add test to_point methods and test functions

Author: dominikreisach

src/compas/datastructures/cell_network/cell_network.py

@@ -1171,6 +1171,17 @@ def faces_to_mesh(self, faces, data=False):
                 mesh.add_face(vertices, fkey=fkey)
         return mesh
 
+    def vertices_to_points(self):
+        """Convert the vertices of the cell network to a collection of points.
+
+        Returns
+        -------
+        list[list[float]]
+            The points representing the vertices of the cell network.
+
+        """
+        return [self.vertex_coordinates(vertex) for vertex in self.vertices()]
+
     # --------------------------------------------------------------------------
     # General
     # --------------------------------------------------------------------------

src/compas/datastructures/volmesh/volmesh.py

@@ -559,6 +559,17 @@ def to_vertices_and_cells(self):
             cells.append(faces)
         return vertices, cells
 
+    def to_points(self):
+        """Convert the volmesh to a collection of points.
+
+        Returns
+        -------
+        list[float[float]]
+            The points representing the vertices of the volmesh.
+
+        """
+        return [self.vertex_coordinates(vertex) for vertex in self.vertices()]
+
     def cell_to_mesh(self, cell):
         # type: (int) -> Mesh
         """Construct a mesh object from from a cell of a volmesh.

tests/compas/datastructures/test_cell_network.py

@@ -83,3 +83,14 @@ def test_cell_network_boundary(example_cell_network):
     assert set(ds.faces_without_cell()) == {11}
     assert set(ds.edges_without_face()) == {(15, 13), (14, 12)}
     assert set(ds.nonmanifold_edges()) == {(6, 7), (4, 5), (5, 6), (7, 4)}
+
+
+# ==============================================================================
+# Conversion
+# ==============================================================================
+
+
+def test_vertices_to_points(example_cell_network):
+    ds = example_cell_network
+    points = ds.vertices_to_points()
+    assert len(points) == ds.number_of_vertices()

tests/compas/datastructures/test_graph.py

@@ -276,6 +276,20 @@ def test_graph_to_networkx():
     # assert g2.attributes["val"] == (0, 0, 0), "Graph attributes must be preserved"
 
 
+@pytest.mark.parametrize(
+    "filepath",
+    [
+        compas.get("lines.obj"),
+        compas.get("grid_irregular.obj"),
+    ],
+)
+def test_to_points(filepath):
+    graph = Graph.from_obj(filepath)
+    points = graph.to_points()
+
+    assert len(points) == graph.number_of_nodes(), "Number of points must match number of nodes"
+
+
 # ==============================================================================
 # Methods
 # ==============================================================================

tests/compas/datastructures/test_volmesh.py

@@ -346,6 +346,13 @@ def test_cells_where_predicate():
 # Conversion
 # ==============================================================================
 
+
+def test_to_points():
+    vmesh = VolMesh.from_obj(compas.get("boxes.obj"))
+    points = vmesh.to_points()
+    assert len(points) == 27
+
+
 # ==============================================================================
 # Methods
 # ==============================================================================