New spatial features

src/lineagetree/_mixins/spatial_mixin.py

@@ -5,6 +5,19 @@
     gabriel_graph,
     idx3d,
     neighbours_in_radius,
+    angles,
+    asphericity,
+    displacement,
+    displacement_ratio,
+    duration,
+    max_displacement,
+    mean_squared_displacement,
+    outreach_ratio,
+    overall_angle,
+    speed,
+    straightness,
+    track_length,
+    velocity,
 )
 
 from ._methodize import AutoMethodizeMeta
@@ -19,3 +32,28 @@ class SpatialMixin(metaclass=AutoMethodizeMeta):
     spatial_edges = spatial_edges
     spatial_density = spatial_density
     neighbours_in_radius = neighbours_in_radius
+    angles = angles
+
+    asphericity = asphericity
+
+    displacement = displacement
+
+    displacement_ratio = displacement_ratio
+
+    duration = duration
+
+    max_displacement = max_displacement
+
+    mean_squared_displacement = mean_squared_displacement
+
+    outreach_ratio = outreach_ratio
+
+    overall_angle = overall_angle
+
+    speed = speed
+
+    straightness = straightness
+
+    track_length = track_length
+
+    velocity = velocity

src/lineagetree/approximation/approximations.py

@@ -0,0 +1,36 @@
+from __future__ import annotations
+
+from abc import ABC
+from typing import TYPE_CHECKING
+
+
+
+if TYPE_CHECKING:
+    from ..lineage_tree import LineageTree
+
+
+class TreeApproximator(ABC):
+
+    def build_approximated_tree(self):
+        """This functionm will create the nod list and the adjacency_list"""
+
+    def get_norm(self):
+        """Return the distance of the approximated tree to the null tree."""
+
+    def __init__(
+        self,
+        lT: LineageTree,
+        starting_node: int,
+        ending_timepoint: int | None = None,
+    ) -> None:
+        """_summary_
+
+        Parameters
+        ----------
+        lT : LineageTree
+            _description_
+        starting_node : int
+            _description_
+        ending_timepoint : int | None, optional
+            _description_, by default None
+        """