ortho done

  /* Initialize the Orthographic projection

    -------------------------------------*/

  init: function(def) {

  init: function() {

    //double temp;			/* temporary variable		*/

    /* Place parameters in static storage for common use

      -------------------------------------------------*/

    ;

    this.sin_p14 = Math.sin(this.lat0);

    this.cos_p14 = Math.cos(this.lat0);

  },

    var dlon; /* delta longitude value			*/

    var coslon; /* cos of longitude				*/

    var ksp; /* scale factor					*/

    var g;

    var g,x,y;

    var lon = p.x;

    var lat = p.y;

    /* Forward equations

    g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;

    ksp = 1.0;

    if ((g > 0) || (Math.abs(g) <= proj4.common.EPSLN)) {

      var x = this.a * ksp * cosphi * Math.sin(dlon);

      var y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);

      x = this.a * ksp * cosphi * Math.sin(dlon);

      y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);

    }

    else {

      proj4.reportError("orthoFwdPointError");

    var rh; /* height above ellipsoid			*/

    var z; /* angle					*/

    var sinz, cosz; /* sin of z and cos of z			*/

    var temp;

    var con;

    var lon, lat;

    /* Inverse equations

    p.x -= this.x0;

    p.y -= this.y0;

    rh = Math.sqrt(p.x * p.x + p.y * p.y);

    if (rh > this.a + .0000001) {

    if (rh > this.a + 0.0000001) {

      proj4.reportError("orthoInvDataError");

    }

    z = proj4.common.asinz(rh / this.a);