Dweets awesomed by u/SchuSlime64

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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pavel

function u(t) {

eval(unescape(escape`𩡯𬠨𫀽𨰮𭱩𩁴𪁼👴𙐽𝀻𫀭𛐻𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛀵𜀬𫰿𝐰𞠱𩐳𚐩𪐽𫀥𜰬𪠽𫀯𜰦𜐵𛁫👬𛰴𞀦𜐵𛁸𛡦𪑬𫁓𭁹𫁥👒𚁩𚰱🀼𝠩𛁸𛡳𩑴𥁲𨑮𬱦𫱲𫐨𪐭𜑼𜐬𛐮𝐬𫰽𛑩𙐲𛀱𚱯𚠱𛠵𛀵𜀪𚀱𞐫𪰭𪠩𛀲𝐪𚀳𞀫𜠪𭀭𪰭𪠭𞀯𚀱𚰲𚠪𚀴𝐭𪰭𪠭𭀪𜐵𚐩𚐩`.replace(/u../g,'')))

Jul 13 2019 3:37 AM UTC

}// 138/140

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Blocks (https://dribbble.com/shots/1783699-Blocks)

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u/pavel

190 for(l=c.width|=t%=4;l--;x.fillRect(0,0,50,o?50:1e3))i=l%3,j=l/3&15,k=l/48&15,x.fillStyle=R(i+1<<6),x.setTransform(i-1|1,-.5,o=-i%2,1+o*1.5,50*(19+k-j),25*(38+2*t-k-j-8/(1+2**(45-k-j-t*15))))
u/KilledByAPixel

👍
u/aleamb

wow!!
u/username

actual f
u/katkip

awesome #compressed
u/katkip

#d3 #loop

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pavel

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼👩🐳𝠻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚀭𞐹𛀰𛀱𞐸𛀱𞐸𚐩𪰽𚁩🠾𜐩𛐸𛑴𙐱𛁢👃𚁁👍𨑴𪀮𤁉𚠨𪐭𜐯𝀫𜐯𚀱𚰱𩐴𚠪𪰩𚐩𛁸𛡦𪑬𫁓𭁹𫁥👩𙐲🰧𘱄𡁄𙰺𙰣𝠶𝠧𛁸𛡳𩑴𥁲𨑮𬱦𫱲𫐨𨐽𤰨𠐩𛁢𛰲𛀭𨠬𨐯𜠬𞐶𜀫𪰪𜐳𜠬𝐴𜀭𪰪𝠶𛐱𞐸𛰨𜐫𪰪𚠴𚐩`.replace(/u../g,'')))

Jul 9 2019 4:35 AM UTC

}// 140/140

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The fit (https://www.reddit.com/r/perfectloops/commen…)

u/pavel

Simplified. Seems too hard to fit even into 194 chars.
u/pavel

194 for(c.width|=i=36;i--;x.fillRect(-99,0,198,198))k=(i>>1)-8-t%1,b=C(A=Math.PI*(i-1/4+1/(1+1e4**k))),x.fillStyle=i%2?'#DDD':'#666',x.setTransform(a=S(A),b/2,-b,a/2,960+k*132,540-k*66-198/(1+k**4))
u/aleamb

love it!
u/katkip

Love it too

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rodrigo.siqueira

remix of d/14525 by u/rodrigo.siqueira

function u(t) {

for(var I=960;I--;)for(var U=P=X=I/190-3,Q=Y=t/3-1.85,k=14;k--;)U=X,X=X*X-Y*Y+P,Y=2*U*Y+Q,X*X>2?x.fillRect(I*2,t*99,2,2):x.fillStyle=R(k**2)

Jun 14 2019 2:56 PM UTC

}// 140/140

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Red rays from the Mandelbrot Set #mandelbrot #fractal

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u/KilledByAPixel

Amazing.
u/artfarnaa

Is there a way to make these fractal examples render faster? Perhaps offload the calculations to web assembly?
u/username

"Red rays" also known as low iteration count
u/13thptr

u/artfarnaa wasm isn't much faster than js on most platforms and it takes a lot of space to set up
u/13thptr

see u/rbong's work on it
u/katkip

i don't understand this so awesome
u/rodrigo.siqueira

Artfarnaa, it is possible to make super fast, see this pure JS fast implementation: https://csl.name/mandelbrot/ There are many tricks specifically created to calculate Mandelbrot Set (e.g. avoid calculations in a rectangle inside the main set because all pixels are white and calculations in this white area is slower than other parts), but no speed optimization were used here because of space constraints. Some tricks to make it faster: do not use time variable to do calculations (because it is max 60 fps), do not plot each pixel, but store them in an array and plot at once using c.putImageData(img)...
u/KilledByAPixel

There is one way to make it very very fast. I just made a quick shader of it for you! https://www.shadertoy.com/view/wtjGz3
u/artfarnaa

Thanks guys, great inspiration.

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katkip

function u(t) {

c.width*=1;x.beginPath();x.lineWidth=9;for(i=5;i--;)x.arc(960,540,300,i*3.14/2+t,i*3.14/2+t+C(C(t)*1.5)*2),x.stroke()

Jun 6 2019 2:51 PM UTC

}// 117/140

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#arc

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pavel

function u(t) {

for(c.width|=t%=i=6;i--;x.lineTo(960+1e3*X*C(A)/z,3e3*(1+t/6-S(a))/z))X=3*C(a=i%2*3.142/(1+1e4**(i-t)))-1,z=6+t+X*S(A=(i+t/4)/.477);x.fill()

May 21 2019 9:58 AM UTC

}// 140/140

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Let's see what unfolds

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u/jylikangas

Clever!
u/katkip

im shocked #genius
u/aleamb

wow!
u/donbright

so great
u/eph_aim

beautiful!
u/katkip

#infinite #loop
u/magna

#pavel
u/KilledByAPixel

Perfect loop 60 fps #GIF for you https://imgur.com/gallery/5kY1gNX
u/Ath0r

just wow
u/artfarnaa

Best dwitter

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KilledByAPixel

function u(t) {

E="''";for(i=8;--i;)E=`localStorage.Q${i}+`+E
eval(unescape(escape(eval(E)).replace(/u(..)/g,"$1%")))

May 20 2019 8:11 PM UTC

}// 101/140

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♛ QUEEN'S GAMBIT ♛ - You may need to go to d/14031, and scroll down and up until the game starts (may take 7 times). Arrow keys move. Mouse aims. R restarts. God save the Queen! #Game

u/KilledByAPixel

#queensgambit

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KilledByAPixel

remix of d/13948 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𩡯𬠨𪐽𜀻𪐼𚁚🐲𩐳𚐻𮀮𩡩𫁬𚁰👮𩑷𘁐𨑴𪀲𡀨𮀮𩡩𫁬𤱴𮑬𩐽𤠨𪐯𞀫𠠪𞐹𚡓𚁩𚐬𪐦𙠡𠠿𞐫𪐯𝀺𪐯𝠬𜰰𚱩𛰹𛀮𜠫𪐩𚐬𬀮𨑲𨰨𚁓𚁩𚐪𜑥𞐫𭀪𜐹𚡂𚠨𢠽𪐡🐱𞐹𞐩𚐥𦠭𞐬𠠿𞀰𜀭𪐪𦠥𞐶𝰺𜐳𜀰𚱩𛰲𛁩𚰫🱊🱂🱩𙐳𞠴𞐹𞠷𞐺𝁥𜰬𜀬𝰩𚐩𠠽𪐾🠹`.replace(/u../g,'')))

May 17 2019 9:16 PM UTC

}// 140/140

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Moon and Stars over a quiet field at night. #landscape #starfield

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KilledByAPixel

remix of d/13895 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𩡯𬠨𪐽𜀻𪐼𚁚🐳𩐳𚐻𮀮𩡩𫁬𚁰👮𩑷𘁐𨑴𪀲𡀨𮀮𩡩𫁬𤱴𮑬𩐽𤠨𪐬𪐯𝀬𜐹𚱩𛰹𛁩🰱𞠮𜠩𚐬𬀮𨑲𨰨𚁃𚁩𚐪𜑥𞐫𭀪𚀹𞐭𚁑🐱𞐹𚡂𚠡𚁩𙠶𜰩𚐩𚐥𦠭𜠹𞐬𠠿𚀹𞀵𛑩𛰳𚱴𚡑𛰳𚐥𞀳𜀺𜐸𜀰𚱩𛰳𛁩𚰫🱩🐽𜡥𜰿𝰹𞡂🱩𙐵𞠹𞐹𞠴𩐳𛀰𛀷𚐩𚑂👩🠾𞐻`.replace(/u../g,'')))

May 17 2019 7:40 PM UTC

}// 140/140

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Martial Landscape Seamless Panorama #landscape #starfield

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pavel

remix of d/13601 by u/pavel

function u(t) {

c.width|=f=(X,Y,Z,d,o=d<7&&5)=>{for(x.fillRect(960+1e3*X/Z,1e3*Y/Z,s=6/Z/Z,s);o--;f(X+R*S(a=t+11*o),Y+R,Z+R*C(a),d+1))R=o&&2**-d}
f(0,0,1,2)

May 8 2019 6:02 AM UTC

}// 140/140

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#sierpinski #pyramid

Show more comments…
u/KilledByAPixel

Wow!
u/Jezza

So great!
u/iverjo

Impressive! #d3
u/katkip

cute
u/rodrigo.siqueira

They said it was impossible. But Pavel did it anyway and here it is.
u/KilledByAPixel

This one was worth of an awesome gif... https://imgur.com/gallery/oHiQizL
u/f8f82804

#perspective
u/KilledByAPixel

reddit says hi https://www.reddit.com/r/perfectloops/commen…
u/katkip

Top of the month
u/yukulele

shouldn't it have a triangular base?
u/pavel

That would be a tetrahedron. Pyramids usually have a square base.
u/vain

So wonderful! Amazing work!

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vinca

remix of d/13321 by u/vinca

function u(t) {

for(c.width=150,x[r="fillRect"](0,0,150,75),i=11250;i--;)x.fillStyle=`hsl(${a=t&((X=9*S(t)+i/75)&(Y=i%75))*t,99*a},90%,50%`,x[r](X,Y,1,S(a))

May 1 2019 3:13 AM UTC

}// 140/140

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u/joeytwiddle

It has a nice fuzzy #tv effect
u/DataMeta

Keeps on giving! #waitforit
u/MAxSaL

I love watching this!
u/magna

#retro #crt

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