Dweets by u/katkip

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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katkip

function u(t) {

c.width*=1;t*=t/4;for(i=96;i--;)x.fillRect(i*20,540+S(t+i/6)*300+S(i/3+t)*150+S(i/1.5+t)*75+S(i/.75+t)*37.5+S(i/.375+t)*18.75,20,50)

Jan 9 2019 8:50 AM UTC

}// 132/140

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Fourier Series speeding up #math

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katkip

remix of d/11632 by u/Undefined

function u(t) {

t||x.translate(960,540);for(i=360;i--;x.fillStyle=`hsl(${C(frame/9)*S(i/9)*99*t} 99%50%)`)x.fillRect(i*4,0,4,9);x.rotate(.004)

Jan 4 2019 1:18 PM UTC

}// 126/140

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katkip

remix of d/11624 by u/metamero

function u(t) {

t||x.translate(960,540);for(i=360;i--;x.fillStyle=`hsl(${frame} 99%50%)`)x.fillRect(i*6,9,9,9);x.drawImage(c,0,1);x.rotate(C(t/15)/50+3.14)

Jan 3 2019 1:34 PM UTC

}// 139/140

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Pretty old method but...

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katkip

remix of d/11620 by u/f8f82804

function u(t) {

for(i=c.width*=1;i--;Z<1.6&&x.fillRect(960+900*X,540+800*Y/S(t/9),s=9+(9-Z),s)){ϕ=i/600;θ=i-t/5+ϕ*4.5;X=S(θ*3+i)*S(ϕ);Y=C(ϕ);Z=C(θ)*ϕ+2;}

Jan 3 2019 1:11 PM UTC

}// 137/140

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katkip

remix of d/11621 by u/metamero

function u(t) {

for(i=720;i--;x.fillStyle=`hsl(${frame*S(i+C(frame&i)*frame/i)},100%,50%)`)x.fillRect(i*3,0,3,9);x.drawImage(c,0,9)

Jan 3 2019 1:06 PM UTC

}// 115/140

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thanos

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katkip

function u(t) {

// HAPPY NEW YEAR
c.width^=0;x.font='20em"';for(i=10;i--;)x.fillText(`🎆🎇🎆🎇🎆🎇🎆`,-99+S(t*3+i*i)*99,100+i*200)

Dec 31 2018 10:22 PM UTC

}// 107/140

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katkip

function u(t) {

eval(unescape(escape`挮睩摴桞㴰㭲㴨堬夬猩㴾筩昨猾㈩砮晩汬剥捴⡘ⱙⱳ⨲ⱳ⨲⤬爨堭猬夭猬猯㈩Ⱳ⡘⵳ⱙ⭳ⱳ⼲⤬爨堫猬夭猬猯㈩Ⱳ⡘⭳ⱙ⭳ⱳ⼲⥽㭸⹧汯扡汁汰桡㴮㔫䌨琪㈩⨮㌬爨㤶〬㔴〫䌨琩⨴㈰ⰴ㠰⤻`.replace(/u(..)/g,"$1%")))

Dec 31 2018 12:15 PM UTC

}// 131/140

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#infinite #sierpinski #recursion #layers #levels #grayscale #fractal #recursive

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katkip

function u(t) {

r=(X,Y,s)=>{if(s>2)x.beginPath(),x.arc(X,Y,s*2,0,7),x.stroke(),r(X-s*2,Y,s/2),r(X+s*2,Y,s/2)}
r(960,540,230)

Dec 31 2018 12:02 PM UTC

}// 108/140

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only 108 bytes #recursion #recusive #circle #arc #fractal

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katkip

function u(t) {

r=(X,Y,s)=>{if(s>1)x.beginPath(),x.arc(X,Y,s*2,0,7),x.stroke(),r(X-s,Y,s/2),r(X+s,Y,s/2)}
r(960,540,480)

Dec 31 2018 11:56 AM UTC

}// 104/140

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#recursive circles #recursion #circle #arc #fractal

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katkip

remix of d/11595 by u/katkip

function u(t) {

eval(unescape(escape`挮獴祬攮扡捫杲潵湤㵒⠩Ⱳ㴨堬夬猩㴾筩昨猾㌩砮晩汬却祬攽恨獬⠤筳⩴紬㤰┬㐰┩怬砮晩汬剥捴⡘⵳ⱙ⵳ⱳ⨲ⱳ⨲⤬爨堭猬夭猬猯㈩Ⱳ⡘⵳ⱙ⭳ⱳ⼲⤬爨堫猬夭猬猯㈩Ⱳ⡘⭳ⱙ⭳ⱳ⼲⥽㭲⠹㘰ⰵ㐰ⰴ㠰⤻`.replace(/u(..)/g,"$1%")))

Dec 31 2018 11:36 AM UTC

}// 138/140

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T-square #fractal #recursion #recursive #rainbow

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