initial

1 files changed, 53 insertions, 0 deletions

diff --git a/wave-sim/src/graphics/meshloader.cpp b/wave-sim/src/graphics/meshloader.cpp
new file mode 100644
index 0000000..84e78c7
--- /dev/null
+++ b/wave-sim/src/graphics/meshloader.cpp
@@ -0,0 +1,53 @@
+#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()
+{
+
+}