vcglib/wrap/io_trimesh/io_ply.h

/****************************************************************************
* VCGLib                                                            o o     *
* Visual and Computer Graphics Library                            o     o   *
*                                                                _   O  _   *
* Copyright(C) 2004-2016                                           \/)\/    *
* Visual Computing Lab                                            /\/|      *
* ISTI - Italian National Research Council                           |      *
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* All rights reserved.                                                      *
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* This program is distributed in the hope that it will be useful,           *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
* for more details.                                                         *
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  History

$Log: not supported by cvs2svn $
Revision 1.3  2004/05/12 10:19:30  ganovelli
new line added at the end of file

Revision 1.2  2004/03/09 21:26:47  cignoni
cr lf mismatch

Revision 1.1  2004/03/08 09:21:34  cignoni
Initial commit

Revision 1.1  2004/03/03 15:00:51  cignoni
Initial commit

****************************************************************************/
#ifndef __VCGLIB_IOTRIMESH_IO_PLY
#define __VCGLIB_IOTRIMESH_IO_PLY


/**
@name Load and Save in Ply format
*/
//@{
#include<wrap/callback.h>
#include<wrap/ply/plylib.h>

namespace vcg {
namespace tri {
namespace io {



  
/** Additional data needed or useful for parsing a ply mesh.
This class can be passed to the ImporterPLY::Open() function for 
- retrieving additional per-vertex per-face data
- specifying a callback for long ply parsing
- knowing what data is  contained in a ply file
*/
class PlyInfo
{
public:
  typedef ::vcg::ply::PropDescriptor PropDescriptor ;
    
  void AddPerElemFloatAttribute(int elemType, const char *attrName, const char * propName=0)
  {
    static const char *elemStr[2]={"vertex","face"};
    static std::vector<PropDescriptor> *elemDescVec[2]={&(this->VertDescriptorVec), &(this->FaceDescriptorVec)};
    static std::vector<std::string   > *elemNameVec[2]={&(this->VertAttrNameVec),   &(this->FaceAttrNameVec)};
        
    if(propName==0) propName=attrName;
    elemDescVec[elemType]->push_back(PropDescriptor());
    elemNameVec[elemType]->push_back(attrName);
    elemDescVec[elemType]->back().elemname=elemStr[elemType];
    elemDescVec[elemType]->back().propname=strdup(propName);
    elemDescVec[elemType]->back().stotype1 = vcg::ply::T_FLOAT;
    elemDescVec[elemType]->back().memtype1 = vcg::ply::T_FLOAT;
  }
  
  void AddPerVertexFloatAttribute(const char *attrName, const char *propName=0) { 
    AddPerElemFloatAttribute(0,attrName,propName);     
  }
  void AddPerFaceFloatAttribute(const char *attrName, const char *propName=0) { 
    AddPerElemFloatAttribute(1,attrName,propName);     
  }
  
  
  /* Note that saving a per vertex point3 attribute is a mess. 
   * Actually require to allocate 3 float attribute and save them. And they are never deallocated... */
  template<class MeshType>
  void AddPerVertexPoint3fAttribute(MeshType &m, const char *attrName, const char *propName="")
  {
    if(propName==0) propName=attrName;
    
    const char *attrxyz[3] = {
      strdup((std::string(attrName)+std::string("_x")).c_str()),
      strdup((std::string(attrName)+std::string("_y")).c_str()),
      strdup((std::string(attrName)+std::string("_z")).c_str()),
    };
    typename MeshType::template PerVertexAttributeHandle <vcg::Point3f> 
        ht = vcg::tri::Allocator<MeshType>:: template GetPerVertexAttribute <vcg::Point3f> (m,attrName);
    
    typename MeshType::template PerVertexAttributeHandle <float> htt[3];
  
    for(int i=0;i<3;++i)
    { 
      htt[i] = vcg::tri::Allocator<MeshType>:: template GetPerVertexAttribute<float> (m,std::string(attrxyz[i]));
      ForEachVertex (m, [&](typename MeshType::VertexType &v) {
        htt[i][v] = ht[v][i];
      });    
      AddPerVertexFloatAttribute(attrxyz[i]);      
    }
  }
  
  
  PlyInfo()
  {
    status=0;
    mask=0;
    cb=0;    
  }
  /// Store the error codes enconutered when parsing a ply
  int status;
  /// It returns a bit mask describing the field preesnt in the ply file
  int mask;  

  /// a Simple callback that can be used for long ply parsing. 
  // it returns the current position, and formats a string with a description of what th efunction is doing (loading vertexes, faces...)
  CallBackPos *cb;

  /// The additional vertex descriptor that a user can specify to load additional per-vertex non-standard data stored in a ply
  std::vector<PropDescriptor> VertDescriptorVec;
  /// AttributeName is an array, externally allocated, containing the names of the attributes to be saved (loaded). 
  /// We assume that AttributeName[], if not empty, is exactly of the same size of VertexdData[]
  /// If AttributeName[i] is not empty we use it to retrieve/store the info instead of the offsetted space in the current vertex
  std::vector<std::string> VertAttrNameVec; 
  
  /// The additional vertex descriptor that a user can specify to load additional per-face non-standard data stored in a ply
  std::vector<PropDescriptor> FaceDescriptorVec;
  std::vector<std::string> FaceAttrNameVec; 

  /// a string containing the current ply header. Useful for showing it to the user.
  std::string header;

enum Error
{
		// Funzioni superiori
  E_NO_VERTEX       = ply::E_MAXPLYERRORS+1,			// 14
	E_NO_FACE         = ply::E_MAXPLYERRORS+2,				// 15
	E_SHORTFILE       = ply::E_MAXPLYERRORS+3,			// 16
	E_NO_3VERTINFACE  = ply::E_MAXPLYERRORS+4,		// 17
	E_BAD_VERT_INDEX  = ply::E_MAXPLYERRORS+5,		// 18
	E_NO_6TCOORD      = ply::E_MAXPLYERRORS+6,			// 19
	E_DIFFER_COLORS   = ply::E_MAXPLYERRORS+7,	
	E_BAD_VERT_INDEX_EDGE  = ply::E_MAXPLYERRORS+8,		// 18
  E_MAXPLYINFOERRORS= ply::E_MAXPLYERRORS+9// 20
};

}; // end class
} // end namespace tri
} // end namespace io
} // end namespace vcg
#endif