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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Jezza

remix of d/13516 by u/katkip

function u(t) {

t?(x.drawImage(c,g=64,i=8,h=960-2*g,j=1350),x.drawImage(c,960+g,i,h,j)):x.fillRect(0,0,1920,1)

Apr 30 2019 7:24 AM UTC

}// 94/140

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Cantor Columns

u/username

bar codes

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New_Core

function u(t) {

for(c.width|=i=0;i<199;i++)x.fillRect(X=t*199%2e3+50*S(i/9)+i/3*C(t*2+2.6),Y=800+i/2*S(t*2)-i+150*S(t*2-.5),9,9)
x.arc(X,Y,50,0,7)
x.fill()

Feb 24 2019 8:03 AM UTC

}// 139/140

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thing on a spring...

u/13thptr

#bounce

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magna

remix of d/24019 by u/magna

function u(t) {

w=c.width|=0
h=1080
A=S(t/5)+2
Z=S(t/7)+3
x.setTransform(k=C(A)*Z,z=S(A)*Z,-z,k,w/2,h/2)
for(i=w;--i;)x.fillRect(i-w/2,-h/2,1,S(i+Z-A)**2*h)

Oct 7 2021 4:57 AM UTC

}// 140/140

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eruonna

function u(t) {

c.width|=0
t?o.push({x:960,y:540,X:C(t*9),Y:S(t*9)}):o=[]
o.map(p=>{x.fillRect(p.x,p.y,9,9),p.x+=p.X,p.y+=p.Y})
o=o.length<999?o:[]

Apr 17 2017 8:33 PM UTC

}// 131/140

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u/donbright

great minds think alike https://www.dwitter.net/d/2159

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BackendForth

function u(t) {

c.width=960
r=260
for(i=-1;i<1;i+=.05)for(j=-1;j<1;j+=.05)d=11*(i*C(t)+j*S(t)+(1-i*i-j*j)**.5),d>0?x.fillRect(r+r*i,r+r*j,d,d):0

Jan 5 2018 5:01 PM UTC

}// 128/140

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u/M1T0

It looks like an eye or something
u/Lazy1337

#eye
u/Lazy1337

#metaball
u/Lazy1337

#metaballs
u/joeytwiddle

#meteyeball

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MagicalMichael

function u(t) {

for(i=100,c.width|=0,q=1-2*t,a=999;i--;)x.fillRect((i*99+t*a/q)%1930,i*i%a,100,5)
x.translate(a,k=600)
x.rotate(2-t/q)
x.fillRect(-k,0,a,10)

Mar 28 2021 8:58 PM UTC

}// 140/140

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Made the shapes in the back more linear so it matches the universe of the traveller.

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rodrigo.siqueira

remix of d/34081 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=1e4;i--;x.fillRect(960+C(k=i*i/3)/Z,S(k)/Z+540,.1,t<4))Z=S(i/5)/190/C(S(n=i/t))-.001/S(n)

Jul 4 2025 2:47 PM UTC

}// 120/140

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Proton energy

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gamseb

function u(t) {

c.width=900
x.font=50+"px sans"
x.fillStyle=R(255,0,0) 
x.fillText("Děkuju!! <3", 200, 200)

Feb 14 2021 11:23 PM UTC

}// 91/140

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reply :)

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myxoh

function u(t) {

x.fillStyle="#001";x.fillRect(0,0,2e3,2e3);for(z=0;z<99;z++)for(y=0;y<99;y++){x.fillStyle="#ffd";x.fillRect(y*99+S(t*3),z*99,S(t*T(z))*2,5)}

Jan 4 2018 11:47 PM UTC

}// 140/140

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Starry night :), please play around with it!

u/joeytwiddle

To avoid setting any fillStyles, you could use x.fillRect() and x.clearRect() for black+white respectively
u/myxoh

Thanks!, I did that and even though I lsot the blueish colour I was able to add more to the scene :)
u/myxoh

https://www.dwitter.net/d/5570
u/iverjo

#stars

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rhys5584

function u(t) {

for(w=i=c.width,x.globalAlpha=.04;i--;)x.fillRect(w/2+S(p=(1.257+S(t)/2e3)*i+C(t))*i/4-(s=Math.min(w/i*16,120))/2,540+C(p)*i/4-s/2,s,s)

Dec 29 2017 12:52 PM UTC

}// 135/140

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