Fix coordinate system example retro-compatibility (#1747)

* Fix coordinate system example retro-compatibility

* Add a proper test

Signed-off-by: paul.profizi <[email protected]>

* Fix code style

Signed-off-by: paul.profizi <[email protected]>

* Make the test retro-compatible

Signed-off-by: paul.profizi <[email protected]>

* Make the test retro-compatible

Signed-off-by: paul.profizi <[email protected]>

* Make the test retro-compatible

Signed-off-by: paul.profizi <[email protected]>

---------

Signed-off-by: paul.profizi <[email protected]>

Author: PProfizi

examples/10-mesh_operations/13-nodes_in_local_coordinate_system.py

@@ -55,8 +55,14 @@
 ###############################################################################
 # Get the rotation matrix of the LCS ID 12.
 # The first 9 values in the ``cs`` output is the rotation matrix.
-cs = dpf.operators.result.coordinate_system()
-cs.inputs.data_sources.connect(model)
+try:
+    # Starting with DPF 2025.1.pre1
+    cs = dpf.operators.result.coordinate_system()
+    cs.inputs.data_sources.connect(model)
+except KeyError:
+    # For previous DPF versions
+    cs = model.operator(r"mapdl::rst::CS")
+
 cs.inputs.cs_id.connect(12)
 cs_rot_mat = cs.outputs.field.get_data().data.T[0:9]
 

tests/operators/test_coordinate_system.py

@@ -0,0 +1,59 @@
+# Copyright (C) 2020 - 2024 ANSYS, Inc. and/or its affiliates.
+# SPDX-License-Identifier: MIT
+#
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+# Tests the result.coordinate_system operator
+import ansys.dpf.core as dpf
+from ansys.dpf.core import examples
+import conftest
+import numpy as np
+
+
+def test_operator_coordinate_system_rst(server_type):
+    model = dpf.Model(examples.download_hemisphere(server=server_type), server=server_type)
+    if conftest.SERVERS_VERSION_GREATER_THAN_OR_EQUAL_TO_9_1:
+        # Starting with DPF 2025.1.pre1
+        cs = dpf.operators.result.coordinate_system(server=server_type)
+        cs.inputs.data_sources.connect(model)
+    else:
+        # For previous DPF versions
+        cs = model.operator(r"mapdl::rst::CS")
+    cs.inputs.cs_id.connect(12)
+    cs_rot_mat = cs.outputs.field().data
+    ref = np.array(
+        [
+            [
+                -0.18966565,
+                0.91517569,
+                0.35564083,
+                -0.91517569,
+                -0.03358143,
+                -0.40165376,
+                -0.35564083,
+                -0.40165376,
+                0.84391579,
+                4.74164122,
+                22.87939222,
+                8.89102077,
+            ]
+        ]
+    )
+    assert np.allclose(cs_rot_mat.data, ref)