Dweets awesomed by u/sigveseb

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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rodrigo.siqueira

function u(t) {

!t&&x.rotate(.7,x.fillRect(0,0,Z=2100,Z),x.translate(Z,0))
for(i=4;i--;x.fillRect(i*50,t*999,50,50))x.fillStyle=`hsl(${i*66},90%,50%,99%)`

Sep 16 2021 9:57 PM UTC

}// 138/140

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Sinclair ZX Spectrum #tribute RIP Sir Clive Sinclair

u/donbright

nice

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rodrigo.siqueira

remix of d/23860 by u/taupelink

function u(t) {

for(i=k=999;--i;x.fillRect(700-i*Y,k+v*i,19*q*X*v,Y*i*v))f=i*t,X=f%3-1,Y=X*f%7-2,x.fillStyle=R(q=i*X/t,q*=X/t,q*=Y**3*3*q/i/X,i/q/q),v=.5**t

Sep 16 2021 3:34 PM UTC

}// 140/140

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Way to the Fog City #city

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pavel

remix of d/23829 by u/pavel

function u(t) {

for(c.width=w=128,i=n=9088,t?a[n*t**3&127]=1:a=[],m=a.includes(0,-w);i--;a[i]=t?p&a[r=i+w]<1?a[r]++:r<n|m&&p:0)x.fillRect(i%w,i>>7,1,p=a[i])

Sep 16 2021 3:53 AM UTC

}// 140/140

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#tetris #snow

Show more comments…
u/KilledByAPixel

Genius.
u/Joachim

Wow. This is very clever
u/rodrigo.siqueira

Now I can't look at city buildings without thinking about this. See https://en.wikipedia.org/wiki/Tetris_effect The Tetris effect (also known as Tetris syndrome) occurs when people devote so much time and attention to an activity that it begins to pattern their thoughts, mental images, and dreams. E.g. People who have played Tetris for a prolonged amount of time can find themselves thinking about ways different shapes in the real world can fit together, such as buildings on a street.
u/Xen

love it!
u/magna

Fun to watch! :)
u/tomxor

@rodrigo I think I have The Dwitter Effect, or "Dwitter Syndrome" :D i'm not even joking
u/sigveseb

Nice idea! As an added bonus, if you leave it running for a while you get a graph of the prng bias for free :)

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rodrigo.siqueira

remix of d/23749 by u/rodrigo.siqueira

function u(t) {

for(i=k=780;--i;x.fillRect(k-i*Y,k-v*i,80*q*X*v,Y*i*v))f=i*t,X=i*f%3-1,Y=X*f%4-2,x.fillStyle=R(q=i*X,q*=X*X/t,q*=Y**3*t*q/i/X,i/q/q),v=.5**t

Sep 6 2021 1:32 PM UTC

}// 140/140

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All the colors of a sunrise

u/taupelink

nice!
u/rep_movsd

Try swapping around the r, g and b values - b, g , r and g, r, r look pretty realistic
u/rodrigo.siqueira

u/rep_movsd please paste the colors (q=...?) that you found so I can try your suggested combinations, thanks!

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taupelink

remix of d/23760 by u/taupelink

function u(t) {

for(i=q=k=810;--i;x.fillRect(k*X,k-q*Y,-i/v,q*Y/v))f=i*t,X=f*f%5,Y=X*f%4-2,x.fillStyle=R(s=q+i*Y*.4,q^=-s,q^=255,(k+q)*(Y+3)**2/4e4),v=4**t

Sep 6 2021 6:21 AM UTC

}// 139/140

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d/23766

u/rep_movsd

You need to write a blog about this particular technique
u/taupelink

i'd like to, but it would take time (i'm a super slow writer) and it's honestly not a priority at the moment. I can at least say this: Part of how I get four vertical bands is having Y range from less than -1 to greater than 1 (in this case, -2 to 2). Multiplying or dividing by Y then has four effects: stretch or compress, do or do not reverse sign
u/rep_movsd

A one page breakdown would be nice, or perhaps I'll write one
u/taupelink

ah ok...like a line-by-line explanation? that's doable...i'll write something up next weekend!

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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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rep_movsd

function u(t) {

eval(unescape(escape`𤀽𣰽🡸𛡦𪑬𫁒𩑣𭀨𣰬𮐽𦐭𤰨𨐽𦀯𦠭𛠵𚐪𦀯𝀬𜰬𥀿𜰺𦀽👚𯁼𦀽👗𛐱🰱𝠺𝀪𚁃𚁆𚡏𚡹𚐾𛠸𙠦𦐥𜐶𙠦𨐾𛠷𙠦𨐼𜠮𝰦𙡙🡚𚰶𞐦𙡙🀹𜀰𚐩𒡙🐨𡠽𩡲𨑭𩐩𙐹𞐪𞀫𚁚🐲𞀰𚐬𥀽𦐼👚𯁼𦐾𚁗🐹𝠰𚐊𩡯𬠨𦀽𦠻𡠼𜐰𜀦𙡘🁗𞱘𚰫𚑐𚁘𚐬𤀨𜐹𜠰𛑘𚐻`.replace(/u../g,'')))

Sep 4 2021 9:16 PM UTC

}// 139/140

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The book of dweet

u/neimad

very nice
u/tomxor

Great idea
u/KilledByAPixel

now that's what i call a good book!

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rodrigo.siqueira

remix of d/23724 by u/taupelink

function u(t) {

for(i=k=630;--i;x.fillRect(X-k,k-i/Y,-Y*i/v,-q*Y/v))f=i*t,X=f*f%3e3,Y=i*f%12-4,x.fillStyle=R(q=i*Y,q*=S(t-k/X)*3,q/t,1e7/X/q/q),v=4*t*(t<9)

Sep 3 2021 8:45 PM UTC

}// 139/140

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Sailing boat at sunset #waitforit (in about 7 seconds the sailboat will appear)

u/tomxor

Wow! #waitforit #impressionist #sailing #boat
u/tomxor

#art
u/Joachim

stunning

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danny@hille.dk

remix of d/20135 by u/danny@hille.dk

function u(t) {

f=i=>S(t+y/255*C(t)+i*1.57)*120;for(y=c.width|=0;y--;)for(i=4;i--;)n=f(i),m=f(i+1),n<m&&x.fillRect(n+f(y/255)+940,y,k=m-n,(i%2?k:99-k)/120)

Sep 3 2021 12:37 PM UTC

}// 140/140

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Twisted metal remix #uncompressed

u/danny@hille.dk

This is a personal thing!!! Twister2d is one of my favorite old school effects, it's also one of the first things i tried to golf to fit into a dweet (and I failed miserably :-)) I have retried tried (and failed) a couple of times, but this is the first time i actually managed to get the damn thing to fit without compression. I had to scarifice colors to maintin an interesting animation. Perhaps I'll get it next time :-) #twister #twister2d
u/New_Core

it look great...
u/DataMeta

beautiful #grayscale

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