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#include "graphics/meshloader.h"
#define TINYOBJLOADER_IMPLEMENTATION
#include "util/tiny_obj_loader.h"
#include <iostream>
#include <QString>
#include <QFile>
#include <QTextStream>
#include <QRegularExpression>
using namespace Eigen;
bool MeshLoader::loadTetMesh(const std::string &filepath, std::vector<Eigen::Vector3d> &vertices, std::vector<Eigen::Vector4i> &tets)
{
QString qpath = QString::fromStdString(filepath);
QFile file(qpath);
if(!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
std::cout << "Error opening file: " << filepath << std::endl;
return false;
}
QTextStream in(&file);
QRegularExpression vrxp("v (-?\\d*\\.?\\d+) +(-?\\d*\\.?\\d+) +(-?\\d*\\.?\\d+)");
QRegularExpression trxp("t (\\d+) +(\\d+) +(\\d+) +(\\d+)");
while(!in.atEnd()) {
QString line = in.readLine();
auto match = vrxp.match(line);
if(match.hasMatch()) {
vertices.emplace_back(match.captured(1).toDouble(),
match.captured(2).toDouble(),
match.captured(3).toDouble());
continue;
}
match = trxp.match(line);
if(match.hasMatch()) {
tets.emplace_back(match.captured(1).toInt(),
match.captured(2).toInt(),
match.captured(3).toInt(),
match.captured(4).toInt());
}
}
file.close();
return true;
}
MeshLoader::MeshLoader()
{
}
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