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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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rodrigo.siqueira

remix of d/23638 by u/TGY

function u(t) {

with(x)for(translate(t?0:m=986,t?0:540),i=m;i--;fillRect(1/i,z-230,6e4/z,8))fillStyle=R(z=2e4/((i*6+t*50)%m),z*S(t/2),z*2),rotate(T-(T=i-t))

Aug 24 2021 1:59 PM UTC

}// 140/140

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Gravity Orbe

u/TGY

astonishing
u/sigveseb

wow, nice!

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TGY

remix of d/3143 by u/nystrand

function u(t) {

with(x)for(translate(t?0:m=883,t?0:540),i=m;i--;fillRect(-m,i+z,3e3,8+z/22))fillStyle=R(z=m/((i*i-t*9)%m),z*2,z*6,rotate(-T+(T=i+S(t/9))))

Aug 23 2021 10:57 PM UTC

}// 138/140

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Do you remember original spider-man opening titles?

u/magna

Very cool remix!
u/andrea270872

nice and geometric :)
u/sigveseb

sweet!

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pavel

function u(t) {

with(x)for(i=w=t?0:2e3,h=540;y=h*S(i*i--);beginPath(fill(rect(690,491,h,98))))ellipse(i,h+y,2,20,Math.atan2(y-(i-720)*(i-1200)/y,2*i-w),0,7)

Aug 19 2021 6:31 PM UTC

}// 140/140

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#magnet

u/tomxor

Perfect
u/danny@hille.dk

very nice indeed
u/tomxor

And considerate t?0:2e3 :D

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pavel

remix of d/23577 by u/rodrigo.siqueira

function u(t) {

I=new ImageData(c.width=w=297,w);for(i=2e5;j=i--/4;I.data[i]=T(Y/r|X/r-42*t)*9+7/r)X=~j%w/17+9,Y=j/5e3-5,r=(X*X+Y*Y)/w;x.putImageData(I,0,0)

Aug 17 2021 10:40 PM UTC

}// 140/140

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Inside

u/pavel

Really a remix of u/danny@hille.dk version from the comments

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taupelink

remix of d/23574 by u/taupelink

function u(t) {

for(i=q=k=99;--i;x.fillRect(k*q*X,630-i-q/Y,-q*q/v,k*i/Y/v))f=i*t,X=f*f%1,Y=X*f%2-1,x.fillStyle=R(q/=1+S(q*X),q=q%9*i,q-=i/Y,Y*Y/q*k),v=2**t

Aug 17 2021 5:46 PM UTC

}// 140/140

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d/23578

Show more comments…
u/danny@hille.dk

dang that's nice
u/magna

Holy...
u/pavel

I think these would do better if they showed up all at once. I tried to muck around but your q logic is hard to compress for(k=99,m=t?0:5e4;X=S(m),Y=S(m*m--);x.fillRect(k*q*X,630-i-q/Y,q*q*m/9e5,i/Y))i=m%k,x.fillStyle=R(q=k/(1+S(k*X)),q=q%9*i,q-Y*k,k*Y*Y/q)
u/pavel

Yours looks really nice if you wait for it to finish!
u/rodrigo.siqueira

This #cityscape #scene deserves to be printed and framed. #city
u/rep_movsd

This is the best one of your recent technique
u/magna

I would totally want this on my wall
u/UEZ

#expressionism
u/taupelink

Thank you everyone for the compliments! And for bearing with me as I try different alternatives. And especially to u/pavel and others who have helped with coding/golfing.
u/taupelink

In fact, I am building a shop at society6.com: https://society6.com/taupelink
u/taupelink

For u/rodrigo.siqueira u/magna and anyone else interested in this particular dweet, here's a framed canvas version: https://society6.com/product/shoreline-skyli…
u/magna

u/taupelink Got one! I'll print out and attach the source code on it as well.
u/taupelink

thank you so much--enjoy!

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rodrigo.siqueira

remix of d/23561 by u/rodrigo.siqueira

function u(t) {

for(Y=t/9-1,i=2e3;i--;x.fillRect(i,60*t,1,1))r=((X=i/540-1.8)*X+Y*Y-.5)/99,x.fillStyle=R(K=T(Y/r|X/r)*3+Math.random()*9,0,K/r/20)

Aug 16 2021 3:32 AM UTC

}// 129/140

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UV emissions from the Sierpinski sphere #sierpinski

u/rep_movsd

Sphere of doom
u/cantelope

#slowdraw

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rodrigo.siqueira

remix of d/23439 by u/rodrigo.siqueira

function u(t) {

for(Y=t/9-1,i=2e3;i--;x.fillRect(i,60*t,1,1))r=((X=i/540-1.8)*X+Y*Y)/99,x.fillStyle=`hsl(${K=T(Y/r|X/r)/9+Math.random()*9},5%,${300-K/r}%`

Aug 15 2021 6:18 PM UTC

}// 138/140

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Sierpinski vortex #sierpinski

u/danny@hille.dk

Looks pretty dope

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mxfh

remix of d/23551 by u/mxfh

function u(t) {

I=new ImageData(w=2048,w)
b=new Int32Array(I.data.buffer)
for(i=3e6;i--;b[i]=(i-Y&Y+i)*-t/i%i<<22)Y=i*w
x.putImageData(I,0,0)

Aug 15 2021 2:06 AM UTC

}// 125/140

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https://www.dwitter.net/d/23557 so with some space for setting up other buffer view, it speeds things up when treating rgba Uint8Clamped Array as single 32bit value

u/mxfh

wondering if we could store that buffer somwhere to do truly iterative fractal stuff
u/taupelink

trippy!

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tomxor

remix of d/23544 by u/pavel

function u(t) {

for(a=Math.abs,c.width&=i=4352;X=1-(T+i/32)%2,Y=--i/2e3;x.fillRect(X*r+64*T,Y*r+96-64*a(S(t)),T=a(2-t%4)+1,(i^i/64)/8&1))r=64/(--Y*Y+X*X+1)

Aug 13 2021 12:57 AM UTC

}// 139/140

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Smoother #Amiga #Ball

Show more comments…
u/tomxor

..But less authentic. Remaps the pixel positions rather than texture, which gives "free" antialiasing, with spare space to correct the spin.
u/pavel

Oh yeah, nice. This is definitely a better way of doing it. The other mapping has an incorrect center that I have to waste characters to correct.
u/pavel

-2 char using S(t%3.14) to bounce and inlining the single Math.abs call
u/danny@hille.dk

What a clever trick, using modulus pi of t, to only get the positive part of the sinus curve
u/danny@hille.dk

3.2 works fine, while 3 and 3.1 looks wrong
u/danny@hille.dk

test code: c.width|=0,x.fillRect(o=860,o-S(t*4%3.2)*o,200,200)

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pavel

remix of d/23537 by u/KilledByAPixel

function u(t) {

for(c.width&=i=4352;Y=i--/2e3;x.fillRect(94+C(t/3)*94+i%64,80-80*Math.abs(S(t))+i/64,2*X/C(r=X*X+--Y*Y)-6*t&1^2*Y/C(r)-6&1,r<1))X=i%64/32-1

Aug 11 2021 8:39 PM UTC

}// 139/140

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Boing

u/DaSpider

That brings back memories.
u/DaSpider

#Amiga bouncing ball
u/tomxor

Nice!
u/tomxor

-1 char X=i/32%2-1

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