started memory cache server

nodes/nodegraph.cpp

@@ -3,11 +3,20 @@
 #include <QChildEvent>
 #include <QDebug>
 
-NodeGraph::NodeGraph()
+NodeGraph::NodeGraph() :
+  output_node_(nullptr),
+  ctx_(nullptr)
 {
 
 }
 
+void NodeGraph::Process()
+{
+  if (output_node_ != nullptr) {
+    output_node_->Process(Time());
+  }
+}
+
 void NodeGraph::childEvent(QChildEvent *event)
 {
   if (event->type() == QEvent::ChildAdded || event->type() == QEvent::ChildRemoved) {
@@ -25,13 +34,45 @@ Node *NodeGraph::OutputNode()
   return output_node_;
 }
 
-double NodeGraph::Time()
+const rational& NodeGraph::Time()
 {
   return time_;
 }
 
-void NodeGraph::SetTime(double d)
+void NodeGraph::SetTime(const rational &d)
 {
   time_ = d;
   emit TimeChanged();
 }
+
+MemoryCache *NodeGraph::memory_cache()
+{
+  return &memory_cache_;
+}
+
+const int &NodeGraph::width()
+{
+  return width_;
+}
+
+const int &NodeGraph::height()
+{
+  return height_;
+}
+
+void NodeGraph::set_width(const int& w)
+{
+  width_ = w;
+  emit ParametersChanged();
+}
+
+void NodeGraph::set_height(const int& h)
+{
+  height_ = h;
+  emit ParametersChanged();
+}
+
+void NodeGraph::SetGLContext(QOpenGLContext *ctx)
+{
+  memory_cache_.SetParameters(ctx, width_, height_);
+}