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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004-2016 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
#ifndef __VCGLIB_IMPORT_ASC
#define __VCGLIB_IMPORT_ASC
#include <stdio.h>
#include <fstream>
#include <iostream>
#include <vcg/complex/algorithms/create/platonic.h>
#include <vcg/complex/algorithms/clean.h>
namespace vcg {
namespace tri {
namespace io {
/**
This class encapsulate a filter for importing raw format pointcloud.
there exists many raw formats. each one with a particular sintax even if they only contains
*/
template <class MESH_TYPE>
class ImporterASC
{
public:
typedef typename MESH_TYPE::VertexPointer VertexPointer;
typedef typename MESH_TYPE::ScalarType ScalarType;
typedef typename MESH_TYPE::VertexType VertexType;
typedef typename MESH_TYPE::FaceType FaceType;
typedef typename MESH_TYPE::VertexIterator VertexIterator;
typedef typename MESH_TYPE::FaceIterator FaceIterator;
enum RAWError {
E_NOERROR, // 0
// Error open
E_CANTOPEN, // 1
E_UNESPECTEDEOF, // 2
E_NO_POINTS, //3
};
static const char *ErrorMsg(int error)
{
static const char * raw_error_msg[] =
{
"No errors",
"Can't open file",
"Premature End of file",
"Failed to import any point. Use simple ascii files with just x y z coords."
};
if(error>3 || error<0) return "Unknown error";
else return raw_error_msg[error];
};
/*!
* Standard call for reading a mesh
* \param m the destination mesh
* \param filename the name of the file to read from
* \param triangulate if true, the mesh will be triangulated, otherwise only points will be stored
* \param lineskip number of lines to be skipped at the begin of the file
* \return the operation result
*/
static int Open( MESH_TYPE &m, const char * filename, CallBackPos *cb=0, bool triangulate=false, int lineskip=0)
{
FILE *fp;
fp = fopen(filename, "r");
if(fp == NULL)
{
qDebug("Failed opening of %s",filename);
return E_CANTOPEN;
}
long currentPos = ftell(fp);
fseek(fp,0L,SEEK_END);
long fileLen = ftell(fp);
fseek(fp,currentPos,SEEK_SET);
m.Clear();
Point3f pp;
float q;
size_t cnt=0;
int ret;
char buf[1024];
// skip the first <lineskip> lines
for(int i=0;i<lineskip;++i)
fgets(buf,1024,fp);
/* Read a single triplet of coords from an ASCII file of coords*/
while(!feof(fp))
{
if(cb && (++cnt)%1000) cb( (ftell(fp)*100)/fileLen, "ASC Mesh Loading");
if(feof(fp)) break;
bool fgetOut=fgets(buf,1024,fp);
if( fgetOut == 0 ) continue;
ret=sscanf(buf, "%f, %f, %f, %f\n", &pp.X(), &pp.Y(), &pp.Z(),&q);
if(ret==1) // lets try also non comma separated values
ret=sscanf(buf, "%f %f %f %f\n", &pp.X(), &pp.Y(), &pp.Z(),&q);
if(ret>=3)
{
VertexIterator vi=Allocator<MESH_TYPE>::AddVertices(m,1);
(*vi).P().Import(pp);
if(ret==4) (*vi).Q()=q;
}
}
fclose(fp);
if(m.vn==0) return E_NO_POINTS;
if(!triangulate) return E_NOERROR;
// now try to triangulate.
// search for the first jump
float baseY = m.vert[0].P().Y();
unsigned int i;
for(i=1;i<m.vert.size();++i)
{
if(m.vert[i].P().Y()!= baseY) break;
}
cnt=m.vert.size();
qDebug("Grid is %i x %i = %i (%zu) ",i,cnt/i,i* (cnt/i),cnt);
tri::FaceGrid(m,i,int(cnt/i));
tri::Clean<MESH_TYPE>::FlipMesh(m);
return E_NOERROR;
}
}; // end class
} // end Namespace tri
} // end Namespace io
} // end Namespace vcg
#endif
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