diff --git a/CopyVisitor.cpp b/CopyVisitor.cpp
new file mode 100644
index 0000000..58b77e9
--- /dev/null
+++ b/CopyVisitor.cpp
@@ -0,0 +1,85 @@
+#include "GlmToolkit.h"
+#include "Scene.h"
+#include "Source.h"
+
+#include "CopyVisitor.h"
+
+Node *CopyVisitor::deepCopy(Node *node)
+{
+    CopyVisitor cv;
+    node->accept(cv);
+
+    return cv.current_;
+}
+
+CopyVisitor::CopyVisitor() : current_(nullptr)
+{
+
+}
+
+void CopyVisitor::visit(Node &n)
+{
+}
+
+void CopyVisitor::visit(Group &n)
+{
+    Group *here = new Group;
+
+    // node
+    current_ = here;
+    current_->copyTransform(&n);
+    current_->visible_ = n.visible_;
+
+    // loop
+    for (NodeSet::iterator node = n.begin(); node != n.end(); ++node) {
+        (*node)->accept(*this);
+
+        here->attach( current_ );
+
+        current_ = here;
+    }
+
+}
+
+void CopyVisitor::visit(Switch &n)
+{
+    Switch *here = new Switch;
+
+    // node
+    current_ = here;
+    current_->copyTransform(&n);
+    current_->visible_ = n.visible_;
+
+    // switch properties
+    here->setActive( n.active() );
+
+    // loop
+    for (uint i = 0; i < n.numChildren(); ++i) {
+        n.child(i)->accept(*this);
+
+        here->attach( current_ );
+
+        current_ = here;
+    }
+
+}
+
+void CopyVisitor::visit(Scene &n)
+{
+    Scene *here = new Scene;
+
+    current_ = here->root();
+    n.root()->accept(*this);
+}
+
+
+void CopyVisitor::visit(Primitive &n)
+{
+    Primitive *here = new Primitive;
+
+    // node
+    current_ = here;
+    current_->copyTransform(&n);
+    current_->visible_ = n.visible_;
+
+}
diff --git a/CopyVisitor.h b/CopyVisitor.h
new file mode 100644
index 0000000..8f7ac37
--- /dev/null
+++ b/CopyVisitor.h
@@ -0,0 +1,24 @@
+#ifndef COPYVISITOR_H
+#define COPYVISITOR_H
+
+#include "Visitor.h"
+
+class SourceCore;
+
+class CopyVisitor : public Visitor
+{
+    Node *current_;
+    CopyVisitor();
+
+public:
+
+    static Node *deepCopy(Node *node);
+
+    void visit(Scene& n) override;
+    void visit(Node& n) override;
+    void visit(Primitive& n) override;
+    void visit(Group& n) override;
+    void visit(Switch& n) override;
+};
+
+#endif // COPYVISITOR_H
diff --git a/Interpolator.cpp b/Interpolator.cpp
new file mode 100644
index 0000000..ac7d148
--- /dev/null
+++ b/Interpolator.cpp
@@ -0,0 +1,6 @@
+#include "Interpolator.h"
+
+Interpolator::Interpolator()
+{
+
+}
diff --git a/Interpolator.h b/Interpolator.h
new file mode 100644
index 0000000..4bfa688
--- /dev/null
+++ b/Interpolator.h
@@ -0,0 +1,22 @@
+#ifndef INTERPOLATOR_H
+#define INTERPOLATOR_H
+
+#include "Source.h"
+
+class Interpolator
+{
+public:
+    Interpolator();
+
+    Source *target_;
+
+    SourceCore from_;
+    SourceCore to_;
+    SourceCore current_;
+
+    float cursor_;
+
+
+};
+
+#endif // INTERPOLATOR_H