IFC 4.3.x development

8.12.3.7 IfcCurveStyleFontAndScaling

8.12.3.7.1 Semantic definitions at the entity

The IfcCurveStyleFontAndScaling allows for the reuse of the same curve style definition in several sizes. The definition of the CurveFontScale is the scaling of a base curve style pattern to be used as a new or derived curve style pattern.

NOTE  The CurveFontScale should not be mixed up with the target plot scale.

An example for IfcCurveStyleFontAndScaling is the sizing of a basic curve style dash pattern 'dash' (visible 0.01m, invisible 0.005m) into 'dash large' with CurveFontScale = 2 (resulting in visible 0.02m, invisible 0.01m), and into 'dash small' with CurveFontScale = 0.5 (resulting in visible 0.005m, invisible 0.0025m).

NOTE  Definition according to ISO/CD 10303-46:1992
A curve style font and scaling is a curve style font and a scalar factor for that font, so that a given curve style font may be applied at various scales.

NOTE  Corresponding ISO 10303 name: curve_style_font_and_scaling. Please refer to ISO/IS 10303-46:1994 for the final definition of the formal standard.

HISTORY  New entity in IFC2x2.

8.12.3.7.1 Attributes

#Attribute Type Description
IfcPresentationItem
IfcCurveStyleFontAndScaling
1Name OPTIONAL IfcLabel Name that may be assigned with the scaling of a curve font.
2CurveFont IfcCurveStyleFontSelectThe curve font to be scaled.
3CurveFontScalingIfcPositiveRatioMeasureThe scale factor.

8.12.3.7.2 Entity inheritance

dot_inheritance IfcCurveStyleFontAndScaling IfcCurveStyleFontAndScaling IfcPresentationItem IfcPresentationItem IfcCurveStyleFontAndScaling->IfcPresentationItem IfcPresentationItem_children 16 more... IfcPresentationItem_children->IfcPresentationItem

8.12.3.7.3 Formal representations

ENTITY IfcCurveStyleFontAndScaling
 SUBTYPE OF (IfcPresentationItem);
	Name : OPTIONAL IfcLabel;
	CurveFont : IfcCurveStyleFontSelect;
	CurveFontScaling : IfcPositiveRatioMeasure;
END_ENTITY;