vcg::tri::Allocator< MeshType >::PointerUpdater< SimplexPointerType > Class Template Reference

Accessory class to update pointers after eventual reallocation caused by adding elements. More...

#include <allocate.h>

Public Member Functions
void	Clear ()
void	Update (SimplexPointerType &vp)
	Update a pointer to an element of a mesh after a reallocation. More...
bool	NeedUpdate ()
	return true if the allocation operation that initialized this PointerUpdater has caused a reallocation

Public Attributes
SimplexPointerType	newBase
SimplexPointerType	oldBase
SimplexPointerType	newEnd
SimplexPointerType	oldEnd
std::vector< size_t >	remap
bool	preventUpdateFlag

Detailed Description

template<class MeshType>
template<class SimplexPointerType>
class vcg::tri::Allocator< MeshType >::PointerUpdater< SimplexPointerType >

Accessory class to update pointers after eventual reallocation caused by adding elements.

This class is used whenever you trigger some allocation operation that can cause the invalidation of the pointers to mesh elements. Typical situations are when you are allocating new vertexes, edges, halfedges of faces or when you compact their containers to get rid of deleted elements. This object allows you to update an invalidate pointer immediately after an action that invalidate it.

Note

It can also be used to prevent any update of the various internal pointers caused by an invalidation. This can be useful in case you are building all the internal connections by hand as it happens in a importer;

See also

Allocating and Deleting mesh elements

Member Function Documentation

Update()

template<class MeshType >

template<class SimplexPointerType >

void vcg::tri::Allocator< MeshType >::PointerUpdater< SimplexPointerType >::Update ( SimplexPointerType &  vp )

inline

Update a pointer to an element of a mesh after a reallocation.

 The updating is correctly done only if this PointerUpdater have been passed to the corresponing allocation call. \sa \ref allocation

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The documentation for this class was generated from the following file:

• /home/cignoni/devel/vcglib/vcg/complex/allocate.h