[SOLVED] nodeReference downcast

[dongju.jeong]

   {

   NodeReferencePtr node_ref = NodeReference::create(NodeRef);              // NodeRef is file parameter (.node)
    node_ref->setName("NodeReference_0");
    
    node_ref->release();
    Editor::get()->addNode(node_ref->getNode());

   NodePtr  node = Editor::get()->getNodeByName("NodeReference_0");
    ObjectMeshStaticPtr node1 = ObjectMeshStatic::cast(node);                           //return null
    ObjectMeshStaticPtr node2 = ObjectMeshStatic::cast(node);                           //return null

}

NodeRef is material_ball.node(material_ball's nodeReference).

 

material_ball's Original type is  ObjectMeshStatic. So I thought that I can cast to ObjectMeshStatic. but That casting return null.

How do I cast to ObjectMeshStatic?

[fox]

Hi dongju.jeong,

You cannot downcast the node to ObjectMeshStatic this way, as it's original type is NodeReference, not ObjectMeshStatic. Guess in your case you should use the NodeReference::getReference() method (follow the link to see the related code-snippet in the doc).

Hope this helps!

Thank you!

[dongju.jeong]

Ok,  that link have something wrong ( 404 forbidden).

 

but I understand getReference() function. and  I get a workaround. 

              ObjectMeshStaticPtr node1 = ObjectMeshStatic::cast(NodeReference::cast(node)->getReference());

Thank you

 

If I editing node1 for something related to the ObjectMeshStatic class, would it apply to the node (NodeReference)?

Edited October 22, 2018 by dongju.jeong

[fox]

Right, that's the way it should work! Sorry, the link is fixed now.

As for your second question, please see the Editing a Node Reference chapter in the NodeReference Class article.

Thank you!