Deleting Internal Faces in a Mesh

I have a mesh which is composed of contiguous cubes, like this example (top right image):

http://www.mathworks.com.au/matlabcentral/fileexchange/screenshots/6499/original.jpg

I need to remove all the shared faces of the cubes, so the structure becomes one continuous solid.

Is there a way to select all the shared faces of adjacent cubes and remove them?

[John D'Errico]

It IS easy to remove shared faces. (Despite what Star said.) At least relatively easy. It would take only a few lines of code. However, until I know how your mesh is defined, I can't really answer that easily.

Do you have a list of cubes? For example, a cubic mesh would be defined in terms of a list of vertices, and a set of 8 indexes into that list which define the 8 corners of each cube. If so, then the removal of interior faces is trivial.

So if you can be more specific, then I can help you.

[Star Strider]

Star said: ‘It’s difficult to be specific without your code ...’

[Paul Safier]

John or Star: can you tell me how you would remove the internal faces from the geometry created with this:

pdem = createpde;
g = multicuboid(40,40,0.1*ones(10,1),'Zoffset',[0:0.1:0.9]);
pdem.Geometry = g;
generateMesh(pdem, 'Hmax',4,'Hmin',4);

Thanks!

Answer 1

[Star Strider]

It’s difficult to be specific without your code, but if you’re using the surf function, see if:

surf( ... , 'FaceColor','interp', ... )

improves things.