The point inclusion tests for polygons, in other words the point in polygon (PIP) algorithms  are fundamental tools for many scientific fields related to computational geometry  and they have been studied for a long time.
<fluency> The point inclusion tests for polygons, in other words the point in polygon (PIP) algorithms  are fundamental tools for many scientific fields related to computational geometry  and they have been studied for a long time.
The point inclusion tests for polygons, in other words the point-in-polygon (PIP) algorithms are fundamental tools for many scientific fields related to computational geometry and they have been studied for a long time.