IfcDraughtingPreDefinedCurveFont

Semantic definitions at the entity

Entity definition

The draughting predefined curve font type defines a selection of widely used curve fonts for draughting purposes by name.

NOTE The IfcDraughtingPreDefinedCurveFont is an entity that had been adopted from ISO 10303, Industrial automation systems and integration—Product data representation and exchange, Part 46 Technical Corrigendum 2: Integrated generic resources: Visual presentation.

Figure 359 illustrates predefined curve fonts.

Figure 359 — Draughting predefined curve font

NOTE If the IfcDraughtingPreDefinedCurveFont is used within an IfcCurveStyleFontAndScaling then the segment and space lengths that are given in the table are as such for the scale factor 1.0

NOTE Corresponding ISO 10303 name: pre_defined_curve_font. Please refer to ISO/IS 10303-46:1994 TC2, page 12 for the final definition of the formal standard.

HISTORY New entity in IFC2x2.

Formal Propositions

Rule	Description
PreDefinedCurveFontNames	The name of the IfcDraughtingPreDefinedCurveFont shall be 'continuous', 'chain', 'chain double dash', 'dashed', 'dotted' or 'by layer'.

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	C
IfcPresentationItem
IfcPreDefinedItem
1	Name	IfcLabel	[1:1]	The string by which the pre defined item is identified. Allowable values for the string are declared at the level of subtypes.	X
IfcPreDefinedCurveFont
IfcDraughtingPreDefinedCurveFont

Formal representations

XSD Specification

 <xs:element name="IfcDraughtingPreDefinedCurveFont" type="ifc:IfcDraughtingPreDefinedCurveFont" substitutionGroup="ifc:IfcPreDefinedCurveFont" nillable="true"/>

 <xs:complexType name="IfcDraughtingPreDefinedCurveFont">

  <xs:complexContent>

   <xs:extension base="ifc:IfcPreDefinedCurveFont"/>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcDraughtingPreDefinedCurveFont

 SUBTYPE OF (IfcPreDefinedCurveFont);

 WHERE

  PreDefinedCurveFontNames : SELF\IfcPredefinedItem.Name IN
       ['continuous',
        'chain',
        'chain double dash',
        'dashed',
        'dotted',
        'by layer'];
END_ENTITY;

 EXPRESS-G diagram

	Vordefinierter Zeichnungsliniensatz
	Draughting Pre Defined Curve Font