Falling spirals using the x.drawImage(c… by rodrigo.siqueira

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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rodrigo.siqueira

remix of d/19229 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=0)=>Y?f(X*X-Y*Y-.3,X*Y-.9,n+6):x.fillStyle=`hsl(${-n} 70% 50%`;i--;x.fillRect(i,0,1,3))f(i/2e3,S(t/8));x.drawImage(c,0,3)

Jun 30 2020 1:22 PM UTC

}// 140/140

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Falling spirals using the x.drawImage(c,0,1) infinite scroll trick to copy first line

u/bandaloo

beautiful! x.drawImage(c,0,1) is basically the only thing i do now


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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