443     double axis_dir[3] = { det_x, xz * yz - xy * zz, xy * yz - xz * yy };  in ComputeBestFittingPlane()  local
445     if (vtkMath::Dot(weighted_dir, axis_dir) < 0.0)  in ComputeBestFittingPlane()
449     vtkMath::MultiplyScalar(axis_dir, weight);  in ComputeBestFittingPlane()
450     vtkMath::Add(weighted_dir, axis_dir, weighted_dir);  in ComputeBestFittingPlane()
454     double axis_dir[3] = { xz * yz - xy * zz, det_y, xy * xz - yz * xx };  in ComputeBestFittingPlane()  local
456     if (vtkMath::Dot(weighted_dir, axis_dir) < 0.0)  in ComputeBestFittingPlane()
460     vtkMath::MultiplyScalar(axis_dir, weight);  in ComputeBestFittingPlane()
461     vtkMath::Add(weighted_dir, axis_dir, weighted_dir);  in ComputeBestFittingPlane()
465     double axis_dir[3] = { xy * yz - xz * yy, xy * xz - yz * xx, det_z };  in ComputeBestFittingPlane()  local
467     if (vtkMath::Dot(weighted_dir, axis_dir) < 0.0)  in ComputeBestFittingPlane()
471     vtkMath::MultiplyScalar(axis_dir, weight);  in ComputeBestFittingPlane()
472     vtkMath::Add(weighted_dir, axis_dir, weighted_dir);  in ComputeBestFittingPlane()