Dweets awesomed by u/pavel

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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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

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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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sandromiccoli

remix of d/23857 by u/sandromiccoli

function u(t) {

for(a=50;a--;)x.beginPath(),x.arc(960+C(s=(137.5*a))*(r=a*t%300*1.5),540+S(s)*r,50-(a*S(t))%50,0,7),x.stroke(),x.fillStyle=`#f00a`,x.fill()

Sep 15 2021 2:03 AM UTC

}// 139/140

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sandromiccoli

function u(t) {

c.width=-1;for(i=65;i--;)for(j=35;j--;)x.fillRect(i*5,j*5,s=4,s),x.fillStyle=R(o=(C(S(i)+S(j-t)))*1550,o,o,1)

Sep 14 2021 10:45 PM UTC

}// 109/140

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#falling #tetris #pattern

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rodrigo.siqueira

remix of d/23841 by u/rodrigo.siqueira

function u(t) {

for(c.width|=i=50;i--;)for(j=25;j--;x.fillRect(50*i,50*j,45,45))
o=(j/2)*9,x.fillStyle=R(p=o*C(i/7-3+S(j/2+t*9)/8)*20-S(t*2+j/9)*1e3,p/7)

Sep 14 2021 3:07 PM UTC

}// 137/140

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Animated Flames #pixel

u/UEZ

Looks very nice but it looks much better without the grid. ^^
u/Joachim

#fire

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pavel

remix of d/23821 by u/pavel

function u(t) {

for(c.width=w=127,i=n=9087;i--;u[i]=420*t>n-i?p&u[r=i+w+i*t%3|0]<1?u[r]++:p:(X-Y/2-30*t-w&Y)<1)x.fillRect(X=i&w,Y=i>>7,.7,p=u[i])

Sep 10 2021 9:36 PM UTC

}// 129/140

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Mr Sierpiński, I don't feel so good

u/Joachim

#sierpinski #particles #physics
u/tomxor

interesting idea (transitioning between imovable and movable).
u/Toby

Very original!
u/rep_movsd

Entropy :(
u/donbright

bravo

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pavel

remix of d/19550 by u/tomxor

function u(t) {

for(c.width=w=127,i=9087;i--;t?p&u[r=i+w+r%3]<1&&--u[i]&++u[r]:u[i]=r)x.fillRect(X=i&w,Y=i>>7,.5,p=u[i]),v=Y-36,r=(X/3-21)**4>v*v?2:i*t|Y<30

Sep 10 2021 2:03 AM UTC

}// 140/140

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Overfilled #hourglass

u/pavel

#time
u/rep_movsd

Amazing!
u/tomxor

Excellent! makes me wonder what else we can do with this stuff...

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pavel

function u(t) {

for(i=420;r=--i>>2;i&3||x.beginPath(x.fill()))x.fillStyle=`hsl(177,42%,${90-3*r}%`,x.arc(960,580,24*r,a=(i*2-.5+(~r%2|1)*C(t-r/9))/.9549,a)

Sep 8 2021 11:34 PM UTC

}// 139/140

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3x33 [A] by twitter.com/tequibo

u/rodrigo.siqueira

What is Pavel's Twitter account?
u/pavel

twitter.com/pavelbahilov I have plans to post but I don't currently

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pavel

function u(t) {

for(i=c.width|=t%=1,s=60*2**t,r=.71+.29*t;i--;x.fillRect(((i&60)+Y%2*2+r*C(a=.7854*(2*i+t-1))-t-.5)*s,(Y*2+r*S(a)-.5)*s,s,s))Y=i>>6

Sep 8 2021 6:43 PM UTC

}// 131/140

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Check this out

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u/UEZ

Looks very nice and smart coded. One noob question: which colors will be used in the loop by default when you don't use fillStyle? I saw many examples without fillStyle but the result is not monochrom. Thx.
u/rep_movsd

The default fill color and stroke color are black. Colors have to be set with fillStyle, strokeStyle or perhaps even setting the background (rare)
u/pavel

The default color for fill, fillRect, stroke, strokeRect is black and you need to call fillStyle or strokeStyle respectively. You must have seen other drawing techniques, maybe like putImage or using style attributes to add a filter over the B&W colors.
u/pavel

Haha looks like we answered at the same time and eerily similarly.
u/UEZ

Hmm, when I look to https://www.dwitter.net/d/23732 I cannot see any strokeStyle/fillStyle but the color result is greyscale.
u/pavel

Gray can be achieved by spacing out black pixels amongst white ones. d/23773 shows this clearest.

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pavel

remix of d/23765 by u/New_Core

function u(t) {

for(c.width|=i=w=640,t?x.font='5in"':r=new Date;j=--i>>4;x.fillText(String.fromCodePoint(127812+i%16),j*w-w,(r*j+i+9*p/(1+w**p))%16*w))p=t-j

Sep 7 2021 2:36 AM UTC

}// 140/140

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#slots

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u/pavel

Have to time it juust right :)
u/New_Core

nice
u/danny@hille.dk

Man - that is some next level golfing-fairy-dust you have used here :-)
u/pavel

Aw, its broken on iPhone, the font name trick doesn't seem to work.
u/anshu

rrr
u/lewdev

How? This is really cool.
u/joeytwiddle

I remember on some devices, fonts over a certain size just don't show. A workaround is to use a scale transform, or reduce the canvas size.

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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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