Dweets awesomed by u/marmph

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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LimeLaser

function u(t) {

f=60*t|0
u=f/1080
v=1-u
w=(b,c,d)=>255*(3*v*v*u*b+3*v*u*u*c+u**3*d)
x.fillStyle=R(w(0,1,1),w(.7,1,0),w(1,0,0))
x.fillRect(0,f,2e3,1)

Apr 28 2024 4:35 AM UTC

}// 132/140

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Bezier Sunset Gradient

u/cantelope

"bezier" tho? 🤔
u/andrea270872

Perhaps the function w is based on a Bezier curve between 4 points?
u/andrea270872

(like they say here... https://javascript.info/bezier-curve )?
u/LimeLaser

Yeah, the w function should be a cubic Bezier evaluation, but I had to cut out the a*v**3 term to fit the character limit.

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LimeLaser

function u(t) {

x.globalAlpha=.02
x.fillRect(0,0,2e3,2e3)
f=60*t|0
n=t/3|0
for(i=1e3;i--;)
x.clearRect(960+960*S(n*f+101*i),540+540*S(n*f+n*i),2,2)

Feb 9 2024 5:22 AM UTC

}// 131/140

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A New Pattern Every 3 Seconds

u/Aeholbrook

love the slow burn

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LimeLaser

function u(t) {

c.width|=0
for(i=500;i--;){a=((2*t+i*i)%6.28/3.14-1)**3*3.14
b=S(i+t)/5
x.fillRect(960-2*i*(S(a)+b),540-i*(C(a)+b),8,8)}

Oct 30 2021 6:49 PM UTC

}// 120/140

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Whirlwind

u/marmph

breh

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LimeLaser

function u(t) {

f=(60*t|0)%1e3
x.fillStyle=`HSL(${f},99%,50%)`
x.fillRect(1.7*f,f,99,99)
x.translate(960,540)
x.rotate(0.1)
x.translate(-960,-540)

Sep 11 2021 6:23 AM UTC

}// 130/140

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Color Spiral

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LimeLaser

function u(t) {

r=Math.random
u=r(v=r())
if(u+v>1){u=1-u
v=1-v}
y=v=>255*v**.45
x.fillStyle=R(y(v),y(1-u-v),y(u))
x.fillRect(456+1e3*(u+v/2),1036-1e3*v,9,9)

Aug 26 2021 10:04 PM UTC

}// 140/140

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Uniform Random Sampling Within A Triangle

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rodrigo.siqueira

remix of d/23572 by u/rodrigo.siqueira

function u(t) {

for(Z=c.width=i=175;i--;)for(H=Z;H--;x.fillRect(i,H,1,1))Y=H/9-5,r=((X=i/10-9)*X+Y*Y+1-C(t*8))/Z,x.fillStyle=R(K=T(Y/r|X/r+t*Z)*Y+5/r,K/5)

Aug 17 2021 5:16 PM UTC

}// 138/140

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Spierpinski debris around a pulsating core #sierpinski

u/danny@hille.dk

Beautiful
u/danny@hille.dk

better resolution + performance for(I=new ImageData(c.width=w=175,w),i=w*w;i--;)Y=i/w/9-5,r=((X=(i%w)/10-9)*X+Y*Y+1-C(t*3))/w,I.data.set([K=T(Y/r|X/r+t*25)*Y+16/r,K/6,,255],i*4);x.putImageData(I,0,0)
u/jellyedwards

Wow!

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LimeLaser

function u(t) {

for(i=540;i--;){x.fillStyle=`HSL(${2*(i+t)},99%,75%)`
x.fillRect(960+C(t/2+i/31)*i,540+S(t/5+i/31)*i,4,4)}

Aug 9 2021 5:45 AM UTC

}// 106/140

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Rotating Colors

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LimeLaser

function u(t) {

m="-.. .-- .. - - . .-." // DWITTER
r="replaceAll"
x.fillStyle=m[r]("-","xx ")[r](".","x ")[2*t|0]=="x"?"#fff":R()
x.fillRect(0,0,2e3,2e3)

Aug 9 2021 12:04 AM UTC

}// 138/140

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Morse Code Blinking (with customizable message)

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LimeLaser

function u(t) {

for(i=2304;i--;){y=i*t%256
b=i%192-95
r=i%256-127
x.fillStyle=R(y+1.475*r,y-.165*b-.572*r,y+1.881*b)
x.fillRect(i%64*30,(i/64|0)*30,30,30)}

Aug 7 2021 7:14 AM UTC

}// 139/140

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Approximate YCbCr BT.2020 Color Conversion Test

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KilledByAPixel

remix of d/23103 by u/KilledByAPixel

function u(t) {

for(w=c.width&=j=10368;F=b=j--/1e4;x.fillRect(j%w,j>>7,F,X=Y=R=T=1))for(a=1-j%w/64;++R<w;Y+=b)X-=64-(X+R+t*9&R)%w/2<Y?(F=1-R/w/T++,a=b=-1):a

Jun 19 2021 6:24 PM UTC

}// 140/140

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Sierpiński Mountains ⛰️

Show more comments…
u/katkip

WOAH
u/Xen

epic
u/magna

Epic, in many ways...
u/DaSpider

Are you doing this full time? How did you manage to monetize your dweets? ;)
u/aleamb

superb! #sierpinski #landscape #mountains
u/donbright

how in the heck
u/vain

ufff... O.o Your coding skills are not from this world...

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