Module alignment 

LandXML horizontal alignment semantics and deterministic numeric probes.

Structs

LandXmlAlignment

LandXmlAlignmentDocument

LandXmlAlignmentLimits

Alignment-specific record bounds layered over the shared hostile-XML bounds.

LandXmlAlignmentPi

One authored AlignPIs/AlignPI location, preserved independently from primitive PI leaves and with a stable source identity.

LandXmlAlignmentProbe

A source-level pick/probe result, independent of renderer chunks and IFC.

LandXmlAlignmentRenderData

Bounded derived display data. It is never a substitute for the source alignment document or its exact probe API.

LandXmlAlignmentRenderRefusal

One numeric display-sampling refusal retained with its authored identity.

LandXmlAlignmentRenderSpan

A bounded display polyline for one analytic source primitive. Numeric probes remain authoritative; these samples exist only for overlay/picking.

LandXmlAlignmentSegment

LandXmlCant

LandXmlCantProbe

The bracketing authored cant values at one physical alignment distance.

LandXmlCantStation

LandXmlCurve

LandXmlIrregularLine

LandXmlLine

LandXmlNumericDiagnostic

LandXmlPlanPoint

A LandXML plan coordinate in its declared northing easting [elevation] order. It is never silently swapped into a renderer axis convention.

LandXmlSpeedStation

LandXmlSpiral

LandXmlStationEquation

LandXmlStationMapping

All station labels at a geometric boundary. Equations deliberately retain both sides: a displayed label can be duplicated or a numeric gap can occur.

LandXmlSuperelevation

LandXmlSuperelevationEvent

LandXmlUnsupportedTransition

A transition retained but intentionally unavailable to numeric probing.

Enums

LandXmlAlignmentPrimitive

A source primitive with a durable source id independent of chunks or meshes.

LandXmlPointLocation

A coordinate leaf as authored. Resolving pntRef belongs to the later COGO source adapter; numerical geometry refuses unresolved references explicitly.

LandXmlRadius

LandXML uses INF for a transition’s infinite radius.

LandXmlRotation

LandXmlSuperelevationEventKind

The exact named events in LandXML Superelevation.

Constants

MAX_INTERACTIVE_STATION_PROBES

Maximum number of equal displayed-station matches returned to an interactive caller. More is an explicit refusal, not an unbounded result.

Functions

alignment_render_data

Sample only the supported analytic primitives from an existing source document. This does not parse XML and so is safe after stream finalization.

parse_landxml_alignments

Parse LandXML 1.2 horizontal alignments with default resource limits.

parse_landxml_alignments_optional

Parse a LandXML source while retaining an empty alignment collection when the document contains terrain-only content. This is for format adapters that own both source families; callers needing an alignment require the strict parse_landxml_alignments entry point above.

parse_landxml_alignments_optional_with_cancel

Parse a source with explicit resource limits while allowing terrain-only documents to return an empty alignment collection.

parse_landxml_alignments_with_cancel

Parse alignment source records with cancellation and explicit record limits.