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ConstPerMeshAttributeHandle

This commit is contained in:
alemuntoni 2021-03-23 16:52:56 +01:00
parent 94dc161edb
commit 34af1c91bd
2 changed files with 46 additions and 1 deletions
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34
vcg/complex/allocate.h
View File

@ -2121,6 +2121,15 @@ public:
return false;
}
template <class ATTR_TYPE>
static
bool IsValidHandle(const MeshType & m, const typename MeshType::template ConstPerMeshAttributeHandle<ATTR_TYPE> & a){
if(a._handle == nullptr) return false;
for(AttrIterator i = m.mesh_attr.begin(); i!=m.mesh_attr.end();++i)
if ( (*i).n_attr == a.n_attr ) return true;
return false;
}
template <class ATTR_TYPE>
static
typename MeshType::template PerMeshAttributeHandle<ATTR_TYPE>
@ -2159,6 +2168,13 @@ public:
return AddPerMeshAttribute<ATTR_TYPE>(m,name);
}
template <class ATTR_TYPE>
static
typename MeshType::template ConstPerMeshAttributeHandle<ATTR_TYPE>
GetPerMeshAttribute(const MeshType & m, std::string name = std::string("")){
return FindPerMeshAttribute<ATTR_TYPE>(m,name);
}
template <class ATTR_TYPE>
static
typename MeshType::template PerMeshAttributeHandle<ATTR_TYPE>
@ -2185,6 +2201,24 @@ public:
return typename MeshType:: template PerMeshAttributeHandle<ATTR_TYPE>(nullptr,0);
}
template <class ATTR_TYPE>
static
typename MeshType::template ConstPerMeshAttributeHandle<ATTR_TYPE>
FindPerMeshAttribute( const MeshType & m, const std::string & name){
if (!name.empty()){
PointerToAttribute h1; h1._name = name;
typename std::set<PointerToAttribute > ::iterator i;
i =m.mesh_attr.find(h1);
if(i!=m.mesh_attr.end()){
if((*i)._sizeof == sizeof(ATTR_TYPE) ){
return typename MeshType::template ConstPerMeshAttributeHandle<ATTR_TYPE>((*i)._handle,(*i).n_attr);
}
}
}
return typename MeshType:: template ConstPerMeshAttributeHandle<ATTR_TYPE>(nullptr,0);
}
template <class ATTR_TYPE>
static void GetAllPerMeshAttribute(const MeshType & m, std::vector<std::string> &all){
typename std::set<PointerToAttribute > :: iterator i;

13
vcg/complex/base.h
View File

@ -387,7 +387,18 @@ public:
Attribute<ATTR_TYPE> * _handle;
int n_attr;
ATTR_TYPE & operator ()(){ return *((ATTR_TYPE*)((Attribute<ATTR_TYPE> *)_handle)->DataBegin());}
ATTR_TYPE & operator ()(){ return *((ATTR_TYPE*) (_handle->DataBegin()));}
};
template <class ATTR_TYPE>
class ConstPerMeshAttributeHandle{
public:
ConstPerMeshAttributeHandle(){_handle=nullptr;}
ConstPerMeshAttributeHandle(const void *ah,const int & n):_handle ( (const Attribute<ATTR_TYPE> *)ah ),n_attr(n){}
const Attribute<ATTR_TYPE> * _handle;
int n_attr;
const ATTR_TYPE & operator ()(){ return *((const ATTR_TYPE*)(_handle->DataBegin()));}
};
// Some common Handle typedefs to simplify use