Class Name: Inline Colour

Superclass - <Colour>

Subclasses

Definition

An instance of this DRM class is a <Colour> 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>.

Primary Page in DRM Diagram:

• 14

Secondary Pages in DRM Diagram:

Example

1. Consider a <Polygon> with both an <Image Mapping Function> and an <Inline Colour>, where the <Inline Colour>'s colour_mapping = { SE_CLR_MAPNG_FRONT_IMAGE_BLEND }. This indicates that the colour is to be applied to the 'front' of the <Polygon>, and to be combined with the texture mapping information provided by the <Image Mapping Function>.
2. Consider a <Polygon> with an <Inline Colour>, where the <Inline Colour> has colour_mapping = { SE_CLR_MAPNG_BACK_PRIMARY }. This colour is used for the back face of the < Polygon>.

FAQs

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

<Colour Tables> used to be composed of <Inline Colours>, but problems arose since both <Colour Index> and <Inline Colour> instances can have <Translucency>. When a <Colour Index> that has a <Translucency> component refers to an entry in a <Colour Table>, the interpretation is clearer if the <Colour Table>'s entry cannot have any additional <Translucency>. Consequently, <Primitive Colour> exists so that we can put 'just the colour' into a <Colour Table>'s entry.

Constraints

• <<Colour Mapping Restrictions>>

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 one <Colour Entry Table> instance
• zero or more <Aggregate Feature> instances
• zero or more <Aggregate Geometry> instances
• zero or more <Attribute Set> instances
• zero or more <Base Vertex> instances
• zero or more <Colour Set> instances
• zero or more <Primitive Feature> instances
• zero or more <Primitive Geometry> instances

Inherited Field Elements

Notes

Composed of Notes

Presentation_Domain

 if present, identifies the type of sensor for which the <Colour> is
 applicable

Fields Notes

colour_mapping

 The set of SE_Colour_Mapping tokens applicable to this <Colour>.