manual/modeling/geometry_nodes/mesh/topology/corners_of_edge.rst

@@ -0,0 +1,65 @@
+.. index:: Geometry Nodes; Corners of Edge
+.. _bpy.types.GeometryNodeCornersOfEdge:
+
+********************
+Corners of Edge Node
+********************
+
+.. figure:: /images/node-types_GeometryNodeCornersOfEdge.webp
+   :align: right
+   :alt: Corners of Edge node.
+
+The *Corners of Edge* node retrieves face corners connected to each edge in a mesh.
+The node first gathers a list of face corners which are connected to the edges.
+It's important to note that the list only has one corner per face.
+Using the :doc:`/modeling/geometry_nodes/mesh/topology/offset_corner_in_face`
+to offset the index inside the face by 1 gives the other corner from the face that is connected to the edge.
+That list is then sorted based on the values of the *Sort Weight* input.
+The *Total* output is the number of connected faces/corners, and the *Corner Index*
+output is one of those corners, chosen using the *Sort Index* input.
+
+.. figure:: /images/modeling_geometry-nodes_corners-of-edge_explanation.png
+   :align: center
+   :width: 400px
+
+   A graphic for which corners are returned for a given edge
+
+* Red: selected edge
+* Blue: corners that get individually returned, depending on the sorting
+* Purple: corners that can be retrieved by offseting the blue corner indices using :doc:`/modeling/geometry_nodes/mesh/topology/offset_corner_in_face`
+
+Inputs
+======
+
+Edge Index
+   The index of the input edge.
+
+   .. note::
+      By default this uses the :doc:`index </modeling/geometry_nodes/geometry/read/input_index>`
+      from the field context, which makes it important that the node is evaluated on
+      the edge domain.
+
+Weights
+   Values used to sort the corners connected to the edge.
+   By default the corners are sorted by index, so the corners with the smallest indices come first.
+
+Sort Index
+   Which of the sorted corners to use for the *Corner Index* output. If the value is larger than
+   the total number of connected face corners, it will wrap around to the beginning.
+
+
+Properties
+==========
+
+This node has no properties.
+
+
+Outputs
+=======
+
+Corner Index
+   A corner of the input edge in its face's winding order, chosen by the *Sort Index* input.
+
+Total
+   The number of faces or face corners connected to the edge.
+

manual/modeling/geometry_nodes/mesh/topology/index.rst

@@ -8,6 +8,7 @@ Nodes that retrieve information about the connectivity between mesh elements.
 .. toctree::
    :maxdepth: 1
 
+   corners_of_edge.rst
    corners_of_face.rst
    corners_of_vertex.rst
    edges_of_corner.rst