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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flyguy

remix of d/3697 by u/Citiral

function u(t) {

w=1920;for(c.width=i=w;i>=0;i-=10)for(j=0;j<1080;j+=10){i2=i-w/2;j2=j-1080/2
d=Math.sqrt(i2*i2+j2*j2)/.1
o=9+C(d-t*5)*5
x.fillRect(i,j,o,o)}

Dec 27 2017 9:25 PM UTC

}// 140/140

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donbright

remix of d/1863 by u/SpecialAgent

function u(t) {

c.width=1024;w=64;for(i=w*w;i--;)X=i%w,Y=i/w>>0,P=128*((1-t*t)*X*X/(1+t*t)+2*t*Y*Y/(1+t*t)),x.fillRect(200+X*10,Y*10,P%11,P%11)

Mar 11 2017 2:03 AM UTC

}// 129/140

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No Sine or Cosine were harmed in the making of this demo. It is not random - and if it runs long enough it should theoretically become a still image

u/sfz

Those ripples are tripping me out
u/donbright

note to future self - this varies from x*x + y*Y to x*x-y*y (circle to hyperbola) by using the rational parameterization of the circle with one variable parameter, where (1-t**2)/(1+t**2) is an alternate to cosine and 2t/(1+t**2) is an alternate to sine. (or vice versa i forget lol)
u/magna

Awesome!
u/z3vin

So cool

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KilledByAPixel

remix of d/21954 by u/KilledByAPixel

function u(t) {

for(d=i=2e3,Y=t*=220,X=t*30%2e3;i--;)x.fillRect(X+=C(d+=S(t|i/9)),Y+=S(d),1,.3)

Mar 14 2021 7:51 AM UTC

}// 79/140

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Alien Molecules

u/tomxor

So neat!

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chisumu

function u(t) {

c.width=1000;for(j=-15;j<15;j++){k=Math.abs(j);x.fillStyle=R(k*25,k*15,k*10);x.fillRect((3*j*j*C(t))+400,15*j+200,200,10);}

Feb 22 2017 5:59 AM UTC

}// 123/140

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tillsc

function u(t) {

x.globalCompositeOperation='difference'
x.fillRect(S(t*3)*860+860,C(t*7)*440+400,(C(t)+2)*66,200)
x.fillStyle='gold'

Jan 16 2018 7:54 PM UTC

}// 116/140

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bschwb

function u(t) {

c.width|=0
x.lineWidth=15
x.beginPath()
for(i=t*100-600;i<t*100;)z=0.01*i++,x.lineTo(200*(5+S(z)+S(4*z)),200*(3+C(z)+C(4*z)))
x.stroke()

Feb 8 2018 10:24 AM UTC

}// 136/140

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danny@hille.dk

remix of d/19982 by u/anotherkitten

function u(t) {

c.width|=0
x.scale(20,20)
x.fill(p=new Path2D(`M40 ${21-S(t*2)} 21 23`),p.arc(32,18,13,.5,9))
x.fillText("👁️👁️",18,17)

Sep 16 2020 6:57 PM UTC

}// 118/140

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strange remix

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f8f82804

remix of d/13115 by u/Xen

function u(t) {


x.fillText(code,c.width=-1,9);

Apr 9 2019 5:05 PM UTC

}// 32/140

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#32bytes #dwitterquine

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iverjo

remix of d/40 by u/iverjo

function u(t) {

c.width=1e3;for(i=60;i--;)v=t-i/9,x.fillStyle='pink',x.font=20+i+C(v*19-8)/(v*v)+'px A',v>0&&x.fillText('❤',490+i*9*S(i),260+i*9*C(i))

Aug 10 2016 1:21 PM UTC

}// 134/140

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#hearts

u/PiggyClone205

lovely

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rodrigo.siqueira

remix of d/33064 by u/rodrigo.siqueira

function u(t) {

for(i=2e4;i--;x.fillRect(170*X-354,25*Y+540,(f&8*2)/19,t<6))X=i*i/t%15,Y=22*S(i+t),f=((.8+S(X-3))/(4.5+2*(X-7.857)**2+Y*Y)*1800)

Jan 15 2025 3:21 PM UTC

}// 128/140

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Concentric symmetry