patch [#36653] Tiny patch that extends import_ply.py to read edges (and allow for 3D curves import)

from Thomas Schiex (treepleks)

io_mesh_ply/import_ply.py

@@ -245,6 +245,8 @@ def load_ply_mesh(filepath, ply_name):
             findex = el.index(b'vertex_indices')
         elif el.name == b'tristrips':
             trindex = el.index(b'vertex_indices')
+        elif el.name == b'edge':
+            eindex1, eindex2 = el.index(b'vertex1'), el.index(b'vertex2')
 
     mesh_faces = []
     mesh_uvs = []
@@ -301,6 +303,10 @@ def load_ply_mesh(filepath, ply_name):
 
     mesh.vertices.foreach_set("co", [a for v in obj[b'vertex'] for a in (v[vindices_x], v[vindices_y], v[vindices_z])])
 
+    if b'edge' in obj:
+        mesh.edges.add(len(obj[b'edge']))
+        mesh.edges.foreach_set("vertices", [a for e in obj[b'edge'] for a in (e[eindex1], e[eindex2])])
+
     if mesh_faces:
         mesh.tessfaces.add(len(mesh_faces))
         mesh.tessfaces.foreach_set("vertices_raw", unpack_face_list(mesh_faces))