p5.prototype.Line (line 7925 on v0.5.7) - why copy arguments[] into a new args[] array?

jaschanarveson — Sun, 19 Mar 2017 12:25:40 +0000

I'm looking at the source code for p5.js, in particular at the p5.prototype.Line function, which starts by taking the arguments[] array from the function and creating a new Array to copy them in to:

p5.prototype.line = function() {
  if (!this._renderer._doStroke) {
    return this;
  }
  var args = new Array(arguments.length);
  for (var i = 0; i < args.length; ++i) {
    args[i] = arguments[i];
  }

The rest of the function just uses the args[] array without making any changes to it - if that's the case, why copy the arguments[] array instead of just using it directly? I'm sure there's a reason - i would love to know what it is.

cheers,

Where can I edit contributed library source code?

ProJammin — Tue, 26 Jan 2016 06:04:59 +0000

I'm using Minim library and I need to do one of two things: I need to either extend a class in the library, or make some alterations to the minim source code. The problem is: I have no idea how to start a new project in the processing environment so I can extend the class, and I have no idea where the source code is located. I searched through the processing folder in my file system, but it found no instances of Minim. Help please?

Tagged with source code - Processing 2.x and 3.x Forum

p5.prototype.Line (line 7925 on v0.5.7) - why copy arguments[] into a new args[] array?

Where can I edit contributed library source code?