Alignment api update (#6817)

* Some basic COGO survey points functions

* Update alignment api

Includes defining alignment segment by segment, automatic geometry definitions, and automatric stationing and referents

* Fixes bonsai import alignment from csv

* Adds DMS angle conversion functions to COGO api

* Updated per @civilx64 review comments

* Fixes problem with segment representations

* Fixes problem with segment transition codes

* Allows for compound vertical and horizontal curves

* Implements callbacks for referent naming

* Renames angle_from_bearing to bearing2dd for consistency with ifcopenshell.util.geolocation.dms2dd. Removes angle_from_dms because it duplicates dms2dd

* Documents register_referent_name_callback

* Fixes all sorts of problems with Cant/SegRefCurve implementation

* refactor referent unit tests to use a fixture for test setup

* lint with black

---------

Co-authored-by: Scott Lecher <civilx64@gmail.com>

src/ifcopenshell-python/ifcopenshell/api/alignment/create_layout_segment.py

@@ -0,0 +1,85 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2025 Thomas Krijnen <thomas@aecgeeks.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import ifcopenshell
+import ifcopenshell.api.alignment
+import ifcopenshell.api.alignment.get_alignment
+import ifcopenshell.geom
+from ifcopenshell import entity_instance
+import math
+from ifcopenshell import ifcopenshell_wrapper
+import numpy as np
+
+from ifcopenshell.api.alignment._add_segment_to_layout import _add_segment_to_layout
+
+
+def create_layout_segment(
+    file: ifcopenshell.file, layout: entity_instance, design_parameters: entity_instance
+) -> np.array:
+    """
+    Creates a new IfcAlignmentSegment using the IfcAlignmentParameterSegment design parameters.
+    The new segment is appended to the layout alignment and the corresponding IfcCurveSegment is created in the geometric representation
+
+    :param layout: The layout to receive the new layout segment. This parameter is expected to be IfcAlignmentHorizontal, IfcAlignmentVertical or IfcAlignmentCant
+    :param design_parameters: The parameters defining the segment. Expected to be the appropreate subclass of IfcAlignmentParameterSegment
+    :return: 4x4 matrix at end of segment as np.array intended to be used as the start point geometry for the next segment.
+    """
+    expected_types = ["IfcAlignmentHorizontal", "IfcAlignmentVertical", "IfcAlignmentCant"]
+    if not layout.is_a() in expected_types:
+        raise TypeError(
+            f"Expected entity type to be one of {[_ for _ in expected_types]}, instead received {layout.is_a()}"
+        )
+
+    if layout.is_a("IfcAlignmentHorizontal") and not design_parameters.is_a("IfcAlignmentHorizontalSegment"):
+        raise TypeError("Expected design_parameters to be IfcAlignmentHorizontalSegment")
+    elif layout.is_a("IfcAlignmentVertical") and not design_parameters.is_a("IfcAlignmentVerticalSegment"):
+        raise TypeError("Expected design_parameters to be IfcAlignmentVerticalSegment")
+    elif layout.is_a("IfcAlignmentCant") and not design_parameters.is_a("IfcAlignmentCantSegment"):
+        raise TypeError("Expected design_parameters to be IfcAlignmentCantSegment")
+
+    # create the segment and add it to the layout.
+    segment = file.createIfcAlignmentSegment(GlobalId=ifcopenshell.guid.new(), DesignParameters=design_parameters)
+    _add_segment_to_layout(file, layout, segment)  # adds to layout and geometric representation
+
+    # compute the 4x4 matrix at the end of the segment so this information can be
+    # returned and used when defining the next segment
+    alignment = ifcopenshell.api.alignment.get_alignment(layout)
+    curve = ifcopenshell.api.alignment.get_curve(alignment)
+
+    if layout.is_a("IfcAlignmentHorizontal"):
+        if curve.is_a("IfcGradientCurve"):
+            curve = curve.BaseCurve
+        elif curve.is_a("IfcSegmentedReferenceCurve"):
+            curve = (
+                curve.BaseCurve.BaseCurve
+            )  # layout is horizontal and curve is segmented ref ... we want the curve's base curve
+    elif layout.is_a("IfcAlignmentVertical"):
+        if curve.is_a("IfcSegmentedReferenceCurve"):
+            curve = curve.BaseCurve
+
+    # the new segment is two from the end... the end segment is zero length
+    curve_segment = curve.Segments[-2]
+
+    settings = ifcopenshell.geom.settings()
+
+    segment_fn = ifcopenshell_wrapper.map_shape(settings, curve_segment.wrapped_data)
+    segment_evaluator = ifcopenshell_wrapper.function_item_evaluator(settings, segment_fn)
+    e = segment_evaluator.evaluate(segment_fn.end())
+    end = np.array(e)
+
+    return end