IFC 4.3.0.1 (IFC4X3) development

8.12.3.3 IfcColourRgbList

8.12.3.3.1 Semantic definition

The IfcColourRgbList defines an ordered collection of RGB colour values. Each colour value is a fixed list of three colour components (red, green, blue). The attribute ColourList is a two-dimensional list, where:

  • first dimension is an unbounded list representing each colour value;
  • second dimension is a fixed list of three list members, where [1] is the red component, [2] the green component, and [3] the blue component.

8.12.3.3.2 Entity inheritance

8.12.3.3.3 Attributes

# Attribute Type Description
IfcColourRgbList (1)
1 ColourList LIST [1:?] OF LIST [3:3] OF IfcNormalisedRatioMeasure

List of colours defined by the red, green, blue components. All values are provided as a ratio of 0.0 ≤ value ≤ 1.0. When using 8bit for each colour channel, a value of 0.0 equals 0, a value of 1.0 equals 255, and values in between are interpolated.

Table 8.12.3.3.F

8.12.3.3.4 Examples

8.12.3.3.5 Formal representation

ENTITY IfcColourRgbList
 SUBTYPE OF (IfcPresentationItem);
	ColourList : LIST [1:?] OF LIST [3:3] OF IfcNormalisedRatioMeasure;
END_ENTITY;

8.12.3.3.6 References

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8.12.3.3.7 Changelog

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