0027191: Documentation - redesign of information architecture -- revision (overview and samples)

Revision of Introduction, Overview, Samples, Tutorial

- Technical Overview is incorporated into Introduction
- Samples (from Overview) and Tutorial are moved into new section Tutorials and Samples
- Content of Getting Started section (Draw Test Harness and Experimenting with Draw Test Harness) is moved into Tutorial and Samples section.
- Content changes: links to Open Cascade website promoting paid training and support are deleted.
- Some pictures in User Guides (Foundation Classes, Modeling Data, Modeling Algorithms) and Tutorial are updated to improve quality and correct mistakes.

dox/samples/samples.md

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+Tutorials and Samples {#samples}
+=====================
+
+Tutorial: Modelling a Bottle
+----------------------------
+The Qt programming tutorial teaches how to use Open CASCADE Technology services to model a 3D object. 
+The purpose of the tutorial is not to explain all OCCT classes but 
+to help start thinking in terms of the Open CASCADE Technology.
+
+This tutorial assumes that  the user has experience in using and setting up C++. 
+From the viewpoint of programming, Open CASCADE Technology is designed 
+to enhance user's C++ tools with high performance modeling classes, methods and functions. 
+The combination of these resources allows creating substantial applications.
+
+Read more about @subpage occt__tutorial
+
+MFC
+---------
+
+Visual C++ programming samples containing 10 Visual C++ projects 
+illustrating how to use a particular module or functionality.
+
+The list of MFC samples:
+
+  * Geometry
+  * Modeling
+  * Viewer2d
+  * Viewer3d
+  * ImportExport
+  * Ocaf
+  * Triangulation
+  * HLR
+  * Animation
+  * Convert
+
+@figure{/samples/images/samples_mvc.png}
+
+**Remarks:**
+
+  * MFC samples are available only on Windows platform;
+  * To start a sample use Open CASCADE Technology\\Samples\\Mfc\\ item of the Start\\Programs menu;
+  * Read carefully readme.txt to learn about launching and compilation options.
+
+See @subpage samples_mfc_standard "Readme" for details.
+
+Qt
+---
+
+ OCCT contains three samples based on Qt application framework
+
+ Import Export
+-------------
+
+ Import Export programming sample contains 3D Viewer and Import / Export functionality.
+
+@figure{/samples/images/samples_qt.png}
+
+ Tutorial
+---------
+
+The Qt programming tutorial teaches how to use Open CASCADE Technology services to model a 3D object. 
+The purpose of the tutorial is not to explain all OCCT classes but 
+to help start thinking in terms of the Open CASCADE Technology.
+
+This tutorial assumes that  the user has experience in using and setting up C++. 
+From the viewpoint of programming, Open CASCADE Technology is designed 
+to enhance user's C++ tools with high performance modeling classes, methods and functions. 
+The combination of these resources allows creating substantial applications.
+
+**See also:** @ref occt__tutorial "OCCT Tutorial"
+
+C#
+---
+
+C# sample demonstrates integration of OCCT 3D Viewer and Import / Export functionality into .NET applications (using Windows Forms and WPF front ends).
+
+@figure{/samples/images/samples_c__ie.png}
+
+Import:
+
+  * BRep
+  * Iges
+  * Step
+
+Export: 
+
+  * Brep
+  * Iges
+  * Step
+  * Stl
+  * Vrml
+
+See @subpage samples_csharp_occt "C# sample Readme" for details.
+
+There is also another C# example with the same functionality, which demonstrates the integration of Direct3D Viewer into .NET applications using WPF front end.
+
+See @subpage samples_csharp_direct3d "Direct3D C# sample Readme" for details.
+
+Android
+---------
+
+There are two samples are representing usage OCCT framework on Android mobile platform. They represent an OCCT-based 3D-viewer with CAD import support in formats BREP, STEP and IGES: jniviewer (java) and AndroidQt (qt+qml)
+
+jniviewer
+@figure{/samples/images/samples_java_android_occt.jpg}
+Java -- See @subpage samples_java_android_occt "Android Java sample Readme" for details.
+
+AndroidQt
+@figure{/samples/images/samples_qml_android_occt.jpg}
+Qt -- See \subpage samples_qml_android_occt "Android Qt sample Readme" for details.
+
+iOS
+---
+
+There is a sample demonstrating usage of OCCT on iOS with Apple UIKit framework.
+
+@figure{/samples/images/sample_ios_uikit.png}
+
+See @subpage occt_samples_ios_uikit "iOS sample Readme" for details.
+
+Web
+---------
+
+WebGL Viewer sample demonstrating usage of OCCT 3D Viewer in Web browser with Emscripten SDK can be found in `samples/webgl`.
+
+@figure{/samples/images/sample_webgl.png}
+
+See @subpage occt_samples_webgl "WebGL sample Readme" for details.
+
+OCAF Usage Sample
+------------------
+
+The provided set of samples dedicates to get initial knowledge about typical actions with OCAF services.  It may be 
+useful for newcomers.
+
+Read more about @subpage samples__ocaf
+
+OCAF Function Mechanism Usage
+-----------------------------
+
+This simple example dedicates to the usage of "Function Mechanism" of OCCT Application Framework. It represents a "nail" 
+composed by a cone and two cylinders of different radius and height.
+ 
+Read more about @subpage samples__ocaf_func
+
+Draw Demo Scripts
+------------------
+
+A set of demo scripts demonsrates using OCCT functionality from DRAW. These scripts can be also considered as a 
+tutorials on tcl usage within Draw.
+
+Read more about @subpage samples__draw_scripts