1 files changed, 26 insertions, 3 deletions
diff --git a/src/datavisualization/engine/q3dobject.cpp b/src/datavisualization/engine/q3dobject.cpp
index cd609ae6..ac110d82 100644
--- a/src/datavisualization/engine/q3dobject.cpp
+++ b/src/datavisualization/engine/q3dobject.cpp
@@ -36,11 +36,15 @@ void Q3DObject::copyValuesFrom(const Q3DObject &source)
     d_ptr->m_position.setX(source.d_ptr->m_position.x());
     d_ptr->m_position.setY(source.d_ptr->m_position.y());
     d_ptr->m_position.setZ(source.d_ptr->m_position.z());
+    setDirty(true);
 }
 
 void Q3DObject::setParentScene(Q3DScene *parentScene)
 {
-    d_ptr->m_parentScene = parentScene;
+    if (d_ptr->m_parentScene != parentScene) {
+        d_ptr->m_parentScene = parentScene;
+        setDirty(true);
+    }
 }
 
 Q3DScene *Q3DObject::parentScene()
@@ -50,7 +54,10 @@ Q3DScene *Q3DObject::parentScene()
 
 void Q3DObject::setPosition(const QVector3D &position)
 {
-    d_ptr->m_position = position;
+    if (d_ptr->m_position != position) {
+        d_ptr->m_position = position;
+        setDirty(true);
+    }
 }
 
 QVector3D Q3DObject::position() const
@@ -58,10 +65,26 @@ QVector3D Q3DObject::position() const
     return d_ptr->m_position;
 }
 
+/*!
+ * \internal
+ */
+void Q3DObject::setDirty(bool dirty)
+{
+    d_ptr->m_isDirty = dirty;
+}
+
+/*!
+ * \internal
+ */
+bool Q3DObject::isDirty() const
+{
+    return d_ptr->m_isDirty;
+}
 
 Q3DObjectPrivate::Q3DObjectPrivate(Q3DObject *q) :
     q_ptr(q),
-    m_parentScene(0)
+    m_parentScene(0),
+    m_isDirty(true)
 {
 }