| OpenMesh

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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 >:
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Collaboration diagram for OpenMesh::Decimater::ModProgMeshT< MeshT >:
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## Classes
struct | Info
| Struct storing progressive mesh information. More...

## Public Types
typedef ModProgMeshT< MeshT > | Self
typedef OpenMesh::Decimater::ModHandleT< Self > | Handle
typedef OpenMesh::Decimater::ModBaseT< MeshT > | Base
typedef Base::Mesh | Mesh
typedef Base::CollapseInfo | CollapseInfo
typedef std::vector< Info > | InfoList
| 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 InfoList & | pmi () 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 InfoList & | infolist () 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 | ) |
| inline override virtual

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

  _ofname | Name 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:

- OpenMesh/Tools/Decimater/ModProgMeshT.hh
- OpenMesh/Tools/Decimater/ModProgMeshT_impl.hh