Inherit/Use p5.Vector methods in NodeJS

cake · April 18, 2020, 9:26pm

Hello! I’d like to inherit & use p5.Vector & its methods in a class I’m writing. / Use p5.Vector without a window.

This is backend code, I’ve seen that p5 cannot ‘run’ without a ‘window’ object. As it gives me ‘window’ is not defined.

The answer that I’m leaning towards is just having to write my own vector class. Not too bad of a solution, just wondered if anyone else wondered this?

With the p5.Vector class as an example I’ll probably just make my own

jeremydouglass · April 18, 2020, 10:07pm

If you copy p5.Vector.js

github.com

processing/p5.js/blob/master/src/math/p5.Vector.js

/**
 * @module Math
 * @submodule Vector
 * @requires constants
 */

import p5 from '../core/main';
import * as constants from '../core/constants';

/**
 * A class to describe a two or three dimensional vector, specifically
 * a Euclidean (also known as geometric) vector. A vector is an entity
 * that has both magnitude and direction. The datatype, however, stores
 * the components of the vector (x, y for 2D, and x, y, z for 3D). The magnitude
 * and direction can be accessed via the methods <a href="#/p5/mag">mag()</a> and <a href="#/p5/heading">heading()</a>.
 * <br><br>
 * In many of the p5.js examples, you will see <a href="#/p5.Vector">p5.Vector</a> used to describe a
 * position, velocity, or acceleration. For example, if you consider a rectangle
 * moving across the screen, at any given instant it has a position (a vector
 * that points from the origin to its location), a velocity (the rate at which

This file has been truncated. show original

and remove the line

import p5 from '../core/main';

…what breaks?

jeremydouglass · April 18, 2020, 10:14pm

Another option – use headless chrome, the way (I believe?) the project does for CI testing through mocha on Node.js 12.x.

Possibly see also:

GoToLoop · April 18, 2020, 10:19pm

cake · April 18, 2020, 10:34pm

Both of these are great resources thank you!