Method _makeTriangleEdges

src/webgl/p5.Geometry.js:1293–1303

* Create a 2D array for establishing stroke connections * @private * @chainable

()

   * @chainable
   */
  _makeTriangleEdges() {
    this.edges.length = 0;

    for (let j = 0; j < this.faces.length; j++) {
      this.edges.push([this.faces[j][0], this.faces[j][1]]);
      this.edges.push([this.faces[j][1], this.faces[j][2]]);
      this.edges.push([this.faces[j][2], this.faces[j][0]]);
    }

    return this;
  }

  /**
   * @example