364 lines
13 KiB
C++
364 lines
13 KiB
C++
|
// This file is part of libigl, a simple c++ geometry processing library.
|
||
|
|
//
|
||
|
|
// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
|
||
|
|
//
|
||
|
|
// This Source Code Form is subject to the terms of the Mozilla Public License
|
||
|
|
// v. 2.0. If a copy of the MPL was not distributed with this file, You can
|
||
|
|
// obtain one at http://mozilla.org/MPL/2.0/.
|
||
|
|
#include "readOBJ.h"
|
||
|
|
|
||
|
|
#include "list_to_matrix.h"
|
||
|
|
#include "max_size.h"
|
||
|
|
#include "min_size.h"
|
||
|
|
|
||
|
|
#include <iostream>
|
||
|
|
#include <cstdio>
|
||
|
|
#include <fstream>
|
||
|
|
#include <sstream>
|
||
|
|
#include <iterator>
|
||
|
|
|
||
|
|
template <typename Scalar, typename Index>
|
||
|
|
IGL_INLINE bool igl::readOBJ(
|
||
|
|
const std::string obj_file_name,
|
||
|
|
std::vector<std::vector<Scalar > > & V,
|
||
|
|
std::vector<std::vector<Scalar > > & TC,
|
||
|
|
std::vector<std::vector<Scalar > > & N,
|
||
|
|
std::vector<std::vector<Index > > & F,
|
||
|
|
std::vector<std::vector<Index > > & FTC,
|
||
|
|
std::vector<std::vector<Index > > & FN)
|
||
|
|
{
|
||
|
|
// Open file, and check for error
|
||
|
|
FILE * obj_file = fopen(obj_file_name.c_str(),"r");
|
||
|
|
if(NULL==obj_file)
|
||
|
|
{
|
||
|
|
fprintf(stderr,"IOError: %s could not be opened...\n",
|
||
|
|
obj_file_name.c_str());
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return igl::readOBJ(obj_file,V,TC,N,F,FTC,FN);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename Scalar, typename Index>
|
||
|
|
IGL_INLINE bool igl::readOBJ(
|
||
|
|
FILE * obj_file,
|
||
|
|
std::vector<std::vector<Scalar > > & V,
|
||
|
|
std::vector<std::vector<Scalar > > & TC,
|
||
|
|
std::vector<std::vector<Scalar > > & N,
|
||
|
|
std::vector<std::vector<Index > > & F,
|
||
|
|
std::vector<std::vector<Index > > & FTC,
|
||
|
|
std::vector<std::vector<Index > > & FN)
|
||
|
|
{
|
||
|
|
// File open was successful so clear outputs
|
||
|
|
V.clear();
|
||
|
|
TC.clear();
|
||
|
|
N.clear();
|
||
|
|
F.clear();
|
||
|
|
FTC.clear();
|
||
|
|
FN.clear();
|
||
|
|
|
||
|
|
// variables and constants to assist parsing the .obj file
|
||
|
|
// Constant strings to compare against
|
||
|
|
std::string v("v");
|
||
|
|
std::string vn("vn");
|
||
|
|
std::string vt("vt");
|
||
|
|
std::string f("f");
|
||
|
|
std::string tic_tac_toe("#");
|
||
|
|
#ifndef IGL_LINE_MAX
|
||
|
|
# define IGL_LINE_MAX 2048
|
||
|
|
#endif
|
||
|
|
|
||
|
|
char line[IGL_LINE_MAX];
|
||
|
|
int line_no = 1;
|
||
|
|
while (fgets(line, IGL_LINE_MAX, obj_file) != NULL)
|
||
|
|
{
|
||
|
|
char type[IGL_LINE_MAX];
|
||
|
|
// Read first word containing type
|
||
|
|
if(sscanf(line, "%s",type) == 1)
|
||
|
|
{
|
||
|
|
// Get pointer to rest of line right after type
|
||
|
|
char * l = &line[strlen(type)];
|
||
|
|
if(type == v)
|
||
|
|
{
|
||
|
|
std::istringstream ls(&line[1]);
|
||
|
|
std::vector<Scalar > vertex{ std::istream_iterator<Scalar >(ls), std::istream_iterator<Scalar >() };
|
||
|
|
|
||
|
|
if (vertex.size() < 3)
|
||
|
|
{
|
||
|
|
fprintf(stderr,
|
||
|
|
"Error: readOBJ() vertex on line %d should have at least 3 coordinates",
|
||
|
|
line_no);
|
||
|
|
fclose(obj_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
V.push_back(vertex);
|
||
|
|
}else if(type == vn)
|
||
|
|
{
|
||
|
|
double x[3];
|
||
|
|
int count =
|
||
|
|
sscanf(l,"%lf %lf %lf\n",&x[0],&x[1],&x[2]);
|
||
|
|
if(count != 3)
|
||
|
|
{
|
||
|
|
fprintf(stderr,
|
||
|
|
"Error: readOBJ() normal on line %d should have 3 coordinates",
|
||
|
|
line_no);
|
||
|
|
fclose(obj_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
std::vector<Scalar > normal(count);
|
||
|
|
for(int i = 0;i<count;i++)
|
||
|
|
{
|
||
|
|
normal[i] = x[i];
|
||
|
|
}
|
||
|
|
N.push_back(normal);
|
||
|
|
}else if(type == vt)
|
||
|
|
{
|
||
|
|
double x[3];
|
||
|
|
int count =
|
||
|
|
sscanf(l,"%lf %lf %lf\n",&x[0],&x[1],&x[2]);
|
||
|
|
if(count != 2 && count != 3)
|
||
|
|
{
|
||
|
|
fprintf(stderr,
|
||
|
|
"Error: readOBJ() texture coords on line %d should have 2 "
|
||
|
|
"or 3 coordinates (%d)",
|
||
|
|
line_no,count);
|
||
|
|
fclose(obj_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
std::vector<Scalar > tex(count);
|
||
|
|
for(int i = 0;i<count;i++)
|
||
|
|
{
|
||
|
|
tex[i] = x[i];
|
||
|
|
}
|
||
|
|
TC.push_back(tex);
|
||
|
|
}else if(type == f)
|
||
|
|
{
|
||
|
|
const auto & shift = [&V](const int i)->int
|
||
|
|
{
|
||
|
|
return i<0 ? i+V.size() : i-1;
|
||
|
|
};
|
||
|
|
const auto & shift_t = [&TC](const int i)->int
|
||
|
|
{
|
||
|
|
return i<0 ? i+TC.size() : i-1;
|
||
|
|
};
|
||
|
|
const auto & shift_n = [&N](const int i)->int
|
||
|
|
{
|
||
|
|
return i<0 ? i+N.size() : i-1;
|
||
|
|
};
|
||
|
|
std::vector<Index > f;
|
||
|
|
std::vector<Index > ftc;
|
||
|
|
std::vector<Index > fn;
|
||
|
|
// Read each "word" after type
|
||
|
|
char word[IGL_LINE_MAX];
|
||
|
|
int offset;
|
||
|
|
while(sscanf(l,"%s%n",word,&offset) == 1)
|
||
|
|
{
|
||
|
|
// adjust offset
|
||
|
|
l += offset;
|
||
|
|
// Process word
|
||
|
|
long int i,it,in;
|
||
|
|
if(sscanf(word,"%ld/%ld/%ld",&i,&it,&in) == 3)
|
||
|
|
{
|
||
|
|
f.push_back(shift(i));
|
||
|
|
ftc.push_back(shift_t(it));
|
||
|
|
fn.push_back(shift_n(in));
|
||
|
|
}else if(sscanf(word,"%ld/%ld",&i,&it) == 2)
|
||
|
|
{
|
||
|
|
f.push_back(shift(i));
|
||
|
|
ftc.push_back(shift_t(it));
|
||
|
|
}else if(sscanf(word,"%ld//%ld",&i,&in) == 2)
|
||
|
|
{
|
||
|
|
f.push_back(shift(i));
|
||
|
|
fn.push_back(shift_n(in));
|
||
|
|
}else if(sscanf(word,"%ld",&i) == 1)
|
||
|
|
{
|
||
|
|
f.push_back(shift(i));
|
||
|
|
}else
|
||
|
|
{
|
||
|
|
fprintf(stderr,
|
||
|
|
"Error: readOBJ() face on line %d has invalid element format\n",
|
||
|
|
line_no);
|
||
|
|
fclose(obj_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(
|
||
|
|
(f.size()>0 && fn.size() == 0 && ftc.size() == 0) ||
|
||
|
|
(f.size()>0 && fn.size() == f.size() && ftc.size() == 0) ||
|
||
|
|
(f.size()>0 && fn.size() == 0 && ftc.size() == f.size()) ||
|
||
|
|
(f.size()>0 && fn.size() == f.size() && ftc.size() == f.size()))
|
||
|
|
{
|
||
|
|
// No matter what add each type to lists so that lists are the
|
||
|
|
// correct lengths
|
||
|
|
F.push_back(f);
|
||
|
|
FTC.push_back(ftc);
|
||
|
|
FN.push_back(fn);
|
||
|
|
}else
|
||
|
|
{
|
||
|
|
fprintf(stderr,
|
||
|
|
"Error: readOBJ() face on line %d has invalid format\n", line_no);
|
||
|
|
fclose(obj_file);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}else if(strlen(type) >= 1 && (type[0] == '#' ||
|
||
|
|
type[0] == 'g' ||
|
||
|
|
type[0] == 's' ||
|
||
|
|
strcmp("usemtl",type)==0 ||
|
||
|
|
strcmp("mtllib",type)==0))
|
||
|
|
{
|
||
|
|
//ignore comments or other shit
|
||
|
|
}else
|
||
|
|
{
|
||
|
|
//ignore any other lines
|
||
|
|
fprintf(stderr,
|
||
|
|
"Warning: readOBJ() ignored non-comment line %d:\n %s",
|
||
|
|
line_no,
|
||
|
|
line);
|
||
|
|
}
|
||
|
|
}else
|
||
|
|
{
|
||
|
|
// ignore empty line
|
||
|
|
}
|
||
|
|
line_no++;
|
||
|
|
}
|
||
|
|
fclose(obj_file);
|
||
|
|
|
||
|
|
assert(F.size() == FN.size());
|
||
|
|
assert(F.size() == FTC.size());
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename Scalar, typename Index>
|
||
|
|
IGL_INLINE bool igl::readOBJ(
|
||
|
|
const std::string obj_file_name,
|
||
|
|
std::vector<std::vector<Scalar > > & V,
|
||
|
|
std::vector<std::vector<Index > > & F)
|
||
|
|
{
|
||
|
|
std::vector<std::vector<Scalar > > TC,N;
|
||
|
|
std::vector<std::vector<Index > > FTC,FN;
|
||
|
|
return readOBJ(obj_file_name,V,TC,N,F,FTC,FN);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <
|
||
|
|
typename DerivedV,
|
||
|
|
typename DerivedTC,
|
||
|
|
typename DerivedCN,
|
||
|
|
typename DerivedF,
|
||
|
|
typename DerivedFTC,
|
||
|
|
typename DerivedFN>
|
||
|
|
IGL_INLINE bool igl::readOBJ(
|
||
|
|
const std::string str,
|
||
|
|
Eigen::PlainObjectBase<DerivedV>& V,
|
||
|
|
Eigen::PlainObjectBase<DerivedTC>& TC,
|
||
|
|
Eigen::PlainObjectBase<DerivedCN>& CN,
|
||
|
|
Eigen::PlainObjectBase<DerivedF>& F,
|
||
|
|
Eigen::PlainObjectBase<DerivedFTC>& FTC,
|
||
|
|
Eigen::PlainObjectBase<DerivedFN>& FN)
|
||
|
|
{
|
||
|
|
std::vector<std::vector<double> > vV,vTC,vN;
|
||
|
|
std::vector<std::vector<int> > vF,vFTC,vFN;
|
||
|
|
bool success = igl::readOBJ(str,vV,vTC,vN,vF,vFTC,vFN);
|
||
|
|
if(!success)
|
||
|
|
{
|
||
|
|
// readOBJ(str,vV,vTC,vN,vF,vFTC,vFN) should have already printed an error
|
||
|
|
// message to stderr
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool V_rect = igl::list_to_matrix(vV,V);
|
||
|
|
const char * format = "Failed to cast %s to matrix: min (%d) != max (%d)\n";
|
||
|
|
if(!V_rect)
|
||
|
|
{
|
||
|
|
printf(format,"V",igl::min_size(vV),igl::max_size(vV));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool F_rect = igl::list_to_matrix(vF,F);
|
||
|
|
if(!F_rect)
|
||
|
|
{
|
||
|
|
printf(format,"F",igl::min_size(vF),igl::max_size(vF));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if(!vN.empty())
|
||
|
|
{
|
||
|
|
bool VN_rect = igl::list_to_matrix(vN,CN);
|
||
|
|
if(!VN_rect)
|
||
|
|
{
|
||
|
|
printf(format,"CN",igl::min_size(vN),igl::max_size(vN));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!vFN.empty() && !vFN[0].empty())
|
||
|
|
{
|
||
|
|
bool FN_rect = igl::list_to_matrix(vFN,FN);
|
||
|
|
if(!FN_rect)
|
||
|
|
{
|
||
|
|
printf(format,"FN",igl::min_size(vFN),igl::max_size(vFN));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(!vTC.empty())
|
||
|
|
{
|
||
|
|
|
||
|
|
bool T_rect = igl::list_to_matrix(vTC,TC);
|
||
|
|
if(!T_rect)
|
||
|
|
{
|
||
|
|
printf(format,"TC",igl::min_size(vTC),igl::max_size(vTC));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(!vFTC.empty()&& !vFTC[0].empty())
|
||
|
|
{
|
||
|
|
|
||
|
|
bool FTC_rect = igl::list_to_matrix(vFTC,FTC);
|
||
|
|
if(!FTC_rect)
|
||
|
|
{
|
||
|
|
printf(format,"FTC",igl::min_size(vFTC),igl::max_size(vFTC));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename DerivedV, typename DerivedF>
|
||
|
|
IGL_INLINE bool igl::readOBJ(
|
||
|
|
const std::string str,
|
||
|
|
Eigen::PlainObjectBase<DerivedV>& V,
|
||
|
|
Eigen::PlainObjectBase<DerivedF>& F)
|
||
|
|
{
|
||
|
|
std::vector<std::vector<double> > vV,vTC,vN;
|
||
|
|
std::vector<std::vector<int> > vF,vFTC,vFN;
|
||
|
|
bool success = igl::readOBJ(str,vV,vTC,vN,vF,vFTC,vFN);
|
||
|
|
if(!success)
|
||
|
|
{
|
||
|
|
// readOBJ(str,vV,vTC,vN,vF,vFTC,vFN) should have already printed an error
|
||
|
|
// message to stderr
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool V_rect = igl::list_to_matrix(vV,V);
|
||
|
|
if(!V_rect)
|
||
|
|
{
|
||
|
|
// igl::list_to_matrix(vV,V) already printed error message to std err
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
bool F_rect = igl::list_to_matrix(vF,F);
|
||
|
|
if(!F_rect)
|
||
|
|
{
|
||
|
|
// igl::list_to_matrix(vF,F) already printed error message to std err
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef IGL_STATIC_LIBRARY
|
||
|
|
// Explicit template instantiation
|
||
|
|
// generated by autoexplicit.sh
|
||
|
|
template bool igl::readOBJ<Eigen::Matrix<double, -1, -1, 1, -1, -1>, Eigen::Matrix<double, -1, -1, 1, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, 3, 1, -1, 3>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 1, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 1, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, 3, 1, -1, 3> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
|
||
|
|
template bool igl::readOBJ<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 1, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 1, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
|
||
|
|
template bool igl::readOBJ<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
|
||
|
|
template bool igl::readOBJ<Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<double, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1>, Eigen::Matrix<int, -1, -1, 0, -1, -1> >(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<double, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&, Eigen::PlainObjectBase<Eigen::Matrix<int, -1, -1, 0, -1, -1> >&);
|
||
|
|
template bool igl::readOBJ<double, int>(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >&);
|
||
|
|
template bool igl::readOBJ<double, int>(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::vector<std::vector<double, std::allocator<double> >, std::allocator<std::vector<double, std::allocator<double> > > >&, std::vector<std::vector<int, std::allocator<int> >, std::allocator<std::vector<int, std::allocator<int> > > >&);
|
||
|
|
#endif
|