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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Current theme challenge: #Opposites

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f8f82804

function u(t) {

c.width^=0;with(x){lineWidth=6;translate(960,540);rotate(42*t);fill(arc(0,0,440,0,3));for(i=30;i--;stroke())beginPath(),arc(0,0,15*i,i,i+2)}

Aug 23 2018 11:01 PM UTC

}// 140/140

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Benham's top #illusion -- https://en.wikipedia.org/wiki/Benham%27s_top

u/f8f82804

#opticalillusion

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f8f82804

function u(t) {

d='   ';
a=47+2*((2*t|0)%12);
for(i=c.width^=0;i--;)d.charCodeAt(i%d.length)>>8&&x.fillRect(a*(i%a|0),a*(i/a|0),a,a);

Aug 23 2018 5:34 PM UTC

}// 122/140

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f8f82804

remix of d/9191 by u/f8f82804

function u(t) {

x.globalAlpha=.1;for(i=a=30;z=--i*a*C(b=i+99*t/i/i);)x.fillRect(960+3e5*S(b)*i/(d=2e3-z),540+1e3*z/d,9,9)

Aug 16 2018 1:29 AM UTC

}// 105/140

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#perspective #galaxy

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f8f82804

function u(t) {

v=z=>[960*(1+S(z)),540*(1+C(z*3))]
with(x)moveTo(...v(t)),lineTo(...v(--t)),stroke()

Aug 10 2018 8:00 PM UTC

}// 84/140

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f8f82804

remix of d/9190 by u/f8f82804

function u(t) {

x[s='fillStyle']='#0001';x[r='fillRect'](0,0,w=1920,w);for(i=a=30;z=--i*a*C(b=t/i/i);x[s]='red')x[r](w/2+3e5*S(b)*i/(d=w-z),w/4+1e3*z/d,9,9)

Aug 10 2018 12:00 AM UTC

}// 140/140

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#galaxy #trails #perspective -- had to give up the "random" starting locations to fit in a perspective transform. Using red saves a character over #fff.

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f8f82804

function u(t) {

window['ev'+'al'](unescape(escape`𮀮𩡯𫡴🐨𨰮𭱩𩁴𪁼🐰𚐯𜠲𚰧𬁸𘠧𒡦👹🐾𬰽🡸𛡦𪑬𫁔𩑸𭀨𬰬𞐶𜀭𮀮𫑥𨑳𭑲𩑔𩑸𭀨𬰩𛡷𪑤𭁨𛰲𛁹𚐊𩠨𝀲𜀩𨁁𩁂𫁯𨱫𘁂𮑰𨑳𬱥𩁠𒡦𚀶𝠶𚑠𞠭𬁠`.replace(/u../g,'')))

Nov 15 2019 4:49 AM UTC

}// 115/140

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d/16644

u/katkip

f(420), f(666) noice

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f8f82804

remix of d/16561 by u/f8f82804

function u(t) {

for(X=w=c.width^=0;X-=4;x.fillRect(0,-w/2,9,w))x.setTransform(α=C(θ=S(z=X/99-t)/4),β=S(θ),-β,α,X,540),x.fillStyle=`hsl(${X/w}turn,95%,50%)`

Nov 8 2019 10:05 PM UTC

}// 139/140

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#rainbow #distortion

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f8f82804

function u(t) {

r=_=>2*Math.random()-1;for(n=s=480;n--;z*z+w*w<4&&x.fillRect(s*a+1200,s*b+600,2,2))for(a=z=r()-.5,b=w=r(),i=16;i--;)z=z*z-w*w+a,w=2*z*w+b

Oct 9 2019 6:15 PM UTC

}// 137/140

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low-iteration #fractal

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f8f82804

remix of d/15119 by u/f8f82804

function u(t) {

eval(unescape(escape`景爨椽㠶㐻椭ⴻ呛楝⹪⬽㈪䵡瑨⹲慮摯洨⤭椯㌶⥷楴栨呛楝㵴㽔孩崺筡㨰Ɫ㨰ⱪ㨰紩砮晩汬剥捴⡩┱㘪ㄲ〫㐫ㄱ㈪⡡㵡⼲⬨⡪☲㽪㩾権☱⤯㈩Ȿ縨椥ㄴ㐯ㄶ⤪ㄲ〫㐫ㄱ㈪⡢㵢⼲⬨樦㈩⼴⤬ㄬㄩ`.replace(/u(..)/g,"$1%")))

Jul 23 2019 9:53 PM UTC

}// 132/140

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this space of #chaos fractals uses a different vertex ordering that leads to rotational symmetry instead of the mirror symmetry of d/15119

u/f8f82804

#chaosgame

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f8f82804

remix of d/15114 by u/f8f82804

function u(t) {

eval(unescape(escape`景爨椽㠶㐻椭ⴻ⥷楴栨呛楝㵴㽔孩崺筡㨰Ɫ㨰ⱪ㨰紩砮晩汬剥捴⡩┱㘪ㄲ〫㐫ㄱ㈪⡡㵡⼲⬨⡪⬽㈪䵡瑨⹲慮摯洨⤭椯㌶⤦ㄩ⼲⤬繾⡩┱㐴⼱㘩⨱㈰⬴⬱ㄲ⨨戽戯㈫⡪☲⤯㐩ⰱⰱ⤻`.replace(/u(..)/g,"$1%")))

Jul 23 2019 9:47 PM UTC

}// 126/140

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exploring a cyclic space of #chaos game psuedo-fractals

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