add bounding box computations for meshes

Author: domrice

AUTHORS.md

@@ -42,3 +42,4 @@
 - Joseph Kenny <<kenny@arch.ethz.ch>> [@jckenny59](https://github.com/jckenny59)
 - Panayiotis Papacharalambous <<papacharalambous@arch.ethz.ch>> [@papachap](https://github.com/papachap)
 - Oliver Bucklin <<obucklin@arch.ethz.ch>> [@obucklin](https://github.com/obucklin)
+- Dominik Reisach <<reisach@arch.ethz.ch>> [@dominikreisach](https://github.com/dominikreisach)

CHANGELOG.md

@@ -8,6 +8,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## Unreleased
 
 ### Added
+* Implemented `to_points` method in `compas.datastructures.Mesh`, which before raised a `NotImplementedError`.
+* Implemented `compute_aabb` method in `compas.datastructures.Datastructure`, which before raised a `NotImplementedError`. Made use of the `compas.geometry.bbox.bounding_box` function.
+* Implemented `compute_obb` method in `compas.datastructures.Datastructure`, which before raised a `NotImplementedError`. Made use of the `compas.geometry.bbox_numpy.oriented_bounding_box_numpy` function.
 
 ### Changed
 

src/compas/datastructures/datastructure.py

@@ -86,7 +86,10 @@ def compute_aabb(self):
         :class:`compas.geometry.Box`
 
         """
-        raise NotImplementedError
+        from compas.geometry import Box
+        from compas.geometry.bbox import bounding_box
+
+        return Box.from_bounding_box(bounding_box(self.to_points()))
 
     def compute_obb(self):
         """Compute the oriented bounding box of the datastructure.
@@ -96,7 +99,10 @@ def compute_obb(self):
         :class:`compas.geometry.Box`
 
         """
-        raise NotImplementedError
+        from compas.geometry import Box
+        from compas.geometry.bbox_numpy import oriented_bounding_box_numpy
+
+        return Box.from_bounding_box(oriented_bounding_box_numpy(self.to_points()))
 
     def transform(self, transformation):
         """Transforms the data structure.

src/compas/datastructures/mesh/mesh.py

@@ -725,7 +725,7 @@ def to_points(self):
             The points representing the vertices of the mesh.
 
         """
-        raise NotImplementedError
+        return [self.vertex_coordinates(vertex) for vertex in self.vertices()]
 
     def to_polygons(self):
         """Convert the mesh to a collection of polygons.