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Turbine Sample

Source code for Turbine sample is available in Samples\VC folder of the installation directory. If you are going to compile the project we suggest to copy whole VC directory to location outside of the installation folder. Turbine is an MFC dialog-based application which displays simplified model of a turbine using KernelCAD ActiveX control and allows to modify geometrical parameters of the model.

Turbine sample demonstrates usage of three-tier design of an application which incorporates 3D simulation.. In addition to GUI and KernelCAD software tiers presented in the previous samples Turbine sample adds layer of classes which encapsulates business or rather geometrical logic of the simulated process.   

Implementation

Specifics of this sample is that the application uses two additional classes which isolate geometrical relations of the model into separate classes, namely Turbine and Blade classes. This separations helps isolate essential business logic of the process, which helps with maintenance of the application and makes it more reusable and less dependant on both User Interface side and 3D graphical component (KernelCAD software).

Roles of classes:

CTubnineDlg - implements the GUI layer. CTubnineDlg does not know anything about the geometry of the model. It just displays parameters, takes their new values and passes it to the Geometry layer. This work is done in CTurbineDlg::UpdateModel() method. It also takes display parameters from the geometrical layer and updates the dialog. This is done by CTurbineDlg::UpdatePage().

Turbine class. The highest level class in the geometrical layer is Turbine class. It keeps most important parameters of the geometry, which are familiar and useful to the End User . It also knows how to converts these parameters into calls to KernelCAD software interfaces. Another role of the geometry layer is to validate and handle invalid user input.

Blade class handles jobs related to a particular part of the model. This separation and delegation of roles employs benefits of Object Oriented approach, which is especially important in case of complicated processes and geometries.

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