Top dweets by u/FireFly

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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FireFly

remix of d/2720 by u/FireFly

function u(t) {

c.width|=0,x.font='3in a';for(x.fillText("warped",Y=A=500,300);Y--;x.drawImage(c,0,Y,2e3,1,D/2,Y+C(Y*t/9)*4,2e3-D,4))D=S(Y/40*T(t))*A*C(t)

May 11 2017 1:19 PM UTC

}// 138/140

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FireFly

remix of d/1853 by u/sebbert

function u(t) {

for(c.width|=a=b=z=0, w = 300; z < 400; z += .1)
  a = C(a+b+t) + C(z*3+t),
  b = C(z*1.56),
  x.fillRect(a*w + 900, b*w + w + w, 3,3)

Mar 5 2017 9:52 PM UTC

}// 134/140

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FireFly

function u(t) {

for(Y=540,x.beginPath(c.width|=i=40);i--;x.lineWidth=8)x.lineTo(X=i*50,Y),x.lineTo(X,Y=540+C(i*99+t*4)*S(i/13)*400);x.fill()

Jul 31 2017 1:36 AM UTC

}// 124/140

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Corkscrew-like thingy!

u/FireFly

I realised with this one that the beginPath is actually redundant since we're resetting the canvas state each frame anyway… whoops

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FireFly

function u(t) {

t || x.translate(X=960, 540)
x.fillStyle = 'hsl('+t*80+',80%,50%)'
x.drawImage(c,9,9)
x.fillRect(t*70%X, 1, 32, 24)
x.rotate(4)

Mar 2 2017 1:53 PM UTC

}// 127/140

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Fast-paced kaleidoscope

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FireFly

function u(t) {

x.strokeStyle = 'hsl('+t*8+',90%,50%)'
x.beginPath()
r = 80 + 10*T(t*16)
x.moveTo(X=960, Y=540)
x.lineTo(X + r*C(t), Y + r*S(t))
x.stroke()

Feb 28 2017 1:12 PM UTC

}// 139/140

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Colour splat

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FireFly

remix of d/2923 by u/Xen

function u(t) {

x.fillRect(C(t)*4+2,0,4,c.width=8)

Jul 21 2017 9:14 PM UTC

}// 34/140

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