Top dweets by u/magna

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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magna

remix of d/1323 by u/magna

function u(t) {

e=1e3;(i=new Image).src=c.toDataURL('image/jpeg').replace(eval(`/(.{${t%e+e}})./`),'$1');x.filter='sepia(.02)';x.drawImage(i,0,0,1920,1100);

Mar 1 2017 4:00 AM UTC

}// 140/140

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Candy Falls - Requires Chrome

u/magna

Starting off with a blank canvas, I introduce some artifacts by damaging the JPEG export. And then the rest comes through an interesting interplay of JPEG artifacts and sepia filter artifacts, and stretching the image while pasting it back.
u/magna

Seems to be broken on latest version on Chrome.

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magna

function u(t) {

e=1e4;(i=new Image()).src=c.toDataURL('image/jpeg').replace(eval(`/(.{${t%e+e}})./`),'$1a');x.globalAlpha=.8;x.drawImage(i,0,0);

Feb 25 2017 4:46 AM UTC

}// 128/140

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Urban Pollution

u/SpecialAgent

This is a very nice effect, my browser ran out of memory after a short while though. ;)
u/iverjo

Haven't seen this technique before. How does it work?
u/magna

@iverjo: I keep exporting the canvas as base-64 JPEG and randomly screwing up with the data at a particular range that gives this effect while keeping the JPEG intact. Prior art: https://github.com/snorpey/jpg-glitch

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magna

remix of d/32712 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`󨼮󬽴󮝬󩜮󩭩󫍴󩝲󟝠󬽥󬍩󨜨󛬵󨌻󩭯󬬨󨜽󨬽󭌬󪜽󞝥󝌻󪜭󛜻󨜫󟜨󭌪󪜯󨬦󜜩󚬳󛝢󚭓󚍡󚬴󚜯󝌭󨜪󨜯󝌮󜜬󨬽󨬯󜬭󠼨󨜪󜼮󜌩󚝸󛭦󪝬󫍓󭍹󫍥󟝒󚍩󚜬󮌮󩭩󫍬󤭥󨽴󚌳󞌰󜌭󨜪󝽥󜼭󨜪󚬱󜜪󪜬󝜰󜌭󨬪󜭥󜼬󛬱󛌱󚜻`.replace(/u../g,'')))

Nov 8 2024 6:03 PM UTC

}// 122/140

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Marbled meat edition

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magna

remix of d/32603 by u/magna

function u(t) {

eval(unescape(escape`󩭯󬬨󪜽󝬴󜌻󪜭󛜻󮌮󩭩󫍬󤭥󨽴󚌰󛌭󜼰󛌱󛌶󜌩󚝹󟝩󟬾󝜬󦜽󮜪󝜵󛍘󟜨󪜥󜼲󚼨󮜦󜜩󛼲󚜪󝬴󛍸󛭳󩝴󥍲󨝮󬽦󫽲󫜨󫜽󤼨󨜽󣝡󭍨󛭡󭍡󫬲󚍪󟝘󛜨󤼨󭌩󚼱󚜪󞜶󜌬󪼽󦜭󚍃󚍴󛼲󚜫󜜩󚬵󝌰󚜩󛍮󟝃󚍡󚜬󛝮󛍭󛍘󛍙󚜬󮌮󩭩󫍬󤽴󮝬󩜽󤬨󬬽󣝡󭍨󛭨󮝰󫽴󚍪󛍫󚜬󬬯󝌩`.replace(/u../g,'')))

Oct 18 2024 5:26 AM UTC

}// 140/140

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magna

function u(t) {

e='👀';eval(unescape(escape`󚍦󟝦󬭡󫝥󙜱󜬰󚜽󟜰󙬦󚍓󟝍󨝴󪌮󬭡󫭤󫽭󚌩󚬷󯌰󚜊󨼮󭽩󩍴󪍼󟜰󒭸󛭦󫽮󭌽󙼳󩝭󘬧󒭓󙬦󮌮󩭩󫍬󥍥󮍴󚍥󛌨󜜭󩬯󜜲󜌩󚬱󞜲󜌫󜬬󚍓󚬳󚼱󚜪󝜱󚜊󭍨󬭯󭼠󤼿󙽜󭜳󜜶󝌧󞭁󬭲󨝹󚌴󜬭󩬯󜜲󜌪󝌲󯌰󚜮󩭩󫍬󨍜󭜳󜜶󝍠󛭪󫽩󫭠󨌫󩜻`.replace(/u../g,'')))

Sep 14 2023 4:19 AM UTC

}// 134/140

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👀 #waitforit

u/magna

#eyes
u/magna

#throw

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magna

function u(t) {

r=Math.random
x.globalCompositeOperation='multiply'
for(i=3;i--;t<3&&x.fillRect(r()*2e3,r()*1e3,99,99))x.fillStyle=`hsl(${i*120+60} 99%50%`

Nov 27 2022 1:10 AM UTC

}// 139/140

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CMY test

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magna

remix of d/26501 by u/magna

function u(t) {

with(x)beginPath(filter='sepia('),fillStyle=R((s=S(t))*55),arc(960,540,99+s*9,a=t*s,a+.05),fill(),drawImage(c,9,5,1902,1070,0,0,1920,1080)

Nov 23 2022 6:03 AM UTC

}// 138/140

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#waitforit

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magna

remix of d/24492 by u/magna

function u(t) {

c.width|=0
for(i=6800;i--;X/10&1||x.fillRect(400+X*5+S(t+S(t/2)**9*C(Math.hypot(X-85,Y-20))/99)*300,400+Y*5,5,5))X=i%170,Y=i/170|0

Dec 13 2021 5:40 AM UTC

}// 130/140

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#default tremors

u/magna

#waitforit

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magna

remix of d/24294 by u/magna

function u(t) {

e='🏀'
eval(unescape(escape`󨼮󭽩󩍴󪍼󟜰󒭷󪝴󪌨󮌩󩭯󬬨󩭩󫍬󥍥󮍴󚍥󛌹󛌱󝌩󛍤󟝧󩝴󢝭󨝧󩝄󨝴󨜨󜌬󜌬󜼲󛌱󞌩󛭤󨝴󨜬󭍲󨝮󬽦󫽲󫜨󪼽󠼨󭌩󚬹󛍺󟝓󚍴󚜪󝬹󛌭󮬬󪼬󞜶󜌬󪜽󝜴󜌩󞽩󛜭󞽦󪝬󫍒󩝣󭌨󪜥󜼲󛜱󝬬󪜯󜼲󛜹󛌱󛌱󚜩󩭩󫍬󤽴󮝬󩜽󤬨󛬮󛭤󛭳󫍩󨽥󚍯󟝩󚬴󛍯󚼴󚜩`.replace(/u../g,'')))

Nov 5 2021 3:03 AM UTC

}// 140/140

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Bouncy pixellated basketball

u/magna

Couldn't golf it down enough to hide the emoji at the center (below the rendering)
u/magna

*pixelated
u/magna

uncompressed: c.width|=0 with(x)for(fillText(e,9,14),d=getImageData(0,0,32,18).data,transform(k=C(t)*9,z=S(t)*69,-z,k,960,i=540);i--;fillRect(i%32-16,i/32-9,1,1))fillStyle=R(...d.slice(o=i*4,o+4))

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magna

remix of d/23045 by u/magna

function u(t) {

eval(unescape(escape`𒡰👮🐾𮱡🐰𞱦𫱲𚁩👮𛐱𞱩🠱𞰩𨐫🐡𚁮𙑩𛐭𚐻𬡥𭁵𬡮𘁡𯐻𬐽𭀪𝐻𬠽𬐯𣑡𭁨𛡐𢐪𝐻𮀮𬱥𭁔𬡡𫡳𩡯𬡭𚁫👃𚁱𚐬𮠽𤰨𬐩𛀭𮠬𪰬𞐶𜀬𝐴𜀩𞱸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𬀨𬐼🀱𚐪𜱽𛀹𞐥𛀵𜀥𨀻𮀮𩡩𫁬𤡥𨱴𚁫𚡲𛐳𛁺𚡲𛐳𛀶𛀶𚐠`.replace(/u../g,'')))

Jun 8 2021 6:03 AM UTC

}// 132/140

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More prime factor count spiral graphing

dwitter.net | magna (3923)