[paint editor] use the keyboard to chan… by MrM@_S

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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MrM@_S

function u(t) {

if(!t)c.width=r=g=b=590
f=255
onmousemove=e=>{E=e.pageX;X=e.pageY}
onkeyup=e=>r+=b+=g+=2
x.fillRect(E,X,9,9)
x.fillStyle=R(r&f,g&f,b&f,.1)

Apr 17 2017 1:45 PM UTC

}// 138/140

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[paint editor] use the keyboard to change the paint and use your mouse to draw

u/magna

You can hijack a global that you don't use like S, C or T instead of E to avoid that initial "ReferenceError: E is not defined" error.
u/MrM@_S

oh thanks


      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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