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[FrontAlgorithms.git] / lib / fpa / Base / RegionGrow.hxx
1 // =========================================================================
2 // @author Leonardo Florez Valencia
3 // @email florez-l@javeriana.edu.co
4 // =========================================================================
5
6 #ifndef __fpa__Base__RegionGrow__hxx__
7 #define __fpa__Base__RegionGrow__hxx__
8
9 // -------------------------------------------------------------------------
10 template< class _TAlgorithm >
11 itk::ModifiedTimeType fpa::Base::RegionGrow< _TAlgorithm >::
12 GetMTime( ) const
13 {
14   itk::ModifiedTimeType t = this->Superclass::GetMTime( );
15   if( this->m_ValuePredicate.IsNotNull( ) )
16   {
17     itk::ModifiedTimeType q = this->m_ValuePredicate->GetMTime( );
18     t = ( q < t )? q: t;
19
20   } // fi
21   if( this->m_VertexPredicate.IsNotNull( ) )
22   {
23     itk::ModifiedTimeType q = this->m_VertexPredicate->GetMTime( );
24     t = ( q < t )? q: t;
25
26   } // fi
27
28   return( t );
29 }
30
31 // -------------------------------------------------------------------------
32 template< class _TAlgorithm >
33 typename fpa::Base::RegionGrow< _TAlgorithm >::
34 TOutputValue fpa::Base::RegionGrow< _TAlgorithm >::
35 GetOutsideValue( ) const
36 {
37   return( this->GetInitValue( ) );
38 }
39
40 // -------------------------------------------------------------------------
41 template< class _TAlgorithm >
42 void fpa::Base::RegionGrow< _TAlgorithm >::
43 SetOutsideValue( const TOutputValue& v )
44 {
45   this->SetInitValue( v );
46 }
47
48 // -------------------------------------------------------------------------
49 template< class _TAlgorithm >
50 void fpa::Base::RegionGrow< _TAlgorithm >::
51 SetPredicate( TValuePredicate* p )
52 {
53   if( this->m_ValuePredicate.GetPointer( ) != p )
54   {
55     this->m_ValuePredicate = p;
56     this->Modified( );
57
58   } // fi
59 }
60
61 // -------------------------------------------------------------------------
62 template< class _TAlgorithm >
63 void fpa::Base::RegionGrow< _TAlgorithm >::
64 SetPredicate( TVertexPredicate* p )
65 {
66   if( this->m_VertexPredicate.GetPointer( ) != p )
67   {
68     this->m_VertexPredicate = p;
69     this->Modified( );
70
71   } // fi
72 }
73
74 // -------------------------------------------------------------------------
75 template< class _TAlgorithm >
76 fpa::Base::RegionGrow< _TAlgorithm >::
77 RegionGrow( )
78   : Superclass( ),
79     m_InsideValue( TOutputValue( 1 ) )
80 {
81   this->SetInitValue( TOutputValue( 0 ) );
82 }
83
84 // -------------------------------------------------------------------------
85 template< class _TAlgorithm >
86 fpa::Base::RegionGrow< _TAlgorithm >::
87 ~RegionGrow( )
88 {
89 }
90
91 // -------------------------------------------------------------------------
92 template< class _TAlgorithm >
93 bool fpa::Base::RegionGrow< _TAlgorithm >::
94 _ComputeOutputValue( TNode& n )
95 {
96   TInputValue value = this->_GetInputValue( n.Vertex );
97   bool inside = false;
98   if( this->m_ValuePredicate.IsNotNull( ) )
99     inside = this->m_ValuePredicate->Evaluate( value );
100   if( this->m_VertexPredicate.IsNotNull( ) )
101     inside &= this->m_VertexPredicate->Evaluate( n.Vertex );
102   n.Value = ( inside )? this->m_InsideValue: this->m_InitValue;
103   return( inside );
104 }
105
106 // -------------------------------------------------------------------------
107 template< class _TAlgorithm >
108 void fpa::Base::RegionGrow< _TAlgorithm >::
109 _QueueClear( )
110 {
111   this->m_Queue.clear( );
112 }
113
114 // -------------------------------------------------------------------------
115 template< class _TAlgorithm >
116 typename fpa::Base::RegionGrow< _TAlgorithm >::
117 TNode fpa::Base::RegionGrow< _TAlgorithm >::
118 _QueuePop( )
119 {
120   TNode n = this->m_Queue.front( );
121   this->m_Queue.pop_front( );
122   return( n );
123 }
124
125 // -------------------------------------------------------------------------
126 template< class _TAlgorithm >
127 void fpa::Base::RegionGrow< _TAlgorithm >::
128 _QueuePush( const TNode& node )
129 {
130   this->m_Queue.push_back( node );
131 }
132
133 // -------------------------------------------------------------------------
134 template< class _TAlgorithm >
135 unsigned long fpa::Base::RegionGrow< _TAlgorithm >::
136 _QueueSize( ) const
137 {
138   return( this->m_Queue.size( ) );
139 }
140
141 // -------------------------------------------------------------------------
142 template< class _TAlgorithm >
143 void fpa::Base::RegionGrow< _TAlgorithm >::
144 _PrepareSeeds( TNodes& nodes )
145 {
146   typename TNodes::iterator nIt = nodes.begin( );
147   for( ; nIt != nodes.end( ); ++nIt )
148     nIt->Value = this->m_InsideValue;
149 }
150
151 #endif // __fpa__Base__RegionGrow__hxx__
152
153 // eof - $RCSfile$