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IfcIO v0.6.0

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@github-actions github-actions released this 10 Nov 19:25
· 40 commits to main since this release
v0.6.0
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Major Additions & Capabilities

  • Constructive Solid Geometry (CSG) & Boolean Clipping (IfcBooleanResult / IfcBooleanClippingResult):
    • Exact 3D mesh evaluation (ToMesh()) via Sutherland-Hodgman polygon plane clipping without external dependencies.
    • Planar primitives: IfcPlane (reference point & normal vector, signed perpendicular distance) and IfcHalfSpaceSolid (infinite clipping plane with AgreementFlag).
    • Convenient model builder model.AddClippedSolid(...) for rafters, slanted roof cuts, foundation trenches, and arbitrary boolean shapes.
    • Full ISO 10303-21 STEP physical file serialization (IFCBOOLEANCLIPPINGRESULT, IFCBOOLEANRESULT, IFCHALFSPACESOLID, IFCPLANE) and deserialization.
  • Standard Structural Steel Profiles (IfcProfileDef Subtypes):
    • IfcIShapeProfileDef: parameterized I-beam / H-beam cross-section (OverallWidth, OverallDepth, WebThickness, FlangeThickness, FilletRadius).
    • IfcLShapeProfileDef: parameterized L-angle cross-section (Depth, Width, Thickness, FilletRadius).
    • IfcUShapeProfileDef: parameterized U-channel cross-section (Depth, FlangeWidth, WebThickness, FlangeThickness, FilletRadius).
    • Accurate 2D boundary polygons with 3D extrusion (ToMesh()) and STEP roundtrip.
  • Topological MEP Ports & Network Connectivity (IfcDistributionPort):
    • Strongly-typed IfcDistributionPort with IfcFlowDirection (Source, Sink, SourceAndSink, NotDefined).
    • Port-to-element association via IFCRELCONNECTSPORTTOELEMENT.
    • Port-to-port topological continuity via IFCRELCONNECTSPORTS.
    • Breadth-First Search (BFS) network traversal via IfcModel.TraceConnectedElements(...) to navigate connected duct, pipe, and cable networks.
    • Full STEP serialization and deserialization.
  • Multi-layer Material Systems & Structural Profiles (IfcIO.Model):
    • Layered composite constructions: IfcMaterialLayer, IfcMaterialLayerSet, IfcMaterialLayerSetUsage with reference line offset.
    • Structural profile materials: IfcMaterialProfile, IfcMaterialProfileSet, IfcMaterialProfileSetUsage with cardinal point alignment.
    • Material assignment to building elements via IFCRELASSOCIATESMATERIAL.
    • Model helpers: model.AddMaterialLayerSet(...), model.AssignMaterialLayerSet(...), model.AddMaterialProfileSet(...), model.AssignMaterialProfileSet(...).
  • Validation Engine Enhancements (IfcValidator):
    • IFC_CSG_OPERAND_MISSING: verifies operands in boolean results.
    • IFC_PROFILE_SECTION: verifies geometric validity constraints ($2 t_f < H$ and $t_w < B$ for I-beams; $t < B, H$ for L-angles; $2 t_f < H$ and $t_w < B$ for U-channels).
    • IFC_PORT_DIRECTION: flags ports with undefined flow directions.
    • IFC_LAYER_THICKNESS: ensures layer thicknesses are positive and finite.
Assets 11
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