CompositeT.hh

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//=============================================================================
//
//  CLASS CompositeT
//
//=============================================================================

#ifndef OPENMESH_SUBDIVIDER_ADAPTIVE_COMPOSITET_HH
#define OPENMESH_SUBDIVIDER_ADAPTIVE_COMPOSITET_HH


//== INCLUDES =================================================================

#include <OpenMesh/Core/System/config.hh>
#include <OpenMesh/Tools/Subdivider/Adaptive/Composite/CompositeTraits.hh>
// --------------------
#include <vector>
#include <memory>
#include <string>


//== NAMESPACE ================================================================

namespace OpenMesh   { // BEGIN_NS_OPENMESH
namespace Subdivider { // BEGIN_NS_SUBDIVIDER
namespace Adaptive   { // BEGIN_NS_ADAPTIVE


//== CLASS DEFINITION =========================================================


template <typename R> struct RuleHandleT;
template <typename M> class  RuleInterfaceT;


//== CLASS DEFINITION =========================================================

template <typename M> class CompositeT
{
public:

  typedef RuleInterfaceT<M>  Rule;
  typedef M                  Mesh;
  typedef std::vector<Rule*> RuleSequence;

  typedef typename M::VertexHandle   VH;
  typedef typename M::FaceHandle     FH;
  typedef typename M::EdgeHandle     EH;
  typedef typename M::HalfedgeHandle HH;

public:

  CompositeT(Mesh& _mesh) 
    : subdiv_type_(0), 
      subdiv_rule_(NULL), /*first_rule_(NULL), last_rule_(NULL),*/ mesh_(_mesh)
  { }

  virtual ~CompositeT() 
  { cleanup(); }


  void cleanup(void)
  {
    subdiv_type_ = 0;
    subdiv_rule_ = NULL;

    std::for_each(rule_sequence_.begin(), 
                  rule_sequence_.end(), DeleteRule() );
    rule_sequence_.clear();
  }


  bool initialize(void);

  
  void refine(typename M::FaceHandle& _fh);


  void refine(typename M::VertexHandle& _vh);


  int subdiv_type() { return subdiv_type_; }


  // Return subdivision rule.
  const Rule& subdiv_rule() const { return *subdiv_rule_; }

public:

  //*@

  template < typename R >
  RuleHandleT<R> add()
  {
    size_t idx = rule_sequence_.size();
    rule_sequence_.push_back( new R( mesh_ ) );
    return RuleHandleT<R>( (idx < rule_sequence_.size()) ? idx : -1 );
  }

  template < typename R >
  RuleHandleT<R>& add( RuleHandleT<R>& _rh )
  {
    return _rh = add< R >();
  }

  template < typename R >
  typename RuleHandleT<R>::Rule& rule( const RuleHandleT<R>& _rh )
  {
    typedef typename RuleHandleT<R>::Rule rule_t;
    assert( _rh.is_valid() );
    return *dynamic_cast<rule_t*>(rule_sequence_[ _rh.idx() ]);
  }


  RuleInterfaceT<M>& rule( size_t _idx )
  {
    assert( _idx < n_rules() );
    return *rule_sequence_[ _idx ];
  }

  size_t n_rules() const { return rule_sequence_.size(); }

  std::string rules_as_string(const std::string& _sep= " * ") const;


protected:

  const RuleSequence& rules() const { return rule_sequence_; }

protected: // helper

  // get current generation from state
  state_t generation(state_t _s) { return _s-(_s % n_rules()); }
  state_t generation( VH _vh ) { return generation(mesh_.data(_vh).state()); }
  state_t generation( EH _eh ) { return generation(mesh_.data(_eh).state()); }
  state_t generation( FH _fh ) { return generation(mesh_.data(_fh).state()); }

private:

  // short cuts
  Rule* t_rule() { return subdiv_rule_;           }
  Rule* f_rule() { return rule_sequence_.front(); }
  Rule* l_rule() { return rule_sequence_.back();  }

private:

  // 
  RuleSequence rule_sequence_;

  // Split type
  int   subdiv_type_;

  Rule  *subdiv_rule_;
//   Rule  *first_rule_; 
//   Rule  *last_rule_;

  //
  Mesh  &mesh_;

private: // helper

#ifndef DOXY_IGNORE_THIS
  struct DeleteRule { void operator()( Rule* _r ) { delete _r; } };
#endif

private:

  CompositeT( const CompositeT& );
  CompositeT& operator = ( const CompositeT );

};

   
//=============================================================================
} // END_NS_ADAPTIVE
} // END_NS_SUBDIVIDER
} // END_NS_OPENMESH
//=============================================================================
#if defined(OM_INCLUDE_TEMPLATES) && !defined(OPENMESH_SUBDIVIDER_ADAPTIVE_COMPOSITET_CC)
#  define OPENMESH_SUBDIVIDER_TEMPLATES
#  include "CompositeT.cc"
#endif
//=============================================================================
#endif // OPENMESH_SUBDIVIDER_ADAPTIVE_COMPOSITET_HH defined
//=============================================================================