CellulateGrid3D sample for Rajaa

gistfile1.cs

public static bool CellulateGrid3D(List<Rhino.Geometry.Point3d[]> points1,
  List<Rhino.Geometry.Point3d[]> points2,
  out Rhino.Geometry.Line[] wires,
  out List<Rhino.Geometry.Point3d[]> cells,
  out Rhino.Geometry.Brep[] boxes)
{
  bool rc = false;
  if (points1.Count > 0 && points2.Count > 0)
  {
    using (var divide_points1 = new ClassArrayPointArray(points1))
    using (var divide_points2 = new ClassArrayPointArray(points2))
    using (var lines = new SimpleArrayLine())
    using (var breps = new SimpleArrayGeometryPointer())
    using (var cell_points = new ClassArrayPointArray())
    {
      IntPtr ptPoints1 = divide_points1.NonConstPointer();
      IntPtr ptPoints2 = divide_points2.NonConstPointer();
      IntPtr ptWires = lines.NonConstPointer();
      IntPtr ptCells = cell_points.NonConstPointer();
      IntPtr ptBreps = breps.NonConstPointer();
      rc = UnsafeNativeMethods.PTC_Box3DPaneling(ptPoints1, ptPoints2, ptWires, ptCells, ptBreps);
      if( rc )
      {
        wires = lines.ToArray();
        cells = cell_points.ToList();
        var geom_array = breps.ToNonConstArray();
        var brep_list = new List<Rhino.Geometry.Brep>();
        foreach (Rhino.Geometry.GeometryBase geom in geom_array)
        {
          Rhino.Geometry.Brep brep = geom as Rhino.Geometry.Brep;
          if( brep!=null )
            brep_list.Add(brep);
        }
        boxes = brep_list.ToArray();
      }
    }
  }
  if( !rc )
  {
    // set the output items to empty lists and arrays since
    // untrained devs won't pay attention to null
    wires = new Rhino.Geometry.Line[0];
    cells = new List<Rhino.Geometry.Point3d[]>();
    boxes = new Rhino.Geometry.Brep[0];
  }
  return rc;
}

Hi Steve,

Looks like because we have some out parameters, we need to write the function as in the following:

public static bool CellulateGrid3D(List<Rhino.Geometry.Point3d[]> points1,
List<Rhino.Geometry.Point3d[]> points2,
out Rhino.Geometry.Line[] wires,
out List<Rhino.Geometry.Point3d[]> cells,
out Rhino.Geometry.Brep[] boxes)
{
bool rc = false;
if (points1.Count > 0 && points2.Count > 0)
{
using (var divide_points1 = new ClassArrayPointArray(points1))
using (var divide_points2 = new ClassArrayPointArray(points2))
using (var lines = new SimpleArrayLine())
using (var breps = new SimpleArrayGeometryPointer())
using (var cell_points = new ClassArrayPointArray())
{
IntPtr ptPoints1 = divide_points1.NonConstPointer();
IntPtr ptPoints2 = divide_points2.NonConstPointer();
IntPtr ptWires = lines.NonConstPointer();
IntPtr ptCells = cell_points.NonConstPointer();
IntPtr ptBreps = breps.NonConstPointer();
rc = UnsafeNativeMethods.PTC_Box3DPaneling(ptPoints1, ptPoints2, ptWires, ptCells, ptBreps);
if( rc )
{
wires = lines.ToArray();
cells = cell_points.ToList();
var geom_array = breps.ToNonConstArray();
var brep_list = new List<Rhino.Geometry.Brep>();
foreach (Rhino.Geometry.GeometryBase geom in geom_array)
{
Rhino.Geometry.Brep brep = geom as Rhino.Geometry.Brep;
if( brep!=null )
brep_list.Add(brep);
}
boxes = brep_list.ToArray();
return rc;
}
}
}

// Failed
// set the output items to empty lists and arrays since
// untrained devs won't pay attention to null
wires = new Rhino.Geometry.Line[0];
cells = new List<Rhino.Geometry.Point3d[]>();
boxes = new Rhino.Geometry.Brep[0];

return rc;
}

Yep, I was just typing this up off the top of my head. I updated the gist sample.