From 99cd95402c30a7c91452266aee62fc12e1d7d8bd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=91=D1=8B=D1=87=D0=BA=D0=BE=D0=B2=20=D0=90=D0=BD=D0=B4?=
 =?UTF-8?q?=D1=80=D0=B5=D0=B9?= <andrey@signalmodelling.ru>
Date: Thu, 27 Aug 2015 13:05:28 +0000
Subject: [PATCH] git-svn-id: svn://db.shs.com.ru/pip@150
 12ceb7fc-bf1f-11e4-8940-5bc7170c53b5

---
 src/geo/piellipsoidmodel.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/geo/piellipsoidmodel.h b/src/geo/piellipsoidmodel.h
index db20d80b..e2979b9a 100644
--- a/src/geo/piellipsoidmodel.h
+++ b/src/geo/piellipsoidmodel.h
@@ -29,7 +29,8 @@
 class PIEllipsoidModel {
 public:
 	PIEllipsoidModel();
-	double eccSquared() const { return eccentricity * eccentricity; } // eccentricity squared
+	double eccSquared() const {return eccentricity * eccentricity;} // eccentricity squared
+	double a() const {return a * sqrt(1 - eccSquared());}
 
 	static PIEllipsoidModel WGS84Ellipsoid();
 	static PIEllipsoidModel PZ90Ellipsoid();