From 0b8d4537252bc2d784e4ed79fe7bb911af79d262 Mon Sep 17 00:00:00 2001
From: Prithwish Mukherjee <prithwish.mukherjee@ansys.com>
Date: Tue, 10 Dec 2024 17:55:17 +0530
Subject: [PATCH] doc: Add example for meshing mode.

---
 examples/00-postprocessing/meshing_session.py | 127 ++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 examples/00-postprocessing/meshing_session.py

diff --git a/examples/00-postprocessing/meshing_session.py b/examples/00-postprocessing/meshing_session.py
new file mode 100644
index 00000000..1b4122a2
--- /dev/null
+++ b/examples/00-postprocessing/meshing_session.py
@@ -0,0 +1,127 @@
+""".. _ref_meshing_session:
+
+Postprocessing mesh
+-------------------
+This example uses PyVista and Matplotlib to demonstrate PyFluent
+postprocessing capabilities. The 3D model in this example
+is a mixing elbow that is being meshed, and you can plot it real time.
+
+"""
+
+from ansys.fluent.visualization import set_config
+
+set_config(blocking=False, set_view_on_display="isometric")
+
+import ansys.fluent.core as pyfluent
+from ansys.fluent.core import examples
+
+from ansys.fluent.visualization.graphics.graphics_windows_manager import (
+    FieldDataType,
+    graphics_windows_manager,
+)
+from ansys.fluent.visualization.pyvista import Graphics
+
+meshing = pyfluent.launch_fluent(mode="meshing", ui_mode="gui")
+session_id = meshing._fluent_connection._id
+graphics = Graphics(session=meshing)
+mesh = graphics.Meshes["mesh-1"]
+
+active_window = None
+active_window_id = None
+
+import_file_name = examples.download_file("mixing_elbow.pmdb", "pyfluent/mixing_elbow")
+
+
+def open_window(window_id):
+    global active_window, active_window_id
+    active_window_id = window_id
+    graphics_windows_manager.open_window(window_id)
+    active_window = graphics_windows_manager.get_window(window_id)
+    active_window.post_object = mesh
+    active_window.overlay = True
+
+
+mesh_data = {}
+overlay = True
+
+
+def plot_mesh(index, field_name, data):
+    raise RuntimeError("*****")
+    global mesh_data, active_window, overlay
+    if active_window is None:
+        return
+    if data is not None:
+        if index in mesh_data:
+            mesh_data[index].update({field_name: data})
+        else:
+            mesh_data[index] = {field_name: data}
+        if "vertices" in mesh_data[index] and "faces" in mesh_data[index]:
+            active_window.set_data(FieldDataType.Meshes, mesh_data)
+            graphics_windows_manager.refresh_windows(
+                session_id, [active_window_id], overlay=overlay
+            )
+            mesh_data = {}
+            overlay = True
+    else:
+        overlay = False
+
+
+meshing.fields.field_data_streaming.register_callback(plot_mesh)
+meshing.fields.field_data_streaming.start(provideBytesStream=True, chunkSize=1024)
+
+open_window("w0")
+
+###
+mesh.show_edges = False
+meshing.workflow.InitializeWorkflow(WorkflowType="Watertight Geometry")
+
+meshing.workflow.TaskObject["Import Geometry"].Arguments = {
+    "FileName": import_file_name,
+    "LengthUnit": "in",
+}
+meshing.workflow.TaskObject["Import Geometry"].Execute()
+
+mesh.show_edges = True
+meshing.workflow.TaskObject["Add Local Sizing"].AddChildToTask()
+meshing.workflow.TaskObject["Add Local Sizing"].Execute()
+
+####
+meshing.workflow.TaskObject["Generate the Surface Mesh"].Arguments = {
+    "CFDSurfaceMeshControls": {"MaxSize": 0.1}
+}
+meshing.workflow.TaskObject["Generate the Surface Mesh"].Execute()
+
+meshing.workflow.TaskObject["Describe Geometry"].UpdateChildTasks(
+    SetupTypeChanged=False
+)
+meshing.workflow.TaskObject["Describe Geometry"].Arguments = {
+    "SetupType": "The geometry consists of only fluid regions with no voids"
+}
+meshing.workflow.TaskObject["Describe Geometry"].UpdateChildTasks(SetupTypeChanged=True)
+meshing.workflow.TaskObject["Describe Geometry"].Execute()
+meshing.workflow.TaskObject["Update Boundaries"].Arguments = {
+    "BoundaryLabelList": ["wall-inlet"],
+    "BoundaryLabelTypeList": ["wall"],
+    "OldBoundaryLabelList": ["wall-inlet"],
+    "OldBoundaryLabelTypeList": ["velocity-inlet"],
+}
+meshing.workflow.TaskObject["Update Boundaries"].Execute()
+
+###
+meshing.workflow.TaskObject["Update Regions"].Execute()
+
+meshing.workflow.TaskObject["Add Boundary Layers"].AddChildToTask()
+meshing.workflow.TaskObject["Add Boundary Layers"].InsertCompoundChildTask()
+meshing.workflow.TaskObject["smooth-transition_1"].Arguments = {
+    "BLControlName": "smooth-transition_1",
+}
+meshing.workflow.TaskObject["Add Boundary Layers"].Arguments = {}
+meshing.workflow.TaskObject["smooth-transition_1"].Execute()
+
+meshing.workflow.TaskObject["Generate the Volume Mesh"].Arguments = {
+    "VolumeFill": "poly-hexcore",
+    "VolumeFillControls": {
+        "HexMaxCellLength": 0.3,
+    },
+}
+meshing.workflow.TaskObject["Generate the Volume Mesh"].Execute()