lcsim/src/org/lcsim/util/swim
diff -u -r1.4 -r1.5
--- HelixSwim.java 14 May 2005 00:26:55 -0000 1.4
+++ HelixSwim.java 3 Aug 2005 22:53:37 -0000 1.5
@@ -2,6 +2,8 @@
import java.util.ArrayList;
import java.util.List;
import org.lcsim.event.Track;
+import org.lcsim.spacegeom.CartesianPoint;
+import org.lcsim.spacegeom.SpacePoint;
/**
* Given a particle of initial momentum, position and charge
@@ -11,7 +13,7 @@
* This implementation works for charged and neutral particles alike.
*
* @author W.Walkowiak
- * @version $Id: HelixSwim.java,v 1.4 2005/05/14 00:26:55 tonyj Exp $
+ * @version $Id: HelixSwim.java,v 1.5 2005/08/03 22:53:37 jstrube Exp $
*/
public class HelixSwim
{
@@ -108,9 +110,21 @@
/**
+ * Swims the track to a point at a distance alpha
+ * @param alpha The length parameter
+ * @return The point at a length alpha from the origin
+ */
+ // FIXME the parameter alpha is not well defined
+ public SpacePoint getPointAtLength(double alpha) {
+ return new CartesianPoint(swimBy(alpha));
+ }
+
+ /**
* swim along this track to point at distance alpha from it's origin
* (in positive track direction)
+ * @deprecated in favor of @see getPointAtLength
*/
+ @Deprecated
public double[] swimBy(double alpha)
{
if ( alpha != m_alpha || !centerOK ) isValid = false;
