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

Collect progressive mesh information while decimating. More...

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

Inheritance diagram for OpenMesh::Decimater::ModProgMeshT< MeshT >:
Collaboration diagram for OpenMesh::Decimater::ModProgMeshT< MeshT >:

Classes

struct  Info
 Struct storing progressive mesh information. More...
 

Public Types

typedef ModProgMeshT< MeshT > Self
 
typedef OpenMesh::Decimater::ModHandleT< SelfHandle
 
typedef OpenMesh::Decimater::ModBaseT< MeshT > Base
 
typedef Base::Mesh Mesh
 
typedef Base::CollapseInfo CollapseInfo
 
typedef std::vector< InfoInfoList
 Type of the list storing the progressive mesh info Info.
 
- Public Types inherited from OpenMesh::Decimater::ModBaseT< MeshT >
enum  { ILLEGAL_COLLAPSE = -1, LEGAL_COLLAPSE = 0 }
 
typedef MeshT Mesh
 
typedef CollapseInfoT< MeshT > CollapseInfo
 

Public Member Functions

virtual const std::string & name () const override
 Set module's name.
 
 ModProgMeshT (MeshT &_mesh)
 Constructor.
 
 ~ModProgMeshT ()
 Destructor.
 
const InfoListpmi () const
 
void postprocess_collapse (const CollapseInfo &_ci) override
 Stores collapse information in a queue. More...
 
bool is_binary (void) const
 
bool write (const std::string &_ofname)
 Write progressive mesh data to a file in proprietary binary format .pm. More...
 
const InfoListinfolist () const
 Reference to collected information.
 
- Public Member Functions inherited from OpenMesh::Decimater::ModBaseT< MeshT >
virtual ~ModBaseT ()
 Virtual desctructor.
 
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 set_error_tolerance_factor (double _factor)
 This provides a function that allows the setting of a percentage of the original contraint. More...
 

Additional Inherited Members

- Protected Member Functions inherited from OpenMesh::Decimater::ModBaseT< MeshT >
 ModBaseT (MeshT &_mesh, bool _is_binary)
 Default constructor. More...
 
MeshT & mesh ()
 Access the mesh associated with the decimater.
 
- Protected Attributes inherited from OpenMesh::Decimater::ModBaseT< MeshT >
double error_tolerance_factor_
 

Detailed Description

template<class MeshT>
class OpenMesh::Decimater::ModProgMeshT< MeshT >

Collect progressive mesh information while decimating.

The progressive mesh data is stored in an internal structure, which can be evaluated after the decimation process and (!) before calling the garbage collection of the decimated mesh.

Member Function Documentation

◆ postprocess_collapse()

template<class MeshT >
void OpenMesh::Decimater::ModProgMeshT< MeshT >::postprocess_collapse ( const CollapseInfo _ci)
inlineoverridevirtual

Stores collapse information in a queue.

See also
infolist()

Reimplemented from OpenMesh::Decimater::ModBaseT< MeshT >.

◆ write()

template<class MeshT >
bool OpenMesh::Decimater::ModProgMeshT< MeshT >::write ( const std::string &  _ofname)

Write progressive mesh data to a file in proprietary binary format .pm.

The methods uses the collected data to write a progressive mesh file. It's a binary format with little endian byte ordering:

  • The first 8 bytes contain the word "ProgMesh".
  • 32-bit int for the number of vertices NV in the base mesh.
  • 32-bit int for the number of faces in the base mesh.
  • 32-bit int for the number of halfedge collapses (now vertex splits)
  • Positions of vertices of the base mesh (32-bit float triplets).
    [x,y,z][x,y,z]...
  • Triplets of indices (32-bit int) for each triangle (index in the list of vertices of the base mesh defined by the positions.
    [v0,v1,v2][v0,v1,v2]...
  • For each collapse/split a detail information package made of 3 32-bit floats for the positions of vertex v0, and 3 32-bit int indices for v1, vl, and vr. The index for vl or vr might be -1, if the face on this side of the edge does not exists.
Remarks
Write file before calling the garbage collection of the mesh.
Parameters
_ofnameName of the file, where to write the progressive mesh
Returns
true on success of the operation, else false.

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

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