/// <summary>
/// compute normals for a all vectors of pointSource
/// </summary>
/// <param name="pointsSource"></param>
/// <returns></returns>
public List <Vector3> Normals(PointCloudVertices pointsSource, bool centerOfMassMethod, bool flipNormalWithOriginVector)
{
Vector3 normalPrevious = new Vector3();
List <Vector3> normals = new List <Vector3>();
for (int i = 0; i < pointsSource.Count; i++)
{
Vertex v = pointsSource[i];
List <Vector3d> sublist = new List <Vector3d>();
for (int j = 0; j < v.KDTreeSearch.Count; j++)
{
Vertex vNearest = pointsSource[v.KDTreeSearch[j].Key];
sublist.Add(pointsSource[v.KDTreeSearch[j].Key].Vector);
}
if (centerOfMassMethod)
{
Vector3d centroid = sublist.CalculateCentroid();
sublist.SubtractVector(centroid);
}
else
{
sublist.SubtractVector(v.Vector);
}
SVD_ForListVectorsMassCentered(sublist, true);
Vector3 normal = V.ExtractRow(2).ToVector();
if (flipNormalWithOriginVector)
{
AdjustOrientationWithVector(ref normal, v.Vector.ToVector());
}
//if (i > 0)
// AdjustOrientation(ref normal, normalPrevious);
normalPrevious = normal;
normal.Normalize();
normals.Add(normal);
v.IndexNormals.Add(normals.Count - 1);
// to show ALL vectors (including the 2 vectors on the plane:
//AddAllPlaneVectors(v, normals);
}
return(normals);
}
