Dweets awesomed 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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BriSeven

remix of d/18155 by u/BriSeven

function u(t) {

c.width*=1
for(i=64;i--;)x.setTransform(C(n=t+C(t)*i/40)*2,S(n),S(n)*2,C(n),950,400+i*5),x.font='5cm A',x.fillText([...'🏳️‍⚧️'][i%1],-60,40)

Dec 4 2021 3:35 AM UTC

}// 140/140

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heisentrans

u/BriSeven

Canvas seems to… inconsistently support this emoji.

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myro

function u(t) {

w=1080;c.width=w
for(r=0;r<w;r++){a=(r+t*60)%6.28
u=r*T(a**a)
v=r*1/S(a)
x.rotate(.003),x.fillText('o',u+w/2,v+w/4)}

Dec 1 2021 10:03 AM UTC

}// 116/140

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3D attractor?

u/Xen

nice!

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tomxor

remix of d/24387 by u/pavel

function u(t) {

s=R>15?16:(R|=0,X=R%4*8,Y=R/4<<3,b=32)
b&1?X+=b%4-2:Y+=b%4-1;b+=473545>>R/8%21&!(R++%8)
x.fillRect(450+s*X+s/.3,s*Y+s/.3,s,s)

Nov 28 2021 11:10 PM UTC

}// 125/140

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Smolr Pen Pattern v2

u/tomxor

Slower and no loops :)
u/pavel

Very nice golfing. Let's see if we can fit a bigger pattern in a dweet.

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stephanegeorget

function u(t) {

c.width=(m=27)*m
for(h=m*m;h--;)j=h%m,i=h/m,
x.fillStyle=R(0,i*9,j*9,.3),x.fillRect(m*j-(z=S(3*t+51*j+i)*12),m*i-z,q=m*S((i*i+j*j)**.4),q)

Nov 28 2021 11:04 PM UTC

}// 138/140

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Wavy pattern I copied from @sh_sys_ https://twitter.com/sh_sys_/status/146494850…

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tomxor

remix of d/24387 by u/pavel

function u(t) {

for(i=128;i--;x.fillRect(704+X-s*4.5,Y+s*3.5,s,s))s=t?16:(X=i%4<<8,Y=i/4<<8,b=32),b&1?X+=b%4-2:Y+=b%4-1;b+=468199>>t*60%21&1

Nov 28 2021 6:23 PM UTC

}// 124/140

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Smolr Fastr Pen Pattern

Show more comments…
u/tomxor

... but less satisfying
u/cantelope

first time, ever, i've seen an improvement on any of pavel's designs :)
u/tomxor

True, Pavel's dweets are pretty tight. Usually the most I can hope for is -1 char :P
u/tomxor

d/24387 restored the slow draw, and removed the for loop for only +1 char
u/tomxor

Sorely missing an edit button: I mean d/24396
u/vain

amazing code and algo!

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taupelink

remix of d/24339 by u/taupelink

function u(t) {

for(m=t?0:1e4;X=1+S(m),Y=6*S(m*m--);x.fillRect(960*X,90*(6+Y),q,-i/8))i=m%256,x.fillStyle=R(q=i*(1-C(Y>0?m:Y)),q*=.5+X/4,i-=q*Y,.5/(8-Y))

Nov 28 2021 4:20 PM UTC

}// 137/140

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d/24392

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pavel

function u(t) {

for(s=i=16<<!t;i--;x.fillRect(t?X+=C(a=b/.63662):(b=X=576,Y=138,608+i%4*224),t?Y+=S(a):186+(i>>2)*224,s,s))f=frame/7%21
b+=1282675>>f&!(f%1)

Nov 26 2021 8:38 PM UTC

}// 140/140

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Pen Pattern

Show more comments…
u/pavel

Source: https://www.reddit.com/r/oddlysatisfying/com…
u/pavel

1282675 encodes the 'turn right' or 'straight' orders in binary, >>f&!(f%1) checks them on frames when f is an integer.
u/tomxor

Satisfying, looks like a recursive "Bowen Knot"
u/leafyvez

so beautiful
u/rep_movsd

This looks like the traditional "kolam" that Indians traditionally draw in front of the house
u/rep_movsd

Changing that 1282675 makes different patterns
u/leafyvez

u/rep_movsd exactly my thoughts!
u/magna

Awesome!
u/tomxor

-1 b+=468199
u/tomxor

(0b1110010010011100111)
u/tomxor

Oops, you have to flip X and shift it a bit, then it's -1
u/pavel

If you start with 0 and simultaneously replace 0 with 1 and 1 with 001 you will generate this sequence and bigger ones.
u/pavel

Similarly, if you start with 1s and replace s with s1s00s1s and ignore s when drawing.
u/pavel

I invented the second method. The first one I found by putting my hand-made small sequence into https://oeis.org .
u/CalSch

It's the command key but more complex

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leafyvez

function u(t) {

c.width|=w=500
for(i=3e3;i--;x.fillRect(2*w+i*(S(i-t)+2*S(2*(i-t)))/z,w+i*(C(i)-2*C(2*i))/z,10,10))z=S(i)-17,x.globalAlpha=S(3e4/i)

Nov 20 2021 9:53 AM UTC

}// 131/140

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spiraly trefoil variation

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pavel

function u(t) {

for(i=5e3,t||x.fillRect(0,0,i,i);i--;x.clearRect(960+s*X,540+s*(i&1?Y:-Y),3,3))X=2*(60*t%15-7)+C(a=i/7),Y=(4*t<<1)+S(a),s=500/(X*X+Y*Y)

Nov 18 2021 1:07 AM UTC

}// 135/140

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Round and round

u/donbright

awesome
u/donbright

#circlepacking

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taupelink

remix of d/24339 by u/taupelink

function u(t) {

for(m=t?0:1e4;X=1+S(m),Y=9*S(m*m--);x.fillRect(960*X,80*(9-Y),q/2,-2*i))x.fillStyle=R(i=m%256,q=i/(1+C(Y>0?X-X*X/4:Y*Y/8)/2),q*=1+Y,.03/Y/Y)

Nov 15 2021 10:44 PM UTC

}// 140/140

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d/24345

u/rep_movsd

This is like Jaipur "The pink city" - Desert and Sandstone. See if you can get wider buildings - you could sell this on a Tshirt
u/Xen

nice!
u/taupelink

wider buildings, t-shirt: ok! https://society6.com/product/taupe-skyline_t…
u/pavel

Nice vibes

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