Investigating the impact on P of uniform-density reprocessing regions within a fragmented model. A purely uniform-density model is shown with black dots, a clumpy model with a uniform-density dusty torus with red squares, a clumpy model with uniform-density polar winds with orange diamonds and a purely clumpy model with indigo triangles. A dashed line indicates a polarization position angle γ = 90° (parallel), and a solid line stands for γ = 0° (perpendicular). Top figure: AGN modeling with extended tori; bottom: AGN modeling with compact tori.