From d256abfaaf16ccb003ea2c508a9505f032cdbbd5 Mon Sep 17 00:00:00 2001
From: ganovelli <fabio.ganovelli@isti.cnr.it>
Date: Wed, 21 Dec 2011 16:15:32 +0000
Subject: [PATCH] added PointScaledDistanceFunctor

---
 vcg/simplex/vertex/distance.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/vcg/simplex/vertex/distance.h b/vcg/simplex/vertex/distance.h
index 131a312b..f3e437d1 100644
--- a/vcg/simplex/vertex/distance.h
+++ b/vcg/simplex/vertex/distance.h
@@ -105,6 +105,32 @@ class PointNormalDistanceFunctor {
 		}
 	};
 
+template <class VERTEXYPE>
+class PointScaledDistanceFunctor {
+	public:
+		typedef typename VERTEXYPE::ScalarType ScalarType;
+		typedef Point3<ScalarType> QueryType;
+		static inline const Point3<ScalarType> &  Pos(const QueryType & qt)  {return qt;}
+
+		static Point3<ScalarType> & Cen(){static Point3<ScalarType> cen(0,0,0); return cen;}
+
+		 
+		inline bool operator () (const VERTEXYPE & p, const QueryType & qp, ScalarType & minDist, Point3<ScalarType> & q) {
+
+			Point3<ScalarType> ed = (qp-p.P());
+			Point3<ScalarType> dir = (p.P()-Cen()).Normalize();
+			Point3<ScalarType> odir =  (dir^((ed)^dir)).Normalize();
+			ScalarType d = fabs(ed * dir) + fabs(ed  *odir);
+			
+			if(d < minDist){
+				minDist = d;
+				q = p.P();
+				return true;
+			}
+			return false;
+		}
+	};
+
 template <class VertexType>
 class ApproximateGeodesicDistanceFunctor {
   public: