Clean up of scene nodes to support 2d and non int positioning.

src/visual_elements/scene/Scene.cpp

@@ -0,0 +1,73 @@
+#include "Scene.h"
+
+#include "RootNode.h"
+#include "FontsManager.h"
+#include "SceneItem.h"
+
+#include <iostream>
+
+Scene::Scene()
+    :   mRootNode(std::make_unique<RootNode>()),
+        mSceneInfo(std::make_unique<SceneInfo>())
+{
+    mRootNode->setName("Scene_RootNode");
+}
+
+Scene::~Scene()
+{
+
+}
+
+void Scene::update(FontsManager* fontsManager)
+{
+    mSceneInfo->mFontsManager = fontsManager;
+
+    mSceneItems.clear();
+    updateNode(mRootNode.get());
+}
+
+void Scene::addNode(AbstractVisualNode* node)
+{
+    mRootNode->addChild(node);
+}
+
+bool Scene::isEmpty() const
+{
+    return mRootNode->getNumChildren() == 0;
+}
+
+void Scene::updateNode(AbstractVisualNode* node)
+{
+    for (auto child : node->getChildren())
+    {
+        if (child->getIsVisible())
+        {
+            updateNode(child);
+        }
+    }
+
+    node->update(mSceneInfo.get());
+
+    for (std::size_t idx=0; idx< node->getNumSceneItems(); idx++)
+    {
+        if (auto item = node->getSceneItem(idx))
+        {
+            mSceneItems.push_back(item);
+        }
+    }
+}
+
+const std::vector<SceneItem*>& Scene::getItems() const
+{
+    return mSceneItems;
+}
+
+bool Scene::shouldShowMeshOutline() const
+{
+    return mSceneInfo->mShowMeshOutline;
+}
+
+void Scene::setShowMeshOutline(bool shouldShow)
+{
+    mSceneInfo->mShowMeshOutline = shouldShow;
+}