// Author : Edward AGAPOV (eap)
// This file holds some low level algorithms extracted from SMESH_MeshEditor
-// to make them accessible from Controls package
+// to make them accessible from Controls package, and more
#ifndef __SMESH_MeshAlgos_HXX__
class gp_Pnt;
class gp_Ax1;
+class Bnd_B3d;
class SMDS_MeshNode;
class SMDS_MeshElement;
class SMDS_Mesh;
const double radius,
SMDSAbs_ElementType type,
std::vector< const SMDS_MeshElement* >& foundElems) = 0;
+ /*!
+ * \brief Return elements whose bounding box intersects a given bounding box
+ */
+ virtual void GetElementsInBox( const Bnd_B3d& box,
+ SMDSAbs_ElementType type,
+ std::vector< const SMDS_MeshElement* >& foundElems) = 0;
/*!
* \brief Find out if the given point is out of closed 2D mesh.
*/
namespace SMESH_MeshAlgos
{
+ /*!
+ * \brief Return SMESH_NodeSearcher. The caller is responsible for deleting it
+ */
+ SMESHUtils_EXPORT
+ SMESH_NodeSearcher* GetNodeSearcher( SMDS_Mesh& mesh );
+
+ SMESHUtils_EXPORT
+ SMESH_NodeSearcher* GetNodeSearcher( SMDS_ElemIteratorPtr elemIt );
+
+ /*!
+ * \brief Return SMESH_ElementSearcher. The caller is responsible for deleting it
+ */
+ SMESHUtils_EXPORT
+ SMESH_ElementSearcher* GetElementSearcher( SMDS_Mesh& mesh,
+ double tolerance=-1.);
+ SMESHUtils_EXPORT
+ SMESH_ElementSearcher* GetElementSearcher( SMDS_Mesh& mesh,
+ SMDS_ElemIteratorPtr elemIt,
+ double tolerance=-1. );
+
+
/*!
* \brief Return true if the point is IN or ON of the element
*/
MarkElems( (*it)->nodesIterator(), isMarked );
}
- /*!
- * \brief Return SMESH_NodeSearcher. The caller is responsible for deleting it
- */
- SMESHUtils_EXPORT
- SMESH_NodeSearcher* GetNodeSearcher( SMDS_Mesh& mesh );
-
- SMESHUtils_EXPORT
- SMESH_NodeSearcher* GetNodeSearcher( SMDS_ElemIteratorPtr elemIt );
-
- /*!
- * \brief Return SMESH_ElementSearcher. The caller is responsible for deleting it
- */
- SMESHUtils_EXPORT
- SMESH_ElementSearcher* GetElementSearcher( SMDS_Mesh& mesh,
- double tolerance=-1.);
- SMESHUtils_EXPORT
- SMESH_ElementSearcher* GetElementSearcher( SMDS_Mesh& mesh,
- SMDS_ElemIteratorPtr elemIt,
- double tolerance=-1. );
-
typedef std::vector<const SMDS_MeshNode*> TFreeBorder;
* Returns TFreeBorder's coincident within the given tolerance.
* If the tolerance <= 0.0 then one tenth of an average size of elements adjacent
* to free borders being compared is used.
- *
- * (Implemented in ./SMESH_FreeBorders.cxx)
*/
SMESHUtils_EXPORT
void FindCoincidentFreeBorders(SMDS_Mesh& mesh,
double tolerance,
CoincidentFreeBorders & foundFreeBordes);
+ // Implemented in ./SMESH_FreeBorders.cxx
+
/*!
* Returns all or only closed TFreeBorder's.
* Optionally check if the mesh is manifold and if faces are correctly oriented.
- *
- * (Implemented in ./SMESH_FreeBorders.cxx)
*/
SMESHUtils_EXPORT
void FindFreeBorders(SMDS_Mesh& mesh,
const bool closedOnly,
bool* isManifold = 0,
bool* isGoodOri = 0);
+ // Implemented in ./SMESH_FreeBorders.cxx
+
/*!
* Fill a hole defined by a TFreeBorder with 2D elements.
- *
- * (Implemented in ./SMESH_FillHole.cxx)
*/
SMESHUtils_EXPORT
void FillHole(const TFreeBorder & freeBorder,
SMDS_Mesh& mesh,
std::vector<const SMDS_MeshElement*>& newFaces);
+ // Implemented in ./SMESH_FillHole.cxx
/*!
* \brief Find nodes whose merge makes the element invalid
- *
- * (Implemented in SMESH_DeMerge.cxx)
*/
SMESHUtils_EXPORT
void DeMerge(const SMDS_MeshElement* elem,
std::vector< const SMDS_MeshNode* >& newNodes,
std::vector< const SMDS_MeshNode* >& noMergeNodes);
+ // Implemented in SMESH_DeMerge.cxx
+
+
+ typedef std::vector< std::pair< const SMDS_MeshElement*, const SMDS_MeshElement* > > TEPairVec;
+ typedef std::vector< std::pair< const SMDS_MeshNode*, const SMDS_MeshNode* > > TNPairVec;
+ /*!
+ * \brief Create an offset mesh of given faces
+ * \param [in] faceIt - the input faces
+ * \param [in] theFixIntersections - to fix self intersections of the offset mesh or not
+ * \param [out] new2OldFaces - history of faces
+ * \param [out] new2OldNodes - history of nodes
+ * \return SMDS_Mesh* - the new offset mesh, a caller should delete
+ */
+ SMESHUtils_EXPORT
+ SMDS_Mesh* MakeOffset( SMDS_ElemIteratorPtr faceIt,
+ SMDS_Mesh& mesh,
+ const double offset,
+ const bool theFixIntersections,
+ TEPairVec& new2OldFaces,
+ TNPairVec& new2OldNodes );
+ // Implemented in ./SMESH_Offset.cxx
+
+
+ /*!
+ * \brief Divide a mesh face into triangles
+ */
+ // Implemented in ./SMESH_Triangulate.cxx
+
+ class SMESHUtils_EXPORT Triangulate
+ {
+ public:
+
+ static int GetNbTriangles( const SMDS_MeshElement* face );
+
+ int GetTriangles( const SMDS_MeshElement* face,
+ std::vector< const SMDS_MeshNode*>& nodes);
+ private:
+
+ bool triangulate( std::vector< const SMDS_MeshNode*>& nodes, const size_t nbNodes );
+
+ /*!
+ * \brief Vertex of a polygon. Together with 2 neighbor Vertices represents a triangle
+ */
+ struct PolyVertex
+ {
+ SMESH_NodeXYZ _nxyz;
+ gp_XY _xy;
+ PolyVertex* _prev;
+ PolyVertex* _next;
+
+ void SetNodeAndNext( const SMDS_MeshNode* n, PolyVertex& v );
+ void GetTriaNodes( const SMDS_MeshNode** nodes) const;
+ double TriaArea() const;
+ bool IsInsideTria( const PolyVertex* v );
+ PolyVertex* Delete();
+ };
+ std::vector< PolyVertex > _pv;
+ };
+
} // namespace SMESH_MeshAlgos
