[vtkusers] PoinInPolygon arguments

[David Doria]

On Tue, Apr 6, 2010 at 11:33 AM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
> n is the normal to the face of the polygon
> numPts is the number of points in the polygon
> pts is an array of xyz points


The call was pretty nasty:


  double n[3];
  polygon->ComputeNormal(polygon->GetPoints()->GetNumberOfPoints(),
static_cast<double*>(polygon->GetPoints()->GetData()->GetVoidPointer(0)),
n);

  double bounds[6];
  polygon->GetPoints()->GetBounds(bounds);

  cout << "test x in polygon? " << polygon->PointInPolygon(x,
polygon->GetPoints()->GetNumberOfPoints(),
static_cast<double*>(polygon->GetPoints()->GetData()->GetVoidPointer(0)),
bounds, n) << endl;

I just wrote a convenience function and submitted it to the developers
mailing list. If it is approved, in the future you can simply call

cout << "test x in polygon? " << polygon->PointInPolygon(x) << endl;

Thanks,

David