Dweets by u/andrea270872

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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andrea270872

remix of d/28279 by u/rodrigo.siqueira

function u(t) {

with(x)for(fillRect(0,0,w=2e3,i=w);i--;strokeRect(960-i/2,540-i/2,i*2,i))setLineDash([i,99,i]),strokeStyle=R(lineDashOffset=w+i*t,w)

Aug 13 2023 8:28 AM UTC

}// 132/140

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just playing around with the params and the shadows

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andrea270872

remix of d/28200 by u/KilledByAPixel

function u(t) {

for(i=850;t<3&&i--;x.fillRect(960+r*S(a=(i%2-.5)*t-9.5),960-i-99*C(a),9,3))r=350+99*S(i/139),x.fillStyle=R(i,i%99,i)

Aug 4 2023 12:59 PM UTC

}// 116/140

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rotate and draw only the front...

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andrea270872

remix of d/27492 by u/andrea270872

function u(t) {

for(c.width|=i=99;i--;)x.fillRect(i*20,1e3,20,-17*t%i*9)

May 6 2023 8:44 AM UTC

}// 56/140

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emerging... (wait for it... it gets periodic)

u/Volfegan

Looks like some kind of sort() in progress

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andrea270872

remix of d/27472 by u/Xen

function u(t) {

for(c.width|=i=99;i--;)x.fillRect(i*20,0,20,2e3/(S(t&i*i/9)+2))

May 6 2023 8:32 AM UTC

}// 63/140

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more "square" ...

u/Xen

nicely done!
u/andrea270872

thanks :)

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andrea270872

remix of d/27472 by u/Xen

function u(t) {

for(c.width|=i=99;i--;)x.fillRect(i*20,0,20,2e3/(S(t&i*i/9)+2))

May 6 2023 8:32 AM UTC

}// 63/140

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more "square" ...

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andrea270872

function u(t) {

c.width=1920
for(n=~~(t*39)%250;n--;)for(k=n+1;k--;~n&k?x.fillRect(n*7,k*7,7,7):0);

Jan 5 2023 11:23 AM UTC

}// 83/140

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pascal triangle mod 2 = sierpinski

u/andrea270872

according to Wolfram "The binomial coefficient (n over k) mod 2 can be computed using bitwise operations AND(NOT(n), k)"
u/andrea270872

https://mathworld.wolfram.com/SierpinskiSiev…
u/andrea270872

which is what I did here :)

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andrea270872

remix of d/24763 by u/KilledByAPixel

function u(t) {

t*=60
for(j=h=135;--j;)for(i=w=240;--i;)
x.fillRect(i+t%8*w,j+(t>>3)*h,1,S((99*i*j)/t%3))

Jan 14 2022 4:40 PM UTC

}// 89/140

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fiddling with the textures

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andrea270872

remix of d/24472 by u/XBagon

function u(t) {

r=Math.random
m=(r()*(r()-.5)+.5)*2e3
B=(x)=>(C(x*3.1)+1)/2
x.fillStyle=R(199+r()*50,t%1*99,0,.1)
x.fillRect(m,B(t)*1e3,B(t)*190,B(t)*190)

Dec 10 2021 4:34 PM UTC

}// 138/140

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changed the RGB to be more red-yellow: roaring fire

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andrea270872

function u(t) {

t?x.rotate(7):x.translate(99,99)
x.fillRect(55,55,4,4)

Nov 9 2021 6:44 PM UTC

}// 54/140

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#circlechallenge just for fun :)

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andrea270872

remix of d/23050 by u/andrea270872

function u(t) {

c.width|=f=n=>{x.fillStyle=R(250,K=S(t)**2*99+n/4,50);n>1?x.fillRect(500-n/2+S(n)*3,n-C(n)*3,n,n)+f(n-(5+t%3)**2):0}
f(256)

Jun 8 2021 9:54 AM UTC

}// 123/140

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