Random dweets | Dwitter

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: #Food

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Agnes

function u(t) {

for(c.width|=i=9;i--;x.fillRect(100*(4+i+3*S(t)),-200,50,200))O=i-4,x.filter=`drop-shadow(0px 600px ${(O>0?O:-O)*10}px hsl(${10*t},99%,50%)`

Oct 22 2021 6:49 PM UTC

}// 140/140

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Drop shadow #default (very simple)

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ellisk1

function u(t) {

for(k=c.width|=n=960;k--;x.fillRect(n+(y/3+40)*C(a),y,7,99))j=k%n,a=j/62+((j/192|0)+(k>n))*3.2,x.fillStyle=R(b=S(a)*255,-b/2),y=(a+t*5)*30%n

Dec 25 2018 11:41 AM UTC

}// 140/140

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Ribbon Christmas Tree

u/rodrigo.siqueira

#christmas #tree

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gpolonus

remix of d/17824 by u/gpolonus

function u(t) {

f=(a,y)=>x.fillRect(a,y,9,9)
t||c.addEventListener('mousemove',e=>((a,y)=>[a,2e3-a].map(d=>f(d,y)|f(d,1e3-y)))(e.x*3.4,e.y*3.4))

Mar 3 2020 8:45 PM UTC

}// 128/140

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Even shorter 4 mouse cursors

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pedro

function u(t) {

c.width=2e3;v='👌👌👌👌👌👌👌👌👌👌👌👌👌👌👌👌👌';for(i=v.length;i--;)x.font=70+S(t*5)*20+'px A',x.fillText('👌',i*69,540+S(t*9+i)*20)

Jan 3 2018 12:45 PM UTC

}// 117/140

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metamero

function u(t) {

c.width|=onmousemove=e=>X=e.x
t?M.map((e,i)=>e||x.fillRect(i?8+(i-1>>3)*136:X*1920/innerWidth-60,i?8+(i%8)*44:999,120,40)):M=[...Array(113)]

May 14 2019 8:05 PM UTC

}// 140/140

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#breakout #tribute #interactive come to discord chat to draw the ball and test collisions

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solendil

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐧𪑮𭡥𬡴𚀩𘁢𫁵𬠨𜡰𮀧𒡩𩠨𘐨𩡲𨑭𩐥𞀩𚑻𒡣𛡷𪑤𭁨𯀽𮠽𚀩🐾𣑡𭁨𛡲𨑮𩁯𫐨𚐪𜠰𛐱𜀊𩀽𚁘𛁙𛁄𚐽🡘🀲𩐳𙠦𩀨𦀫🐱𜀬𦐫👺𚀩𚱄𛁄𛁸𛡦𪑬𫁒𩑣𭀨𦀬𦐬𜠰𛀲𜀩𚑼𯁺𚀩🠹𛠸𝐦𙡤𚁘𛁙𛁺𚀩𛰲𚐊𩀨𜀬𝐰𜀬𜀩𯐊`.replace(/uD./g,'')))

Oct 13 2020 2:18 PM UTC

}// 134/140

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Tesla

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Jabo

function u(t) {

eval(unescape(escape("𨰮𭱩𩁴𪀽𨰮𪁥𪑧𪁴👦🐲𝐵𛁫🐲𜀻𩡯𬠨𪐽𜀻𪐼𩠻𪐫𚰩𩡯𬠨𪠽𜀻𪠼𩠻𪠫𚰩𮀮𩡩𫁬𤡥𨱴𚁩𛁪𛀱𛀱𚐬𦀽𪐯𩠭𛠵𛁙👪𛱦𛐮𜰬𩀽𣑡𭁨𛡳𬑲𭀨𦀪𦀫𦐪𦐩𛐮𜠬𩀽𩀫𤰨𪰪𦀫𭀪𪰩𚡓𚁫𚡙𚱴𚡫𚐪𤰨𪰪𛠰𜀱𚐼𜀿𦀫𦐫𜐺𜀬𮀮𩡩𫁬𤱴𮑬𩐽𤠨𩀬𩀬𩀬𩀩").replace(/uD./g,'')))

Oct 30 2021 10:16 PM UTC

}// 140/140

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sphere displacement sdf func

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384.cz

function u(t) {

c.width=999
for(i=190;i--;)x.fillStyle=R(255,i,0),x.fillRect(199+S(i+t)*i,199+C(i+t)*i,i,i)

Oct 12 2022 12:36 PM UTC

}// 91/140

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#fireball

u/4ce

The #sun like a #food !

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afs

function u(t) {

x.rotate(.001);d=t<40&&-t*10*t;x.strokeRect(1000+(S(t)*(-100+C(t)))*-3,800+(-(S(t)*30))*.6,d*2,d*2);x.rotate(S(t)/(t*t*t*t*Math.PI*10))

Oct 3 2019 10:27 AM UTC

}// 135/140

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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

Show more comments…
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.