Dweets awesomed by u/DataMeta

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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: #Food

show FPS hide FPS share fullscreen

DataMeta

remix of d/15843 by u/DataMeta

function u(t) {

s=C(t);c.style.background='#CCC';if(t<3)for(i=2e3;i--;)
x.fillStyle=R(l=i/7,l,l),x.fillRect(t*s>=0?1920-i:i,540-l*s*2,9,9)

Sep 29 2019 7:42 PM UTC

}// 122/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share 1 remix fullscreen

DataMeta

remix of d/15839 by u/DataMeta

function u(t) {

s=C(t);c.style.background=R(g=s*255,g,g);if(t<3)for(i=1920;i--;)
x.fillStyle=R(l=i/7.5,l,l),x.fillRect(t*s>=0?1918-i:i,540-g,4,4)

Sep 29 2019 4:55 AM UTC

}// 129/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

#gradient #illusion

u/katkip

nice
u/iverjo

#opticalillusion

show FPS hide FPS share 1 remix fullscreen

DataMeta

function u(t) {

c.style.background=R(g=S(t*1.5)*255,g,g);if(t<3)for(i=1920;i--;)
x.fillStyle=R(l=i/7.5,l,l),x.fillRect(i,540-C(t)*i/5,13,13)

Sep 28 2019 4:17 PM UTC

}// 124/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Had this laying around. Demonstrates the #illusion in d/15823. The triangle's #gradient remains unchanged.

u/DataMeta

The center of the base of the triangle doesn't exhibit the illusion strongly since there is a constant reference color near it and it is far from the changing background.
u/iverjo

#opticalillusion

show FPS hide FPS share fullscreen

joe.m

remix of d/15836 by u/joe.m

function u(t) {

t?0:q=j=4900,d=[-1,99,1,-99]
x.globalCompositeOperation='xor'
j+=u[q]?-1:1
u[q]^=1
q+=d[j%4]%9801
x.fillRect(19*(q/99|0),10*(q%99),18,8)

Sep 28 2019 2:08 PM UTC

}// 136/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

langton's ant. Chaos becomes order after about 10k iterations, wait for it...

u/joe.m

#emergent #automata
u/KilledByAPixel

Welcome to the #ant club!
u/Xen

nice!

show FPS hide FPS share fullscreen

tomxor

remix of d/15822 by u/joe.m

function u(t) {

for(c.width=w=X=1920;X--;x.fillRect(X,w*Y/18,9,9))
for(Y=n=5;n--;k=n*2+1,Y+=S(38*X/w*k)/k**(2-S(5*X/w-3*t)))1

Sep 27 2019 8:03 PM UTC

}// 109/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Squine Wave

Show more comments…
u/Xen

i wanna hear it!
u/tomxor

Oh no the challenge has been set! i'd imagine it sounds a bit like wavetable synthesis, even though it's not.
u/KilledByAPixel

it sounds like tone morphing between a sine and square wave.
u/katkip

interesing
u/katkip

^ with t
u/iverjo

#waveform

show FPS hide FPS share fullscreen

robbyg

remix of d/15802 by u/robbyg

function u(t) {

for(i=2304,Z=30;i--;x.fillRect(H*Z,V*Z,Z,Z))H=i%64,V=i/64|0,A=Math.atan2(V-18,H-32),x.fillStyle=S(Z*t+5*A)>0>0?'#1112':'#eed6'

Sep 27 2019 3:22 PM UTC

}// 126/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Staring at the ceiling fan.

show FPS hide FPS share 1 remix fullscreen

Xen

function u(t) {

with(x)for(i=8;i--;fillStyle=`hsl(${a*57.3+t} 70%60%`)beginPath(fill(lineTo(960,540))),arc(960,540,2e3,a=i*.8-t,a+.8)

Sep 26 2019 5:10 PM UTC

}// 117/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/DataMeta

Mhm yup

show FPS hide FPS share 1 remix fullscreen

robbyg

remix of d/15800 by u/zooi

function u(t) {

for(i=3e3,c.width|=Z=30;i--;S(8*t+8*A)>0&&x.fillRect(H*Z,V*Z,Z,Z))H=i%65,V=i/65|0,A=Math.atan2(V-18,H-32),x.fillStyle=`hsl(${A*57},70%,60%)`

Sep 25 2019 9:48 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Remixed for fullscreen goodness and color. 🌈⭐

show FPS hide FPS share fullscreen

yonatan

function u(t) {

for(c.width|=i=99,x.font='4in "';i--;x.fillText('EMBOSS',250+(i&&S(i)*i/9),750+(i&&C(i)*i/9)))x.fillStyle=`hsl(0 0%${i?S(i+t*2)*50+75:99}%`

Sep 24 2019 12:00 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

I think fullscreen looks nicer

u/joeytwiddle

#text #lighting

show FPS hide FPS share 2 remixes fullscreen

KilledByAPixel

remix of d/15782 by u/KilledByAPixel

function u(t) {

t?eval(O+=";for(c.width|=9-)xlRe40+*S3,52"["𠒃񁔇񢖋񓗍񐇯򐃑񐙒򴵅򹋖񕷘󋢙򒭘󅪻󅮛󭫝򕠀".charCodeAt(I/2)>>I++%2*5&31]):I=O=""

Sep 23 2019 8:48 PM UTC

}// 98/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Smaller uncompressor, only takes about a second to boot up!

Show more comments…
u/KilledByAPixel

Here's the compressor code... $="for(c.width|=i=9;i--;)x.fillRect(400+i*99+S(t)*300,400,50,200)";n=[...new Set([...(';'+$)])].join(o='');for(v=i=0;(q=$[i])||i%4;++i)v+=q?n.indexOf(q)<<i%2*5:0,i%2?(o+=String.fromCharCode(((i%4==3?55:54)<<10)+v),v=0):0;throw 't?eval(O+="'+n+'"["'+o+'".charCodeAt(I/2)>>I++%2*5&31]):I=O=""'
u/KilledByAPixel

From my testing it can do up compress up to 224 characters of code if all of the unique 32 characters are used!
u/KilledByAPixel

#compressor
u/tomxor

Swapping the ternary statement for }{I=O="" at the end saves one more char.
u/tomxor

But this will only work on a new dweet
u/tomxor

Really need a larger charset though :/ I think 64 should be enough for most, which bumps it up to 6 bits, but that requires a lot more code to extract, might still be better than 184 though?
u/tomxor

Nah, before even considering extra decompression code, 6 bits with 32 dictionary barely provides 192 chars, as soon as you start actually filling the dictionary with more you quickly go under 140 encoded chars. I think you hit the best balance for this method.
u/KilledByAPixel

i think 5 bits is the sweet spot, it is definitely tough writing code that only uses 32 chars but maybe we can see some programs that would not otherwise be possible
u/DataMeta

#hiddengem
u/ximavus

maybe we can use a hybrid 5-6 bits? like any char index that is even is 5 bits and every odd one is 6. Don't know if this would fit and I have no idea for compressors

dwitter.net | DataMeta (42273)