itkPointSet And itkMesh

I had created an itkPointSetNormal class that was derived from itkPointSet, but now it seems that the functionality I was trying to capture is already in the itkMesh class. My task was to create a point set that contained the normals along with the points. Although calculating the normals would be difficult if the object started with was more complicated than a circle. One solution is to create a ring structure made up of triangular faces that would then be used to calculate the normals of the points. The class itkMesh allows for all of the abilities of itkPointSet with the addition of cells that contain information about the connectivity of two, three, or four points. Each cell can also have a piece of data attached to it. This allows there to be cells with three points representing a face along with a normal attached as the data.

In the current registration, I am using an ellipse as the shape. So to create the ring structure, I will use the equation (x²/79²) + (y²/95²) = 1 which will give me a row of points that represents the boundary of the ellipse, and where all the coordinates in the z-direction are zero. Supplementing that will be a duplicate ellipse except that in this one the z-coordinates will be negative one. This permits the two ellipses to connect together through triangular faces on their perimeter. The calculations of the normals will be handled in the metric class, where the direction will be the average of the normals of the faces that are adjacent to a point.