Dweets awesomed by u/Lazy1337

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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geb

function u(t) {

for(k=0;k<999;k++){a=h=t/8-2;b=i=k/480-9/8
for(n=0;a*a+b*b<4&&n<64;n++)q=a,a=a*a-b*b+h,b=2*q*b+i
x.fillStyle=R(2**n);x.fillRect(t*64,k,k,2)}

Jul 24 2018 11:58 AM UTC

}// 140/140

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u/DataMeta

Niiiiice! #fractal
u/zanella

#mandelbrot
u/zanella

#mandelbrot
u/Xen

Very Nice Style
u/aleamb

#fractal
u/joeytwiddle

Nice #mandelbrot #fractal
u/katkip

Noyce.

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Xen

remix of d/8917 by u/Agnes

function u(t) {

with(x)for(c.width|=j=456;j--;fill(arc(960+r*50*S(a=.314*(j%20))+50*S(M=t*S(t-j/500)),540+50*r*C(a)+50*C(M),r,t*M,7)))beginPath(r=~~(j/23))

Jul 23 2018 2:58 PM UTC

}// 139/140

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bit of a play, Shoutz 2 Agnes

u/username

#music

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keithclark

remix of d/8806 by u/keithclark

function u(t) {

for(Z=L=52,c.width=L*4;Q=Z--/9;)for(Y=X=L;X>-L;x.fillRect(X--/Q*9+99,L+U/Q,9/Q,L))Y+=7*C(X/2^Q*2+t*9),x.fillStyle=R(U=Y<L?Y:L,Q*L+U,U/L<<8)

Jul 9 2018 10:15 PM UTC

}// 139/140

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Managed to create a flat sea. Had to trade off the nice distance fog effect.

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u/joeytwiddle

Awesome infinite #landscape
u/lionleaf

Amazing!
u/jylikangas

Love it! Well done!
u/iverjo

Wow!
u/lionleaf

#minecraft
u/zanella

Replace Y<L?Y:L with Y and you'll understand how the flat sea effect was achieved. Nice one. ;)
u/Conjuror

love it
u/vain

OMG - really hot shit :D

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nabbydude

function u(t) {

x.fillStyle=R(a=255-x.getImageData(...P).data[0])
x.fillRect(...P)
d+=(!a||-1)+4
d%=4
P[d%2]+=(d<2||-1)+h*2
P[d%2]%=h*2}P=[h=540,h,1,1]
{d=0

Jul 4 2018 5:26 PM UTC

}// 140/140

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Smallest I could pack Langston's ant

u/micahcowan

Ha. Is it kosher to break out of the function definition body like that? Seems like something u/lionleaf might have on his "to remove" list. :)

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fujimotos

function u(t) {

c.width=320
for(j=12;j--;)for(i=90;i--;)
x.fillStyle=`hsla(99,${i}%,${i}%,.9`,
x.fillRect(S(t+i/30+S(j))*20+20*j,S(t*5+i/10)+i*2,i/2,i/2)

Jul 4 2018 1:09 PM UTC

}// 137/140

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Weird Plants

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keithclark

remix of d/8799 by u/keithclark

function u(t) {

for(c.width=240,Z=5;Z>0;Z-=.1)for(Y=X=-60;X<60;x.fillRect(120+X++/Z*9,45-Y/Z,1/Z*24-Z,99))x.fillStyle=R(Y-=7*C(X*.4^Z+t*6),Z*50-Y,-Y/87<<8)

Jul 3 2018 11:50 PM UTC

}// 139/140

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This one has water - not flat unfortunately. Had to trade off the pseudo-shading to fit the colour change int

u/zanella

OH MY GOD! I stayed out of Dwitter for a couple of days, and suddenly it has become Shader Toy! :)
u/hollo47

This is so good! #landscape
u/sigveseb

with water! #water
u/Cloud

WOOOOOOOOOOOOOOOOOOOOOOOW!!!!
u/rep_movsd

Underrated AF

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keithclark

function u(t) {

for(c.width=240,Z=5;Z>0;Z-=.1)for(Y=X=-60;X<60;x.fillRect(120+X++/Z*9,45-Y/Z,1/Z*24-Z,99))I=C(X*.4^Z+t*6),Y+=7*I,x.fillStyle=R(Z*50-Y*I/3)

Jul 3 2018 4:27 PM UTC

}// 138/140

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I'm working on a version with green mountains and water but I need to shave a few bytes of this one first. Suggestions welcome

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u/alien

wow very nice
u/alien

is this what they call raymarching?
u/aleamb

yeeeeeeeeeeeeeeeeeeahh awesomeee!
u/aleamb

#3d #landscape #awesome
u/Agnes

Both 240, 120 and 60 are multiples of 60 so I think you can lose bytes by making 60 a constant... somehow. Right?
u/keithclark

@alien - no raymarching here. This is a cos() generated waveform, drawn from back to front.

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firegodjr

remix of d/8775 by u/yokljo

function u(t) {

with(x)for(k=2154;k--;beginPath(strokeStyle=R((S(t*2)+2)*50)))arc(540,540,k/4,v=k%4*1.57+S(t*3-k/280)+t,v+.2),stroke()
x.drawImage(c,5,0)

Jun 28 2018 6:14 PM UTC

}// 137/140

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Red Velvet Rose

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firegodjr

remix of d/8739 by u/firegodjr

function u(t) {

with(x)for(k=2e3;k--;)arc(960,540,j=k/4|0,v=k%4*1.57+S(s=t+j/50)*T(s)+S(t),v+.2),stroke(),beginPath(strokeStyle=`hsla(${j+t*80},90%,50%,.3`)

Jun 27 2018 4:37 PM UTC

}// 140/140

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Psychedelicacy 👌

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Agnes

function u(t) {

with(x)for(scale(s=t?1:100,s),fillRect(0,0,Q=255,Q),i=9;i--;fillStyle=R(Q*=!!i,Q,Q,.02))fillRect(4+i+S(t)*3,4-T(T=Math.random),.5,2*(1+T()))

Jun 27 2018 8:40 AM UTC

}// 140/140

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Wonky spooky default

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