private static IBSplineSurfaceEntity ByPointsCore(ref Point[][] points, int uDegree, int vDegree)
{
if (uDegree < 2)
throw new System.ArgumentException(string.Format(Properties.Resources.LessThan, "uDegree", "two"), "uDegree");
if (uDegree > 10)
throw new System.ArgumentException(string.Format(Properties.Resources.GreaterThan, "uDegree", "ten"), "uDegree");
if (vDegree < 2)
throw new System.ArgumentException(string.Format(Properties.Resources.LessThan, "vDegree", "two"), "vDegree");
if (vDegree > 10)
throw new System.ArgumentException(string.Format(Properties.Resources.GreaterThan, "vDegree", "ten"), "vDegree");
IPointEntity[][] pts = points.ToPointEntityArray(true); //must be rectangular array.
if (null == pts)
throw new System.ArgumentException(string.Format(Properties.Resources.InvalidArguments, "points"), "points");
// making sure if # of controlVertices > degree by atleast 1
int udiff = pts.Length - uDegree;
if (udiff < 1)
uDegree += udiff - 1;
int vdiff = pts[0].Length - vDegree;
if (vdiff < 1)
vDegree += vdiff - 1;
if (pts.Length < 2)
throw new System.ArgumentException(string.Format(Properties.Resources.LessThan, "Number of points in U direction", "two"), "points");
if (pts[0].Length < 2)
throw new System.ArgumentException(string.Format(Properties.Resources.LessThan, "Number of points in V direction", "two"), "points");
points = pts.ToPointArray();
IBSplineSurfaceEntity entity = HostFactory.Factory.BSplineSurfaceByPoints(pts, uDegree, vDegree);
if (entity == null)
throw new System.Exception(string.Format(Properties.Resources.OperationFailed, "BSplineSurface.ByPoints"));
return entity;
}