Top dweets by u/hamptonio

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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hamptonio

remix of d/134 by u/icecuber

function u(t) {

r=Math.random;q=1;for(i=36;i--;)for(j=12;j--;)q+=.5-r()/2,x.setTransform(C(t+j),S(t+i),-S(t+j),C(t+i),i*66,j*99),x.fillRect(-9,-30,q/2,10)

Feb 25 2017 4:06 AM UTC

}// 138/140

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u/magna

I want a curtain like this in my living room!
u/joeytwiddle

That took me to http://www.pouet.net/prod.php?which=564#fukw…

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hamptonio

remix of d/123 by u/icecuber

function u(t) {

t?i++:i=0;for(j=1e3;j--;){a=b=0;k=256;for(;k--&&a*a+b*b<4;)c=a*a-b*b+i/1e4,b=2*a*b+j/1e4+.6,a=c;x.fillRect(i,j,1,S(k))}

Feb 26 2017 9:48 PM UTC

}// 119/140

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u/iverjo

Worth the wait
u/hamptonio

Yeah its pretty damn slow.
u/KHymatim

Mmmmm
u/iverjo

#fractal

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hamptonio

function u(t) {

r=540;m=t%99|0;for(n=1;n<m;n++){c.width=2e3;for(i=0;i<6.3*n;i+=.01){q=r*C(i*m/n);x.lineTo(2*r+C(i)*q,r+S(i)*q)}x.fill("evenodd");x.stroke()}

Mar 3 2017 6:12 PM UTC

}// 140/140

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u/iverjo

Kudos!
u/donbright

excellent

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hamptonio

function u(t) {

s=t*9%32|0;for(i=0;i<6.3;i+=.001){k=16-s;q=s%2*255;x.fillStyle=R(q,0,s*8);x.fillRect(960+29*(k*C(i)+C(k*i)-k),540+29*(k*S(i)-S(k*i)),1,1);}

Feb 27 2017 5:26 AM UTC

}// 139/140

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Hypocycloids and epicycloids.

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hamptonio

remix of d/1203 by u/vegolasse

function u(t) {

q=43;function a(r){x.arc(q+S(r/3)*400,q+S(r/2)*730,i,0,6.283);x.closePath()}c.width=q*q;for(i=0;i<q*q;i+=9){a(t);a(S(t))};x.fill("evenodd")

Feb 25 2017 1:10 AM UTC

}// 140/140

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seems like that evenodd method could do some other cool shit

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hamptonio

function u(t) {

c.width=1920;for(i=0;i<t;i+=.005){x.lineTo(960+300*(2+C(3*(i+t)))*C(i+t+S(i*t)),540+180*(2+S(3*(i+t)+S(i)))*C(i+t+S(t)+S(i)));};x.stroke()

Feb 25 2017 5:18 AM UTC

}// 138/140

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hamptonio

remix of d/1830 by u/hamptonio

function u(t) {

w=c.width=1920;for(i=w;i--;){q=0;a=1;b=1;e=1+9*t%9;for(j=99;j--;){q+=a*C(b*(i-w/2)/100);a/=2;b*=e};x.lineTo(i,200*(2.5-q));x.stroke()}

Mar 3 2017 3:48 PM UTC

}// 135/140

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Animation of Weierstrass's 1872 example of a continuous function that becomes nowhere-differentiable when b>=7.

u/donbright

very interesting!!!! always felt like demoscene is a gateway to math

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hamptonio

remix of d/601 by u/ose

function u(t) {

q=function(a){return (C(a)+1)*99};
for(i=-100;i<99;i++){
x.fillStyle=R(q(2*t+i),q(t*i),q(i+t),.01);
x.fillRect(i*40+q(t),6*q(t)-i,99,99);
}

Feb 25 2017 7:04 PM UTC

}// 139/140

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hamptonio

remix of d/1301 by u/walsh9

function u(t) {

r=Math.random,T=t*60|0,d=T%64*36,e=(T>>6)*36,s=r()>.5&&e>1,f=s?8:36,g=s?36:8,x.fillRect(d,e,f,g),x.strokeRect(0,0,1920,1080)

Feb 25 2017 4:24 PM UTC

}// 124/140

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Shortened it some without losing too much I think, not sure what to do with the extra room though.

u/sfz

write a maze solver :D

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hamptonio

function u(t) {

t?i++:i=0;q=0;a=1;b=1;for(j=99;j--;){q+=a*C(b*i/100);a*=.6;b*=8};x.lineTo(i,250*(2+q));x.stroke()

Mar 3 2017 3:31 PM UTC

}// 97/140

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From 1872, Weierstrass's first example of a continuous but nowhere-differentiable function.

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