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

remix of d/11688 by u/f8f82804

function u(t) {

for(i=c.width^=0;i--;x.fillRect(960+800*S(θ)*S(ϕ)/Z,540+800*C(ϕ)/Z,s=18*(Z>2?.1:2.1-Z),s))ϕ=i/612,θ=i*37+(i/9)**C(i+t)/99-t/2,Z=C(θ)*S(ϕ)+2

Jan 7 2019 10:32 PM UTC

}// 139/140

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#perspective #sphere #pointcloud #swarm #traffic

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f8f82804

remix of d/9721 by u/f8f82804

function u(t) {

for(i=c.width^=0;i--;){
ϕ=i/3/(99+S(t));
X=S(i)*S(ϕ);
Y=C(ϕ);
Z=C(i)*S(ϕ)+2;
if(Z<1.6)x.fillRect(960+800*X/Z,540+800*Y/Z,s=32*(1.6-Z),s);
}

Sep 9 2018 9:35 PM UTC

}// 139/140

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#cell #sphere #animated #perspective

u/donbright

thats weird... like a fruit or something

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f8f82804

remix of d/9674 by u/f8f82804

function u(t) {

with(x)for(i=c.width^=0;i--;beginPath(fill()))C(a=2*t-i)>0&&arc(960+((s=750+330*S(t))*i-i*i)**.5*S(a),s-i,18*C(a)*(1-(i*2/s-1)**2)**.5,0,7)

Sep 5 2018 10:40 PM UTC

}// 139/140

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#sphere

u/donbright

thats cool... how does it work?
u/joeytwiddle

Very nice! #halftone
u/f8f82804

u/donbright: I used the parameterization from d/5600. I like it a lot because it keeps fairly even density of dots on the surface. It's based on cylindrical coordinates where each point is at a different vertical level and the points spiral around. The key is that not all values of i result in drawing a dot. We drop the back half of the sphere with C(a) >0, but we also implicitly drop points where s*i-i*i is negative
u/donbright

thanks... fascinating...

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f8f82804

function u(t) {

f=a=>j*S(i^j)/24+a;with(x)for(i=22;i-->10;)for(j=18;j--;strokeRect(2,2,58,58))setTransform(1,0,0,1,f(60*i),f(60*j)),rotate(f(0)),lineWidth=3

Aug 28 2018 10:29 PM UTC

}// 140/140

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A tribute to _Schotter_ -- Georg Nees, 1968

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f8f82804

remix of d/9486 by u/f8f82804

function u(t) {

x.drawImage(c,-15,-9.2,1950,1098);x.font=99*(1+t%1)+'px a';m=x.measureText(s='🛤');x.fillText(s,960-m.width/2,530+m.width/2)

Aug 28 2018 7:31 PM UTC

}// 123/140

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u/joeytwiddle

Wow! Great effect. :D
u/katkip

Nothing on Chrome :( The emote is different
u/magna

NICE!
u/f8f82804

u/katkip: this only works on some of my systems, but all the ones with a color font for this point seem to work well

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f8f82804

function u(t) {

t?x.rotate(.01):x.translate(960,540);for(a=s=32;a--+s;c=4+S(t))for(b=s*2;b--+s;x.fillRect(s*a,s*b,s,s))x.fillStyle=`hsl(${c*a^c*b+t} 99%50%`

Aug 26 2018 2:26 AM UTC

}// 140/140

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f8f82804

remix of d/25539 by u/ArthurThuczsec

function u(t) {

with(x)for(i=s=311;--i;)fill(arc(s*(A=S(a=i/99))*S(b=t+i)+960,220*(A*C(a)*S(t)+S(a)+2),i,!beginPath(fillStyle=`hsl(9,90%,${99-i/2}%,.7`),7))

May 24 2022 6:02 PM UTC

}// 140/140

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#tongue

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f8f82804

remix of d/16553 by u/f8f82804

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁦𪑬𫁒𩑣𭀨𜀬𜀬𦀽𨰮𭱩𩁴𪁞🐰𛁘𚐬𭁲𨑮𬱬𨑴𩐨𦀯🐲𛀵𝀰𚐻𛐭𦀻𩡩𫁬𤡥𨱴𚀰𛁙🐴𜠰𚡓𚁘𛑴𚐬𦐯𞐬𦐯𥀨𮠩𚠪𜠩𚑲𫱴𨑴𩐨𤰨𭀯𦀩𚰮𜀳𚐬𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱺👘𚱴𛱘𯐬𞐰𙐬𜰲𙐬𛠱𚑠`.replace(/u../g,'')))

Nov 6 2019 8:27 PM UTC

}// 123/140

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f8f82804

remix of d/12142 by u/f8f82804

function u(t) {

with(x)t||fillRect(t,t,a=5e3,a),setTransform(9,0,0,9,960,540),rotate(w=t&&w<a?w+2.4:1),fillStyle=`hsl(${t}rad 95% 50%`,fillRect(w**.5,0,2,2)

Feb 4 2019 7:57 PM UTC

}// 140/140

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#rainbow #phyllotaxis with #squares -- thanks to u/pavel

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f8f82804

remix of d/10811 by u/f8f82804

function u(t) {

c.width=480;for(i=11;--i;x.lineTo(a=240+S(p)*z,b=z),x.font=z/2+'px a',x.fillText(i>5?'🔥':'⚧',a-z/5,b))z=600/(4+C(p=t-2.51*i));x.stroke()

Jan 14 2019 5:32 PM UTC

}// 136/140

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for u/katkip -- #pentagram #hailsatan

u/metamero

<3 satan <3
u/katkip

noo. . . . . . . why. . . . .. . i make cryses im crazy pls selfban
u/katkip

#satan
u/SockTaters

LOL

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