Dweets awesomed by u/CalSch

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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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𮀮𩡩𫁬𤡥𨱴𚀰𛀰𛁩🐲𩐳𛁩𚐻𪐭𛐻𮀮𨱬𩑡𬡒𩑣𭀨𞐶𜀫𦐯𚁚👃𚁰𚐪𩀫𞀩𚠨𪀽𝐴𜀩𛁨𚱘𛱚𚡨𛀵𛀸𚐩𦀽𤰨𬀽𪐯𜰮𜐸𜰩𚠨𡰽𤰨𬐽𚁩𛰲𜁼𜀩𛰹𛠵𝐫𭀩𚐫𡰪𝀬𦐽𤰨𬀽𣑡𭁨𛡡𭁡𫠲𚁙👃𚁰𚐬𦠽𠰨𬐩𚠴𚱓𚁰𚐪𠰨𬐩𚐫𭀩𚠨𩀽𣑡𭁨𛡨𮑰𫱴𚁙𛁚𚐩`.replace(/u../g,'')))

Dec 11 2020 2:39 PM UTC

}// 140/140

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perspective torus #d3

u/rodrigo.siqueira

I always learn a lot about perspective by reading Cantelope's code. Thanks!

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rodrigo.siqueira

remix of d/20902 by u/taupelink

function u(t) {

for(i=996;i--;x.fillRect(250*X,250*Y,2e3,1))X=t/2,Y=i/230,h=300*S(Y%S(m=X/2%S(p=C(q=Y*S(X/3))*2)*2+T(i*i**t)/6)),x.fillStyle=R(h*p,h*m,h*q)

Dec 4 2020 5:29 AM UTC

}// 139/140

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Noisy signal

u/taupelink

whoa
u/magna

WOWZA!
u/SMON

haha...not sure why - I guess aliasing - but it sparkles when I scroll :D

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MrHaila

function u(t) {

c.width^=0
for(i=0;i<20;i++){
o=S(S(t*(i+1))*(S(t)-0.5))*800
q=i*98
e=i*2.5
x.fillRect(q,400,50,200+o+e)
x.fillRect(q,700+o-e,50,200-o+e)
}

Dec 3 2020 10:13 PM UTC

}// 139/140

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Hello world!

u/Xen

welcome to the dwitter family!

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taupelink

remix of d/20654 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(Y%S(m=X/6%S(p=C(q=Y*S(X/3))*2)*2)),x.fillStyle=R(h*p,h*m,h*q)

Dec 2 2020 4:43 AM UTC

}// 140/140

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d/20902

u/pavel

You can save 7 chars by doing f=i*t,X=f*f%9,Y=X*f%5 in these instead of Math.random. It seems random enough.
u/taupelink

Oh cool, thank you!! I like the way it changes the animation at the beginning too.

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solendil

function u(t) {

eval(unescape(escape`𠐽𭀿𦰮𛠮𠐬𮱘𛁙𛁚𯑝𞡛𪐽𜑝𒡊🐨𚐽🡍𨑴𪀮𬡡𫡤𫱭𚀩𚠨𜑥𜰭𜠪𦠩𚱚𒡦𫱲𚁚🐲𝐷𚡩𚰫𚠪𛐮𝠻𦀽𢠨𦐽𢠨𚐩𛁁𛡦𪑮𩀨𨐽🡍𨑴𪀮𪁹𬁯𭀨𦀭𨐮𦀬𦐭𨐮𦐩🁚𚱡𛡚𚐻𚐻𮀮𩡩𫁬𤱴𮑬𩐽𤠨𦀯𝀬𭀬𦐯𝀩𒡸𛡦𪑬𫀨𬀽𫡥𭰠𤁡𭁨𜡄𛁰𛡡𬡣𚁘𛁙𛁚𛀰𛀷𚐩`.replace(/uD./g,'')))

Nov 30 2020 2:19 PM UTC

}// 139/140

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Square made of circles (F5 for another pattern), and I promise I'll stop playing with statistical plane filling :)

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tomxor

remix of d/20584 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𜐹𜠬𤠽𝀸𛁩🐸𜀶𝀻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁓𚰹𝠬𥀫𝐴𛁃𚁡👍𨑴𪀮𨑴𨑮𜠨𤰽𪐥𞐷𛑒𛁔👩𛰹𝰭𤠬𬠽𚁓𚡓𚱔𚡔𚐪𚠮𝐩𚠹𚐪𜠰𛑲𙠴𝀦𙡲🠳𝠿𬠼𝀲🱔𛱒𞡓𛱒𞠱𛁲🠳𝠿𬠼𤠺𮠨𜰩𛰵𚐩𮠽𫠽🡮𛐭𙠦𠰨𨐯𜰫𬠫𭀪𞐩𚡃𚁔𛰵𚱺𚁮𚐪𜠩𛑲𛰶`.replace(/u../g,'')))

Nov 14 2020 1:20 PM UTC

}// 139/140

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#stargate connected to a world with a #blackhole

u/tomxor

From "A Matter of Time" episode, requested from u/nbevans on HN.

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tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𜐹𜠬𤠽𝀸𛁩🐸𜀶𝀻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁓𚰹𝠬𥀫𝐴𛁃𚁍𨑴𪀮𨑴𨑮𜠨𤰽𪐥𞐷𛑒𛁔👩𛰹𝰭𤠬𬠽𚁓𚡓𚱔𚡔𚐪𚠮𝐩𚠹𚐪𜠰𛑲𙠴𝀦𙡲🠳𝠿𬠼𝀲🱔𛱒𞡓𛱒𞠱𛁲🠳𝠿𬠼𤠺𮠨𜰩𛰵𚐩𮠽𫠽🡮𛐭𙠦𠰨𥀯𜠫𤰪𥀯𤠫𭀪𞐩𚡃𚁔𛰴𛑺𚁮𚐪𜠩𛑲𛰶`.replace(/u../g,'')))

Nov 13 2020 1:17 AM UTC

}// 140/140

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#stargate

Show more comments…
u/DataMeta

wow WHAT
u/DataMeta

super rad combo of that fluid/smoke technique from a while back and the recent 2.5D Doom texture tricks!
u/chris@grimtech.net

Is this an incoming or outgoing wormhole? thanks
u/magna

WHAT.
u/sigveseb

Holy smokes!
u/tomxor

https://news.ycombinator.com/item?id=25088683
u/aleamb

brutal! amazing!!!
u/rep_movsd

This is one of the all time greats
u/Xen

Yess!
u/UEZ

Awesome. One rookie question: where are the color values saved?
u/red-lady

Stargate!!
u/tomxor

@UEZ the width and height of fillRect are used, when less than one pixel it will interpolate the alpha channel in proportion to the area. The same happens when an edge lies between two pixels (anti-aliasing).
u/UEZ

@tomxor: thanks for your fast reply. :-) That's what I thought but when will width used, when height? I'm trying to under JS by converting it to FB.
u/UEZ

*understand
u/tomxor

The following are equivalent when the values of w and h are between 0 and 1: fillRect(0,0,w,h) == fillRect(0,0,w*h,1). This is because the alpha channel of this pixel value is roughly proportional to the subpixel area (w*h). In terms of the patern we are trying to create, multiplication it's like the continuous version of AND, i.e the binary version is 1 IF w AND h. Additionally a lot of characters are saved when separating into w and h because we dont need to wrap the actual subexpression used to create w and h in parens and multiply them i.e fillRect(0,0,(.1+.2)*(.3+.4),1) becomes fillRect(0,0,.1+.2,.3+.4), that's -5 chars!
u/UEZ

@tomxor: thx.
u/nystrand

epic!
u/jelmo

Nice
u/vain

Wow! This seems to be your stargate... Seems you are not from this world! Incredible!!!

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pavel

function u(t) {

for(c.width|=i=8;--i;)for(w=j=3<<i-1;j--;x.fillRect(-!x.rotate(6.283/w*(j+i/(1+5**(4+i-t%3*5)))),-25*i,2,25))x.setTransform(3,0,0,3,960,540)

Nov 11 2020 8:56 PM UTC

}// 140/140

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#beesandbombs

u/pavel

https://twitter.com/beesandbombs/status/1326…
u/pavel

#symmetry
u/donbright

nnnnnnice

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KilledByAPixel

remix of d/20288 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👫🐲𝐲𒡦𫱲𚁸𛡴𬡡𫡳𫁡𭁥𚀱𜀲𜰬𝐷𝠩𞱫𛐭𞱸𛡲𫱴𨑴𩐨𣑡𭁨𛡐𢐯𝠩𚑸𛡲𩑣𭀨𛐱𩐴𛀨𪠽𪰥𝰩𚠱𞐹𛀱𩐵𛁓𚁪𚰨𪰯𞀴𯀰𚐫𭀩𚠷𞐩𛁫𙐸𝀿𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱫𚠲𚱴𚠶𜁽𘀹𞐥𙁻𪰯𜱽𙐩𨀺𮀮𨡥𩱩𫡐𨑴𪀨𮀮𩡩𫁬𨁥𭡥𫡯𩁤𨀩`.replace(/u../g,'')))

Nov 10 2020 6:36 PM UTC

}// 137/140

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Kaleidoscopic #symmetry

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geb

remix of d/20544 by u/geb

function u(t) {

X=1e3,Y=X/2
for(c.width|=i=2e3;i--;x.fillStyle='#00f',x.fillRect(X+=C(d*=.7),Y+=d,9,i/9),x.fillRect(2e3-X,1e3-Y,9,i/9))d=C(i/45+S(i/99)+t)*2

Nov 10 2020 1:43 PM UTC

}// 140/140

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u/donbright

clever!!!

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