| ::angle_ll | Calculate the angle between two lines. |
| ::angle_lx | Calculate the angle between one line and the vertical axis. |
| ::distance_lr | Calculate the distance between one line and one region. |
| ::distance_pl | Calculate the distance between one point and one line. |
| ::distance_pp | Calculate the distance between two points. |
| ::distance_pr | Calculate the distance between one point and one region. |
| ::distance_ps | Calculate the distances between a point and a line segment. |
| ::distance_rr_min | Minimum distance between the contour pixels of two regions each. |
| ::distance_rr_min_dil | Minimum distance between two regions with the help of dilatation. |
| ::distance_sl | Calculate the distances between one line segment and one line. |
| ::distance_sr | Calculate the distance between one line segment and one region. |
| ::distance_ss | Calculate the distances between two line segments. |
| ::get_points_ellipse | Points of an ellipse corresponding to specific angles. |
| ::intersection_ll | Calculate the intersection point of two lines. |
| ::projection_pl | Calculate the projection of a point onto a line. |