Random dweets | Dwitter

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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katkip

function u(t) {

t||(a=b=0);for(i=99;i--;)a+=C(b-t)/69,b+=S(a*2)/69,x.fillRect(40+a*21,840+b*21,5,5)

Feb 15 2019 12:39 PM UTC

}// 83/140

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A curve, #curve

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AnnanFay

remix of d/7047 by u/BuRRak

function u(t) {

throw p+=(f%4*4-4)/(f++*f++*f)};{p=3,f=2

Feb 25 2018 7:01 AM UTC

}// 40/140

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Golfing u/BuRRak π calculation using Nilakantha's series

u/AnnanFay

Alternatives are: 33 chars using Wallis product but *very* long time to converge. 24 chars using Newton-Raphson if sin & cos allowed.
u/BuRRak

Mind = blown
u/iverjo

#pi

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jylikangas

function u(t) {

for(c.width=i=608;i--;i%320<64&&i&2||i>447&i%32<5||x.fillRect(99+S(A)*(60+9*(i>255)),(i>>5)*11+Q*9,9+i%5,9))x.globalAlpha=Q=C(A=i/5.09+S(t))

Mar 23 2018 5:38 AM UTC

}// 140/140

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Spooky medieval tower

Show more comments…
u/Pjaerr

That's cool!
u/p01

I see what you did with the globalAlpha. Same trick as in https://www.dwitter.net/d/5747
u/aleamb

great!
u/sigveseb

A+++
u/joeytwiddle

coool
u/tomxor

This reminds me of the old game 'Nebulus": https://youtu.be/aI2UHTT18bs?t=28
u/KilledByAPixel

#castle
u/katkip

i bet you are the winner
u/vain

oh my god. absolutely unbelievable! as tomxor said - it reminds of the great Nebulus game

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Xen

remix of d/10264 by u/Finianb1

function u(t) {

for(i=99;i--;x.fillRect(S(Z)*i*9+850,C(Z)*i*5+500,99,99))x.fillStyle=`hsla(${Z=t*i},100%,50%,.1)`

Oct 7 2018 6:37 PM UTC

}// 97/140

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ciaccodavide

remix of d/20687 by u/ciaccodavide

function u(t) {

c.width|=r=300
for(i=99;i--;)
x.moveTo(960+C(t*i/100)*r,530+S(t*i/100)*r),
x.lineTo(960+C(t*i/300)*r,530+S(t*i/300)*r)
x.stroke()

Nov 23 2020 12:28 PM UTC

}// 129/140

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Resistance

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Blacklink

function u(t) {

c.width|=0
for(i=1;i<99;i++){x.save()
x.translate(i*20,540)
x.rotate(i*(Math.pow(t,1.3))*.001+t)
x.strokeRect(-50,-200,99,400)
x.restore()}

Dec 24 2020 1:26 PM UTC

}// 139/140

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The twisting of a rectangle

u/ciaccodavide

Nice!

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BackendForth

remix of d/22804 by u/BackendForth

function u(t) {

v=Math.random
i=v()*1920,j=v()*1080,x.fillStyle=R(0,v()*256)
for(k=299;k--;){x.fillRect(i,j,3,3)
i+=S((j-540)/50)
j+=S((i-960)/50)}

May 18 2021 1:47 AM UTC

}// 131/140

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Plant cells?

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rodrigo.siqueira

remix of d/20162 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,w=2e3,w)
for(i=900;i--;x.strokeRect(0,540+S(i/400+t*5)*360,w,w))x.setLineDash([i]),x.lineDashOffset=-990%i,x.strokeStyle=R(i)

Oct 4 2020 2:58 PM UTC

}// 140/140

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Waving chessboard #chess

u/Leodude123

#awsome!!!!!!

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KilledByAPixel

function u(t) {

for(c.width=i=96;i--;)for(j=55;j--;x.fillText("03",i,j+z))z=i-4||j?0:9,f=30*z+255*Math.random(),x.fillStyle=R(f-z*f,f,f),x.font=`${z+1}px'`

Apr 24 2019 6:15 AM UTC

}// 139/140

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Anyone know how to switch this TV to HDMI?

u/pavel

HDMI? It's already on 3 make sure the coax cable is in and push POWER on the NES.
u/KilledByAPixel

Aha, my Atari 2600 was set to channel 2!
u/joeytwiddle

#tv

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jonathan_b

remix of d/6245 by u/jonathan_b

function u(t) {

for(c.width|=s=i=504;i-=3;)q=S(i*S(S(t/32)/21)),x.lineTo(s*2+s*2*q,s+s*C(i+q+i)*q),x.lineWidth=i/7,x.strokeStyle=R(i,q*s/3,i/q*2),x.stroke()

Jan 20 2018 7:03 AM UTC

}// 140/140

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