diff --git a/qglview/globject.cpp b/qglview/globject.cpp
index 7935b65..6fadef3 100644
--- a/qglview/globject.cpp
+++ b/qglview/globject.cpp
@@ -137,25 +137,7 @@ void GLObjectBase::addChildren(QList<GLObjectBase * > & list, GLObjectBase * whe
 
 
 void GLObjectBase::calculateBoundingBox() {
-	if (points.isEmpty()) return;
-	GLfloat mix, miy, miz, max, may, maz;
-	mix = max = points[0].x;
-	miy = may = points[0].y;
-	miz = maz = points[0].z;
-	foreach (const Vector3d & i, points) {
-		if (mix > i.x) mix = i.x;
-		if (max < i.x) max = i.x;
-		if (miy > i.y) miy = i.y;
-		if (may < i.y) may = i.y;
-		if (miz > i.z) miz = i.z;
-		if (maz < i.z) maz = i.z;
-	}
-	bound.x = (mix + max) / 2.;
-	bound.y = (miy + may) / 2.;
-	bound.z = (miz + maz) / 2.;
-	bound.length = max - mix;
-	bound.width  = may - miy;
-	bound.height = maz - miz;
+	bound = vbo.boundingBox();
 }
 
 
diff --git a/qglview/glvbo.cpp b/qglview/glvbo.cpp
index 87edfeb..fa9917c 100644
--- a/qglview/glvbo.cpp
+++ b/qglview/glvbo.cpp
@@ -281,3 +281,33 @@ bool GLVBO::loadFromFile(const QString & filename) {
 	}
 	return false;
 }
+
+
+Box3D GLVBO::boundingBox() const {
+	if (vertices_.size() < 3) return Box3D();
+	int vcnt = vertices_.size() / 3;
+	//qDebug() << "calculateBinormals" << vcnt << tcnt << vertices_.size() << texcoords_.size() << "...";
+	GLfloat mix, miy, miz, max, may, maz;
+	Vector3d v0(vertices_[0], vertices_[1], vertices_[2]);
+	mix = max = v0.x;
+	miy = may = v0.y;
+	miz = maz = v0.z;
+	Box3D bound;
+	for (int t = 1; t < vcnt; ++t) {
+		int vi = t*3;
+		Vector3d v(vertices_[vi + 0], vertices_[vi + 1], vertices_[vi + 2]);
+		if (mix > v.x) mix = v.x;
+		if (max < v.x) max = v.x;
+		if (miy > v.y) miy = v.y;
+		if (may < v.y) may = v.y;
+		if (miz > v.z) miz = v.z;
+		if (maz < v.z) maz = v.z;
+	}
+	bound.x = (mix + max) / 2.;
+	bound.y = (miy + may) / 2.;
+	bound.z = (miz + maz) / 2.;
+	bound.length = max - mix;
+	bound.width  = may - miy;
+	bound.height = maz - miz;
+	return bound;
+}
diff --git a/qglview/glvbo.h b/qglview/glvbo.h
index d6347e0..9e27727 100644
--- a/qglview/glvbo.h
+++ b/qglview/glvbo.h
@@ -55,6 +55,8 @@ public:
 	bool saveToFile(const QString & filename);
 	bool loadFromFile(const QString & filename);
 
+	Box3D boundingBox() const;
+
 private:
 	void calculateBinormals();
 
diff --git a/qglview/mainwindow.cpp b/qglview/mainwindow.cpp
index d6f76c9..9b57166 100644
--- a/qglview/mainwindow.cpp
+++ b/qglview/mainwindow.cpp
@@ -201,6 +201,7 @@ void MainWindow::selectionChanged(GLObjectBase * cur, GLObjectBase * prev) {
 	objectEditor->setObject(sel_obj);
 	if (sel_obj == 0) return;
 	matEditor->setMaterial(sel_obj->material());
+	qDebug() << sel_obj->boundingBox();
 }