NETHook Mirror

[samuelhanson]

I have a problem when mirroring geometry in C#, MX9.

The graphics change and appear mirrored, but any operation or analysis uses the original location.

var allGeometry = SearchManager.GetGeometry();

foreach (var geo in allGeometry)
{
   geo.Mirror(new Line3D(new Point3D(0, 0, 0), new Point3D(1, 0, 0)), SearchManager.GetSystemView(Mastercam.IO.Types.GraphicsViewType.Top));
   geo.Commit();
}

 

And after mirror:

 

 

How does one properly mirror geometry?

[Roger Martin from CNC Software]

There appears to be a defect with the Mirror member method in the Geometry class.
The Geometry.Mirror and Geometry.Rotate methods can take a lot of time if you have hundreds of entities.
A faster way (that also works!) is to use the XForm methods in GeometryManipulationManager -> 

/// <summary> Mirror all geometry. </summary>
///
/// <returns> Success / Failure status. </returns>
private bool MirrorAll()
  {
  // The GeometryManipulationManager XForm methods work on the 'selected' geometry.
  Mastercam.IO.SelectionManager.SelectAllGeometry();

  var line = new Line3D(new Point3D(0, 0, 0), new Point3D(1, 0, 0));
  var view = SearchManager.GetSystemView(Mastercam.IO.Types.GraphicsViewType.Top);
  var result = Mastercam.GeometryUtility.GeometryManipulationManager.MirrorGeometry(line, view, false);

  if (result)
    {
    // If we need to manipulate these geometry items further (as NET-Hook Geometry objects),
    // we can retrieve the Result of the last XForm operation ->
    var xFormResultGeometry = Mastercam.Support.SearchManager.GetResultGeometry();
    // Do something with this geometry?
    }

  return result;
  }

[samuelhanson]

That is working for me - thank you.

[samuelhanson]

In case anyone else runs into this, here's a C# NET-Hook function that mirrors specific geometry with GeometryManipulationManager while retaining user selections.

public static void mirrorGeometry(Geometry[] geometry)
        {
            var line = new Line3D(new Point3D(0, 0, 0), new Point3D(1, 0, 0));
            var view = SearchManager.GetSystemView(Mastercam.IO.Types.GraphicsViewType.Top);
            var selectedGeometry = SearchManager.GetSelectedGeometry();

            SelectionManager.UnselectAllGeometry();

            foreach (var geo in geometry)
            {
                geo.Selected = true;
                geo.Commit();
            }

            Mastercam.GeometryUtility.GeometryManipulationManager.MirrorGeometry(line, view, false);

            SelectionManager.UnselectAllGeometry();

            foreach (var geo in selectedGeometry)
            {
                geo.Retrieve();
                geo.Selected = true;
                geo.Commit();
            }

            GraphicsManager.ClearColors(new GroupSelectionMask(true));
            GraphicsManager.Repaint(true);
        }