Top dweets by u/f8f82804

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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f8f82804

remix of d/8882 by u/BalintCsala

function u(t) {

c.width=500
for(j=3;j--;)for(i=255;i--;x.fillRect(i,50+j*65+S(T=i/35-t*3)*i/20,1,66))x.fillStyle=`hsl(${120*j} 90%${25*(1+(a=C(T))+a**5)}%`

Aug 9 2018 5:53 AM UTC

}// 139/140

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#phong #flag #pbr

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f8f82804

function u(t) {

for(X=c.width^=0;X--;x.fillRect(0,540+250*S(X/250+t),2,2))x.setTransform(1,0,0,1,X,0);

Nov 6 2019 5:47 PM UTC

}// 86/140

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#graph of the sin() function

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f8f82804

remix of d/12681 by u/f8f82804

function u(t) {

eval(unescape(escape`景爨椽ㅥ㐻椭ⴻ砮灵瑉浡来䑡瑡⠮⸮畛稽椥㉥㍝㴨畛穝籼孮敷⁉浡来䑡瑡⡕楮琸䍬慭灥摁牲慹⹯昨稯㠬〬戽爨⤪㈵㔬㈵㔩ⰱ⤬稬截㑝⤮浡瀨⡶ⱪ⤽㹪㽶⬲ⴴ⩲⠩㩶⤩⥲㵍慴栮牡湤潭`.replace(/u(..)/g,"$1%")))

Mar 7 2019 6:52 PM UTC

}// 127/140

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I see a 3x speedup using putImageData over fillRect

u/f8f82804

for(i=1e4;i--;x.putImageData(...u[z=i%2e3]=(u[z]||[new ImageData(Uint8ClampedArray.of(z/8,0,b=r()*255,255),1),z,b*4]).map((v,j)=>j?v+2-4*r():v)))r=Math.random

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f8f82804

remix of d/7744 by u/rjro

function u(t) {

c.width=32;d=new Date>>>8;for(i=6;i--;)for(j=20;j--;)"縿Ϡ庽纵粇皷皿簡线粧碾⪿䘮㨿嚿ᒿ".charCodeAt((d>>i*4)&15)&1<<j%20&&x.fillRect(27-5*i+j/5|0,j%5+7,1,1)

Jan 26 2019 5:13 AM UTC

}// 139/140

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#hex #clock

u/f8f82804

the font is from d/11960
u/f8f82804

Each tick takes 256/1000 sec, so each pair of digits gives a value 0-255 in units of 4.66 hours, 1.092 minutes, and 0.256 seconds, respectively.
u/f8f82804

The whole clock only rolls over once every 49.71 days.

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f8f82804

function u(t) {

c.style.filter='invert(1)';x.fillStyle=`#2ea82e`;x.fill(new Path2D('M0 1080v-540h640a320 320 0 0 1 320-320 320 320 0 0 1 320 320h640v540'))

Jan 24 2019 12:34 AM UTC

}// 139/140

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#minimal #outrun #path2d #sunset

u/mxfh

had a habit of setting up variables in a setTransform, if only there would be a shorthand for that https://www.dwitter.net/d/2119

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f8f82804

function u(t) {

pauseDemo();throw t;

Jan 23 2019 10:55 PM UTC

}// 20/140

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manually-executed dweet -- scroll away and back to execute another frame

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f8f82804

function u(t) {

loop=u;throw t;

Jan 23 2019 10:54 PM UTC

}// 15/140

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single #frame dweet

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f8f82804

function u(t) {

for(i=c.width^=0;i--;x.fillRect(X/d+960,Y/d-3e3,s=30-d*1e4,s))a=S(ϕ=i/612),θ=i*37+C(i/99+t),d=Math.hypot(X=S(θ)*a,Y=C(ϕ)+9,C(θ)*a+5)/4e3

Jan 15 2019 12:21 AM UTC

}// 136/140

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my #d3 #hypot #perspective #projection of a #sphere #model without any #distortion #correction

u/f8f82804

remix of d/11749

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f8f82804

function u(t) {

r=a=>Math.random()*a|0;throw t?s=s.substring(0,i=1+r(s.length-1))+String.fromCharCode((3<<8)+r(112))+s.substring(i):s='【 Ｄ Ｗ Ｉ Ｔ Ｔ Ｅ Ｒ 】'

Jan 14 2019 9:35 PM UTC

}// 138/140

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#unicode #corruption #glitch

u/f8f82804

#zalgo

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f8f82804

remix of d/11798 by u/f8f82804

function u(t) {

throw t?(s=String.fromCharCode(frame)+s):s=''

Jan 14 2019 9:17 PM UTC

}// 45/140

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#unicode #scroller

u/f8f82804

this one could be slightly smaller if you change it from s=...+s to s+=..., but this totally changes the effect

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