Grab nodes in view

View.h

@@ -17,6 +17,7 @@ public:
     virtual void draw () = 0;
     virtual void zoom (float) {}
     virtual void drag (glm::vec2, glm::vec2) {}
+    virtual void grab (glm::vec2, glm::vec2, Node*) {}
 
     Scene scene;
 
@@ -34,6 +35,7 @@ public:
     void draw () override;
     void zoom (float factor);
     void drag (glm::vec2 from, glm::vec2 to);
+    void grab (glm::vec2 from, glm::vec2 to, Node *node);
 
 };