Top dweets by u/pavel

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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pavel

remix of d/10516 by u/pavel

function u(t) {

c.width^=t?onmousemove=e=>X=e.x/99:X=0
for(i=99;i--;x.lineTo(960+a*S(p)/.7,540+(i&4?a:-a)))a=960/(3+C(p=(i-(i>>2))*6.28/(t&7)-X))
x.stroke()

Oct 17 2018 7:06 PM UTC

}// 140/140

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#minimal #perspective #d3 #cube #interactive

u/aleamb

awesome!

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pavel

remix of d/10512 by u/f8f82804

function u(t) {

c.width^=t?onmousemove=e=>X=e.x/99:X=0
for(i=17;i--;x.lineTo(960+a*S(p)/.7,540+(i&4?a:-a)))a=960/(3+C(p=1.57*(i-(i>>2))-X))
x.stroke()

Oct 17 2018 4:40 AM UTC

}// 134/140

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#minimal #perspective #d3 #cube #interactive

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pavel

remix of d/20267 by u/yonatan

function u(t) {

for(m=[i=c.width|=X=Y=0];j=i--/69;)m[i]=[j/5,X-=C(a=j+t<<j+t),Y+=S(a),R(i/8)];for([d,X,Y,x.fillStyle]of m)x.fillRect(960+X*d,540+Y*d,d*=9,d)

Oct 15 2020 7:02 PM UTC

}// 140/140

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#improved with color and depth

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pavel

remix of d/13711 by u/pavel

function u(t) {

for(let i=c.width|=f=g=>2*g(2*j/3)+g(-j/3);i--;x.fillText(i*i,960*(z+h(S))/z,540+960*f(C)/z))h=g=>S(j=i/130+5*t)*g(t)+f(S)*g(t+1.6),z=7-h(C)

Mar 8 2020 9:20 PM UTC

}// 140/140

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#trefoil ribbon

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pavel

remix of d/14846 by u/KilledByAPixel

function u(t) {

r=_=>Math.random();(frame-1)%600?0:d=r(m=r(c.width=960))
f=g=>260*((1-m)*g(a=8*t)+d*m*g(a-a/m))
x.lineTo(480+f(C),270+f(S));x.stroke()

Jul 1 2019 7:54 AM UTC

}// 134/140

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#spirograph generator

u/pavel

I believe this generates all valid spirographs, at least the circle with a small pencil hole rolling in a circle ones.
u/pavel

The incremental drawing is not parameter aware so at the extremes its too slow / too fast and choppy
u/pavel

I was gonna improve this by using the period of a spirograph but gave up deriving it.
u/pavel

I think the period is the denominator of 1-1/m expressed as an irreducible fraction.

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pavel

remix of d/14305 by u/robbyg

function u(t) {

r=(t&&2+r)**.5;throw p=t?2*p/r:2

May 31 2019 3:19 AM UTC

}// 32/140

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Calculating #pi based on Viète's formula

u/pavel

Converges pretty quickly

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pavel

function u(t) {

for(i=c.width|=0,s=120;Y=--i>>4;x.fillRect(0,-60,s,s))x.setTransform(1,0,C(o=(S(e=S(d=S(b=S(t-=44)+t)+b)+d)+e)/4+.78)/4,S(o),i%16*s,s*Y-60)

May 18 2019 5:22 AM UTC

}// 139/140

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pavel

function u(t) {

with(x)font='17em"',fillStyle=`hsl(${99*t},69%,50%`,clearRect(!fillText(u,0,200),!drawImage(c,0,i=7*t%1*216,2e3,8,8,320+2*i,4e3,16),2e3,300)

May 12 2019 5:31 AM UTC

}// 140/140

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Funky function

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pavel

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼👦🐨𦐬𦠬𫠬𪠽𫠦𙠴𛁺👚𚰱𛁲🐲𚠪𛑮𚐽🡻𬰽𞐯𮠯𮠻𩡯𬠨𮀮𩡩𫁬𤡥𨱴𚀹𝠰𚠨𮠫𪐯𞀭𜐩𛱺𛑳𛰲𛀵𝀰𚰹𝠰𚡙𛱺𛁳𛁳𚐻𪠭𛐻𚑦𚁙𚱲𚡓𚁡👓𚁴𚐫𜐱𚡪𚐬𦠫𬠪𠰨𨐩𛁮𛐱𚑽𞱸𛡧𫁯𨡡𫁁𫁰𪁡🐮𝐻𩡯𬠨𪐽𜐶𞱩𛐭𞰩𩠨𜀬𜀬𝀩`.replace(/u../g,'')))

May 11 2019 7:42 AM UTC

}// 134/140

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182 c.width|=f=(Y,Z,n,j=n&&4,z=Z+1,r=2**-n)=>{s=9/z/z;for(x.fillRect(960*(z+i/8-1)/z-s/2,540+960*Y/z,s,s);j--;)f(Y+r*S(a=S(t)+11*j),Z+r*C(a),n-1)};x.globalAlpha=.5;for(i=16;i--;)f(0,0,4)

u/pavel

Wanted to make a 3d lattice with perspective
u/joeytwiddle

Didn't you already achieve that in d/13728 ?
u/pavel

Different method of generating a 3d lattice that rotates. Why is rotation so simple in this form?

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pavel

remix of d/12669 by u/tomxor

function u(t) {

for(c.width=i=512;i-=1/8;x.fillRect(16*(X*2+Y+16),16*(X/2-Y+Z+9),6,9))X=i%8-4,Y=i/64-4,Z=S((X*X+Y*Y)/3+t),x.fillStyle=`hsl(${Z*99} 99% 50%`

Mar 7 2019 8:14 PM UTC

}// 139/140

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