QGeometryRenderer: handle backend notifications to set QGeometry

Change-Id: I120e9909d1f657d20e944ef96ca019cfc84b3777
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/src/render/frontend/qgeometryrenderer.cpp b/src/render/frontend/qgeometryrenderer.cpp
index 16ff01fe2..a74fcc579 100644
--- a/src/render/frontend/qgeometryrenderer.cpp
+++ b/src/render/frontend/qgeometryrenderer.cpp
@@ -254,6 +254,21 @@ void QGeometryRenderer::copy(const QNode *ref)
     d_func()->m_functor = other->d_func()->m_functor;
 }
 
+void QGeometryRenderer::sceneChangeEvent(const QSceneChangePtr &e)
+{
+    Q_D(QGeometryRenderer);
+    QScenePropertyChangePtr change = qSharedPointerCast<QScenePropertyChange>(e);
+    if (change->type() == NodeUpdated && change->propertyName() == QByteArrayLiteral("geometry")) {
+        QGeometry *backendGeometry = change->value().value<QGeometry *>();
+        QGeometry *frontendGeometry = static_cast<QGeometry *>(QNode::clone(backendGeometry));
+        if (frontendGeometry != Q_NULLPTR)
+            d->insertTree(frontendGeometry);
+        setGeometry(frontendGeometry);
+    }
+}
+
+
+
 } // Qt3D
 
 QT_END_NAMESPACE
diff --git a/src/render/frontend/qgeometryrenderer.h b/src/render/frontend/qgeometryrenderer.h
index 3810c69e2..78a74d798 100644
--- a/src/render/frontend/qgeometryrenderer.h
+++ b/src/render/frontend/qgeometryrenderer.h
@@ -118,6 +118,7 @@ Q_SIGNALS:
 protected:
     QGeometryRenderer(QGeometryRendererPrivate &dd, QNode *parent = 0);
     void copy(const QNode *ref) Q_DECL_OVERRIDE;
+    void sceneChangeEvent(const QSceneChangePtr &change) Q_DECL_OVERRIDE;
 
 private:
     Q_DECLARE_PRIVATE(QGeometryRenderer)