add form mesh constructor for form diagram

CHANGELOG.md

@@ -9,11 +9,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+* Added `compas_tna.diagrams.FormDiagram.from_mesh`.
+
 ### Changed
 
 ### Removed
 
-
 ## [0.4.0] 2024-03-01
 
 ### Added
@@ -22,7 +23,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Removed
 
-
 ## [0.3.0] 2024-02-09
 
 ### Added
@@ -31,7 +31,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Removed
 
-
 ## [0.2.0] 2022-12-02
 
 ### Added

src/compas_tna/diagrams/formdiagram.py

@@ -149,6 +149,22 @@ def from_lines(cls, lines, delete_boundary_face=True, precision=None, **kwargs):
             form.name = kwargs["name"]
         return form
 
+    @classmethod
+    def from_mesh(cls, mesh):
+        """Construct a Form Diagram from another mesh.
+
+        Parameters
+        ----------
+        mesh : :class:`compas.datastructures.Mesh`
+            The other mesh.
+
+        Returns
+        -------
+        :class:`compas_tna.diagrams.FormDiagram`
+
+        """
+        return mesh.copy(cls=cls)
+
     def uv_index(self):
         """Returns a dictionary that maps edge keys (i.e. pairs of vertex keys)
         to the corresponding edge index in a list or array of edges.