IfcCurveStyleFontPattern

注：定义符合ISO/CD 10303-46:1992

曲线样式字体模式是以表示区域为单位的一对可见和不可见的曲线段长度度量。

注：对应ISO 10303名称：曲线样式字体图案。正式标准的最终定义请参考ISO/IS 10303-46:1994。

IFC2x2中增加的新实体。

ormal Propositions

Rule	Description
VisibleLengthGreaterEqualZero	The value of a visible pattern length shall be equal or greater then zero.

 

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcPresentationItem
IfcCurveStyleFontPattern
1	VisibleSegmentLength	IfcLengthMeasure	[1:1]	The length of the visible segment in the pattern definition. NOTE  For a visible segment representing a point, the value 0. should be assigned.	X
2	InvisibleSegmentLength	IfcPositiveLengthMeasure	[1:1]	The length of the invisible segment in the pattern definition.	X

 

EXPRESS Specification

ENTITY IfcCurveStyleFontPattern
 SUBTYPE OF (IfcPresentationItem);
  VisibleSegmentLength : IfcLengthMeasure;
  InvisibleSegmentLength : IfcPositiveLengthMeasure;
 WHERE
  VisibleLengthGreaterEqualZero : VisibleSegmentLength >= 0.;
END_ENTITY;