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/11825 by u/f8f82804

function u(t) {

throw s=t?s.replace(/[\u0300-\u036f]*/g,m=>m.slice(-64)+String.fromCharCode(768+frame++%112)):' '.repeat(512)

Jan 15 2019 11:53 PM UTC

}// 109/140

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#zalgo #scroller #throw #unicode #regex #regexp

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f8f82804

remix of d/10800 by u/Xen

function u(t) {

c.width|=i=0;for(y of'0111111210121012')x.lineTo(1e3+y%2*S(p=t-2.5*'0012340010203040'[i++])*(z=1600/(3+y%2*C(p))),y*z);x.fill('evenodd')

Oct 31 2018 8:26 PM UTC

}// 136/140

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#pentagram -- technically a pentagrammic star dipyramid

u/f8f82804

#d3 #perspective

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f8f82804

remix of d/10326 by u/f8f82804

function u(t) {

c.width=480;for(x.translate(240,99),x.rotate(t),i=17;i--;x.lineTo(3*Z*S(p),Z*((i&4)-2)))Z=99/(3+C(p=T(t)**9*i+t+1.57*(i-(i>>2))));x.stroke()

Oct 16 2018 7:04 PM UTC

}// 140/140

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cleaning up some angular approximations in the #glitch #perspective #d3 #cube

u/f8f82804

#wireframe

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f8f82804

remix of d/9687 by u/f8f82804

function u(t) {

for(w=c.width=384;w-=64;x.beginPath(x.stroke()))for(i=17;i--;x.lineTo(192+w*S(p=1.57*i+t+11*(i>>2))/(Z=4+C(p)),99+.4*w*((i&4)-2+S(t+w))/Z));

Oct 15 2018 6:16 PM UTC

}// 140/140

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#d3 #perspective #cube inspired by https://pycodelic.blogspot.com/2018/10/elast… -- can fit colors with compression, or if somebody can golf better than me

u/f8f82804

#wireframe

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f8f82804

remix of d/10307 by u/f8f82804

function u(t) {

c.width=640;with(x)for(i=9;i--||stroke();lineTo(320+320*S(b=t+Math.atan2(a(2),a(4)))/(Z=3+C(b)),180+226.3*a(1)/Z))a=_=>_&(7&i^(7&i)>>1)?-1:1

Oct 11 2018 11:05 PM UTC

}// 140/140

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cleaning up the gray code #cube -- #d3 #perspective

u/f8f82804

#wireframe

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f8f82804

function u(t) {

with(x)for(globalCompositeOperation='color',s=192,i=9;shadowBlur=i*i--;fillRect(864+s*S(t),444+s*C(t*3),s,s))shadowColor=`hsl(${t*s} 85%45%`

Oct 8 2018 7:54 PM UTC

}// 140/140

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#composite #glow #color

u/donbright

fascinating effect

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f8f82804

function u(t) {

c.width=640;s=64;r=80;with(x)moveTo(X=h=180,h),lineTo(X+=s*C(t),h+(Y=s*S(t))),lineTo(X+=(r*r-Y*Y)**.5,h),lineTo(X+s,h),stroke()

Sep 12 2018 11:03 PM UTC

}// 127/140

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#reciprocating #pison #mechanism with the dimensions from d/9806

Show more comments…
u/donbright

c.width=640 x.stroke(new Path2D(M 180,190 l ${[[C(t)*64,Y=64*S(t)],[(80*80-Y*Y)**.5,-Y]]} 64,0))
u/donbright

that golfs it down from 127 to 98
u/donbright

ok we can go lower. 94: c.width=640 x.stroke(new Path2D(M 180,190 l ${[C(t)*64,Y=64*S(t),(80*80-Y*Y)**.5,-Y,64,0]}))
u/donbright

you have to put back tickmark right before M and right after 64,0]} .. dwitter comment seems to eat the backtick
u/f8f82804

yeah, in comments backticks are used for code blocks
u/f8f82804

I don't know if it's possible to escape it with a backslash like \ or fillStyle=\hsl(...)`
u/f8f82804

...apparently escaping does not work
u/f8f82804

also, that's an excellent path2d use! you should post a remix
u/donbright

i was trying to make a choo choo train but its too many chars

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f8f82804

function u(t) {

for(s=64,r=80,c.width=i=w=480;i--;)for(Y=s*S(a=i/9+t),j=2;j--;x.fillRect(i,j?r-s*C(i/9+t):2*r-s*C(a)-(r*r-Y*Y)**.5,1,2))x.fillStyle=R(255*j)

Sep 12 2018 11:01 PM UTC

}// 140/140

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Comparing #sinusoidal motion (red) with #reciprocating motion of a crank and #piston (black), with stroke of 64 and rod length of 80. TDC at the top.. #math

u/f8f82804

See d/9807 for a mechanism with these dimensions
u/f8f82804

also a #template for graphing functions. #tool

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f8f82804

remix of d/9777 by u/f8f82804

function u(t) {

with(x){for(shadowColor=R(fillRect(0,0,i=c.width=294,i),i,i);i-=3;lineTo(i,y+32))moveTo(i-6,y=99*S(i^7*t));for(j=9;shadowBlur=j--;)stroke()}

Sep 12 2018 5:42 PM UTC

}// 140/140

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#electric #neon #rain, as requested by u/donbright

u/f8f82804

This is the best solution I found to having them not be too fast; we only change the pattern 7 times a second. Using S() means there are occasional patterns in the drops. Change to y=99*Math.random() to see the difference.
u/f8f82804

also see d/9803
u/donbright

hee hee, thanks

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f8f82804

remix of d/9793 by u/f8f82804

function u(t) {

eval(unescape(escape`睩瑨⡸⥸⹬㵴牡湳污瑥ⱬ⡨㵣⹨敩杨瑼㵸⹦㵦楬汒散琬栩ⱡ牣⠰ⱷ㴭㐰〬爽ㄸ〬〬㜩ⱳ瑲潫攨⤬昨堽爪匨琩ⱙ㵲⩃⡴⤫眬㌲ⰹ⤬牯瑡瑥⡡㴱ㄭ䵡瑨⹡瑡渨堯天⤬昨〬〬栬㤩ⱬ⡷⽓⡡⤬〩Ⱳ潴慴攨ⵡ⤬昨眬〬栬㤩`.replace(/u(..)/g,"$1%")))

Sep 12 2018 4:53 PM UTC

}// 140/140

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Shaper #mechanism. Moves faster on the rightward stroke. #compressed

u/f8f82804

https://en.wikipedia.org/wiki/Shaper

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