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/24161 by u/FireFly

function u(t) {

with(x)for(i=64;i--;font='4cm"')fillRect(X=i%8*T,Y=i/8<<7,X+Y&T,t?fillStyle=R(T):T=128),fillText('♜♞♝♚♛♝♞♜♟♟♟♟♟♟♟♟'[i^(i>>5)*63]||'',X,Y+T)

Oct 19 2021 3:15 AM UTC

}// 139/140

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smolr #chess board

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u/tomxor

different strategy, draw the board on the first frame, pieces on the rest
u/FireFly

ohhh that is good, was too tunnelled in on the setups I'd tried.. good job 🎉
u/TGY

now comes the real challenge "e2-e4"
u/tomxor

fillText Y=i==52?Y-T:Y+T, but can't animate with this method. Don't think it's going to be possible in 140 ether.
u/DataMeta

ugh yes. so satisfying
u/sigveseb

very good, but the king and queen on one side are reversed!
u/tomxor

oops good spot

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tomxor

remix of d/24141 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𩠽𧰽🡓𛰶𞀭𜐮𞀸𯁃𛰱𝠭𝀮𜑼𤰫𝀦𞀬𭰽𨰮𭱩𩁴𪀦👩🐳𜰰𜠴𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𤰽𪐦𜠵𝐬𠰽𪐾🠸𛀱𛁱🐲𚡰𯀰𚐬𤠽𚁰𛑱𚐯𜐶𛁵𦱔𧐫🐳𚡒𛁵𦱔👩𛑷𧐫🐵𚡒𛁵𦱔𛐱𧐽𤠩𬀽𚁵𦱩𧐫🐷𚡒𚐫𚁦𚀩🱦𚁓𛐽𝀬𠰭🐴𚐿𚁓𚡓𚱃𚡃𚐯𞑥𝀫𛠱𞠱𞠰𚑼𯀰`.replace(/u../g,'')))

Oct 16 2021 12:50 AM UTC

}// 140/140

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#default Floyd–Steinberg #dithering

u/ciaccodavide

oooooh, I love dithering! Nice one!
u/tomxor

me too :) I didn't realise how simple the algorithm was before no, and it can be done in a single pass because it's only half a 2d kernel. Tweaking the coefficients (*R) can be fun, e.g 7*R=>5*R, 3*R=>5*R better preserves the dark and light areas in this image.
u/magna

Wow
u/sigveseb

Very nice!

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tomxor

function u(t) {

for(w=c.width&=i=8320;i--;x.fillRect(S=i&127,C=i>>7,1,q=2*p|0),R=(p-q)/16,u[T]+=3*R,u[T=i-w]+=5*R,u[T-1]=R)p=(u[i]+=7*R)+(S*S+C*C)/8e3-1||0

Oct 15 2021 11:21 PM UTC

}// 139/140

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Floyd–Steinberg #dithering

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tomxor

remix of d/24055 by u/Joachim

function u(t) {

with(x)for(i=0;i<9;stroke())lineTo(a=8*i,b=50+5*C(t-i)),lineTo(a-5*S(t-i),b+9),lineTo(a,b),fillRect(i&&(a-t)%21*6,64,i||(c.width=128),1-i++)

Oct 10 2021 12:47 PM UTC

}// 140/140

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Mini Stick Millipede

u/danny@hille.dk

Great golf
u/Joachim

clever!

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tomxor

remix of d/23968 by u/KilledByAPixel

function u(t) {

for(X=t?X+r*50:0,i=h=11+6*C(t*4+X%1)<<5;--i;x.fillRect(...t?[X-r*i/4,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*999,h,r]))r=Math.random()

Oct 2 2021 12:56 PM UTC

}// 128/140

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Smolr Tree Lake

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u/tomxor

A nice round 2**7 chars. A bit of bitwise, ternary trimming and coefficient concessions
u/KilledByAPixel

nice! I'm surprised you didn't get rid of the Math.random()!
u/yonatan

nice golf, r=(t+i)**3.9%1 works too
u/tomxor

Yeah I was surprised to, I think this one is a bit more sensitive to bad distributions. Yonatan's is pretty good though.
u/pavel

X=t?X+r*50:0 -> X=t&&X+r*50
u/pavel

r=++t**3.9%1 saves 3 chars
u/pavel

Ah, no, it kills the sky/water.
u/KilledByAPixel

i feel it is possible to somehow golf the random part by at least a byte but I still haven't found a way without major issues
u/pavel

for(X=t&&X+r*25,i=h=11+6*C(t*4+X%1)<<5;--i;x.fillRect(...t?[X-r*i/8,600+(r*8&3?i-h:h-i),i/4,2]:[i*8,r*600,h,r]))r=1+S(i^X)
u/pavel

122
u/KilledByAPixel

I knew you could do it pavel!
u/aleamb

beautiful!!

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tomxor

remix of d/23756 by u/tomxor

function u(t) {

for(Y=t*480%720|0,X=1280;X--;!Z|!Y|Y>640|(Z/480+.75&Y/480+.83&(X|Y)/16%15)&&x.fillRect(320+X,180+Y-Z/6*S(Z/203),3,4))Z=X>640?1279-X:X

Sep 5 2021 8:28 PM UTC

}// 133/140

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Smolr #book of #sierpinski

u/tomxor

Someone's been drawing in the margins...
u/erin

magic

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tomxor

remix of d/23746 by u/rep_movsd

function u(t) {

for(Y=t*480%720|0,X=1280;X--;!Z|!Y|Y>640|(Z/480+.75&Y/480+.83&C(Z*Y)>.8&&Y&48)&&x.fillRect(320+X,180+Y-Z/6*S(Z/203),3,4))Z=X>640?1279-X:X

Sep 5 2021 3:30 PM UTC

}// 137/140

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Smolr #book of #music

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tomxor

remix of d/23746 by u/rep_movsd

function u(t) {

for(Y=t*480%720|0,X=1280;X--;!Z|!Y|Y>640|(Z/512+.86&Y/512+.86&Z>>5&Y>>5&C(Z*Y)>0)&&x.fillRect(320+X,180+Y-Z/6*S(Z/203),3,4))Z=X>640?1279-X:X

Sep 5 2021 3:31 PM UTC

}// 140/140

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Smolr #book of #logograms

u/rep_movsd

As the moon, so the sun, fortune is as a ripening plum - I Ching

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tomxor

remix of d/23746 by u/rep_movsd

function u(t) {

for(Y=t*480%720|0,X=1280;X--;!Z|!Y|Y>640|(Z/480+.75&Y/480+.83&C(X*Z*Y)>.8&&Y&15)&&x.fillRect(320+X,180+Y-Z/6*S(Z/203),3,4))Z=X>640?1279-X:X

Sep 5 2021 3:30 PM UTC

}// 139/140

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Smolr #book of dweet

u/tomxor

Smolr #book of #sierpinski
u/tomxor

Yay, remix fail

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tomxor

remix of d/23549 by u/tomxor

function u(t) {

eval(unescape(escape`𩡯𬠨𨐽𣑡𭁨𛡡𨡳𛁣𛡳𭁹𫁥𛡢𨑣𪱧𬡯𭑮𩀽𙰣𞐹𞐧𛁣𛡷𪑤𭁨𙠽𪐽𝀳𝐲𞱘🐱𛐨𭀫𪐯𜰲𚐥𜠬𦐽𛐭𪐯𜡥𜰻𮀮𩡩𫁬𤱴𮑬𩐽𚁩𧡩🠾𝠩𙠸🰧𬡥𩀧𞠧𘱦𩡦𙰬𮀮𩡩𫁬𤡥𨱴𚀶𝀪𚁘𛱲𚱡𚀲𛑴𙐴𚐫𜐩𛀹𝠭𝠴𚠨𦐯𬠫𨐨𤰨𭀩𚐩𛁫🐵𛱲𛐲𛁫𚐩𬠽𛐭𦐪𦐫𦀪𦀫𜐻`.replace(/u../g,'')))

Aug 13 2021 9:03 PM UTC

}// 140/140

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Smooth Colour #Amiga #Ball

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u/tomxor

If someone can squeeze in a hard shadow and a purple grid we will be done.
u/danny@hille.dk

Beautiful
u/danny@hille.dk

I distinctly remember the grid to be blue... but all the youtube videos shows it to be purple... I think it's a conspiracy :-)
u/ullo

i like
u/KilledByAPixel

dweetabase updated! https://dweetabase.3d2k.com/
u/tomxor

I can't find it now but I seem to remember reading about how emulated colours of amigas look different from real amiga video output. The emulators are probably just spitting out the RGB values and letting the host OS do the gamma etc. I suspect real amiga video output must have been a bit "coloured" which causes this difference.

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