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docs/pages/mstkla/MeshVertex.md
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272
docs/pages/mstkla/MeshVertex.md
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GENERATOR: 'Mozilla/4.05C-SGI [en] (X11; I; IRIX64 6.5 IP28) [Netscape]'
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---
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow2.gif">"30"
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"30"](http://www.ees.lanl.gov/staff/rao/mstkla/mstkla.md#MESH%20VERTEX:) <img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow3.gif">"30"
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"30"](http://www.ees.lanl.gov/staff/rao/mstkla/MeshEdge.md) <img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow4.gif">"30"
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"30"](http://www.ees.lanl.gov/staff/rao/mstkla/GenRegion.md)
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------------------------------------------------------------------------
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------------------------------------------------------------------------
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**MESH VERTEX OPERATORS**
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------------------------------------------------------------------------
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*int* **MV\_Number**(*PMeshObj* mesh, *PMeshVert* v);
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Return an ID number for the mesh vertex.
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------------------------------------------------------------------------
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*VType* **MV\_Type**(*PMeshObj* mesh, *PMeshVert* v);
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Return the mesh vertex type. Most useful in checking if a mesh vertex
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has been deleted or if it is a parent vertex on an interface
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------------------------------------------------------------------------
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*PGeomEntity* **MV\_GMEntity**(*PMeshObj* mesh, *PMeshVert* v);
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Return the geometric model entity the mesh vertex is classified on.
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------------------------------------------------------------------------
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*GType* **MV\_GMtype**(*PMeshObj* mesh, *PMeshVert* v);
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Return the type of geometric model entity the mesh vertex is
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classified on (GREGION, GFACE, GEDGE, GVERTEX, GUNKNOWN).
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------------------------------------------------------------------------
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*void* **MV\_Coords**(*PMeshObj* mesh, *PMeshVert* v, *double*
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*xyz);
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Coordinates of mesh vertex
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------------------------------------------------------------------------
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*int* **MV\_IsParent**(*PMeshObj* mesh, *PMeshVert* v);
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/note1.gif">"31" "32"A vertex not on an
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interface is its own parent - return value will be 1
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------------------------------------------------------------------------
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*int* **MV\_IsChild**(*PMeshObj* mesh, *PMeshVert* v);
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/note1.gif">"31" "32"A vertex not on an
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interface is its own child - return value will be 1
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------------------------------------------------------------------------
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*PMeshVert* **MV\_Parent**(*PMeshObj* mesh, *PMeshVert* v);
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/note1.gif">"31" "32"For a vertex not on an
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interface, the vertex itself is returned
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------------------------------------------------------------------------
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*void* **MV\_Children**(*PMeshVert* mesh, *PMeshVert* v, *int*
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*nvc,
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*PMeshVert*
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*
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*vc)
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/note1.gif">"31" "32"For a vertex not on an
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interface, a 1 item array with the vertex
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pointer itself is returned and nvc = 1
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------------------------------------------------------------------------
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*void* **MV\_Edges**(*PMeshObj* mesh, *PMeshVert* v, *int*
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*nve,
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*PMeshEdge*
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*
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*vedges);
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List of mesh edges connected to vertex. For this routine to work
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properly, one must call MESH\_BldAdj first. If not the routine will
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just return 0.
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If the vertex is a parent vertex, then the operator will return all
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the edges connected to all the child vertices of the vertex. The edge
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returned will be of type PARENT. Each of these edges will be made up
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of 'v' and any other parent vertex it is connected to. If it is a
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child vertex, then it will return edges connected only to itself. In
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this case all the edges will be of type CHILD. Each edge will be made
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up of the child vertex 'v' and any other child vertex it is connected
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to. Note that vertices on 2-manifold (single material) boundaries and
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in the interior can be considered a parent or a child as required.
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/bullet12.gif">"27" "31"
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*
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*
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* IMPORTANT
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*
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*
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*
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When finished with the list of edges, call ME\_Delete on each of the
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edges and free the vedges list. This is important since the MeshEdge
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data structures are created on the fly and the MESH object does not
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keep track of them.
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------------------------------------------------------------------------
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*void* **MV\_Faces**(*PMeshObj* mesh, *PMeshVert* v, *int*
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*nvf,
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*PMeshFace*
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*
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*vfaces);
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/note1.gif">"31" "32"
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*
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* NOT YET TESTED
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*
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*
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List of mesh faces connected to vertex. For this routine to work
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properly, one must call MESH\_BldAdj first. If not the routine will
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just return 0.
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The behavior of the operator for parent and child vertices is the same
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as it is for MV\_Edges.
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/bullet12.gif">"27" "31"
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*
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*
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* IMPORTANT
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*
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*
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*
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When finished with the list of faces, call MF\_Delete on each of the
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faces and free the vfaces list. This is important since the MeshFace
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data structures are created on the fly and the MESH object does not
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keep track of them.
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------------------------------------------------------------------------
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*int* **MV\_numRegions**(*PMeshObj* mesh, *PMeshVert* v);
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Number of mesh regions connected to mesh vertex. For this routine to
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work properly, one must call MESH\_BldUpAdj first. If not the routine
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will just return 0.
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------------------------------------------------------------------------
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*void* **MV\_Regions**(*PMeshObj* mesh, *PMeshVert* v, *int*
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*nr,
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*PMeshRegn*
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*
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*regns);
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List of mesh regions connected to mesh vertex. For this routine to
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work properly, one must call MESH\_BldUpAdj first. If not the routine
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will just return 0 for the number of regions and a NULL pointer for
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the region list.
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For a parent vertex, mesh regions in all the material regions
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connected to all its children are returned. For a child vertex, only
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mesh regions in the particular material region pointed to by the child
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are returned.
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------------------------------------------------------------------------
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[]{#MV-Attribs*int* **MV\_GetAttVal**(*PMeshObj* mesh, *PMeshVert* v,
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*char
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**attname, *int
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**ival,
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*double
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**rval, *char
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**cval, *void
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*
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**pval, *AttType
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**atype);
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Depending on the type of the attribute, the appropriate field will be
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filled on succesful completion. Arrays are returned in pval, integer in
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ival and real number in rval (I don't think lagrit supports character
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attributes)
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------------------------------------------------------------------------
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*int* **MV\_SetAttVal**(*PMeshObj* mesh, *PMeshVert* v, *char
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**attname, *int* ival,
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*double* rval, *char* cval, *void
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**pval);
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This is similar to the GetAttVal routine - depending on the type and
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rank, one sends in a value with the right variable
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*
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*
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* PERHAPS these routines need an additional variable, "rank" but
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for
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now.....
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<img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow2.gif">"30"
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"30"](http://www.ees.lanl.gov/staff/rao/mstkla/mstkla.md#MESH%20VERTEX:) <img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow3.gif">"30"
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"30"](http://www.ees.lanl.gov/staff/rao/mstkla/MeshEdge.md) <img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow4.gif">"30"
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"30"](http://www.ees.lanl.gov/staff/rao/mstkla/GenRegion.md)
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