added a getPoint method to TopocentricFrame

src/main/java/org/orekit/frames/TopocentricFrame.java

@@ -78,6 +78,13 @@ public class TopocentricFrame extends Frame implements PVCoordinatesProvider {
         return parentShape;
     }
 
+    /** Get the surface point defining the origin of the frame.
+     * @return surface point defining the origin of the frame
+     */
+    public GeodeticPoint getPoint() {
+        return point;
+    }
+
     /** Get the zenith direction of topocentric frame, expressed in parent shape frame.
      * <p>The zenith direction is defined as the normal to local horizontal plane.</p>
      * @return unit vector in the zenith direction

src/site/xdoc/changes.xml

@@ -25,6 +25,9 @@
       <action dev="luc" type="add">
         added the UT1, TCB and GMST time scales used in CCSDS Orbit Data Messages
       </action>
+      <action dev="luc" type="add">
+        added a getPoint method to TopocentricFrame
+      </action>
       <action dev="luc" type="fix">
         fixed a dut1 interpolation error for the day just before a leap second introduction
       </action>

src/test/java/org/orekit/frames/TopocentricFrameTest.java

@@ -110,6 +110,10 @@ public class TopocentricFrameTest {
         // First point at latitude 45°
         final GeodeticPoint point1 = new GeodeticPoint(FastMath.toRadians(45.), FastMath.toRadians(30.), 0.);
         final TopocentricFrame topoFrame1 = new TopocentricFrame(earthSpheric, point1, "lon 30");
+        final GeodeticPoint p1 = topoFrame1.getPoint();
+        Assert.assertEquals(point1.getLatitude(), p1.getLatitude(), 1.0e-15);
+        Assert.assertEquals(point1.getLongitude(), p1.getLongitude(), 1.0e-15);
+        Assert.assertEquals(point1.getAltitude(), p1.getAltitude(), 1.0e-15);
         
         // Second point at latitude -45° and same longitude
         final GeodeticPoint point2 = new GeodeticPoint(FastMath.toRadians(45.), FastMath.toRadians(210.), 0.);