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.

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Current theme challenge: #Food

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Xen

remix of d/4955 by u/Maxime

function u(t) {

s=250
z=(f,v)=>s+s*f(6.3*v/k)
for(i=k=c.width=1e3;i--;x.lineTo(z(C,y=i*t%k)+s,z(S,y)))x.moveTo(z(C,i)+s,z(S,i));x.stroke()

Sep 26 2020 8:13 PM UTC

}// 122/140

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play and golf

u/Xen

#waitfor it more&more

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PotatoImaginator

remix of d/35976 by u/PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞🐰𞱷𪑴𪀨𮀩𩡯𬠨𪐽𛐨𨐽𜠵𝠩𞱩🁡𞱩𚰫𚑢𩑧𪑮𤁡𭁨𚁦𪑬𫀨𚐩𛁦𪑬𫁓𭁹𫁥👒𚁡𛀱𜠸𚠨𜐫𚀮𝐭𪐯𝐱𜠩𚠪𛠴𚐩𛁡𬡣𚀹𝠰𚰳𚡩𚡓𚁍𨑴𪀮𤁉𛰴𚡓𚁴𚐩𛀸𜀰𛐳𚡩𚡩𛰵𜐲𚱩𛀱𝐰𚠨𜐭𚁩𛱡𚐪𚠶𚐬𜀬𝰩`.replace(/u../g,'')))

Jul 27 2026 4:11 AM UTC

}// 125/140

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#banana - #fruit

u/PotatoImaginator

c.width^=0;with(x)for(i=-(a=256);i<a;i++)beginPath(fill()),fillStyle=R(a,128*(1+(.5-i/512)**.4)),arc(960+3*i*S(Math.PI/4*S(t)),800-3*i*i/512+i,150*(1-(i/a)**6),0,7)

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kimeiga

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<12;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rectsd

Feb 14 2021 9:10 AM UTC

}// 114/140

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u/Xen

welcome to the dwitter family!

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danny@hille.dk

remix of d/18503 by u/BriSeven

function u(t) {

eval(unescape(escape`󨼮󭽩󩍴󪍼󟝮󟜴󞜻󩭯󬬨󪼽󫬪󫬻󪼭󛜬󪜽󪼥󫬬󪬽󪼯󫬻󮌮󩭩󫍬󤭥󨽴󚌲󜜶󛜸󜌪󚍩󙜷󚜭󪬬󜬱󝬭󞌰󚬨󪜯󝼩󛝪󛝃󚍴󚬲󛝪󛼶󚽩󚭮󚬷󚜪󝬬󪬪󜬬󪬪󜬩󚝸󛭦󪝬󫍓󭍹󫍥󟝒󚍲󟜲󝜵󛝪󚬸󛝓󚍩󚽴󚬹󚜪󞜬󬬭󪜪󝌩󛍸󛭳󩝴󥍲󨝮󬽦󫽲󫜨󠼨󜜩󛍳󟜲󛌴󛌰󛌱󜬵󜌬󜼶󜌫󪬪󝼩`.replace(/u../g,'')))

Sep 26 2022 9:17 PM UTC

}// 139/140

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Another BriMix

u/magna

Looks like soft shadows

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@no_identd

remix of d/6447 by u/DirtyDan

function u(t) {

c.width=1920
for(i=b=540;i>0;i-=.5)x.beginPath(),x.ellipse(a=960+i*S(t+i*2.5),((i**2.214297)/i+i+200)/2,i/b*200,i/b*50,0,0,44/9),x.stroke()

Jan 25 2018 1:56 AM UTC

}// 139/140

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This one has an illusion built in. You can mentally switch the rotation of what you see, which you may perceive as a 3D shape.

u/@no_identd

Also, if you add x.globalCompositeOperation='xor', like u/DirtyDan did here: https://www.dwitter.net/d/6430, you can STILL mentally flip it.
u/@no_identd

Actually, I've noticed, u/DirtyDan's original of this also has this illusion built in!

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taupelink

function u(t) {

f=a=>S(a*S(X+S(Y+S(a))))*i;for(r=Math.random,i=k=256;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,x.fillStyle=R(f(h=3+X*Y),f(h+X),f(h+Y))

Nov 25 2020 9:22 PM UTC

}// 139/140

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d/20808

u/taupelink

Work in progress--kind of an aurora effect
u/geb

looks like a glsl shader demo :) very nice!

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baon

remix of d/28977 by u/baon

function u(t) {

for(c.width|=0,X=Y=0,p=i=1e3;i--;x.fillRect(960+400*X,540-400*Y,10,10))
X=i/1e3*2-1,Y=0.5*C(3.14*X+t+S(t*2))

Nov 27 2023 10:56 AM UTC

}// 109/140

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katkip

function u(t) {

cx=1e3
for(i=99;i--;)for(j=40;j--;)X=i-t-25+S(t)*2,Y=3+S(i/3)*S(j/5+t*3),x.fillStyle=R(0,0,Y*84),x.fillRect(cx+1/j*X*cx,60+Y/j*cx,s=999/j,s)

Jul 30 2018 10:57 PM UTC

}// 140/140

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rodrigo.siqueira

remix of d/21282 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
x.fillRect(t*60,t*360,4,4)
x.fillStyle=`hsl(${-t*60},90%,50%)`
x.drawImage(c,5,0)
x.globalCompositeOperation='xor'

Jan 19 2021 11:34 PM UTC

}// 139/140

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Falling #sierpinski #fractal

u/Qwitter

for some unkown reason this color scheme reminds me of colecovision. Nice!

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rodrigo.siqueira

function u(t) {

for(i=900;t<6.3&&i--;x.fillRect(960+i*C(t*4),560-S(t*4)*230+S(i/80+t*4)*210,1,2))
x.fillStyle=`hsl(210 60%${t*4}%`

Nov 26 2018 4:19 PM UTC

}// 114/140

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Trigonometric Object

u/katkip

#d3