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20252453-T-424 项目

4.2.2.3.3.1 多边形几何体(Polygonal Geometry)

下图展示了应用此概念时使用的通用类和关系。

<a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPolygonalFaceSet.htm'>IfcPolygonalFaceSet</a> IfcPolygonalFaceSet      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:1]      HasColours [0:1]      HasTextures [0:?] 2. Closed [0:1] 3. Faces [1:?] 4. PnIndex [1:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianPointList3D.htm'>IfcCartesianPointList3D</a> IfcCartesianPointList3D      LayerAssignment [0:1]      StyledByItem [0:1] 1. CoordList [1:?] 2. TagList [1:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPolygonalFaceSet.htm'>IfcPolygonalFaceSet</a>:Coordinates1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianPointList3D.htm'>IfcCartesianPointList3D</a>:IfcCartesianPointList3D0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcBoolean.htm'>IfcBoolean</a> IfcBoolean <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPolygonalFaceSet.htm'>IfcPolygonalFaceSet</a>:Closed1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcBoolean.htm'>IfcBoolean</a>:IfcBoolean0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedPolygonalFace.htm'>IfcIndexedPolygonalFace</a> IfcIndexedPolygonalFace      LayerAssignment [0:1]      StyledByItem [0:1] 1. CoordIndex [3:?]      ToFaceSet [1:?]      HasTexCoords [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPolygonalFaceSet.htm'>IfcPolygonalFaceSet</a>:Faces1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedPolygonalFace.htm'>IfcIndexedPolygonalFace</a>:IfcIndexedPolygonalFace0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedPolygonalFaceWithVoids.htm'>IfcIndexedPolygonalFaceWithVoids</a> IfcIndexedPolygonalFaceWithVoids      LayerAssignment [0:1]      StyledByItem [0:1] 1. CoordIndex [3:?]      ToFaceSet [1:?]      HasTexCoords [0:1] 2. InnerCoordIndices [1:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPolygonalFaceSet.htm'>IfcPolygonalFaceSet</a>:Faces1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedPolygonalFaceWithVoids.htm'>IfcIndexedPolygonalFaceWithVoids</a>:IfcIndexedPolygonalFaceWithVoids0 IfcPositiveInteger_3 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPolygonalFaceSet.htm'>IfcPolygonalFaceSet</a>:PnIndex1->IfcPositiveInteger_3:IfcPositiveInteger0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedColourMap.htm'>IfcIndexedColourMap</a> IfcIndexedColourMap 1. MappedTo [1:1] 2. Opacity [0:1] 3. Colours [1:1] 4. ColourIndex [1:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcPolygonalFaceSet.htm'>IfcPolygonalFaceSet</a>:HasColours1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedColourMap.htm'>IfcIndexedColourMap</a>:MappedTo0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLengthMeasure.htm'>IfcLengthMeasure</a> IfcLengthMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianPointList3D.htm'>IfcCartesianPointList3D</a>:CoordList1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLengthMeasure.htm'>IfcLengthMeasure</a>:IfcLengthMeasure0 IfcPositiveInteger_0 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedPolygonalFace.htm'>IfcIndexedPolygonalFace</a>:CoordIndex1->IfcPositiveInteger_0:IfcPositiveInteger0 IfcPositiveInteger_1 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedPolygonalFaceWithVoids.htm'>IfcIndexedPolygonalFaceWithVoids</a>:CoordIndex1->IfcPositiveInteger_1:IfcPositiveInteger0 IfcPositiveInteger_2 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedPolygonalFaceWithVoids.htm'>IfcIndexedPolygonalFaceWithVoids</a>:InnerCoordIndices1->IfcPositiveInteger_2:IfcPositiveInteger0 IfcNormalisedRatioMeasure_0 IfcNormalisedRatioMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedColourMap.htm'>IfcIndexedColourMap</a>:Opacity1->IfcNormalisedRatioMeasure_0:IfcNormalisedRatioMeasure0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcColourRgbList.htm'>IfcColourRgbList</a> IfcColourRgbList 1. ColourList [1:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedColourMap.htm'>IfcIndexedColourMap</a>:Colours1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcColourRgbList.htm'>IfcColourRgbList</a>:IfcColourRgbList0 IfcPositiveInteger_4 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedColourMap.htm'>IfcIndexedColourMap</a>:ColourIndex1->IfcPositiveInteger_4:IfcPositiveInteger0 IfcNormalisedRatioMeasure_1 IfcNormalisedRatioMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcColourRgbList.htm'>IfcColourRgbList</a>:ColourList1->IfcNormalisedRatioMeasure_1:IfcNormalisedRatioMeasure0
Figure 4.2.2.3.3.1.A