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----
-title: AOI matching
----
-
-AOI matching
-============
-
-Once [AOI3DScene](../../argaze.md/#argaze.AreaOfInterest.AOI3DScene) is projected as [AOI2DScene](../../argaze.md/#argaze.AreaOfInterest.AOI2DScene), it could be needed to know which AOI is looked.
-
-The [AreaOfInterest](../../argaze.md/#argaze.AreaOfInterest.AOIFeatures.AreaOfInterest) class in [AOIFeatures](../../argaze.md/#argaze.AreaOfInterest.AOIFeatures) provides two ways to accomplish such task.
-
-## Pointer-based matching
-
-Test if 2D pointer is inside or not AOI using contains_point() method as illustrated below.
-
-![Contains point](../../img/contains_point.png)
-
-``` python
-pointer = (x, y)
-
-for name, aoi in aoi2D_scene.items():
-
- if aoi.contains_point(pointer):
-
- # Do something with looked aoi
- ...
-
-```
-
-It is also possible to get where a pointer is looking inside an AOI provided that AOI is a rectangular plane:
-
-``` python
-
-inner_x, inner_y = aoi.inner_axis(pointer)
-
-```
-
-## Circle-based matching
-
-As positions have limited accuracy, it is possible to define a radius around a pointer to test circle intersection with AOI.
-
-![Circle intersection](../../img/circle_intersection.png)
-
-``` python
-
-intersection_shape, intersection_aoi_ratio, intersection_circle_ratio = aoi.circle_intersection(pointer, radius)
-
-```