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# sight::viz::scene2d
Contains the generic classes for the 2D scene display elements.
The generic element cover background size, position, viewports, scenes and mouse interactions.
## Classes
* **adaptor**: root class for the 2D scene adaptors. Needs to be extended to get the sight::viz::scene2D elements.
* **graphics_view**: contains the view dedicated element: viewport, as well as all the mouse interaction methods.
* **render**: renders the QT scene.
### Data
* **Axis**: defines an axis on the scene2D.
* **Coord**: defines a point on the scene2D.
* **Event**: manages the events on the scene2D.
* **InitQPen**: initialise the color of a QPen on the scene2D.
* **Size**: defines a 2D size data structure for scene2D elements.
* **Viewport**: defines a 2D viewport with its position and size for scene2D elements.
### Registry
* **adaptor**: Handles a map containing adaptor-render association for the sight registry.
## How to use it
### CMake
```cmake
add_dependencies(my_target viz_scene2d ... )
```
### Implementation
Define your specific scene2D class as an extension of the adaptor class.
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