Updated dynamicscene example to use pre-prepared QNode

Change-Id: I03987b5189949e95452a5882bd5c58b26d885a2c
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 13 insertions, 11 deletions

diff --git a/examples/qt3d/dynamicscene-cpp/examplescene.cpp b/examples/qt3d/dynamicscene-cpp/examplescene.cpp
index ca15b1a9f..7bfb98f33 100644
--- a/examples/qt3d/dynamicscene-cpp/examplescene.cpp
+++ b/examples/qt3d/dynamicscene-cpp/examplescene.cpp
@@ -45,10 +45,8 @@ ExampleScene::ExampleScene(Qt3D::QNode *parent)
     , m_timer(new QTimer(this))
     , m_even(true)
 {
-    buildScene();
-
     QObject::connect(m_timer, SIGNAL(timeout()), SLOT(updateScene()));
-    m_timer->setInterval(500);
+    m_timer->setInterval(1200);
     m_timer->start();
 }
 
@@ -59,15 +57,19 @@ ExampleScene::~ExampleScene()
 
 void ExampleScene::updateScene()
 {
-    int i = 0;
-    Q_FOREACH (BoxEntity *entity, m_entities) {
-        if (i % 2 == 0)
-            entity->setParent(m_even ? Q_NULLPTR : this);
-        else
-            entity->setParent(m_even ? this : Q_NULLPTR);
-        ++i;
+    if (m_entities.isEmpty()) {
+        buildScene();
+    } else {
+        int i = 0;
+        Q_FOREACH (BoxEntity *entity, m_entities) {
+            if (i % 2 == 0)
+                entity->setParent(m_even ? Q_NULLPTR : this);
+            else
+                entity->setParent(m_even ? this : Q_NULLPTR);
+            ++i;
+        }
+        m_even = !m_even;
     }
-    m_even = !m_even;
 }
 
 void ExampleScene::buildScene()