Dweets awesomed by u/zungl

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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KilledByAPixel

function u(t) {

for(x.fillStyle=R(T=Math.random(x.fillRect(0,0,z=i=2e3,z))<.995?T-9:300,T,T>9?T:30,.1);i--;x.clearRect(S(i*i)*z+Y/9,Y,i%3,-20))Y=(z+i)/2*t%z

Sep 7 2020 4:35 PM UTC

}// 140/140

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Thunder #Storm ⛈️

u/taupelink

nice!
u/taupelink

more than "nice"...this is fantastic
u/KilledByAPixel

thank you, still working on lighting ;)
u/katkip

waa
u/Xen

nicely done

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rodrigo.siqueira

remix of d/17542 by u/KilledByAPixel

function u(t) {

for(c.width|=s=6,k=720;j=k%4,i=k--/4;s/=.99,x.fillStyle=`hsl(${n*j} 70%${n%9<5?0:50}%`)n=i+t*60,x.fillRect(900+C(j+t+i/99)*s,k+S(t+j)*s,i,i)

Feb 10 2020 2:23 PM UTC

}// 140/140

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The color #tentacle

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veubeke

function u(t) {

c.width^=0
for(i=3;i--;)
$=i<2,s=16+$*(S(t/2)*(10-i*20)),x.font=s+'em"',
x.fillText(['🌷','🌻','🌧️'][i],1260-600*($?i:C(t/2)<0)-8*s,$?900:400)

Feb 10 2020 12:49 PM UTC

}// 140/140

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#growth

u/tomxor

#cute :D

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@no_identd

remix of d/17539 by u/@no_identd

function u(t) {

v=45
for(l=499;l--;)d=(l*t/9)%v*v,x.fillStyle=`hsl(${t*l-l+d},80%,65%)`,x.fillRect(960+S(r=S(t-1/d)+l)*d,0+C(r)*d,v,v)

Feb 9 2020 9:37 PM UTC

}// 118/140

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Computer, remove unnecessary numbers and zoom in on the lower half of the image

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@no_identd

remix of d/6349 by u/@no_identd

function u(t) {

v=23
for(l=499;l--;)d=(l*t/9)%v*v,x.fillStyle=`hsl(${t*l-l+d},99%,65%)`,x.fillRect(960+S(r=S(t-1/d/0.8537972)+l*1.3324789)*d,540+C(r)*d,v,v)

Feb 9 2020 9:12 PM UTC

}// 140/140

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I have improved the hypnosis spiral. Pray that I don't improve it further.

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New_Core

function u(t) {

t?0:a=[]
for(i=9;i--;)a.push(~~(Math.random()*300)),x.fillRect(960+(b=99+(a.filter(i=>i===(d=a[a.length-1])).length)*9)*S(d),540+b*C(d),9,9)

Feb 9 2020 8:47 PM UTC

}// 140/140

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#growth

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pavel

function u(t) {

for(x.globalAlpha=.01,x.fillRect(p=2.1,q=C(t%p+p),i=2e3,i);i--;x.clearRect(960+f(C),640+f(S),9,9))f=g=>400*(i?-q:.5/q)*g(t+1.57)+i*S(i)*g(t)

Feb 9 2020 8:25 PM UTC

}// 140/140

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Geometric Algebra - Point on a triangle and its dual line

u/pavel

Inspired by https://youtu.be/tX4H_ctggYo?t=2362
u/pavel

Yikes this lags on my phone bad
u/Qwitter

Legendred!

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tomxor

function u(t) {

R?w=128:c.width=w
for(T=S,S=C,C=T,n=0,i=2e4;j=--i/w|i%w*w;n+=~S[i+5]-~S[i-6])x.fillRect(i%w,j%w,R=frame&1,C[j]=R?n>33&n<59?n<46|C[j]:j&!t:n)

Feb 9 2020 1:38 PM UTC

}// 140/140

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#LargerThanLife #Automata Bugs Rule

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u/tomxor

The Larger Than Life "Bugs" rule R5,C0,M1,S34..58,B34..45,NM. You can introduce more entropy by adding spaces to the code (to restart) which causes i&1 to be combined with existing state in the rule's dead space.
u/tomxor

This uses a sliding window to efficiently compute the sum of arbitrary radi Moore neighbourhoods (i.e box blur kernels). It naturally wraps to the next line giving it a kind of twisted toroidal space, which takes less code and is more efficient since it is only necessary to initialise the sliding window once per dimension: O(2n+2r). The FPS is half of what is displayed since every other frame is used to sum the transposed sum of x.
u/tomxor

Other sized w must be a power of 2 and i must be at least w**2+r+1 (r=neighbourhood radius) to allow the sliding window to correctly initialise, otherwise a bad sum will propagate throughout the grid usually causing everything to die.
u/KilledByAPixel

👍 Thanks for the explanation!
u/tomxor

hmm the larger than necessary i seems to be introducing artifacts... change to i=w*w+6 if you want to see the pure rule.
u/katkip

Woow! I remember it from the The Powder Toy game

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angelnm

function u(t) {

w=40
z=(x)=>Math.floor(x/48)*w
f=(x)=>(z(i)+x)%255
for(i=0;i<1296;i++)
x.fillStyle=R(f(0),0,f(128)),
x.fillRect(i%48*w,z(i)+C(i+10*t)*9,w,w)

Feb 9 2020 1:43 AM UTC

}// 140/140

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kaideno

function u(t) {

for(a=b=i=2e4;i--;x.fillRect(960+99*a,540+99*b,.1,1))r=Math.random(),[a,b]=r>.5?[S(b)*8,C(a*b+t)*5]:[S(b/3)*5,a/3]
x.fillStyle=R(b*60*(i%3))

Feb 7 2020 6:29 PM UTC

}// 140/140

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is this cool

u/13thptr

no it's not . you literally copied someone else's dweet. try harder next time.
u/katkip

reported
u/lionleaf

To remix other dweets, just edit the dweet directly and you get an option to "post as remix". That way you credit the original author

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