[MOAB-dev] Mesh Element Geometry

[Iulian Grindeanu]

Hello, 
There is also tools/measure.cpp that you can use. 
It has methods like 
double measure( moab::EntityType type, 
int num_vertices, 
const double* vertex_coordinates ) 

For 2d entities, it will compute area of decomposition in linear triangles, for 3d it will compute volumes by decomposing in linear tetras 
This may not be what you want; FE codes in general compute areas and volumes by gauss integration, depending on the type of FE. 
You may want to extend the classes implemented in mbcoupler/ElemUtil.hpp, and add a method like "volume", or "measure". 

Iulian 

----- Original Message -----




| Hi Stuart,



| In the examples directory see: SurfArea.cpp, it computes the area of
| all surfaces in the mesh file.

| You might need to modify or write something similar as per your needs.


| Rajeev







| | From: Stuart Slattery <sslattery at wisc.edu>

| | To: moab-dev at mcs.anl.gov

| | Sent: Tuesday, August 28, 2012 5:26 PM

| | Subject: [MOAB-dev] Mesh Element Geometry


| | Hi Everyone


| | Does MOAB have functionality to compute quantities like the volume
| | or
| | area of mesh entities?


| | Thanks


| | Stuart


| | -- Stuart Slattery

| | Nuclear Regulatory Commission Fellow

| | Computational Nuclear Engineering Research Group

| | Department of Engineering Physics

| | University of Wisconsin - Madison


| | 434 Engineering Research Building

| | 1500 Engineering Drive

| | Madison, WI 53706


| | email : sslattery at wisc.edu

| | cell : 608.843.5871

| | url : http://cnerg.engr.wisc.edu







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