Dweets awesomed by u/@noel

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: #Opposites

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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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jasnh

remix of d/26297 by u/jasnh

function u(t) {

t?0:q=9;p=[],F=(a)=>x.fillRect(a%q*9,(a/q|0)*9,9,9),c.onclick=e=>{f=d=i=1;q++;for(c.width+=0;f?i<1e5:f=d=i;i++,f--)(p[i]=!p[i-d])?F(i):0}

Jun 3 2023 3:17 PM UTC

}// 137/140

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wrapping that sequence in all the aspect ratios

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@noel

function u(t) {

eval(unescape(escape`󩭯󬬨󮌮󨽬󩝡󬭒󩝣󭌨󜌬󜌬󜜹󜬰󛌱󜌸󜌩󛍪󟜭󜜻󪬼󚍷󟜲󝜵󚜻󪜫󚼩󩭯󬬨󮜽󜬪󪬫󚼯󭼭󜜬󪜽󛜱󞽩󟍷󞽩󚼫󚝫󟜲󚭩󛽷󛜱󛍤󟝍󨝴󪌮󬽱󬭴󚍫󚭫󚽹󚭹󚜬󨜽󣝡󭍨󛭡󭍡󫬲󚍹󛍫󚜬󮬽󭼪󠼨󨜩󛽤󚽴󚭷󧭷󚭓󚍡󚜯󩌫󭌪󭼬󮌮󩭩󫍬󤭥󨽴󚌴󜬰󚼴󚭩󛌴󚭪󛍮󟜨󮬦󭼩󛽷󚬴󛍮󚜻`.replace(/u../g,'')))

Jun 3 2023 1:02 PM UTC

}// 140/140

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Remix of d/27866 Stereographic Projection

Show more comments…
u/@noel

I don't know why I couldn't post this in the 'change code box'. Maybe compressed code isn't allowed there?
u/@noel

I changed the code following a suggestion by u/KilledByAPixel who indicated that using fillStyle in a big loop slows the code a lot. And indeed, the framerate doubled. Though I had to use clearRect now. Maybe there is another solution for that? for(x.clearRect(0,0,1920,1080),j=-1;j<(w=255);i++)for(y=2*j++/w-1,i=-1;i<w;i++)k=2*i/w-1,d=Math.sqrt(k*k+y*y),a=Math.atan2(y,k),z=w*C(a)/d+t*w^w*S(a)/d+t*w,x.fillRect(420+4*i,4*j,n=(z&w)/w*4,n);
u/danny@hille.dk

Setting the width or height of the canvas will reset the canvas. c.width+=0 will do the trick, and besides being a great golfing trick, it is also faster than clearRect
u/danny@hille.dk

Math.sqrt(x) can be golfed to x**.5 '**' is an Exponentiation assignment operator: https://developer.mozilla.org/en-US/docs/Web…
u/danny@hille.dk

What you do here Math.sqrt(k*k+y*y) is how you calculate the length of the hypotunusis. javascript math class got you covered with: Math.hypot(x,y)
u/danny@hille.dk

Keep up the good work!
u/@noel

u/danny@hille.dk Thank you so much!
u/@noel

Dear @danny@hille.dk Since you answered so kindly and are obviously skilled in 'golfing' I dare to ask you one more question. I am struggeling to dweet to minify my next dweet. The original code would be: for(h=1080,b=540,c=420,d=950,g=x.createRadialGradient(d,b,0,d,b,c),g[a="addColorStop"](0,"#4BB"),g[a](1,"#005"),x.fillStyle=g,x.fillRect(c,0,h,h),i=6e3;i--;)k=d+S(i+t)*S(i*i)*c,y=b+c*C(i*i),x.fillText("◻️",k,y) But with 210 characters far to big, even compressed (149). So I tried to create the gradient drawing circles like; for(d=950,b=540,s=0,c=420,c.width+=0,i=40;i--;)x.beginPath(s+=2),x.arc(960,540,40*i,0,7),x.fillStyle=hsl(231,${s}%,${s/2}%),x.fill();for(i=6e3;i--;)k=d+S(i+t)*S(i*i)*c,y=b+c*C(i*i),x.fillText("◻️",k,y) But that only saved 7 characters and compressed still has 147. Is there still something possible?
u/danny@hille.dk

Hi @Noel, When making a Dweet, think of best practice and do the opposite: only use variables when you need them, and wait until you need to use them the first time to initialize them. 194b, but I'm sure it can be golfed even further: for(g=x.createRadialGradient(d=950,b=540,0,d,b,e=420),g[a="addColorStop"](0,"#4BB"),(x.fillStyle=g)[a](1,"#005"),x.fillRect(e,0,h=1080,h),i=3e3;i--;)x.fillText("◻️",d+S(i+t)*S(i*i)*e,b+e*C(i*i))
u/danny@hille.dk

Cool effect!
u/danny@hille.dk

eval(unescape(escape\`󩭯󬬨󩼽󮌮󨽲󩝡󭍥󤭡󩍩󨝬󡽲󨝤󪝥󫭴󚍤󟜹󝜰󛍢󟜵󝌰󛌰󛍤󛍢󛍥󟜴󜬰󚜬󩽛󨜽󘭡󩍤󠽯󫍯󬭓󭍯󬌢󧜨󜌬󘬣󝍦󩬢󚜬󚍸󛭦󪝬󫍓󭍹󫍥󟝧󚝛󨝝󚌱󛌢󘼰󜌵󘬩󛍸󛭦󪝬󫍒󩝣󭌨󩜬󜌬󪌽󜜰󞌰󛍨󚜬󪜽󜽥󜼻󪜭󛜻󚝸󛭣󫍥󨝲󤭥󨽴󚍤󚽓󚍩󚽴󚜪󤼨󪜪󪜩󚭥󛍢󚽥󚭃󚍩󚭩󚜬󝜬󝜩\`.replace(/u../g,'')))
u/danny@hille.dk

remove \

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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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@noel

function u(t) {

eval(unescape(escape`󮌮󩭩󫍬󤽴󮝬󩜽󘭲󩽢󚌰󛌰󛌷󜌩󘬊󮌮󩭩󫍬󤭥󨽴󚌰󛌰󛌱󞜲󜌬󜜰󞌰󚜊󩭯󬬨󪜽󜝥󜼻󪜼󜝥󝌻󪜫󚼩󮽰󟝔󚍔󚍩󚽓󚍴󛼱󩜸󚜩󚭩󚜊󭬽󤼨󪜩󛼹󞜊󪼽󞜶󜌫󤼨󬌩󛽶󒭹󟜵󝌰󚽃󚍰󚜯󭬊󫼽󚍰󙜸󝜩󛼵󚼱󒭸󛭣󫍥󨝲󤭥󨽴󚍫󛍹󛍮󟜮󝜪󫼬󫬩󘌊󮌮󩽬󫽢󨝬󠝬󬍨󨜽󛬱󯜻`.replace(/u../g,'')))

Jun 2 2023 8:19 PM UTC

}// 137/140

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The black Sun.

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Ohead

function u(t) {

for(a=0;a<9999;)x.fillRect((b=(t*.001+1)**(a++))%1920,b/1920,1,1)

Jun 2 2023 12:31 AM UTC

}// 65/140

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Gradient-O-Tron

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New_Core

function u(t) {

with(x)for(fillRect(0,0,w=2e3,w),a=i=540;i--;strokeRect(0,a-(i%2<1?-i:i),w,w))setLineDash([i]),lineDashOffset=(-w/2-i*t)%i,strokeStyle=R(i)

Jun 1 2023 10:56 PM UTC

}// 139/140

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based on one of my older once...

u/danny@hille.dk

NICE!

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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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@noel

function u(t) {

eval(unescape(escape`󩭯󬬨󪬽󛜱󞽪󟌨󭼽󜬵󝜩󞽩󚼫󚝦󫽲󚍹󟜭󜜫󜬪󪬫󚼯󭼬󪜽󛜱󞽩󟍷󞽩󚼫󚝻󪼽󛜱󚼲󚭩󛽷󒭤󟝍󨝴󪌮󬽱󬭴󚍫󚭫󚽹󚭹󚜊󨜽󣝡󭍨󛭡󭍡󫬲󚍹󛍫󚜊󮬽󭼪󠼨󨜩󛽤󚽴󚭷󧬨󭼪󤼨󨜩󛽤󚽴󚭷󚜊󮌮󩭩󫍬󤽴󮝬󩜽󤬨󩌬󮬦󭼬󮬦󭼩󒭸󛭦󪝬󫍒󩝣󭌨󪜬󪬬󜜬󜜩󯜻`.replace(/u../g,'')))

Jun 1 2023 6:02 PM UTC

}// 133/140

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Stereographic Projection

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u/@noel

My first dwitter. I reduced the drawn area, but it still runs very slow
u/@noel

for(j=-1;j<(w=255);i++)for(y=-1+2*j++/w,i=-1;i<w;i++){k=-1+2*i/w d=Math.sqrt(k*k+y*y) a=Math.atan2(y,k) z=w*C(a)/d+t*w^(w*S(a)/d+t*w) x.fillStyle=R(d,z&w,z&w) x.fillRect(i,j,1,1)}
u/@noel

In java this runs smoothly.
u/@noel

A bit of a disappointment. I am going to try to do this with bigger rectangles now.
u/Xen

nicely done! welcome to the dwitter family
u/KilledByAPixel

fillStyle can be slow when called this often (60,000+ times per frame), you can make a faster/smaller version in grayscale by removing the fillStyle and doing this x.fillRect(i,j,1,(z&w)/w)
u/danny@hille.dk

uncompressed using grayscale and some other golfing tricks ->c.width=w=255;for(m=4e4;m--;x.fillRect(i,j,((C(a=Math.atan2(y,k))*w/d+t*w^S(a)*w/d+t*w)&w)/w,1))i=m%w,j=m/w,d=Math.hypot(k=i/w-.5,y=j/w-.3)
u/danny@hille.dk

Great first Dweet, by the way :-)
u/@noel

u/danny@hille.dk Thank you. Your solution is really nice. I am playing right now with it.

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deobfuscate

function u(t) {

c.onclick=_=>{c.width+=0;x.font="30em'";x.fillText("d/"+Math.floor(Math.random()*27862),200,700)}

Jun 1 2023 5:03 PM UTC

}// 98/140

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Dweet Finder! Click to generate. (doesnt check if it's removed)

u/deobfuscate

And no, it wont find this dweet.

dwitter.net | @noel (1997)