Dweets awesomed by u/richev

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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tomxor

remix of d/15553 by u/tomxor

function u(t) {

for(c.width=128,i=576;i-=1/16;x.fillRect(16*X,16*Y,Z,Z))
X=i%8,Y=i/128,
Z=1+C(5*S(Y+C(X*3))+5*S(X+S(Y*3))+t*4)**3/3

Aug 28 2019 3:34 PM UTC

}// 115/140

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#lava

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u/aleamb

awesome!
u/katkip

i thought it's perlin noise. gj
u/tomxor

Never heard of it :) time for a quote: "Absolute Ignorance is the artificer [...] in order to make a perfect and beautiful machine it is not necessary to know how to make it" - Robert Beverley MacKenzie, 1868 ... gona keep my monkey fingers typing, maybe I will learn something.
u/taupelink

excellent
u/username

so what did you use to implement this noise?
u/DataMeta

115 bytes, clearly :)
u/KilledByAPixel

👍

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taupelink

remix of d/15542 by u/taupelink

function u(t) {

x.globalAlpha=.7;r=Math.random;x.beginPath(x.fill(x.arc(r(x.fillStyle='#'+'FC96F93FF0'.substr(n=r()*8|0,3))*1920,r()*1080,9*n+60,n,n+3.14)))

Aug 27 2019 5:35 PM UTC

}// 140/140

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d/15543

u/DataMeta

Interesting method of #color selection
u/taupelink

Yeah, the substring color technique is not new. I first saw it at https://www.dwitter.net/d/14621
u/DataMeta

What is new is getting a nice palette of secondary/intermediate colors with it
u/taupelink

Gottit--thank you!

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atgz

remix of d/12304 by u/pavel

function u(t) {

for(c.width|=i=20;i--;x.rect(-r,-r,2*r,2*r))r=(i-3*t%2)*60,r*=r>0,x.setTransform(1,0,0,1,960,540),x.rotate(S(r/500)*t)
x.fill('evenodd')

Aug 27 2019 2:17 PM UTC

}// 136/140

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#glitch

u/atgz

the glitch is gone :(

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atgz

remix of d/15537 by u/atgz

function u(t) {

c.width|=q=2.9+.005**t;x.translate(960,540);for(i=0;i<329;i++)x.rotate(q+(i%22?0:q/2)),x.fillRect(a=(i/22+t)%16*45,a,w=a**.75,w)

Aug 27 2019 1:50 PM UTC

}// 128/140

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mildlybean

function u(t) {

R=C;onmousemove=e=>C[~~(e.x/4.4)*64]=1;for(c.width=128,m=8192;m--;n?R[m+1]?0:o<64-1?C[m]=0*(C[m+1]=1):0:0)x.fillRect(m/64|0,o=m%64,n=R[m],n)

Aug 27 2019 11:31 AM UTC

}// 140/140

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Move your mouse over the canvas. Also, try changing 64-1 to 64

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u/mildlybean

Sorry mobile users
u/katkip

awesome
u/metamero

so relaxing #interactive
u/katkip

It's like a City Builder
u/username

Why you use 64-1 instead of 63? 😂
u/tomxor

because that would only be 139 chars silly :P
u/atgz

138* :P

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mildlybean

function u(t) {

Z=(X,Y)=>S(X*Y/999+t*9)*9
c.width|=0;for(i=-64;++i<64;)for(j=-64;++j<64;x.fillRect(960+i*d,540-.7*(j+h)*d,3,3))d=3e3/(400+.7*(j-(h=Z(i,j))))

Aug 26 2019 1:51 PM UTC

}// 140/140

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It will graph any equation you put on the first line. Give it a try, I'd love to see your remixes!

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u/mildlybean

S((X*X+Y*Y)**.5/4-t*16)*16 is interesting
u/tomxor

Neat! #application , shameless plug to my old retro version: d/12669
u/tomxor

yours has a much nicer resolution: Z=(X,Y)=>S((X*X^Y*Y)**.1-t*8)*16
u/katkip

Z=(X,Y)=>S(X/9*C(t)+Y/9*S(t))*9 is cute
u/tomxor

moire: Z=(X,Y)=>t
u/katkip

Any formula has a moire actually
u/mildlybean

Especially (X+Y)%2==0?0:S(t*2)*50

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atgz

remix of d/10008 by u/atgz

function u(t) {

d=+t
for(i=700;i--;x.fillRect(960+(b=t*i--%1e3)*C(a+t),540+b*S(a+t),9,9))x.fillStyle=`hsla(${a=t*d*T(i/1e4)},99%,${i}%,.4`

Aug 26 2019 12:56 PM UTC

}// 122/140

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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

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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(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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rodrigo.siqueira

remix of d/14415 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
v=(a,b,Φ,r)=>{for(i=0;i++<r;)x.clearRect(a-=S(Φ),b-=C(Φ),s=r/9,s)
r>8&&v(a,b,Φ+S(t*i**9)/2,r*=.9)}
v(940,1e3,0,99)

Aug 14 2019 1:21 AM UTC

}// 138/140

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Tesla rays #organic

u/KilledByAPixel

Φ

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