Initial commit

1 files changed, 65 insertions, 0 deletions

diff --git a/src/graphics/meshloader.cpp b/src/graphics/meshloader.cpp
new file mode 100644
index 0000000..fc95f6f
--- /dev/null
+++ b/src/graphics/meshloader.cpp
@@ -0,0 +1,65 @@
+#include "graphics/meshloader.h"
+
+#define TINYOBJLOADER_IMPLEMENTATION
+#include "util/tiny_obj_loader.h"
+
+#include <iostream>
+
+#include <QString>
+#include <QFile>
+#include <QTextStream>
+#include <QRegularExpression>
+#include <QFileInfo>
+#include <iostream>
+#include <set>
+
+using namespace std;
+using namespace Eigen;
+
+MeshLoader::MeshLoader() {}
+
+bool MeshLoader::loadTriMesh(const string &filePath, vector<Vector3f> &vertices, vector<Vector3i> &faces)
+{
+    tinyobj::attrib_t attrib;
+    vector<tinyobj::shape_t> shapes;
+    vector<tinyobj::material_t> materials;
+
+    QFileInfo info(QString(filePath.c_str()));
+    string err;
+    bool ret = tinyobj::LoadObj(&attrib, &shapes, &materials, &err,
+                                info.absoluteFilePath().toStdString().c_str(), (info.absolutePath().toStdString() + "/").c_str(), true);
+    if (!err.empty()) {
+        cerr << err << endl;
+    }
+
+    if (!ret) {
+        cerr << "Failed to load/parse .obj file" << endl;
+        return false;
+    }
+
+    for (size_t s = 0; s < shapes.size(); s++) {
+        size_t index_offset = 0;
+        for (size_t f = 0; f < shapes[s].mesh.num_face_vertices.size(); f++) {
+            unsigned int fv = shapes[s].mesh.num_face_vertices[f];
+
+            Vector3i face;
+            for (size_t v = 0; v < fv; v++) {
+                tinyobj::index_t idx = shapes[s].mesh.indices[index_offset + v];
+
+                face[v] = idx.vertex_index;
+
+            }
+            faces.push_back(face);
+
+            index_offset += fv;
+        }
+    }
+
+    for (size_t i = 0; i < attrib.vertices.size(); i += 3) {
+        vertices.emplace_back(attrib.vertices[i], attrib.vertices[i + 1], attrib.vertices[i + 2]);
+    }
+
+    cout << "Loaded " << faces.size() << " faces and " << vertices.size() << " vertices" << endl;
+
+    return true;
+}