OpenMesh
OpenMesh::Decimater::ModBaseT< MeshT > Class Template Reference

Base class for all decimation modules. More...

#include <OpenMesh/Tools/Decimater/ModBaseT.hh>

Inheritance diagram for OpenMesh::Decimater::ModBaseT< MeshT >:

Public Types

enum  { ILLEGAL_COLLAPSE = -1, LEGAL_COLLAPSE = 0 }
 
typedef MeshT Mesh
 
typedef CollapseInfoT< MeshT > CollapseInfo
 

Public Member Functions

virtual ~ModBaseT ()
 Virtual desctructor.
 
virtual const std::string & name () const
 Set module's name (using DECIMATER_MODNAME macro)
 
bool is_binary (void) const
 Returns true if criteria returns a binary value.
 
void set_binary (bool _b)
 Set whether module is binary or not.
 
virtual void initialize ()
 Initialize module-internal stuff.
 
virtual float collapse_priority (const CollapseInfoT< MeshT > &)
 Return collapse priority. More...
 
virtual void preprocess_collapse (const CollapseInfoT< MeshT > &)
 Before _from_vh has been collapsed into _to_vh, this method will be called.
 
virtual void postprocess_collapse (const CollapseInfoT< MeshT > &)
 After _from_vh has been collapsed into _to_vh, this method will be called.
 
virtual void set_error_tolerance_factor (double _factor)
 This provides a function that allows the setting of a percentage of the original contraint. More...
 

Protected Member Functions

 ModBaseT (MeshT &_mesh, bool _is_binary)
 Default constructor. More...
 
MeshT & mesh ()
 Access the mesh associated with the decimater.
 

Protected Attributes

double error_tolerance_factor_
 

Detailed Description

template<typename MeshT>
class OpenMesh::Decimater::ModBaseT< MeshT >

Base class for all decimation modules.

Each module has to implement this interface. To build your own module you have to

  1. derive from this class.
  2. create the basic settings with DECIMATING_MODULE().
  3. override collapse_priority(), if necessary.
  4. override initialize(), if necessary.
  5. override postprocess_collapse(), if necessary.

A module has two major working modes:

  1. binary mode
  2. non-binary mode

In the binary mode collapse_priority() checks a constraint and returns LEGAL_COLLAPSE or ILLEGAL_COLLAPSE.

In the non-binary mode the module computes a float error value in the range [0, inf) and returns it. In the case a constraint has been set, e.g. the error must be lower than a upper bound, and the constraint is violated, collapse_priority() must return ILLEGAL_COLLAPSE.

See also
collapse_priority()
Todo:
"Tutorial on building a custom decimation module."

Member Enumeration Documentation

◆ anonymous enum

template<typename MeshT>
anonymous enum
Enumerator
ILLEGAL_COLLAPSE 

indicates an illegal collapse

LEGAL_COLLAPSE 

indicates a legal collapse

Constructor & Destructor Documentation

◆ ModBaseT()

template<typename MeshT>
OpenMesh::Decimater::ModBaseT< MeshT >::ModBaseT ( MeshT &  _mesh,
bool  _is_binary 
)
inlineprotected

Default constructor.

See also
Mesh Decimation Framework

Member Function Documentation

◆ collapse_priority()

template<typename MeshT>
virtual float OpenMesh::Decimater::ModBaseT< MeshT >::collapse_priority ( const CollapseInfoT< MeshT > &  )
inlinevirtual

Return collapse priority.

In the binary mode collapse_priority() checks a constraint and returns LEGAL_COLLAPSE or ILLEGAL_COLLAPSE.

In the non-binary mode the module computes a float error value in the range [0, inf) and returns it. In the case a constraint has been set, e.g. the error must be lower than a upper bound, and the constraint is violated, collapse_priority() must return ILLEGAL_COLLAPSE.

Returns
Collapse priority in the range [0,inf), LEGAL_COLLAPSE or ILLEGAL_COLLAPSE.

Reimplemented in OpenMesh::Decimater::ModNormalDeviationT< MeshT >, OpenMesh::Decimater::ModNormalFlippingT< MeshT >, OpenMesh::Decimater::ModHausdorffT< MeshT >, OpenMesh::Decimater::ModRoundnessT< MeshT >, OpenMesh::Decimater::ModQuadricT< MeshT >, OpenMesh::Decimater::ModQuadricT< D >, and OpenMesh::Decimater::ModEdgeLengthT< MeshT >.

◆ set_error_tolerance_factor()

template<typename MeshT>
virtual void OpenMesh::Decimater::ModBaseT< MeshT >::set_error_tolerance_factor ( double  _factor)
inlinevirtual

This provides a function that allows the setting of a percentage of the original contraint.

Note that the module might need to be re-initialized again after setting the percentage

Parameters
_factorhas to be in the closed interval between 0.0 and 1.0

Reimplemented in OpenMesh::Decimater::ModNormalDeviationT< MeshT >, OpenMesh::Decimater::ModRoundnessT< MeshT >, OpenMesh::Decimater::ModNormalFlippingT< MeshT >, OpenMesh::Decimater::ModQuadricT< MeshT >, OpenMesh::Decimater::ModQuadricT< D >, OpenMesh::Decimater::ModHausdorffT< MeshT >, OpenMesh::Decimater::ModAspectRatioT< MeshT >, and OpenMesh::Decimater::ModEdgeLengthT< MeshT >.


The documentation for this class was generated from the following file:

Project OpenMesh, ©  Computer Graphics Group, RWTH Aachen. Documentation generated using doxygen .