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Obtaining volume from one mesh object

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  • Obtaining volume from one mesh object

    Hi, So I've been stumped and have been trying to think about a solution for this problem.

    Suppose you have 2 hollow spheres, an outer sphere with a radius of 4 and inner sphere with a radius of 2. Though this example is relatively easy, I am looking to extend this to a general case. I am working with CAD and STL files, which are being stored as a series of Triangles and points, but I am struggling on figuring out on how to extract this volume.

    Is there some way to create a region growing algorithm for this type of problem?

    Thank you
    - M

  • #2
    Originally posted by msetegn View Post
    Suppose you have 2 hollow spheres, an outer sphere with a radius of 4 and inner sphere with a radius of 2. Though this example is relatively easy, I am looking to extend this to a general case. I am working with CAD and STL files, which are being stored as a series of Triangles and points, but I am struggling on figuring out on how to extract this volume.
    What does it mean to "extract this volume" ?
    I guess that you want to create a space filling mesh, e.g. a tetrahedron mesh, bounded by your two spheres. That's a computational geometry problem outside the scope of Open Inventor. But there are toolkits available for that sort of thing. For example, you might take a look at CGAL.

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