Improve GLB lines and points support

src/ansys/pyensight/core/utils/omniverse.py

@@ -190,6 +190,7 @@ def create_connection(
         live: bool = True,
         debug_filename: str = "",
         time_scale: float = 1.0,
+        line_width: float = 0.0,
         options: dict = {},
     ) -> None:
         """Ensure that an EnSight dsg -> omniverse server is running
@@ -224,6 +225,9 @@ def create_connection(
             If the name of a file is provided, it will be used to save logging information on
             the connection between EnSight and Omniverse.  This option is no longer supported,
             but the API remains for backwards compatibility.
+        line_width : float
+            If set, line objects will be represented as "tubes" of the size specified by
+            this factor.  The default is 0.0 and causes lines not to be exported.
         options : dict
             Allows for a fallback for the grpc host/port and the security token.
         """
@@ -259,6 +263,8 @@ def create_connection(
             cmd.extend(["--normalize_geometry", "true"])
         if time_scale != 1.0:
             cmd.extend(["--time_scale", str(time_scale)])
+        if line_width != 0.0:
+            cmd.extend(["--line_width", str(line_width)])
         if not live:
             cmd.extend(["--oneshot", "1"])
         cmd.extend(["--dsg_uri", dsg_uri])
@@ -336,7 +342,7 @@ def close_connection(self) -> None:
         self._server_pid = None
         self._new_status_file(new=False)
 
-    def update(self, temporal: bool = False) -> None:
+    def update(self, temporal: bool = False, line_width: float = 0.0) -> None:
         """Update the geometry in Omniverse
 
         Export the current EnSight scene to the current Omniverse connection.
@@ -345,10 +351,20 @@ def update(self, temporal: bool = False) -> None:
         ----------
         temporal : bool
             If True, export all timesteps.
+        line_width : float
+            If set to a non-zero value, lines will be exported with this thickness.
+            This feature is only available in 2025 R2 and later.
         """
         update_cmd = "dynamicscenegraph://localhost/client/update"
+        prefix = "?"
         if temporal:
-            update_cmd += "?timesteps=1"
+            update_cmd += f"{prefix}timesteps=1"
+            prefix = "&"
+        if line_width != 0.0:
+            # only in 2025 R2 and beyond
+            if self._ensight._session.ensight_version_check("2025 R2", exception=False):
+                update_cmd += f"{prefix}line_width={line_width}"
+                prefix = "&"
         self._check_modules()
         if not self.is_running_omniverse():
             raise RuntimeError("No Omniverse server connection is currently active.")

src/ansys/pyensight/core/utils/omniverse_glb_server.py

@@ -148,10 +148,17 @@ def _parse_mesh(self, meshid: int, parentid: int, parentname: str) -> None:
                 continue
             glb_materialid = prim.material
 
+            line_width = self._callback_handler._omni.line_width
+            # TODO: override from scene extension: ANSYS_linewidth
+
             # GLB Prim -> DSG Part
             part_name = f"{parentname}_prim{prim_idx}_"
             cmd, part_pb = self._create_pb("PART", parent_id=parentid, name=part_name)
-            part_pb.render = dynamic_scene_graph_pb2.UpdatePart.RenderingMode.CONNECTIVITY
+            if mode == pygltflib.POINTS:
+                part_pb.render = dynamic_scene_graph_pb2.UpdatePart.RenderingMode.NODES
+                part_pb.node_size_default = line_width
+            else:
+                part_pb.render = dynamic_scene_graph_pb2.UpdatePart.RenderingMode.CONNECTIVITY
             part_pb.shading = dynamic_scene_graph_pb2.UpdatePart.ShadingMode.NODAL
             self._map_material(glb_materialid, part_pb)
             part_dsg_id = part_pb.id
@@ -208,6 +215,7 @@ def _parse_mesh(self, meshid: int, parentid: int, parentname: str) -> None:
                 normals_pb.total_array_size = len(normals)
                 self._handle_update_command(cmd)
 
+            # Texture coords
             if prim.attributes.TEXCOORD_0 is not None:
                 # Note: texture coords are stored as VEC2, so we get 2 components back
                 texcoords = self._get_data(prim.attributes.TEXCOORD_0, components=2)