1 instead of a at the end may help. :)
u/katkip

#beesandbombs
u/pavel

Removing %1 at the end breaks the animation on my iPhone.

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pavel

function u(t) {

with(x)for(fillRect(i=-710,i,i*=-2,i);i--;clearRect(20+9*S(a=i+t),2,w=C(a),w>0))setTransform(16,0,0,16,960,540),rotate(i/226)

Dec 15 2020 11:04 PM UTC

}// 125/140

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Torus Study #1

u/magna

WOW!
u/vovanmozg

fantastic!

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pavel

function u(t) {

eval(unescape(escape`𩡯𬠨𪐽𨰮𭱩𩁴𪁼👦👮🐾𚀨𪐯𜰪𚡮𯀰𚐥𜰭𜐩𚠨𞐸𚰹𞀯𚀱𚰱𩐹𚠪𤰨𭀭𫠭𜰩𚐩𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𞐹𛀹𞐩𚑸𛡦𪑬𫁓𭁹𫁥👒𚁳👩𙐳𛁳𚰱🀼𝠩𛁸𛡳𩑴𥁲𨑮𬱦𫱲𫐨𬰭𜑼𜐬𨐽𛐮𝐬𛑳𙐲𛁾𬰦𜑼𯁡𛀹𝠰𛑦𚀱𚐫𩠨𜠩𛀵𝀰𛑦𚀱𚐯𜠭𩠨𜠩𛰲𚱦𚀳𚐩`.replace(/u../g,'')))

Jul 8 2019 2:13 AM UTC

}// 140/140

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Divide (https://www.reddit.com/r/perfectloops/commen…)

u/pavel

192 for(i=c.width|=f=n=>((i/3**n|0)%3-1)*(98+98/(1+1e9**S(t-n-3)));i--;x.fillRect(0,0,99,99))x.fillStyle=R(s=i%3,s+1<<6),x.setTransform(s-1|1,a=-.5,-s%2,~s&1||a,960-f(1)+f(2),540-f(1)/2-f(2)/2+f(3))
u/pavel

194**
u/aleamb

wow!
u/katkip

nice #compressed

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pavel

remix of d/9294 by u/cantelope

function u(t) {

for(i=w=c.width|=q=6.2832;i--;x.arc(960+S(p=(i>>1)*q/9-t)/Z*w,540+C(p)/Z*w,Z*Z,a=-t%q,a))Z=2+(i-1&-2)%98-8*t%2,i%98||x.beginPath(x.stroke())

Feb 6 2019 2:02 AM UTC

}// 140/140

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#uncompressed

u/cantelope

gotta hand it to you 👏
u/pavel

Playing it safe on the arc angle, modding it by 2pi just to avoid the bug on Safari.

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pavel

remix of d/10485 by u/joeytwiddle

function u(t) {

for(z=42;j=z-->>1;x.fillRect(960+S(k)*15-w/2,540+C(k)*15+w/2-r,w,2*r-w))k=7*t-j/2,x.fillStyle=`hsl(${15*k},33%,${7*j}%)`,r=50*j,w=r*(.5+z%2)

Oct 20 2018 8:43 PM UTC

}// 140/140

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Fixed the plus shape in the back and added color cycling

u/pavel

Check it out in fullscreen

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pavel

function u(t) {

for(i=c.width|=0;i--;x.fillRect(X,540+200*C(a),-150,7))X=i%960*2,x.fillStyle=`hsl(${q=X/8+60*t},69%,${42+32*S(a=(q/32%1+(i>960))/.32)}%`

Dec 4 2020 8:45 PM UTC

}// 136/140

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Ribbons

u/pavel

Dynamically swapping the draw order to get proper overlapping. Change i>960 to 1 or 0 to see how this works.
u/Qwitter

cool, and thanks!

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pavel

function u(t) {

for(let i=2e3,z=(i,j=6)=>j&&Math.max(z(i,j-1),(1/j-(i/540-1.8+C(j))**2-(t/3-1+C(j*j)/2)**2)**.5-S(j)/3||0);i--;)x.fillRect(i,t*180,1-z(i),3)

May 19 2020 5:17 AM UTC

}// 140/140

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#raytracing a baby alien?

u/katkip

kinda #cute
u/yonatan

looks like a teddybear to me
u/andrea270872

Wow! It has a really organic look to it
u/veubeke

If I look at it for longer than 5 seconds, it looks like it’s moving. 😱
u/KilledByAPixel

Congrats, I can see the family resemblance! 😂

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pavel

function u(t) {

for(c.width|=i=4;--i;x.arc(480*i+R-30*o,540,R>0?R:-R,0,7))o=2-(t+1.5-i)%3/3*4,R=15*o+60/o;t&1&&x.arc(0,540,1e4,0,7);x.fill`evenodd`

Jul 6 2019 3:54 AM UTC

}// 131/140

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Show more comments…
u/pavel

Based on https://www.reddit.com/r/loadingicon/comment…
u/joeytwiddle

That's a nice subreddit for inspiration
u/KilledByAPixel

👍
u/Xen

love it!
u/magna

Awesome!
u/katkip

wow!
u/aleamb

love it!
u/Joachim

#loading

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