Dweets awesomed by u/smtsjhr

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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danny@hille.dk

remix of d/23547 by u/danny@hille.dk

function u(t) {

c.width=w=180;for(m=2e4;m--;x.fillRect(i,j,2,z))i=m%w,j=m/w,X=i/90-1,Y=j/90-.6,r=X*X+Y*Y,d=r*9*(2+S(t*9)),z=S(X/d*9-9*C(t))*C(Y/d*9-7*S(t))

Aug 12 2021 6:12 PM UTC

}// 139/140

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Silly remix

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danny@hille.dk

function u(t) {

c.width=w=180;for(m=2e4;m--;x.fillRect(i,j,1,z))i=m%w,j=m/w,X=i/44-2,Y=j/44-1.1,r=X*X+Y*Y,d=r>1?1:C(r)*2,z=S(X/d*9-t*C(t)*5)*C(Y/d*9-t*S(t))

Aug 12 2021 5:55 PM UTC

}// 140/140

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moar ballz

u/cantelope

too much ballz
u/danny@hille.dk

Try not to think of it as too much ballz, try to think of it as too little fire, then you will realize there are no ballz...

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rodrigo.siqueira

remix of d/23536 by u/mxfh

function u(t) {

r=106;c.width|=w=300;for(λ=φ=a=w/r;λ+=a,φ>-a*12;φ-=.1)x.arc(C(φ)*S(d=λ-t)*r+960,(S(φ+a/4)*C(d))*r+530*(1+1/t),φ*φ,0,7)
x.fill("evenodd")

Aug 11 2021 2:07 PM UTC

}// 136/140

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Spinning Vortex #vortex

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cantelope

function u(t) {

eval(unescape(escape`𤐽𫐽🡸𛡬𪑮𩑔𫰨𞐶𜀫𤰨𬀽𪐯𞐮𝐵𚱴𚐪𤰨𫠽𬐯𜐲𚐯𚁚👃𚁰𚐪𤰨𫠩𛑓𚁴𚐭𜠩𚡨𛁨𚱃𚁮𚐯𦠪𪀩𞱦𫱲𚁣𛡷𪑤𭁨𯀽𪀽𝐴𜀬𮀮𩡩𫁬𤱴𮑬𩐽𙰣𜀹𨠸𙰬𪐽𪀪𝀻𪐭🐲𞱸𛡢𩑧𪑮𤁡𭁨𚁸𛡦𪑬𫀨𚐩𚑩𩠨𚁩𚰨𬐽𪐯𝠰𯀰𚐩𙐲𚑑𚁑𚁑𚁑𚀩𛀫𚱩𚐬𚰫𬐩𛀭𛑩𚐻`.replace(/u../g,'')))

Aug 10 2021 6:09 PM UTC

}// 140/140

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u/aleamb

#sphere #p3d

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lewdev

function u(t) {

n=t*10|0
for(i=0;i<100;i++){
x.beginPath();x.moveTo(i*50,n);n=n%2?(n*3)+1:n/2;x.lineTo((i+1)*50,n);x.stroke();}

Aug 9 2021 12:06 PM UTC

}// 111/140

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3x+1 Unsolved Math Problem https://youtu.be/094y1Z2wpJg

u/rodrigo.siqueira

Paul Erdős said about the Collatz conjecture: "Mathematics may not be ready for such problems." He also offered US$500 for its solution. https://en.wikipedia.org/wiki/Collatz_conjec…
u/New_Core

I tried to visualize something with the Collatz Conjecture a few weeks ago but I didnt come up with anything good.. I bet someone can do some nice stuff with it here.
u/lewdev

Yeah, I figured there's a way to build out visuals like the ones in the video. I just did a quick one to get started. Math is a great inspiration for dweets.
u/smtsjhr

neat! some more inspiration for visualizing Collats here: https://youtu.be/RzQE2Q7lsT4

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taupelink

remix of d/23480 by u/taupelink

function u(t) {

for(i=q=410;--i;x.fillRect(i*X*4,630+q/Y,q*q/5**t,i*i/5**t))f=i*t,X=f*f%4,Y=X*f%4,x.fillStyle=R(q+=S(q)*i/t,q+=C(X*q)*i,q*=C(q%9*Y),Y/q**.6)

Aug 8 2021 3:44 PM UTC

}// 140/140

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d/23515

u/magna

When I squint I see a crowded street in the rain
u/rep_movsd

Like a colorful African market
u/danny@hille.dk

beautiful

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ArthurThuczsec

remix of d/23507 by u/ArthurThuczsec

function u(t) {

for(f=i=197;i--;x.fillStyle=R(r%f,g%f,b*t%f,.02))x.fillRect(r=960+C(t*i^f)*i*t,g=540+S(t*i^f/2)*i*t,b=199/(t+1),b),x.strokeRect(r,g,b/2,b/2)

Aug 7 2021 7:09 PM UTC

}// 140/140

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ArthurThuczsec

remix of d/23496 by u/danny@hille.dk

function u(t) {

for(c.width=w=99,i=6e3;i--;x.fillRect(X,Y,1,1))x.fillStyle=R(m=i/13+(S(t+(X=i%w)/9)*C((Y=i/w)/7+t*69-C(X/8+t))*w),m/(3-C(t*7)),m*(2+S(t*3)))

Aug 7 2021 5:20 PM UTC

}// 140/140

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danny@hille.dk

function u(t) {

for(c.width=w=58,i=2e3;i--;x.fillRect(X,Y,1,1))x.fillStyle=R(m=i/7+(S(t+(X=i%w)/9)*C((Y=i/w|0)/9+t*4-C(X/9+t))*9)*5,m/(2+C(t)),m*(2+S(t)/2))

Aug 7 2021 9:08 AM UTC

}// 140/140

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plasma fire

u/neimad

beautiful!

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rodrigo.siqueira

remix of d/23443 by u/danny@hille.dk

function u(t) {

for(c.width=w=512,d=new ImageData(w,w),m=w*w,i=-1;m--;d.data[i+=4]=T(m/w/r+t*30|X/r)*w)r=((X=m%w-256)*X+m*m/2e5)/3e4
x.putImageData(d,0,0)

Aug 1 2021 4:28 PM UTC

}// 138/140

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Rising from curved space

u/Xen

very nicely
u/Toby

Lovely! How can you use r in the loop header without first defining it (done in the loop body)?
u/danny@hille.dk

Creative use of geme mechanics :-) The for loop has 3 sections separated with semicolons, first is for initializing: this is runs once before the loop starts, second is exit conditions: runs for every iteration before the "loop scope", third is for incrementation: this part actually first run after the loop scope. EX: for(i=9;i--;console.log(j))j=i*2 i is initalized to 9 i is decremented if i equals 0 (any number in js is evaluated to true except 0 wich is false) the loop exist then the j is set to two times i in "loop scope" finally j is printet to the console

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