Implemented at 3D: panning, zooming, rotation from the toolbar icons.
Improved the 2D displaying window, implemented window zooming, implemented some code at rectangle drawing but some drawing problem remained.
Made also some code improvements, moved functionalities among classes. It remained to make some code cleanup.
From the proposed functionalities remained to finish: make improvements at 2D drawing, finish the 2D rectangle drawing and implement an use case where the 2D rectangle drawn with the sketcher will be taken to 3D and displayed. Also making some documents with the architectural structure would be good.
Still hoping to finish all these on Tuesday.
Uploaded the latest the source codes to SVN.