Top #math dweets

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.

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Current theme challenge: #ScaryMovies

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jylikangas

function u(t) {

for(c.width=i=v='-1';i++<7;v+=1)x[f='fillText'](v+"x"+v+"="+v*v,155-i*9,30+i*9),x[f](8,X=99-i*6-C(i+t)*25,230-X-S(X)),x[f]('...◢◣.',i**4,64)

Oct 31 2018 3:00 PM UTC

}// 140/140

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Tourists visiting the Great Pyramid of Math

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u/anotherkitten

dang there is some clever stuff in here, nice
u/magna

How do you even...
u/magna

I mean seriously.
u/aleamb

amazing, fucking amazing
u/cantelope

i wish i could give this more than one awesome. great work!
u/jick

Wow!
u/lionleaf

#pyramid #pyramids #numbers #math <--- Need to be able to find this one again!
u/lionleaf

Amazing!
u/lionleaf

The people even bob up and down as they move
u/sigveseb

Fanfuckingtastic
u/magna

Shut down Dwitter. We're done here.
u/katkip

lovee itt
u/iverjo

#witchcraft
u/joeytwiddle

#landscape #scene
u/danny@hille.dk

I went to the Gizaplateauet onece, and I can comfirm it looked excactly like this :-)
u/vain

Very nice. The code and the usage of filltext seems to be real magic - i will try to check and understand the magic

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jaemiejaemie

function u(t) {

c.width=640;x.beginPath();for(i=0;i<640;i++){a=180;for(j=1;j<t*60%60;j+=~~(t)%2+1){a+=S((i+t*60)*j/20)*50/j}x.lineTo(i,a)}x.stroke()

Dec 27 2017 10:31 AM UTC

}// 132/140

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demonstration of basic fourier curves (square/saw)

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u/sigveseb

Very cool!
u/joeytwiddle

Nice. DSP hero!
u/iverjo

Kudos!
u/RomanW

Excellent!
u/joeytwiddle

#math
u/katkip

#fourier

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ersagun

function u(t) {

for(i=j=0,f=24;f--;i+=d("◴∈⌹⌙⍈⌮⌠⌇⌢⌑⌆⌤⌾⍃⌣⌘⌯⌧〈⌳〉⌤⌬⌯"),j+=d(
"○⍈⌾⋻⌤⋧⌥⌬⌰⍕⍓⌗⌥⋼⌘⌭⋧〉⌔⌗⍃⌫⌛〈"))d=a=>C(t*f)*(a.charCodeAt(f)-9e3)
x.fillRect(i,j,9,9)

Oct 21 2018 12:11 AM UTC

}// 140/140

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#yeah

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u/ersagun

This uses a modified version of DCT. All data is in 2 magic strings. To create your own: https://pastebin.com/zEH5aH1R copy this to a dweet draft, draw, get your own magic strings.
u/katkip

wait wot that s actually toi impresive to think how its made
u/iverjo

Clever!
u/Banjuan

Wow dude!
u/Banjuan

Wow dude!
u/magna

yup.
u/aleamb

yeah!!!
u/f8f82804

Awesome! I don't think I've seen a technique like this before! #compressed #math
u/cantelope

crazy cool

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aleamb

function u(t) {

c.width=512;b=136;for(y=b;e=0.7*y,f=y-60,f*=f,y-=2;)for(m=b;m--;)d=m-70,z=S(t)*b*Math.exp(-1e-3*(f+d*d)),x.fillRect(m+e+b,-z+e+100,1,1)

Feb 14 2018 1:37 AM UTC

}// 135/140

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Shorter version: c.width=512;b=136;h=60;for(a=b*b;a--;)m=a%b-h,y=a/b-h,e=0.7*y,x.fillRect(m+e+100,S(t)*b*Math.exp(-1e-3*(y*y+m*m))+e+150,1,1)

u/iverjo

Further, 0.7 can be replaced with .7
u/aleamb

#function #p3d
u/aleamb

#math
u/aleamb

#d3

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monstrousmoonshine

function u(t) {

c.width*=1,x.globalAlpha=.5;for(i=41;i--;x.stroke())p=300/C(v=.3*t+.1571*i),q=p*S(v),x.beginPath(),x.arc(960+p,540-q,Math.sqrt(p*p+q*q),0,7)

Jul 25 2019 3:40 PM UTC

}// 140/140

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Lemniscate

u/donbright

#math
u/KilledByAPixel

👍

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vinca

function u(t) {

for(0==t&&(c.width=960,x.translate(480,270),A=.03),X=480,Y=(0|50*t)%540-270;X>=-480;--X)T(A*X)*T(A*Y)>S(A*A*X*Y)&&x.fillRect(X,Y,1,1)

Mar 24 2019 8:00 AM UTC

}// 133/140

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u/katkip

This is #beautiful! How did you discover this?
u/Xen

Love it!
u/magna

WOW!
u/aleamb

dude!
u/vinca

I found a formula using this tool https://imgur.com/GKPVSJd
u/aleamb

#math #inecuation
u/robbyg

Awesome stuff, and thanks for sharing the tool! 111 bytes (but with no slow reveal): if(!t)for(Y=V=270,A=.03;V>-Y;V--)for(H=X=480;H>-X;H--)T(A*H)*T(A*V)>S(A*A*H*V)&&x.fillRect(H*2+X*2,V*2+Y*2,2,2)

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rodrigo.siqueira

remix of d/12440 by u/rodrigo.siqueira

function u(t) {

t||(a=b=0)
for(i=5e3;i--;)x.fillStyle=R(C(a)*200,S(a)*b/3,t*42),x.fillRect(960+b*S(a*.8),540-b*C(a*.8),1,1),a+=1.9*C(2.5*a)+C(t/5),b+=.00076

Jul 7 2019 9:15 PM UTC

}// 140/140

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Feigenbaum Flower. Homage to Mitchell Feigenbaum (1944-2019). He demonstrated the universal character of dynamical non-linear systems, which has made possible the systematic study of chaos. In 1975, using the small HP-65 calculator, he discovered that the ratio of successive distances between bifurcation events tends to a constant δ ≈ 4.66920... This "ratio of convergence" of period-doubling bifurcations is now known as the first Feigenbaum constant. #bifurcation #attractor #fractal #chaos #math

u/taupelink

This is a great tribute. RIP.
u/donbright

really nice
u/artfarnaa

Rodrigo - are you working full time on this fractal stuff? Super impressive if its only a hobby. Great work.
u/rodrigo.siqueira

#tribute

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rodrigo.siqueira

function u(t) {

v=(a,b,Φ,r)=>{for(i=0;i++<r*2;)
x.fillRect(
a-=S(Φ*3),
b-=C(Φ*i*r/5)*3,s=r/59,s)
r>9&&v(a,b,S(b),r*=.9)}
t<6&&v(960,800,t,99)

Apr 12 2023 8:34 PM UTC

}// 125/140

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Electric circuit diagram - Advanced Generative Fourier Inductive-Reactance Alternate Current with labels (sketch version) #math #fourier

u/tomxor

Inductor, half a capacitor, ac source, resistor, resistor, resistor.. so many resistors! :P
u/joeytwiddle

Is this a RISC-V? https://www.inverse.com/science/riscv-comput…
u/cantelope

wow. i feel it would be improved with a stopping point -> image
u/jdspugh

Cool

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donbright

remix of d/1755 by u/SpecialAgent

function u(t) {

n=frame
q=n%2?400:289.2
d=n%2?2*t:2*t/.61518
X=960+q*C(d),Y=540+q*S(d)
n%4?x.moveTo(X,Y):x.lineTo(X,Y)
x.stroke()
x.fillRect(X,Y,9,9)

Mar 3 2017 2:36 AM UTC

}// 133/140

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This shows the pattern traced by a line directly between the Earth and Venus as they orbit the sun. This pattern is pretty ancient, for example discussed in the book Quadrivum about the old academic relationships between art and science. This type of pattern may be helpful to appreciate the concept of Orbital Resonance in a planetary system.

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u/donbright

thx to https://nssdc.gsfc.nasa.gov/planetary/factsh… for the data
u/sfz

Fascinating
u/donbright

inspired by @SpecialAgent obvs!
u/SpecialAgent

This pattern is very pleasing to the eye, very nicely done!
u/sigveseb

This space stuff is nice!
u/Lazy1337

#cardioid
u/Lazy1337

#math
u/donbright

#venus #space #orbits

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katkip

function u(t) {

t||(X=y=1)
f=x=>C(x)*S(x)*x/92+S(x*3.1416)/6
for(i=999;i--;)x.fillRect(960+X*20,540+y*20,10,10),y+=f(X),X+=f(y)

Mar 6 2019 4:35 PM UTC

}// 111/140

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Create your own chaotic #attractor curves #application modify f=x=

u/katkip

Beautiful #math
u/tomxor

I found a moose! :P f=x=>C(x)*T(x)*x/24+S(x/4)+C(x/8)
u/rep_movsd

#underrated

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