该页全部中文内容仅供20252453-T-424 项目组内部使用

20252453-T-424 项目

4.2.2.3.3.2 三角形几何体(Triangulated 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/IfcTriangulatedFaceSet.htm'>IfcTriangulatedFaceSet</a> IfcTriangulatedFaceSet      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:1]      HasColours [0:1]      HasTextures [0:?] 2. Normals [1:?] 3. Closed [0:1] 4. CoordIndex [1:?] 5. 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/IfcTriangulatedFaceSet.htm'>IfcTriangulatedFaceSet</a>:Coordinates1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianPointList3D.htm'>IfcCartesianPointList3D</a>:IfcCartesianPointList3D0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcParameterValue.htm'>IfcParameterValue</a> IfcParameterValue <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTriangulatedFaceSet.htm'>IfcTriangulatedFaceSet</a>:Normals1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcParameterValue.htm'>IfcParameterValue</a>:IfcParameterValue0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcBoolean.htm'>IfcBoolean</a> IfcBoolean <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTriangulatedFaceSet.htm'>IfcTriangulatedFaceSet</a>:Closed1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcBoolean.htm'>IfcBoolean</a>:IfcBoolean0 IfcPositiveInteger_0 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTriangulatedFaceSet.htm'>IfcTriangulatedFaceSet</a>:CoordIndex1->IfcPositiveInteger_0:IfcPositiveInteger0 IfcPositiveInteger_1 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcTriangulatedFaceSet.htm'>IfcTriangulatedFaceSet</a>:PnIndex1->IfcPositiveInteger_1: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/IfcTriangulatedFaceSet.htm'>IfcTriangulatedFaceSet</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 <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_2 IfcPositiveInteger <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedColourMap.htm'>IfcIndexedColourMap</a>:ColourIndex1->IfcPositiveInteger_2:IfcPositiveInteger0 IfcNormalisedRatioMeasure_1 IfcNormalisedRatioMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcIndexedColourMap.htm'>IfcIndexedColourMap</a>:Opacity1->IfcNormalisedRatioMeasure_1:IfcNormalisedRatioMeasure0 IfcNormalisedRatioMeasure_0 IfcNormalisedRatioMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcColourRgbList.htm'>IfcColourRgbList</a>:ColourList1->IfcNormalisedRatioMeasure_0:IfcNormalisedRatioMeasure0
Figure 4.2.2.3.3.2.A