First opengl/x11/window integration.

src/visual_elements/Scene.cpp

@@ -0,0 +1,54 @@
+#include "Scene.h"
+
+#include "VisualLayer.h"
+#include "GeometryNode.h"
+#include "RectangleNode.h"
+
+#include "MeshBuilder.h"
+#include "TriMesh.h"
+
+void Scene::syncLayers(const std::vector<VisualLayer*>& layers)
+{
+    mLayers = layers;
+}
+
+void Scene::update(Image<unsigned char>* image)
+{
+    if (image)
+    {
+        //
+    }
+    else
+    {
+        mWorkingMeshs.clear();
+        for(auto layer : mLayers)
+        {
+            if (layer->hasShapeNode())
+            {
+                auto node = layer->getShapeNode();
+                if (layer->getIsDirty())
+                {
+                    node->updateMesh();
+                    layer->setIsDirty(false);
+                }
+
+                mWorkingMeshs.push_back(dynamic_cast<TriMesh*>(node->getMesh()));
+            }
+        }
+    }
+}
+
+void Scene::processRectangleNode(RectangleNode* node)
+{
+
+}
+
+unsigned Scene::getNumMeshes() const
+{
+    return mWorkingMeshs.size();
+}
+
+TriMesh* Scene::getMesh(std::size_t idx) const
+{
+    return mWorkingMeshs[idx];
+}