/usr/lib/Wt/examples/webgl/readObj.C is in witty-examples 3.3.0-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 | #include "readObj.h"
#include <fstream>
#include <iostream>
#include <boost/tokenizer.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/lexical_cast.hpp>
#include <stdlib.h>
#if 0
#include <boost/bind.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>
#include <boost/spirit/include/phoenix_stl.hpp>
namespace qi = boost::spirit::qi;
namespace ascii = boost::spirit::ascii;
namespace phoenix = boost::phoenix;
void readObj(const std::string &fname,
std::vector<double> &data)
{
using qi::double_;
using qi::int_;
using qi::lit;
using qi::char_;
using qi::phrase_parse;
using qi::_1;
using ascii::space;
using phoenix::push_back;
using phoenix::ref;
std::vector<double> points;
std::vector<double> normals;
std::vector<double> tex;
std::vector<int> faces;
std::ifstream f(fname.c_str());
while (f) {
std::string line;
getline(f, line);
bool r = phrase_parse(
line.begin(),
line.end(),
(char_('v') >> double_[push_back(ref(points), _1)] >> double_[push_back(ref(points), _1)] >> double_[push_back(ref(points), _1)] |
lit("vn") >> double_[push_back(ref(normals), _1)] >> double_[push_back(ref(normals), _1)] >> double_[push_back(ref(normals), _1)] |
lit("vt") >> double_[push_back(ref(tex), _1)] >> double_[push_back(ref(tex), _1)] |
char_('f') >> *(int_[push_back(ref(faces), _1)] >> char_('/') >> -(int_) >> char_('/') >> int_[push_back(ref(faces), _1)])),
space
);
}
for (unsigned i = 0; i < faces.size(); ++i) {
data.push_back(points[(faces[i]-1)*3]);
data.push_back(points[(faces[i]-1)*3 + 1]);
data.push_back(points[(faces[i]-1)*3 + 2]);
++i;
data.push_back(normals[(faces[i]-1)*3]);
data.push_back(normals[(faces[i]-1)*3 + 1]);
data.push_back(normals[(faces[i]-1)*3 + 2]);
}
}
#else
float str2float(const std::string &s)
{
return atof(s.c_str());
}
void readObj(const std::string &fname,
std::vector<float> &data)
{
std::vector<float> points;
std::vector<float> normals;
std::vector<float> textures;
std::ifstream f(fname.c_str());
while (f) {
std::string line;
getline(f, line);
if (f) {
std::vector<std::string> splitLine;
boost::split(splitLine, line, boost::is_any_of(" "), boost::algorithm::token_compress_on);
if (splitLine[0] == "v") {
points.push_back(str2float(splitLine[1]));
points.push_back(str2float(splitLine[2]));
points.push_back(str2float(splitLine[3]));
} else if (splitLine[0] == "vn") {
normals.push_back(str2float(splitLine[1]));
normals.push_back(str2float(splitLine[2]));
normals.push_back(str2float(splitLine[3]));
} else if (splitLine[0] == "vt") {
// texture coordinates are not used at all
textures.push_back(boost::lexical_cast<float>(splitLine[1]));
textures.push_back(boost::lexical_cast<float>(splitLine[2]));
if (splitLine.size()>3) textures.push_back(boost::lexical_cast<float>(splitLine[3]));
} else if (splitLine[0] == "f") {
//std::vector<boost::tuple<int, int, int> > face;
//std::vector<int> face;
for (unsigned i = 1; i < splitLine.size(); ++i) {
std::vector<std::string> faceLine;
boost::split(faceLine, splitLine[i], boost::is_any_of("/"), boost::algorithm::token_compress_off);
int v, t, n;
v = boost::lexical_cast<int>(faceLine[0]);
if (faceLine[1] != "") {
t = boost::lexical_cast<int>(faceLine[1]);
} else {
t = -1;
}
if (faceLine[2] != "") {
n = boost::lexical_cast<int>(faceLine[2]);
} else {
n = -1;
}
//face.push_back(boost::make_tuple<int, int, int>(v, t, n));
//faces.push_back(v - 1);
data.push_back(points[(v-1)*3]);
data.push_back(points[(v-1)*3 + 1]);
data.push_back(points[(v-1)*3 + 2]);
data.push_back(normals[(n-1)*3]);
data.push_back(normals[(n-1)*3 + 1]);
data.push_back(normals[(n-1)*3 +2]);
}
//faces.push_back(face);
} else if (splitLine[0] == "#") {
// ignore comments
}else {
std::cerr << "ERROR in obj file: unknown line: " << line << "\n";
// go on with fingers crossed
//return;
}
}
}
}
#endif
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