Infinity integration limits: use ±t for… by marc8

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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marc8

remix of d/14032 by u/marc8

function u(t) {

with(Math){a=-t;b=t;f=X=>1/cosh(X)
w=c.width|=p=i=0
s=w/frame
for(k=(b-a)/w;p<w;)x.fillRect(p+=s,q=w/4,s,-q*(y=f(a+k*p)),i+=k*s*y)
throw(i)}

May 21 2019 7:18 AM UTC

}// 140/140

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Infinity integration limits: use ±t for ±∞. Convergence not guaranteed.

u/13thptr

great
u/13thptr

#math


      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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