Hot dweets by u/tomxor

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: #Food

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tomxor

remix of d/16174 by u/pavel

function u(t) {

eval(unescape(escape`景爨汥琠堬夬娬眽挮睩摴栽ㄲ〬猽ㄶⱩ㴸攳ⱪ㭩ⴭ㭸⹦楬汒散琨堽椥眬夽椯眬ㄬ⸶ⵚ⼹〩⥦潲⡪㴳ⱚ㵷㭪ⴭ㬩娭㵍慴栮桹灯琨堭㘰ⱙ⼲ⱚ⤭ㄲⵓ⡙⽳⭴⨴⤪㘫䌨㔪匨夯猫䌨堯㘩⤫㔪匨堯猫匨娯猫夯㘫琪㠩⤫琩⨵`.replace(/u(..)/g,"$1%")))

Oct 19 2019 2:09 PM UTC

}// 140/140

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Ray Marching SDF Smoke #improved resolution

u/tomxor

Exchanged marching depth for resolution... makes it a bit less 3D but a but more smokey i think.
u/tomxor

#smoke
u/tomxor

#raymarching

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tomxor

remix of d/15979 by u/tomxor

function u(t) {

for(k=i=1e3;--i;x.fillStyle=R(a=99+S(j*7)*88,a,a))j=i/k+t/3,x.fillRect(k+S(m=k*j^k)*(r=7e4/i*(3+S(m*(j&7))*C(j*7)+S(j))),k-i+C(m)*r,r/2,r/2)

Oct 8 2019 10:55 PM UTC

}// 140/140

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Claustrophobia #waitforit

u/tomxor

Remember to breath!
u/DataMeta

Reminds me of The Enigma of Amigara Fault
u/tomxor

:O that was symultaneously terrifying and bizarre.
u/larzuk

epic

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tomxor

remix of d/15961 by u/keithclark

function u(t) {

for(k=i=800;--i;x.fillStyle=R(S(j*5)*256,S(j^m)*192,S(j*6)*99))r=9e4/i,x.fillRect(k+i*S(j=i/k+t/4)+r*S(m=k*j^k),480+i*C(j)+r*C(m),r/2,r/2)

Oct 8 2019 8:39 PM UTC

}// 138/140

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Funky Version :P

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tomxor

remix of d/15951 by u/tomxor

function u(t) {

for(w=c.width=120,i=9e3;i--;x.fillRect(R=i%w,T=i/w,1,.5-Z/64))for(j=4,Z=T;j--;)Z=((R-60)**2+(T-33)**2+Z*Z)**.5-24+C(R*T/120+t*9)*C(Z/3+t)*7

Oct 6 2019 7:24 PM UTC

}// 139/140

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Ray Marching SDF Gone Wrong

u/tomxor

Not sure what Z represents anymore, it's essentially chaotic marching...
u/tomxor

Oh, i see it now, it's a #stargate just add glyphs
u/tomxor

#raymarching

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tomxor

remix of d/15947 by u/tomxor

function u(t) {

for(c.width=127,i=9e3;i--;x.fillRect(R=i&127,T=i>>7,1,.5-Z/64))for(j=5,Z=32;j--;)Z-=((R-64)**2+(T-36)**2+Z*Z)**.5-24+C(R*T/120-t*9)*C(Z/3)*6

Oct 6 2019 4:03 PM UTC

}// 140/140

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Ray Marching SDF Sphere+Meltyness

u/tomxor

#raymarching

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tomxor

function u(t) {

for(c.width=63,i=3e3;i--;x.fillRect(R=i&63,T=i>>6,1,.5-Z/24))for(j=5,Z=12;j--;)Z-=((R-32)**2+(T-18)**2+Z*Z)**.5-8+S(R/2+t*4)*S(T/2)*S(Z/2)*3

Oct 6 2019 12:27 PM UTC

}// 140/140

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Ray Marching SDF Sphere+Bumps

u/tomxor

Specifically, sphere tracing, with axis aligned field, i.e no perspective, marching along Z only. The sphere is not rotating, the simple displacement map is just being pushed through it's x.
u/yonatan

orthogonal raymarching... nice idea
u/tomxor

You said it more succinctly :)
u/tomxor

#raymarching

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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

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Squine Wave

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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

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tomxor

function u(t) {

for(x=96,i=O='';u='񾈗򔼐򪄊'.charCodeAt(i/2)>>i++%2*5&31;O+=String.fromCharCode(x))x+=u-16;throw O

Sep 22 2019 2:00 AM UTC

}// 93/140

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Limited Range Delta Compression - Fit 200 chars! with extreme limitations :D

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u/tomxor

Each char is encoded as 5 bits (fitting 4 into each 20bit surrogate pair), representing the numeric difference between the previous and current ASCII codepoint. Since 5 bits only provides 32 values this is limited to shifting -16 to +15 codepoints each char, this makes it rather challenging to write code with since you can only reach a max of 1/3 of the useful ASCII codepoints at a time.
u/tomxor

Here's the encoder if you are looking for a very contrived adventure: f=(s,x=96,b=16,o='')=>{for(p=0,i=0;i<s.length;){x+=d=s.charCodeAt(i)-x;p|=d+b<<((i%4^2)*5);++i%4?0:p=o+=String.fromCodePoint(p+0x10000)}return o;}; f('helloooworld')
u/tomxor

... don't try this, seriously, you can't even get a for loop started
u/tomxor

#compressor
u/ximavus

this is actually a very nice idea
u/ximavus

#underrated

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tomxor

remix of d/15756 by u/KilledByAPixel

function u(t) {

t%7|!u?0:u=O+=String.fromCharCode(u);u|=(1&'􉬭󤗘􇔴󹩨􇷒󛻭󭅪𞻯򃆚񼵩󗡴󡑠񫆥򥗋񺺊򊅊񃐘񨰵󑥚񷃕󖆒𺪞𤧞󶜴󩩓󷧙󾖁񍍧򚎴󄺊󀐾򂪹󥅠𒚳󮇋񞚅󩉪򸫴󸢩𑐀'.charCodeAt(t/10)>>t%10)<<t++%7;throw O}{O=''

Sep 21 2019 2:17 PM UTC

}// 130/140

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Saved 9 more... although it decodes at 1 bit per second !!

u/tomxor

Decoder now = 90 chars, leaving 50*20/7 = 142 chars of content yay! +2 chars
u/tomxor

To break even with 184 chars, 184*7/20 = 67 20bit chars, leaving 73 for decoder, not sure this is possible :/
u/tomxor

... I guess 1bit/s is just not good enough for the internet of the 21st century XD

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tomxor

remix of d/15730 by u/KilledByAPixel

function u(t) {

_='􉬭󤗘􇔴󹩨􇷒󛻭󭅪𞻯򃆚񼵩󗡴󡑠񫆥򥗋񺺊򊅊񃐘񨰴󑥘򓒱𖖃𺞅򧔹񼳶󹙹򧙻񕃍򶍊𚐀'
eval(t?O:unescape(escape`景爨嘽䤽伽✧㭉㰱攳㭉┷⬡噼簨伫㵓瑲楮朮晲潭䍨慲䍯摥⡖⤬嘽〩⥖簽⡟⹣桡牃潤敁琨䤯㄰⤾㹉┱〦ㄩ㰼䤫⬥㜻`.replace(/u(..)/g,"$1%")))

Sep 20 2019 12:44 AM UTC

}// 135/140

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Inception Compression - d/15730 decoder inside d/9207 decoder

u/tomxor

Just for the kicks, only actually saved 4 bytes. Still way off 184 for actual content

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