Dweets awesomed by u/tomxor

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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tomxor

function u(t) {

for(w=c.width&=i=10368;X=--i%w,Y=i/w;x.fillRect(X+z*R,Y+z*T,Math.hypot(R=X/64-1-S(t),T=Y/64-.6-C(t/3))+!z/2,1))z=(w+X/3-Y/3^Y/3+X/3)%21>18

Jun 6 2023 5:58 PM UTC

}// 138/140

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#PCB #trace #bumpmap

u/tomxor

Getting on the bump train with a different method. This one displaces X and Y in proportion to distance from light source, which creates pixel gaps on one side (specular highlights), and overlapping pixels on the opposite (becoming shadows).
u/danny@hille.dk

wow thats chrisp!

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rodrigo.siqueira

remix of d/27925 by u/KilledByAPixel

function u(t) {

c.width=355
for(i=w=127;i--;)for(j=200;j--;)x.fillRect(i+114,j,1,((w*(C(a=Math.atan2(X=i/w-.5,Y=j/w-.8))/Y/6+t)^w*(S(X+Y)/Y/6))&w)/w*C(a/t))

Jun 6 2023 3:16 PM UTC

}// 140/140

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The Tunnel #tunnel

u/tomxor

For some reason this reminds me of those weird halfpipe levels on sonic2 on the megadrive https://youtu.be/8cr1rqVcIhA?t=484

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KilledByAPixel

remix of d/27866 by u/@noel

function u(t) {

for(c.width=i=w=255;i--;)for(j=142;j--;)x.fillRect(i,j,1,((w*(C(a=Math.atan2(X=2*i/w-1,Y=2*j/w-.6))/(d=(X*X+Y*Y)**.5)+t)^w*(S(a)/d+t))&w)/w)

Jun 6 2023 5:16 AM UTC

}// 140/140

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Projection Faster and Uncompressed

u/@noel

I love this one and I follow the logic, until the z & w performing. I know it's a bitwise AND operation on z and w, but I don't actually grasp it.
u/@noel

I mean on this one: x.fillRect(i, j, 1, (z & w) / w)
u/joeytwiddle

Here (z & w) / w is the height of the rectangle. If that height is less than 1, then the canvas anti-aliasing renders a grey pixel, instead of a black one.
u/@noel

Thanks u/joeytwiddle Now I think I get it. (z & w) ensures that the value of z remains within the range of the canvas width 'w', and the dividing by w normalizes the height value. Great trick!

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KilledByAPixel

function u(t) {

a='🚓🚕🚗🚒🚙🚑🚌 '
eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍩󟜭󜜻󚼫󪜼󜜳󞽦󫽮󭌽󙼸󩝭󘬧󚝦󫽲󚍪󟜲󝜻󪬭󛜻󚝦󪝬󫍓󭍹󫍥󟝒󚍺󟝩󚬱󜬰󛍺󚜬󩭩󫍬󤭥󨽴󚍪󚬹󞜬󮬬󬜽󪜿󜜹󞬳󩜳󛍱󛼲󚜬󩭩󫍬󥍥󮍴󚍛󛬮󛭡󧝛󚌨󭌫󪭼󜌩󚬪󝜫󪜩󙜸󯌰󧜬󚌱󝬰󚽩󚬪󝼥󜬹󞜩󚬨󪬭󭌥󜜩󛍺󛜳󜌩`.replace(/u../g,'')))

Jun 5 2023 3:46 PM UTC

}// 140/140

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Traffic 🚕🚓🚗🚙🚒🚑🚌

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rodrigo.siqueira

remix of d/27874 by u/danny@hille.dk

function u(t) {

w=c.width=128;for(i=1e4;i--;)x.fillStyle=R(x.fillRect(X=i%w,Y=i/w-5,Math.min(s=Math.hypot(i%2*30+X-80-S(t)*9,Y-40)/9,(X^Y+t*60)%7),s),Y/s)

Jun 3 2023 11:25 PM UTC

}// 138/140

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Diving deeper

u/danny@hille.dk

Hehehe-)
u/tomxor

I'm down with this

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danny@hille.dk

remix of d/21523 by u/danny@hille.dk

function u(t) {

w=c.width=128;for(i=1e4;i--;)x.fillRect(X=i%w,Y=i/w|0,Math.min(s=Math.hypot(X-64-
C(t)*40,Y-36-S(t*1.2)*28)/16,.4/((X^Y)%7)),s)

Jun 2 2023 9:45 PM UTC

}// 127/140

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bump mapping remix

u/Joachim

Really nice #lighting
u/@noel

Beautiful. I need to dig into this, to understand how this actually works.
u/rodrigo.siqueira

Wow! Replace X^Y with X|Y to generate Sierpinski triangles. Replace Math.min with Math.max for a more dramatic effect. Remove |0 for improved golfing (a minimal visible effect on top alignment). Replace "t*1.2" with "C(i+t)*6" for the "water effect".
u/jellyedwards

Wow that's amazing!!

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rodrigo.siqueira

remix of d/27866 by u/@noel

function u(t) {

for(w=j=241;j--;)for(i=y=j/w;i<w;i++)k=2*i/w-1,d=k*k+y*y,z=w*C(k)/d+t*w^(w*S(k)/d+t*w),x.fillStyle=R(z&w,0,9/d),x.fillRect(i*8-8,j*4.5,8,4)

Jun 1 2023 7:36 PM UTC

}// 139/140

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Rotating #tunnel

u/deobfuscate

A light to the dweetverse.
u/Joachim

u/@noel you're able to delete comments on beta.dwitter.net if you log in :)
u/@noel

u/Joachim Thanks. I didn't notice that I wasn't logged in.

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KilledByAPixel

remix of d/27857 by u/rodrigo.siqueira

function u(t) {

for(j=240*(t+1|0),i=5e3;t<3&&--i;x.clearRect(X,Y,t%1<.1,i))Y=S(k=T(i**t))+T(i+t)**2,x.fillRect(X=(Y<-S(k)?300:-300)*C(k)+2*j,Y=99*Y+j,.3,1)

May 31 2023 4:11 PM UTC

}// 139/140

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Pipes remix with lighting and occlusion

u/cantelope

nice
u/Xen

love it!, i gotta idea.
u/jdspugh

Amazing lighting

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joeytwiddle

remix of d/27534 by u/rodrigo.siqueira

function u(t) {

for(c.width|=c.style.filter='blur(4vh)invert(',i=3e3;i--;x.fillRect(960+T(p=T(i))/Z,540+C(p)/Z,K=30*T(t/9),K))Z=T(i*i)/(P=(i-S(t/9)*t)%9)**4

May 25 2023 8:05 PM UTC

}// 140/140

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Formation and dispersal (remix)

u/Xen

#FarTooSexy
u/rodrigo.siqueira

This is hypnotic and mesmerizing. I use fullscreen to enjoy the relaxing effect.
u/andrea270872

I feel like I'm going to Warp speed! Very cool

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rodrigo.siqueira

remix of d/27826 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(0,0,w=2e3,w),i=1e4;i--;x.clearRect(960+C(p=T(i*i-t/9))/(Z=(i/S(t+i+p)+i*p*i/320)/i/i),540+S(p)/Z,K=3*S(i),K))x.globalAlpha=.1

May 25 2023 12:50 AM UTC

}// 140/140

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Galactic knot

u/deobfuscate

The universe gets pretty bored sometimes...
u/Joachim

Wow!!
u/joeytwiddle

There is a region of space they all avoid, except some of them occasionally don't!

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