141 lines
3.5 KiB
Markdown
Executable File
141 lines
3.5 KiB
Markdown
Executable File
---
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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"](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"](MeshEdge.md) <img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow4.gif">"30"
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"30"](GenRegion.md)
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------------------------------------------------------------------------
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------------------------------------------------------------------------
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**MESH ATTRIBUTE OPERATORS**
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------------------------------------------------------------------------
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*void* **MESH\_AddAtt**(*PMeshObj* mesh, *char
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**attname, *AttType*
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attype, *Rank* rank,
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*MType* mtype, *Interp* interp, *int* persist, *char
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**ioflags,
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*double* defval);
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*AttType*, *Rank* and *Interp* are typedef enums which are available if
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one
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includes "*mstkla.h*". The specific names (which are pretty much the
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strings
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that are used in LaGriT) are given in *mstkla\_types.h* (See [MSTKLA
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typedefs](prelim.md))
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'persist' must be 0 for temporary atts and 1 for permanent attribs
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'ioflags' is a string as in lagrit (may be any combination of 'a', 'g',
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'f', 's', 'x', 'no' for
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AVS, GMV, FEHM, SGI, LaGriT or None)
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mtype is **MVERTEX** if the attribute is to be node based and is
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**MFACE** or
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**MREGION** if the attribute is to be element based depending on whether
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the mesh
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is 2D or 3D respectively.
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------------------------------------------------------------------------
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*void* **MESH\_ModAtt**(*PMeshObj* mesh, *char
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**attname, *char
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**fieldname, *int* inew,
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*double* rnew, *char
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**cnew);
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Here depending on the fieldname, one has to fill the right value for
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inew,
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rnew or cnew.
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*
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*
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* NOT TESTED
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*
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*
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*
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------------------------------------------------------------------------
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*void* **MESH\_CopyAtt**(*PMeshObj* trgmsh, *PMeshObj* srcmsh, *char*
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*trgatt, *char*
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*srcatt);
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*
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*
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* NOT TESTED
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*
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*
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*
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------------------------------------------------------------------------
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*void* **MESH\_DelAtt**(*PMeshObj* mesh, *char
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**attname);
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------------------------------------------------------------------------
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*void* **MESH\_SetAtt**(*PMeshObj* mesh, *char
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**attname, *int* ifirst,
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*int* ilast, *int*
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istride, *char
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**psetname, *double* value);
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If psetname is specified ifirst is ignored
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*
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*
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* NOT TESTED
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*
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*
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*
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------------------------------------------------------------------------
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------------------------------------------------------------------------
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Once attributes have been created, one can go to an individual mesh
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entity
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and ask for the value of an attribute for that entity or change the
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value.
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The entities can be Mesh Vertices (always), Mesh Faces (for a surface
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mesh
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only), Mesh Regions (for a solid mesh only).
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For example one can use **MR\_GetAttVal** operator to get the value of
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an
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attribute for a given element or use **MR\_SetAttVal** to set it.
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See attribute operators for[Mesh Vertices](MeshVertex.md#MV-Attribs),[Mesh Regions](MeshRegion.md#MR-Attribs) and [Mesh
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Faces](MeshFace.md#MF-Attribs)
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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"](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"](MeshEdge.md) <img height="300" width="300" src="https://lanl.github.io/LaGriT/assets/images/arrow4.gif">"30"
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"30"](GenRegion.md)
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