Dweets awesomed by u/mildlybean

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: #Opposites

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mildlybean

function u(t) {

for(c.width+=j=0;10>j;j+=2.094)for(i=30;i--;)x.moveTo(n=960+S(t+j)*(g=S(t)*600),m=540+C(t+j)*g),x.arc(n,m,18*i,0,7);x.lineWidth=9;x.stroke()

Aug 23 2019 12:49 AM UTC

}// 140/140

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I spent hours on this one #moire

u/katkip

interesting

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mildlybean

function u(t) {

c.width+=0;for(i=-64;++i<65;)for(j=-64;++j<65;)x.fillStyle='#03F',x.fillRect(i*S(t)*8.4+j*C(t)*8.4+960,(i^j)*8.4+540,5,5)//first dweet <140!

Aug 22 2019 5:27 PM UTC

}// 140/140

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Plot of XOR function

u/taupelink

very cool!
u/katkip

WOW
u/KilledByAPixel

👍
u/django

really cool, welcome to dwitter!

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jlidbeck

function u(t) {

r=180;s=360;a=11.75
for(i=1;i<120;++i){
t+=t
x.fillStyle='#002a'
x.fillRect(
960+2*r*C(t)+s*C(a*t),
540+r*S(t)+s*S(a*t),1,2)}

Aug 22 2019 4:12 AM UTC

}// 125/140

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Xen

remix of d/15455 by u/mildlybean

function u(t) {

v=b=k=n=.9+C(t)/9;for(c.width|=i=1e3;i--;)x.fillRect(960+(q=S(e=t*v+i*b)*(y=(i*k)**n)),540+(w=C(e)*y),r=(q**2+w**2)**.5*.09+7,r)

Aug 21 2019 12:13 AM UTC

}// 128/140

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Had to play

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Benjiji

function u(t) {

c.width^=0
N=999*S(t/10)
for(i=0;i<N;)Z=2*i/N-1,Y=S(i*0.2)*Z*0.3,X=C(i++*0.2)*Z+Y*C(0.7),Y=Z+Y*S(0.7),x.fillRect(X*300+960,-Y*300+540,15,5)

Aug 19 2019 9:18 PM UTC

}// 139/140

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#hourglass #runningtime

Show more comments…
u/Benjiji

Did not find a way to get it to start over more quickly in 140...
u/13thptr

Multiplying by 0.2 is equivalent to dividing by 5 (gain 2 bytes each time) and cos(0.7rad) is roughly 0.76 which can be written .76
u/13thptr

also moving c.width^=0 to the first part of the for loop saves 2 bytes
u/13thptr

123 : N=999*S(t/10) for(c.width^=i=0;i<N;)Z=2*i/N-1,Y=S(i/5)*Z*.3,X=C(i++/5)*Z+Y*.76,Y=Z+Y*.64,x.fillRect(X*300+960,-Y*300+540,15,5)
u/13thptr

*126: N=999*S(t/10);for(c.width^=i=0;i<N;)Z=2*i/N-1,Y=S(i/5)*Z*.3,X=C(i++/5)*Z+Y*.76,Y=Z+Y*.64,x.fillRect(X*300+960,-Y*300+540,15,5)
u/Benjiji

Nice, thx!
u/atgz

you can also use .7 instead of 0.7, might come in handy next time

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mildlybean

function u(t) {

for(c.width+=y=0;y++<3;)for(i=-1;i++<39;){h=(i+1)*6.5;x.fillStyle=R(h,255-h,y*50);x.fillRect((n=i*99+S(t)*999)-999,S(n/99)*99+y*250,50,200)}

Aug 19 2019 1:15 PM UTC

}// 140/140

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Here's a simple one

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mildlybean

function u(t) {

v=1,b=9,k=2,n=1.1,m=.05,l=7;for(c.width+=i=0;i++<999;){x.fillRect(960+(q=S(e=t*v+i*b)*(y=(i*k)**n)),540+(w=C(e)*y),r=(q**2+w**2)**.5*m+l,r)}

Aug 19 2019 12:12 PM UTC

}// 140/140

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Try v=-.5, b=t/100 for something way more interesting

u/Xen

nice!

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mildlybean

function u(t) {

for(i=0;999>i++;){h=Math.random(),w=Math.random(),e=h*6-t;x.fillStyle=R(S(e)*(q=255),S(e-2)*q,S(e-4)*q);x.fillRect(w*1920,h*999,9,9*S(w*9))}

Aug 18 2019 9:48 PM UTC

}// 140/140

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I ran out of characters. But this is cool... i guess

u/13thptr

you can remove the brackets of the for loop, doing for(i=999;i--;) is 1 byte shorter over your approach and 1920 can be approximated with 2e3
u/mildlybean

thanks, ill keep that in mind for future dweets

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mildlybean

function u(t) {

v=01,b=99,n=99;for(c.width+=i=0;i<999;){x.fillRect(960+S(i++*v)*650*S(S(i*n)+t),540+S(i*b)*540,15,15);x.fillStyle=R(S(i)*255,127,S(-i)*255)}

Aug 17 2019 7:24 PM UTC

}// 140/140

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Have fun messing about with v, b and n!

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katkip

remix of d/15324 by u/KilledByAPixel

function u(t) {

for(c.width|=i=4;i--;)for(k=99,j=9;k--;)x.arc(960,540,j*3,a=S(C(S(j/9-t*9))/9+S(i)/k+S(t)/9)*k/2,a),j+=2
x.rect(0,0,2e3,2e3)
x.fill`evenodd`

Aug 8 2019 2:35 PM UTC

}// 140/140

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u/joeytwiddle

Pretty crazy how it is drawing itself

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