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Implements business to geometry mapping for alignment cant.

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Also fixes problems that were created by this work in other files
This commit is contained in:
Richard Brice
2025-03-29 15:27:05 -07:00
parent 7bdbfee041
commit 42c49af4e3
13 changed files with 2249 additions and 374 deletions
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src/ifcopenshell-python/ifcopenshell/api/alignment/add_zero_length_segment.py
+73 -20
View File
@@ -45,6 +45,9 @@ def add_zero_length_segment(file: ifcopenshell.file, entity: entity_instance) ->
f"Expected entity type to be one of {[_ for _ in expected_types]}, instead received '{entity.is_a()}"
)
if ifcopenshell.api.alignment.has_zero_length_segment(entity):
return # do nothing if the entity already has a zero length segment
if entity.is_a("IfcCompositeCurve"):
last_segment = entity.Segments[-1]
settings = ifcopenshell.geom.settings()
@@ -67,7 +70,7 @@ def add_zero_length_segment(file: ifcopenshell.file, entity: entity_instance) ->
curve_segment = file.createIfcCurveSegment(
Transition="DISCONTINUOUS",
Placement=file.createIfcAxis2Placement2D(
Location=file.createIfcCartesianPoint(Coordinates=((x, y))),
Location=file.createIfcCartesianPoint(((x, y))),
RefDirection=file.createIfcDirection((dx, dy)),
),
SegmentStart=file.createIfcLengthMeasure(0.0),
@@ -80,22 +83,72 @@ def add_zero_length_segment(file: ifcopenshell.file, entity: entity_instance) ->
if 0 < len(rel.RelatedObjects):
last_segment = rel.RelatedObjects[-1]
if last_segment.is_a("IfcAlignmentSegment"):
design_parameters = file.createIfcAlignmentHorizontalSegment(
StartPoint=file.createIfcCartesianPoint(
(0.0, 0.0)
), # this is a little problematic. need to know the end point and tangent
StartDirection=0.0, # of the previous segment, which requires geometry mapping
SegmentLength=0.0,
PredefinedType="LINE",
)
segment = file.createIfcAlignmentSegment(
GlobalId=ifcopenshell.guid.new(), DesignParameters=design_parameters
)
ifcopenshell.api.nest.assign_object(
file,
related_objects=[
segment,
],
relating_object=entity,
)
break
if entity.is_a("IfcAlignmentHorizontal"):
design_parameters = file.createIfcAlignmentHorizontalSegment(
StartPoint=file.createIfcCartesianPoint(
(0.0, 0.0)
), # this is a little problematic. need to know the end point and tangent
StartDirection=0.0, # of the previous segment, which requires geometry mapping
SegmentLength=0.0,
PredefinedType="LINE",
)
segment = file.createIfcAlignmentSegment(
GlobalId=ifcopenshell.guid.new(), DesignParameters=design_parameters
)
ifcopenshell.api.nest.assign_object(
file,
related_objects=[
segment,
],
relating_object=entity,
)
break
elif entity.is_a("IfcAlignmentVertical"):
design_parameters = file.createIfcAlignmentVerticalSegment(
StartDistAlong=last_segment.DesignParameters.StartDistAlong
+ last_segment.DesignParameters.HorizontalLength,
HorizontalLength=0.0,
StartHeight=0.0,
StartGradient=last_segment.DesignParameters.EndGradient,
EndGradient=last_segment.DesignParameters.EndGradient,
PredefinedType="CONSTANTGRADIENT",
)
segment = file.createIfcAlignmentSegment(
GlobalId=ifcopenshell.guid.new(), DesignParameters=design_parameters
)
ifcopenshell.api.nest.assign_object(
file,
related_objects=[
segment,
],
relating_object=entity,
)
break
elif entity.is_a("IfcAlignmentCant"):
design_parameters = file.createIfcAlignmentCantSegment(
StartDistAlong=last_segment.DesignParameters.StartDistAlong
+ last_segment.DesignParameters.HorizontalLength,
HorizontalLength=0.0,
StartCantLeft=(
last_segment.DesignParameters.EndCantLeft
if last_segment.DesignParameters.EndCantLeft != None
else last_segment.DesignParameters.StartCantLeft
),
StartCantRight=(
last_segment.DesignParameters.EndCantRight
if last_segment.DesignParameters.EndCantRight != None
else last_segment.DesignParameters.StartCantRight
),
PredefinedType="CONSTANTCANT",
)
segment = file.createIfcAlignmentSegment(
GlobalId=ifcopenshell.guid.new(), DesignParameters=design_parameters
)
ifcopenshell.api.nest.assign_object(
file,
related_objects=[
segment,
],
relating_object=entity,
)
break