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Fixed zero length segment for vertical alignment. Refactors curve segment transition code

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This commit is contained in:
Richard Brice
2025-08-14 13:56:36 -07:00
parent 6bc318b15c
commit 1fcf2fb53f
4 changed files with 50 additions and 26 deletions
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src/ifcopenshell-python/ifcopenshell/api/alignment/add_zero_length_segment.py
+21 -5
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@@ -27,6 +27,7 @@ import math
from ifcopenshell.api.alignment._get_segment_start_point_label import _get_segment_start_point_label
from ifcopenshell.api.alignment._map_alignment_horizontal_segment import _map_alignment_horizontal_segment
from ifcopenshell.api.alignment._map_alignment_vertical_segment import _map_alignment_vertical_segment
from ifcopenshell.api.alignment._update_curve_segment_transition_code import _update_curve_segment_transition_code
@@ -157,20 +158,35 @@ def add_zero_length_segment(file: ifcopenshell.file, layout: entity_instance, in
)
elif layout.is_a("IfcAlignmentVertical"):
last_segment_dist_along = 0.0
last_segment_height = 0.0
last_segment_end_gradient = 0.0
last_segment = None
for rel in layout.IsNestedBy:
if 0 < len(rel.RelatedObjects):
last_segment = rel.RelatedObjects[-1]
last_segment_dist_along = (
last_segment.DesignParameters.StartDistAlong + last_segment.DesignParameters.HorizontalLength
)
last_segment_end_gradient = last_segment.DesignParameters.EndGradient
break
if last_segment:
file.begin_transaction()
last_segment_dist_along = (
last_segment.DesignParameters.StartDistAlong + last_segment.DesignParameters.HorizontalLength
)
last_segment_end_gradient = last_segment.DesignParameters.EndGradient
settings = ifcopenshell.geom.settings()
mapped_segments = _map_alignment_vertical_segment(file, last_segment)
geometry_segment = mapped_segments[0] if mapped_segments[1] == None else mapped_segments[1]
fn = wrapper.map_shape(settings, geometry_segment.wrapped_data)
eval = wrapper.function_item_evaluator(settings, fn)
e = np.array(eval.evaluate(fn.end()))
unit_scale = ifcopenshell.util.unit.calculate_unit_scale(file)
last_segment_height = float(e[1, 3]) / unit_scale
file.discard_transaction()
design_parameters = file.createIfcAlignmentVerticalSegment(
StartDistAlong=last_segment_dist_along,
HorizontalLength=0.0,
StartHeight=0.0,
StartHeight=last_segment_height,
StartGradient=last_segment_end_gradient,
EndGradient=last_segment_end_gradient,
PredefinedType="CONSTANTGRADIENT",