How-to : Convert window point to 3D point

HOOPS Visualize
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1

Below is sample operator which shows how to convert window point of mouse position to 3D point in the view using ConvertCoordinate.

https://docs.techsoft3d.com/hps/latest/prog_guide/0301_core.html#layout
https://docs.techsoft3d.com/hps/latest/prog_guide/0302_coordinate_systems.html

namespace wpf_sandbox
{
    class MyMarkerOperator : Operator
    {

		private SegmentKey markersegment;

		public MyMarkerOperator() : base(MouseButtons.ButtonLeft(), new ModifierKeys())
		{
		}

		public override string GetName()
		{
			return "WPF_MyMarkerOperator";
		}

		public override void OnViewAttached(View in_attached_view)
		{
			markersegment = in_attached_view.GetSegmentKey().Subsegment("Markers");
			markersegment.GetMaterialMappingControl().SetMarkerColor(new RGBAColor(0, 1, 0));
			markersegment.GetMarkerAttributeControl().SetSize(1);
			markersegment.GetVisibilityControl().SetMarkers(true);
		}

		public override bool OnMouseMove(MouseState in_state)
		{
			HPS.KeyPath path = new KeyPath(in_state.GetEventPath());

			WindowPoint winpoint = in_state.GetLocation();
			HPS.Point point;
			path.ConvertCoordinate(Coordinate.Space.Window,
						winpoint, Coordinate.Space.Object, out point);

			markersegment.InsertMarker(point);
			GetAttachedView().Update();

			return true;
		}
	}
}