Index: src/widgets/3dview/SceneEntity.qml
===================================================================
--- src/widgets/3dview/SceneEntity.qml
+++ src/widgets/3dview/SceneEntity.qml
@@ -34,9 +34,9 @@
     Camera {
         id: camera
         fieldOfView: 45
-        position: Qt.vector3d( 10.0, -10.0, 35.0 )
-        upVector: Qt.vector3d( 0.0, 0.85, 0.75 )
-        viewCenter: Qt.vector3d( 10.0, 10.0, 0.0 )
+        position: lineMesh.center.plus(Qt.vector3d(0.0, -20.0, 20.0))
+        upVector: Qt.vector3d(0.0, 1.0, 0.0)
+        viewCenter: lineMesh.center
     }
 
     FirstPersonCameraController { camera: camera }
@@ -63,6 +63,7 @@
         components: [
             PhongMaterial { ambient: "darkGreen" },
             LineMesh {
+                id: lineMesh
                 readonly property string currentFile: sceneRoot.currentFile
                 onCurrentFileChanged: readAndRun(currentFile)
             }
Index: src/widgets/3dview/linemesh.h
===================================================================
--- src/widgets/3dview/linemesh.h
+++ src/widgets/3dview/linemesh.h
@@ -26,25 +26,30 @@
 #include <QObject>
 #include <QNode>
 #include <QGeometryRenderer>
+#include <QVector3D>
 #include "gcodeto4d.h"
 
 class LineMeshGeometry;
 class QString;
 
 class LineMesh : public Qt3DRender::QGeometryRenderer
 {
     Q_OBJECT
+    Q_PROPERTY(QVector3D center READ center NOTIFY centerChanged)
 
 public:
     explicit LineMesh(Qt3DCore::QNode *parent = Q_NULLPTR);
     ~LineMesh();
     void read(const QString &path);
     Q_INVOKABLE void readAndRun(const QString &path);
     void posUpdate(const QVector<QVector4D> &pos);
 
+    QVector3D center();
+
 signals:
     void finished();
     void run(const QString &path);
+    void centerChanged(const QVector3D &center);
 
 private:
     GcodeTo4D _gcode;
Index: src/widgets/3dview/linemesh.cpp
===================================================================
--- src/widgets/3dview/linemesh.cpp
+++ src/widgets/3dview/linemesh.cpp
@@ -21,7 +21,6 @@
 */
 
 #include <QGeometryRenderer>
-#include <QVector3D>
 #include <QVector4D>
 #include "gcodeto4d.h"
 #include "linemesh.h"
@@ -68,4 +67,10 @@
     setVertexCount(_lineMeshGeo->vertexCount());
     setGeometry(_lineMeshGeo);
     emit finished();
+    emit centerChanged(center());
+}
+
+QVector3D LineMesh::center()
+{
+    return _lineMeshGeo ? _lineMeshGeo->center() : QVector3D();
 }
Index: src/widgets/3dview/linemeshgeometry.h
===================================================================
--- src/widgets/3dview/linemeshgeometry.h
+++ src/widgets/3dview/linemeshgeometry.h
@@ -25,17 +25,21 @@
 #include <QAttribute>
 #include <QGeometry>
 #include <Qt3DRender/QBuffer>
+#include <QVector3D>
 
 class LineMeshGeometry : public Qt3DRender::QGeometry
 {
     Q_OBJECT
-
+    Q_PROPERTY(QVector3D center READ center CONSTANT)
 public:
     LineMeshGeometry(const QVector<QVector3D> &vertices, Qt3DCore::QNode *parent = Q_NULLPTR);
     ~LineMeshGeometry();
     int vertexCount();
 
+    QVector3D center();
+
 private:
     Qt3DRender::QAttribute *_positionAttribute;
     Qt3DRender::QBuffer *_vertexBuffer;
+    QVector3D _center;
 };
Index: src/widgets/3dview/linemeshgeometry.cpp
===================================================================
--- src/widgets/3dview/linemeshgeometry.cpp
+++ src/widgets/3dview/linemeshgeometry.cpp
@@ -21,7 +21,6 @@
 */
 
 #include <QVector>
-#include <QVector3D>
 #include "linemeshgeometry.h"
 
 LineMeshGeometry::LineMeshGeometry(const QVector<QVector3D> &vertices, Qt3DCore::QNode *parent) :
@@ -41,6 +40,40 @@
     _positionAttribute->setName(Qt3DRender::QAttribute::defaultPositionAttributeName());
 
     addAttribute(_positionAttribute);
+
+    if (vertices.isEmpty()) {
+        return;
+    }
+
+    float minX = vertices.first().x();
+    float maxX = vertices.first().x();
+    float minY = vertices.first().y();
+    float maxY = vertices.first().y();
+    float minZ = vertices.first().z();
+    float maxZ = vertices.first().z();
+    for (const auto &position : vertices) {
+        if (position.x() < minX) {
+            minX = position.x();
+        }
+        if (position.x() > maxX) {
+            maxX = position.x();
+        }
+        if (position.y() < minY) {
+            minY = position.y();
+        }
+        if (position.y() > maxY) {
+            maxY = position.y();
+        }
+        if (position.z() < minZ) {
+            minZ = position.z();
+        }
+        if (position.z() > maxZ) {
+            maxZ = position.z();
+        }
+    }
+    _center = QVector3D((minX + maxX) / 2.0f,
+                        (minY + maxY) / 2.0f,
+                        (minZ + maxZ) / 2.0f);
 }
 
 LineMeshGeometry::~LineMeshGeometry()
@@ -51,3 +84,8 @@
 {
     return _vertexBuffer->data().size() / static_cast<int>(sizeof(QVector3D));
 }
+
+QVector3D LineMeshGeometry::center()
+{
+    return _center;
+}