manolas
/
vcglib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Corrected bug on the return of a wrong iterator

This commit is contained in:
Paolo Cignoni 2004-03-12 15:25:29 +00:00
parent a341239296
commit 1416372b32
1 changed files with 27 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
vcg/complex/trimesh/allocate.h
View File

@ -24,6 +24,9 @@
History
$Log: not supported by cvs2svn $
Revision 1.2 2004/03/03 15:35:52 cignoni
Yet another cr lf mismatch
Revision 1.1 2004/02/24 21:36:42 cignoni
grouped documentation, changed typenames and reflection mechanism
@ -35,7 +38,10 @@ Initial commit
namespace vcg {
namespace tri {
/** \addtogroup trimesh */
/*@{*/
/// Class to safely add vertexes and faces to a mesh updating all the involved pointers.
/// It provides static memeber to add either vertex or faces to a trimesh.
template <class AllocateMeshType>
class Allocator
{
@ -49,8 +55,8 @@ typedef typename MeshType::FaceType FaceType;
typedef typename MeshType::FacePointer FacePointer;
typedef typename MeshType::FaceIterator FaceIterator;
/* This class is used when allocating new vertex and faces to update
the pointer that can be changed when resizing the vector of vertex or faces.
/** This class is used when allocating new vertexes and faces to update
the pointers that can be changed when resizing the involved vectors of vertex or faces.
It can also be used to prevent any update of the various mesh fields
(e.g. in case you are building all the connections by hand as in a importer);
*/
@ -69,7 +75,7 @@ public:
SimplexPointerType newBase;
SimplexPointerType newEnd;
SimplexPointerType oldEnd;
bool preventUpdateFlag; // when true no update is considered necessary.
bool preventUpdateFlag; /// when true no update is considered necessary.
};
@ -108,10 +114,11 @@ static VertexIterator AddVertices(MeshType &m,int n, PointerUpdater<VertexPointe
}
// e poiche' lo spazio e' cambiato si ricalcola anche last da zero
if(last!=0)
unsigned int siz=m.vert.size()-n;
if(last!=0)
{
last = m.vert.begin();
advance(last,n);
advance(last,siz);
}
else last=m.vert.begin();
}
@ -138,12 +145,16 @@ static FaceIterator AddFaces(MeshType &m, int n)
*/
static FaceIterator AddFaces(MeshType &m, int n, PointerUpdater<FacePointer> &pu)
{
FaceIterator last=m.face.end();
FaceIterator last=0;
pu.Clear();
if(m.face.empty()) pu.oldBase=0; // if the vector is empty we cannot find the last valid element
else pu.oldBase=&*m.face.begin();
unsigned int siz=0; for(int i=0; i<n; ++i)
if(m.face.empty()) {
pu.oldBase=0; // if the vector is empty we cannot find the last valid element
last=0;
} else {
pu.oldBase=&*m.face.begin();
last=m.face.end();
}
for(int i=0; i<n; ++i)
{
m.face.push_back(MeshType::FaceType());
m.face.back().ClearFlags();
@ -155,7 +166,7 @@ static FaceIterator AddFaces(MeshType &m, int n, PointerUpdater<FacePointer> &pu
if(pu.NeedUpdate())
{
FaceIterator fi;
FaceIterator fi;
for (fi=m.face.begin(); fi!=m.face.end(); ++fi)
if(!(*fi).IsD())
{
@ -178,17 +189,19 @@ static FaceIterator AddFaces(MeshType &m, int n, PointerUpdater<FacePointer> &pu
}
}
// e poiche' lo spazio e' cambiato si ricalcola anche last da zero
unsigned int siz=m.face.size()-n;
if(last!=0)
{
last = m.face.begin();
advance(last,n);
advance(last,siz);
}
else last=m.face.begin();
else last=m.face.begin();
}
return last;
}
}; // end class
/*@}*/
} // End Namespace TriMesh
} // End Namespace vcg