code: function init$15() {
  
          /* Place parameters in static storage for common use
           -------------------------------------------------*/
          this.sin_p14 = Math.sin(this.lat0);
          this.cos_p14 = Math.cos(this.lat0);
          // Approximation for projecting points to the horizon (infinity)
          this.infinity_dist = 1000 * this.a;
          this.rc = 1;
      }
docs: /*
  reference:
  Wolfram Mathworld "Gnomonic Projection"
  http://mathworld.wolfram.com/GnomonicProjection.html
  Accessed: 12th November 2009