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IfcIO v0.9.0

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@github-actions github-actions released this 10 Nov 22:05
· 37 commits to main since this release
v0.9.0
0c704aa
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Major Additions & Capabilities

  • Spatial Grid System (IfcGridSystem, IfcGridAxis, IfcGridIntersection / IfcIO.Grids):
    • Full support for straight and multi-axis spatial grids, 2D/3D intersections, nearest grid axis/intersection lookup, and signed directional offset formatting (e.g. "A (+0.50m) / 1 (-0.20m)").
    • Automatic extraction of grid systems from IFCGRID and IFCGRIDAXIS entities (model.ExtractGridSystem()).
    • Element and clash location assignment (model.AssignGridLocations(), report.AssignGridLocations()).
    • Standalone XML grid definition roundtrip serialization (grids.SaveXml, IfcGridSystem.ReadXml / LoadXml).
  • 3D Geometric Measurement Engine (IfcMeasureEngine / IfcIO.Measure):
    • Point-to-point 3D measurement with $\Delta X, \Delta Y, \Delta Z$, horizontal distance, pitch, and azimuth projections (IfcMeasureEngine.MeasureDistance).
    • Point-to-mesh shortest distance using Christer Ericson's Voronoi region algorithm (IfcMeasureEngine.MeasurePointToMesh).
    • Mesh-to-mesh clearance measurement (IfcMeasureEngine.MeasureMeshToMesh).
    • Polyline path cumulative length and segment breakdowns (IfcMeasureEngine.MeasurePath).
    • Triangle surface area, normal, and closest point calculations.
    • Mesh surface area, closed volume (tetrahedron divergence theorem), and 3D centroid calculation.
  • Intelligent Clash Grouping & Clustering (IfcClashGrouper / IfcIO.Clash):
    • Spatial 3D proximity grouping using Disjoint-Set (Union-Find) clustering (report.GroupByProximity).
    • Primary MEP/structural element grouping (report.GroupByPrimaryElement).
    • Building storey grouping (report.GroupByStorey).
    • Structural grid location grouping (report.GroupByGrid).
    • Group dissolving (report.UngroupAll).
    • Grouped buildingSMART BCF 2.1 zip archive export with cluster camera viewpoints.
  • Enhanced Model Repair & Patching Recipes (IfcPatch / IfcIO.Patch):
    • MigrateSchema: upgrades IFC2x3 models to IFC4 and enables modern tessellated geometries.
    • ScaleModel: uniformly scales model geometry (e.g. converting mm to meters).
    • SetProperties: batch property assignment across elements matching an IfcSelector query.
  • Standalone 3D WebGL HTML Viewer Enhancements (IfcHtmlViewerExporter / IfcIO.Exporters):
    • Interactive 2-point 3D measurement tool with live distance, delta coordinates, and pitch overlay.
    • 2D canvas overlay drawing of architectural grid axes and bubble labels.
  • CLI Enhancements (IfcIO.Cli):
    • ifcio clash: added --group <proximity|element|storey|grid>, --radius <meters>, and --grids <grids.xml>.
    • ifcio patch: added --recipe <migrate|scale|offset|purge|reset>, --scale <factor>, and --migrate <schema>.
    • ifcio view, ifcio info: added --grids <grids.xml> and --export-grids <out.xml>.
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