Class Name: Inline Colour

Superclass - <Colour>

Subclasses

Definition

An instance of this DRM class is a <Colour> instance that is specified inline in the sense that it is completely specified as a component of the coloured object without referring to any <Colour Table> instance.

Primary Page in DRM Diagram:

• 14

Secondary Pages in DRM Diagram:

Example

1. Consider a <Polygon> instance with both an <Image Mapping Function> component and an <Inline Colour> component where the <Inline Colour> component's colour_mapping = { Front_Image_Blend }. This indicates that the colour is to be applied to the front of the <Polygon> instance and is to be combined with the texture mapping information provided by the <Image Mapping Function> instance.

2. Consider a <Polygon> instance with an <Inline Colour> component where the <Inline Colour> instance has colour_mapping = { Back_Primary }. This colour is used for the back face of the <Polygon> instance.

FAQs

Why do <Colour Table> instances have <Primitive Colour> components rather than <Inline Colour> components?

<Colour Table> instances used to be composed of <Inline Colour> instances, but problems arose since both <Colour Index> and <Inline Colour> instances can have <Translucency> components. When a <Colour Index> instance that has a <Translucency> component refers to an entry in a <Colour Table> instance, the interpretation is clearer if the <Colour Table> instance's entry cannot specify any additional <Translucency> instance.

Consequently, <Primitive Colour> exists so that 'just the colour' can be put into a <Colour Table> instance's entry.

Constraints

• <<Publishable Object>>
• <<Colour Mapping Constraints>>
• <<Presentation Domain Constraints>>

Composed of (two-way) (inherited)

• zero or one <Presentation Domain> instance (notes)
• zero or one <Translucency> instance

Composed of (two-way)

• one <Primitive Colour> instance

Component of (two-way) (inherited)

• zero or more <Aggregate Feature> instances
• zero or more <Aggregate Geometry> instances
• zero or more <Primitive Feature> instances
• zero or more <Primitive Geometry> instances
• zero or more <Property Set> instances
• zero or more <Vertex> instances

Inherited Field Elements

Notes

Composed of Notes

Presentation_Domain

Fields Notes

colour_mapping

The colour_mapping field specifies the set of SE_Colour_Mapping members applicable to the <Colour> instance.