Top 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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Current theme challenge: #Food

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katkip

function u(t) {

q=frame;f=x=>Math.random()-.5;x.fillStyle=`hsl(${f()*360} 99%50%)`,x.fillRect(960,540,f()*200,f()*200);x.drawImage(c,f()*200,f()*200)

Apr 11 2019 4:30 PM UTC

}// 133/140

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katkip

remix of d/12983 by u/katkip

function u(t) {

f=x=>250+C(x-x*8e5+t*.5)*S(t+S(t)*2)*259;c.width^=0;for(i=999;i--;)
x.fillStyle=R(0,s=f(i)),x.fillRect(950+C(i)*s,540+S(i)*s,9,9)

Apr 4 2019 11:43 AM UTC

}// 129/140

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demo of 8e5

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katkip

function u(t) {

r=Math.round;t||(X=Y=0);for(i=99;i--;)x.fillRect(960+X*10,540+Y*10,10,10),X+=r(C(Y+t)*2),Y+=r(S(X-t)*2)

Mar 29 2019 2:35 PM UTC

}// 103/140

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katkip

function u(t) {

t||(K=X=Y=0);for(i=999;i--;)x.fillRect(960+S(Y/6)*(200-X),540+C(Y/6)*(200-X),2,2),X+=C(Y*20),Y+=S(X/(K/99+99))*99,K++

Mar 24 2019 2:36 PM UTC

}// 117/140

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Magic donut #attractor

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katkip

function u(t) {

c.width^=0;t||(α=β=0);x.font='9cm"';x.fillText(α*2,0,600);for(i=20;i--;)β++,S(β-α)<C(α*β)?α+=1/(β*β):α-=1/(β*β);

Mar 24 2019 2:21 PM UTC

}// 112/140

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Approximating 1

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katkip

function u(t) {

t||(d=0);d++;
for(i=d;i--;)x.fillRect(960+C(6.28*i/d+t*d/699)*(t*99+29),540+S(6.28*i/d+t*d/699)*(29+t*99),5,5)

Feb 20 2019 7:34 PM UTC

}// 110/140

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#moire

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katkip

function u(t) {

t||(a=b=1);for(k=99;k--;)a+=S(b),b+=S(a-S(a-b+t*b*a)/999),x.fillRect(960+a*20,540+b*20,5,5)

Feb 14 2019 6:47 PM UTC

}// 91/140

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How to draw pefect puzzle pieces with attractors #attractor #math formula. Attractors are beautiful! <3

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katkip

function u(t) {

t||(a=b=1);for(i=999;i--;)a+=S(b*C(t)+1),b+=C(a-S(b-a)),x.fillRect(60+a*500,1340+b*500,2,2)

Feb 14 2019 6:30 PM UTC

}// 91/140

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Black hole and white hole #attractor and now the space-time tranfer is visible

u/katkip

b+=C(a-C(b+a)/2) is interesting too
u/tomxor

I've never played with attractors, they are so simple and pretty :)
u/katkip

Exactly

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katkip

remix of d/12348 by u/katkip

function u(t) {

t||(a=b=5);for(i=99;i--;)a+=S(a+C(b+S(a-C(a)))),b+=C(b+C(a-S(t*2)+C(b))),x.fillRect(t*99,C(b)*540+540,5,5);x.globalAlpha=.1

Feb 14 2019 6:25 PM UTC

}// 123/140

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Math nails with attractor formulas

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katkip

function u(t) {

t||(a=b=1);for(i=99;i--;)a+=S(b-S(b+t/99)),b+=C(a-C(a)),x.fillRect(a*800-300,540+b*200,5,5),x.globalAlpha=.1

Feb 14 2019 4:19 PM UTC

}// 108/140

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Jellyfish #attractor! The shape of Adrian Bejan's constructal laws, shape of life. 108b #waitforit #slowrender

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