clearNode()

[dongju.jeong]

int clearNode( const char * name )

Clears a cache of a given node.

Arguments

• const char * name - Path to the *.node file.

Return value

1 if the cache is cleared successfully; otherwise, 0.

 

Example)

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

…       //node1 editing........

 

World::get()->clearNode(node);      //  <------- it's mean that The Nordreference returns to the state of before editing??

[fox]

Hi Dongju,

Caching of nodes is used to speed up loading process, if a node was added to cache during loading operation, the next time when you try to load it from the file you'll simply get a clone of a cached node, instead of parsing the *.node file and retrieving data once again.

Nodes are added to cache on loading, when the second argument of loadNode() is set to 1 (default value):

World::get()->loadNode("mynode.node",1);

When you call clearNode() the node will be removed from cache, and the next time you try to load it the *.node file will be parsed again to get node's data. So, it has nothing to do with restoring the initial state of a NodeReference after modifying it.

When you modify a NodeReference via code, the corresponding *.node file actually remains unchanged until you call World::get()->saveNode() (the same way as you would click Apply when modifying an instance of a NodeReference in the Editor). After saving your changes to a *.node file, you won't get your initial state back.

Thank you!

[dongju.jeong]

thank you for your answer.

 

then, What is the function same as pressing the Cancel button after editing?

Pressing Cancel in the editor returns to the original state.

[silent]

dongju.jeong

There is no magic methods for this :)

You can just make a copy of your node (backup) when you first open it and if changes will be discarded you can simply restore it from backup.

[dongju.jeong]

I understand

thank you.