Qt: OCCT Overview (C++|Qt Widgets)

The Overview Qt application provides code snippets for basic usage of C++ API of various OCCT functionality. The samples are organized in several categories according to relevant module of OCCT:

• Geometry
• Topology
• Triangulation
• DataExchange
• OCAF
• Viewer 2d
• Viewer 3d

Each sample presents geometry view, C++ code fragment and sample output window. This sample is described in the Novice guide for new users.

1. Contents

The directory samples/qt/OCCTOverview contains the folders and files of the Qt OCCT Overview application:

• Files OCCTOverview.pro and OCCTOverview0.pro are Qt project files.
• File genproj.bat to denerate MS Visual Studio project.
• File msvc.bat to run MS Visual Studio project.
• File make.sh to build of the application on Linux.
• Files run.bat and run.sh to run the application.
• Files env.bat and custom.bat are called from genproj.bat, msvc.bat, run.bat. File custom.bat should be defined by user to provide paths to QT directory and OCCT installation directory (see custom.bat.template).
• src and res directories provide source and resources files.

The directory samples/OCCTOverview/code contains the source code of samples.

2. How to build Qt OCCT Overview application

• Edit custom.bat file. It is necessary to define following variables:
  • QTDIR path to where Qt is installed
  • CASROOT path to where Open CASCADE binaries are installed.
• Build the application:
  • On Windows:
    • Generate project files: > genproj.bat vc141 win64 Debug
    • Launch MS Visual Studio: > msvc.bat vc141 win64 Debug
    • Build the application using MS Visual Studio.
  • On Linux: Launch building of the application by make.sh script

3. Running the application

• On Windows:

  > run.bat vc141 win64 Debug

• On Linux:

  > run.sh

4. How to use the OCCT Overview application:

• To select a samples category use the Category menu.
• To run concrete sample using the menu to the right of the category menu.
• See the source code in the Sample code window. Сopy the code if needed.
• See the sample output in the Output window if it exist.
• Zoom, pan and rotate a geometry in the mail window using the mouse.

See hints how to use the mouse in down hints panel.