IfcBuild2Axes
作者:互联网
IfcBuild2Axes
函数定义
注:根据ISO/CD 10303-42:1992的定义
此函数返回两个正交方向。u[1]在参考方向上,u[2]与u[1]垂直。如果输入数据不完整,则为参考方向提供默认值(1.0,0.0,0.0)。
注:功能改编自ISO 10303-42中定义的版本2。
IFC1.5中增加的新功能
EXPRESS Specification
FUNCTION IfcBuild2Axes (RefDirection : IfcDirection) : LIST [2:2] OF IfcDirection; LOCAL D : IfcDirection := NVL(IfcNormalise(RefDirection), IfcRepresentationItem() || IfcGeometricRepresentationItem () || IfcDirection([1.0,0.0])); END_LOCAL; RETURN([D, IfcOrthogonalComplement(D)]); END_FUNCTION;
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标签:IfcDirection,1.0,0.0,10303,ISO,IfcBuild2Axes 来源: https://www.cnblogs.com/herd/p/15627336.html