Dweets awesomed by u/Thom

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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tomxor

remix of d/23549 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨐽𣑡𭁨𛡡𨡳𛁣𛡳𭁹𫁥𛡢𨑣𪱧𬡯𭑮𩀽𙰣𞐹𞐧𛁣𛡷𪑤𭁨𙠽𪐽𝀳𝐲𞱘🐱𛐨𭀫𪐯𜰲𚐥𜠬𦐽𛐭𪐯𜡥𜰻𮀮𩡩𫁬𤱴𮑬𩐽𚁩𧡩🠾𝠩𙠸🰧𬡥𩀧𞠧𘱦𩡦𙰬𮀮𩡩𫁬𤡥𨱴𚀶𝀪𚁘𛱲𚱡𚀲𛑴𙐴𚐫𜐩𛀹𝠭𝠴𚠨𦐯𬠫𨐨𤰨𭀩𚐩𛁫🐵𛱲𛐲𛁫𚐩𬠽𛐭𦐪𦐫𦀪𦀫𜐻`.replace(/u../g,'')))

Aug 13 2021 9:03 PM UTC

}// 140/140

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Smooth Colour #Amiga #Ball

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u/tomxor

If someone can squeeze in a hard shadow and a purple grid we will be done.
u/danny@hille.dk

Beautiful
u/danny@hille.dk

I distinctly remember the grid to be blue... but all the youtube videos shows it to be purple... I think it's a conspiracy :-)
u/ullo

i like
u/KilledByAPixel

dweetabase updated! https://dweetabase.3d2k.com/
u/tomxor

I can't find it now but I seem to remember reading about how emulated colours of amigas look different from real amiga video output. The emulators are probably just spitting out the RGB values and letting the host OS do the gamma etc. I suspect real amiga video output must have been a bit "coloured" which causes this difference.

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ntsutae

function u(t) {

c.width=960
k=S(t/1e3)/1e3
x.fillStyle='Navy'
for(i=k;i<1e3;i++)x.lineTo(C(d=i**3)*270+480,S(d)*270+270)
x.fill()

May 15 2020 12:13 PM UTC

}// 113/140

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Planet

u/aleamb

#planet

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ntsutae

function u(t) {

c.width|=0
for(r=0;r<99;r+=1/16)a=C(r)*888,b=S(r)*99,x.lineTo(960+a+C(k=a*b/2e3+t*9)*30,540+b+S(k)*(S(t)*70+100))
x.stroke()

May 13 2020 7:32 AM UTC

}// 124/140

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Full Duplex

u/tomxor

Or two girls doing some complicated twin skipping rope game :P

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KilledByAPixel

function u(t) {

eval(unescape(escape`𩡯𬠨𪰽𪐽𞐶𜀻𛐭𪐻𮀮𩡩𫁬𚁸𛡡𬡣𚁫𚱩𚱓𚁭👩𚱴𚡫𛰴𚐪𚁲🐨𤰨𭀫𫐯𪰩𚠮𝐫𜐮𝀩𚠱𩐵𛱩𚐬𝐴𜀫𠰨𫐩𚡲𛁳🐴𩐴𛱩𛀰𛀷𛀨𫐽𪐭𭀪𪱼𜀩𙐵𞑼𯁸𛡡𬡣𚁫𚱩𚱓𚁭👭𚠪𝐩𚡲𛰳𛀵𝀰𚱃𚁭𚐪𬠯𜠬𬰽𬠯𞐬𜀬𝰩𚐩𚑸𛡢𩑧𪑮𤁡𭁨𚁸𛡦𪑬𫁓𭁹𫁥👒𚁩𛰴𚐩`.replace(/u../g,'')))

May 6 2020 6:59 AM UTC

}// 140/140

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Blood #Cavern 🩸

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u/Thom

Amazing
u/magna

Wow
u/joeytwiddle

I see red #blood cells
u/pavel

Your art is awesome Frank
u/KilledByAPixel

Thanks Pavel, you too 😊
u/joeytwiddle

This is great, but your 140 char remix is amazing! d/18638

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pavel

function u(t) {

with(x)for(i=999;i--;fillRect(~setTransform(s=24e3/i,0,0,4*s,960-i+9*s*C(a=i+60*t),540+8*s*S(a)),~rotate(T(a*a)),2,2))fillStyle=R(9,i/4,i/3)

May 4 2020 7:34 PM UTC

}// 140/140

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Underwater #cavern

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u/KilledByAPixel

sick
u/KilledByAPixel

looped https://twitter.com/KilledByAPixel/status/12…
u/pavel

One trick here is f();g();h(-1,-1) is the same as h(~f(),~g()) when f and g return a falsy value, undefined in this case.
u/pavel

Notice how none of the distance variables are based on time, only angles are, yet the distances are changing and nothing is rotating...
u/pavel

Try making the moving a little faster :)
u/pavel

After I wrote this I looked for other dweets using a similar technique and this is the earliest one I've found, and it includes an explanation d/10212
u/KilledByAPixel

Amazing work! I have not seen the ~ before, will be using it a lot now. I tried to explain the 60*t trick in one of my blog posts, https://frankforce.com/?p=7160
u/pavel

That is an amazingly detailed explanation with great visual aids.
u/pavel

To clarify your explanation, any integer time works. 60*t is naturally an integer (ish). frame is one char longer without numerical errors. In general, (n*t|0) works for any n.
u/AndrewK

privet
u/katkip

masterpiece
u/joeytwiddle

I think this also counts as a #tunnel
u/Qwitter

Awesome!

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New_Core

remix of d/18573 by u/New_Core

function u(t) {

with(x)for(i=99;i--;fill())beginPath(),arc(960+50*S(i+t),1100-i*12,1100,a=.2*S(i/9+t),a+3),fillStyle=R(0,255-i*5,255-i*6)

May 2 2020 3:49 PM UTC

}// 121/140

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the ocean outside the cavern

u/sigveseb

#cavern

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New_Core

function u(t) {

with(x)for(i=80;i--;fill())beginPath(),arc(960+i*5*S(i+t),600,i*20,a=2.6+.2*S(i/9+t),a+4.2),fillStyle=R(0,i*5,i*6)

May 2 2020 3:27 PM UTC

}// 114/140

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water #cavern

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pavel

remix of d/11930 by u/pavel

function u(t) {

with(x)for(i=-6*t%1;i++<66;fill())for(beginPath(fillStyle=R(8*i,4*i),j=36);--j;arc(960,h+h*S(3*t)**2/i,h/i*(9+C(~~i+6*t^j)),b=9+j/9,b))h=777

May 2 2020 4:35 AM UTC

}// 140/140

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Walking through a #cavern

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u/KilledByAPixel

🤯 genius
u/KilledByAPixel

Looped! https://twitter.com/KilledByAPixel/status/12…
u/sigveseb

Wooow sweet!
u/aleamb

yeah!
u/sigveseb

Really nice colors
u/jick

Holy cow, wow!
u/Xen

sexy!
u/katkip

aannd we have a winner!
u/KilledByAPixel

https://www.reddit.com/r/perfectloops/commen…
u/pavel

the gif is very blurry
u/KilledByAPixel

HD gif for you - https://www.dropbox.com/s/u3wbakb6e4sm00y/pa…
u/Qwitter

Wow!
u/vain

Who needs longer shaders? ;-) Real DemoScene feeling

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KilledByAPixel

remix of d/18494 by u/KilledByAPixel

function u(t) {

for(j=i=1e3;i--;x.fillRect(i%32*60+5*!!t,(i>>5)*60-55,z=t?50:2e3,z))x.fillStyle=t&&R(S(S=_=>i%T(j++%(q=t+4|0)*q+t/1e3)*255),S(),S(),.03)

Apr 27 2020 10:00 PM UTC

}// 136/140

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Glitch Party 3

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KilledByAPixel

remix of d/5737 by u/magna

function u(t) {

for(c.width=64,j=i=2304;i--;x.fillRect(i%64,i>>6,1,1))x.fillStyle=R(S(S=_=>i%T(j++%(q=t+4|0)*q+T(t/1e3))*255),S(),S())

Apr 25 2020 8:22 PM UTC

}// 118/140

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Light Show #glitch

u/tomxor

#crt ? I don't even see the code any more... all I see is trinitron, triad, inline mask...

dwitter.net | Thom (1842)