Order of points in a boundary patch
 

Hello,

I try to get the order of points (whitout redundancy) in a boundary field to correctly apply a pointVectorField to modify a mesh. I precise that I use an external software to evaluate this field.

I tried with a polyPatch :

label PatchId = mesh.boundaryMesh().findPatchID("name");

const polypatch& namePolyPatch = mesh.boundaryMesh()[PatchID];

But after that I don't know what to do. How extract ID of points or they coordinates in the right order that OpenFOAM use ?

Thanks for helping.

Camille

Hello, it's me again.

I think I am not far away. I use :

label PatchId = mesh.boundaryMesh().findPatchID("name");

const polypatch& namePolyPatch = mesh.boundaryMesh()[PatchID];

labelList test(namePolyPatch.boundaryPoints());

forAll( test , pos)
{
Info << test[pos] << endl;
}

But the number of label given is not enought so I thing it's not a good method.

I keep searching.

Hello, It's me again :).

I think I succeed in having what I want (only the position). It's not a pretty solution but it could help. My code :


#include "setRootCase.H"
#include "createTime.H"
#include "createMesh.H"

label PatchID = mesh.boundaryMesh().findPatchID("tuyau");

const polyPatch& patchFound = mesh.boundaryMesh()[PatchID];

labelList labelPatchFound( patchFound.meshPoints() );

pointField meshPoints(mesh.points());

long nombre = 0;

forAll(labelPatchFound , label)
{
vector coord = meshPoints[labelPatchFound[label]];
Info << coord[0] << " " << coord[1] << " " << coord[2] << endl;
nombre++;
}

Info << nombre << endl;





Any comment will be appreciated.

Hi Camille,

I need to find coordinate points of the mesh also so this here helps a lot.

I am very interested, however, in finding out how do you know for example that by typing .meshPoints() you will get the mesh points. Is there a list of classes somewhere where I can read about the name of the different classes and what they do?

I will appreciate any help. Thanks

Hi Camille,

Thanks for your hints on finding the coordinates, it was much of help.

you can use the localPoints function, too.

this code does the same:

Hi i have a problem to access the coordinate of points as assign face cell. i used localPoints() funtion. when I use the mesh.boundaryMesh()[patchWallID].localPoints, it works, while i use for loop to access the coordinate of points, errors occured, it hints 'const class Foam::face' has no member named 'localPoints'. if I want to access the coorinate of points of boundaryface[i] what should i do? Thanks.
************code******************
for(int ii=0; ii<mesh.boundaryMesh().size();ii++)
Info<<mesh.boundaryMesh()[patchWallID][ii].localPoints<<endl;
**************************************

kind regards
Fan Fei

hello Fanfei,

I do not know much about this, but I think you need to add parentasis () at the end so: .localPoints()

Hope this helps
Wouter

Hello,

I need to log the position and velocity of a time dependent problem. I know this piece of code will be really helpful for me. However, since I am now to OF am not able to figure out where to add.

Any help will be appreciated.!!