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PlanaPlanar Ops C# Sample

Implementation

All relevant functionality i simplemented by the PlanarOpsDlg class.

Control of the clipping plane on Show and Enable check boxes is done via the IClipPlane interface stored in the m_plane member variable. The interface is obtained the UpdatePlanePresentation() method.

This method also obtains IAxis interface, which gives access to the location and orientation of the plane. The interface is stored in the m_iAxis member.

The main cutting operation is performed by the OnCut() method on "Cut Permanently" button click. Depending on state of  the "Keep Solid" check box the method uses either IBoolSection.Subtract() or IBoolSectionEx.Execute() methods. Notice that the second object in the operation is an abstract one, i.e. it is not a member of the model, although it is represented by ISection iSectPlane interface. iSectPlane is created in PlanarOpsDlg::CreatePlane() which creates the plane using object generator and positions it using a new IAxis interface.