Draft: Resolve "Automatize exportation of 3D plots"

Closes #49

To do

• Add SelectTreeItem method to Project class
• Implement Plot class (not all methods provided by CST)
• Implement ScalarPlot3D class
• Implement exportImageToFile method.

Method for exporting the image

CST provides several options for this. Specialized objects of the COM interface like Plot allow to export the image that they create. However, I have decided to use the ExportImageToFile() method of the Project object, since it seemed more general purpose. A priori this methods allows to export anything displayed on the screen.

Plot class

At the moment, not all the possible methods of this class will be implemented, since there are many possibilities and only few of them are currently needed. The only one to be implemented are:

• RestoreView()
• ZoomToStructure
• ResetZoom
• DrawBox(): To be called DrawBoundingBox()
• DrawWorkPlane()
• WireFrame()
• ShowTextBox()