add exe icon,

signal-slot for openFile,
resetView on openFile,
cleanup when open a new file,
triangulate quad poly now correctly, more not working, bug from previous version,
next:
fix 5,6,.. triangulation,
triClothMan, IC Helmet, still buggy,

QtMeshViewer/Header/GeometryEngine.h

 #pragma once
 #include "..\Header\FileInterface.h"
+#include <QObject>
 #include <QOpenGLFunctions>
 #include <QOpenGLShaderProgram>
 #include <QOpenGLBuffer>
@@ -13,8 +14,10 @@ struct DrawInformation {
 	QMatrix4x4 modelMatrix;
 };
 
-class GeometryEngine : protected QOpenGLFunctions
+class GeometryEngine : public QObject, protected QOpenGLFunctions
 {
+	Q_OBJECT
+
 public:
 	GeometryEngine();
 	virtual ~GeometryEngine();
@@ -26,9 +29,14 @@ private:
 	QVector<DrawInformation> m_drawList;
 
 	void loadTexture(const char* filePath);
+	void clearData();
 
-public:
+public slots:
 	void loadFile(const char* filePath);
 	void drawGeometry(QOpenGLShaderProgram *program);
+
+signals:
+	void requestResetView();
+
 };
 

QtMeshViewer/Header/MainWindow.h

@@ -19,4 +19,6 @@ private slots:
 	void aboutFile();
 	void aboutTool();
 
+signals:
+	void loadFile(const char*);
 };

QtMeshViewer/Header/OglViewerWidget.h

@@ -50,9 +50,7 @@ protected:
 private:
 	void initShaders();
 
-public:
-	void openFile(const char* filePath);
-
-
+private slots:
+	void resetView();
 };
 

QtMeshViewer/Resources/prgmExeIcon.rc

+IDI_ICON1               ICON    DISCARDABLE     "icon.ico"
\ No newline at end of file

QtMeshViewer/Source/GeometryEngine.cpp

@@ -10,23 +10,12 @@ GeometryEngine::GeometryEngine()
 {
 	initializeOpenGLFunctions();
 
-	// Generate 2 VBOs
-	m_arrayBuf.create();
-	m_indexBuf.create();
-
-	// Initializes cube geometry and transfers it to VBOs
-	loadFile("..\\Release\\Msh\\ic_helmet.msh");
+	loadFile("..\\Release\\Msh\\4-Poly.msh");
 }
 
 GeometryEngine::~GeometryEngine()
 {
-	m_arrayBuf.destroy();
-	m_indexBuf.destroy();
-
-	for (auto it : m_textures)
-		delete it;
-	m_textures.clear();
-	m_drawList.clear();
+	clearData();
 }
 
 
@@ -35,6 +24,14 @@ GeometryEngine::~GeometryEngine()
 
 void GeometryEngine::loadFile(const char* filePath)
 {
+	// cleanup old stuff and recreate buffers
+	clearData();
+	m_arrayBuf.create();
+	m_indexBuf.create();
+
+	//reset view
+	emit requestResetView();
+
 	try
 	{
 		//TODO normalize
@@ -134,12 +131,28 @@ void GeometryEngine::loadTexture(const char* filePath)
 	m_textures.push_back(new_texture);
 }
 
+void GeometryEngine::clearData()
+{
+	if (m_arrayBuf.isCreated())
+		m_arrayBuf.destroy();
+	if (m_indexBuf.isCreated())
+		m_indexBuf.destroy();
+
+	for (auto it : m_textures)
+		delete it;
+	m_textures.clear();
+	m_drawList.clear();
+}
+
 
 /////////////////////////////////////////////////////////////////////////
 // public functions
 
 void GeometryEngine::drawGeometry(QOpenGLShaderProgram *program)
 {
+	if (!m_arrayBuf.isCreated() || !m_indexBuf.isCreated())
+		return;
+
 // Setup
 	// Tell OpenGL which VBOs to use
 	m_arrayBuf.bind();

QtMeshViewer/Source/MainWindow.cpp

@@ -26,7 +26,6 @@ MainWindow::MainWindow(QWidget *parent)
 	QSurfaceFormat::setDefaultFormat(format);
 
 	setCentralWidget(new OglViewerWidget(this));
-
 }
 
 MainWindow::~MainWindow()
@@ -37,7 +36,7 @@ MainWindow::~MainWindow()
 void MainWindow::openFile()
 {
 	QString fileName = QFileDialog::getOpenFileName(this, "Open File", "../Release/Msh", "Mesh (*.msh)");
-	dynamic_cast<OglViewerWidget*>(centralWidget())->openFile(fileName.toStdString().c_str());
+	emit loadFile(fileName.toStdString().c_str());
 }
 
 void MainWindow::aboutFile()

QtMeshViewer/Source/MshFile.cpp

@@ -476,7 +476,7 @@ void MshFile::analyseSegmChunks(Model * dataDestination, std::list<ChunkHeader*>
 				for (unsigned int tri = 0; tri < tmp_multiPolySize - 2; tri++)
 					// ..calculate the edge indices
 					for (int triEdge = 0; triEdge < 3; triEdge++)
-						new_segment->indices.push_back((GLuint)(tri + triEdge - ((tri % 2) * (triEdge - 1) * 2)));
+						new_segment->indices.push_back((GLuint)tmp_buffer[(tri + triEdge - ((tri % 2) * (triEdge - 1) * 2))]);
 			}
 			else
 			{

QtMeshViewer/Source/OglViewerWidget.cpp

 #include "..\Header\OglViewerWidget.h"
-
+#include "..\Header\MainWindow.h"
 #include <QMouseEvent>
 #include <QDropEvent>
 #include <QMimeData>
@@ -19,6 +19,7 @@ OglViewerWidget::OglViewerWidget(QWidget *parent) :
 	setFocus();
 	m_translation.setZ(DEFAULT_Z_DISTANCE);
 	setAcceptDrops(true);
+
 }
 
 OglViewerWidget::~OglViewerWidget()
@@ -101,14 +102,12 @@ void OglViewerWidget::keyPressEvent(QKeyEvent *e)
 {
 	if (e->key() == Qt::Key_Space)
 	{
-		m_rotation = QQuaternion();
-		m_translation = { 0.0, 0.0, DEFAULT_Z_DISTANCE };
+		resetView();
 	}
 	else if (e->key() == Qt::Key_Escape)
 	{
 		parentWidget()->close();
 	}
-	update();
 }
 
 void OglViewerWidget::initializeGL()
@@ -126,6 +125,8 @@ void OglViewerWidget::initializeGL()
 	glEnable(GL_CULL_FACE);
 
 	m_dataEngine = new GeometryEngine;
+	connect(m_dataEngine, &GeometryEngine::requestResetView, this, &OglViewerWidget::resetView);
+	connect(parentWidget(), SIGNAL(loadFile(const char*)), m_dataEngine, SLOT(loadFile(const char*)));
 
 }
 
@@ -186,9 +187,11 @@ void OglViewerWidget::initShaders()
 
 
 /////////////////////////////////////////////////////////////////////////
-// public functions
+// private slots
 
-void OglViewerWidget::openFile(const char * filePath)
+void OglViewerWidget::resetView()
 {
-	m_dataEngine->loadFile(filePath);
-}
\ No newline at end of file
+	m_rotation = QQuaternion();
+	m_translation = { 0.0, 0.0, DEFAULT_Z_DISTANCE };
+	update();
+}