key is back, back again

CHANGELOG.md

@@ -14,6 +14,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Added attribute `plates` to `TimberModel`.
 * Added `SurfaceModelJointOverride` GH Component
 * Added `ShowSurfaceModelBeamType` GH Component
+* Re-introduced attribute `key` in `Beam`.
+* Added attribute `key` to `Plate`.
 
 ### Changed
 

src/compas_timber/elements/beam.py

@@ -79,6 +79,8 @@ class Beam(Element):
         A list containing the 4 lines along the long axis of this beam.
     midpoint : :class:`~compas.geometry.Point`
         The point at the middle of the centerline of this beam.
+    key : int, optional
+        Once beam is added to a model, it will have this model-wide-unique integer key.
 
     """
 
@@ -236,9 +238,14 @@ def midpoint(self):
 
     @property
     def has_features(self):
-        # TODO: move to compas_future... Part
+        # TODO: consider removing, this is not used anywhere
         return len(self.features) > 0
 
+    @property
+    def key(self):
+        # type: () -> int | None
+        return self.graph_node
+
     def __str__(self):
         return "Beam {:.3f} x {:.3f} x {:.3f} at {}".format(
             self.width,

src/compas_timber/elements/plate.py

@@ -37,7 +37,8 @@ class Plate(Element):
         Thickness of the plate material.
     aabb : tuple(float, float, float, float, float, float)
         An axis-aligned bounding box of this plate as a 6 valued tuple of (xmin, ymin, zmin, xmax, ymax, zmax).
-
+    key : int, optional
+        Once plate is added to a model, it will have this model-wide-unique integer key.
 
     """
 
@@ -91,9 +92,14 @@ def shape(self):
 
     @property
     def has_features(self):
-        # TODO: move to compas_future... Part
+        # TODO: consider removing, this is not used anywhere
         return len(self.features) > 0
 
+    @property
+    def key(self):
+        # type: () -> int | None
+        return self.graph_node
+
     # ==========================================================================
     # Implementations of abstract methods
     # ==========================================================================