Convert a xyz surface into a 3D array?

I have a the following input:

surface = struct('vertices', [....],'faces',[....];

Which I can draw as:

patch(surface)

But what I need is a 3D logical array, where the contained volumes are true.

Is there a quick way to do this?

Answer 1

[Sean de Wolski]

Edit per clarification

Use this utility from the File Exchange:

http://www.mathworks.com/matlabcentral/fileexchange/27390-mesh-voxelisation

[Nathan Orloff]

Thanks for the comment.

I use:

http://www.mathworks.com/help/matlab/ref/struct.html

Then I create a structure:

mysurface = struct('vertices', n_verts,'faces',n_faces);

Where n_verts and n_faces are vectors. n_verts are the xyz points for all of the vertices. n_verts is a 3 x N vector where N is the number of vertices. n_faces is also a 3 x N vector. When I call:

patch(mysurface)

It creates 3D image of my surface.

I want to create a 3D logical array where the 1's are the regions contained in the surface. This way I can use bwlabel and all the other image processing tricks on my surface.

Is this clear?

[Sean de Wolski]

Ahh, gotcha. I was thinking the other direction (i.e. given a logical volume, get the struct).

See edits