EuclidianDistance.h

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00001 /*
00002  * This program is free software; you can redistribute it and/or modify
00003  * it under the terms of the GNU General Public License as published by
00004  * the Free Software Foundation; either version 3 of the License, or
00005  * (at your option) any later version.
00006  *
00007  * Written (W) 2007-2009 Soeren Sonnenburg
00008  * Copyright (C) 2007-2009 Fraunhofer Institute FIRST and Max-Planck-Society
00009  */
00010 
00011 #ifndef _EUCLIDIANDISTANCE_H__
00012 #define _EUCLIDIANDISTANCE_H__
00013 
00014 #include "lib/common.h"
00015 #include "distance/RealDistance.h"
00016 #include "features/SimpleFeatures.h"
00017 
00041 class CEuclidianDistance: public CRealDistance
00042 {
00043     public:
00045         CEuclidianDistance();
00046 
00052         CEuclidianDistance(CSimpleFeatures<float64_t>* l, CSimpleFeatures<float64_t>* r);
00053         virtual ~CEuclidianDistance();
00054 
00061         virtual bool init(CFeatures* l, CFeatures* r);
00062 
00064         virtual void cleanup();
00065 
00071         virtual bool load_init(FILE* src);
00072 
00078         virtual bool save_init(FILE* dest);
00079 
00084         virtual EDistanceType get_distance_type() { return D_EUCLIDIAN; }
00085 
00090         inline virtual EFeatureType get_feature_type() { return F_DREAL; }
00091 
00096         virtual const char* get_name() const { return "Euclidian"; }
00097 
00103         virtual bool get_disable_sqrt() { return disable_sqrt; };
00104 
00110         virtual void set_disable_sqrt(bool state) { disable_sqrt=state; };
00111 
00112     protected:
00116         virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00117         /*    compute_kernel*/
00118 
00119     protected:
00121         float64_t scale;
00123         bool disable_sqrt;
00124 };
00125 
00126 #endif /* _EUCLIDIANDISTANCE_H__ */

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