Attribute Set Index

The SEDRIS Data Representation Model APPENDIX A - Classes Attribute Set Index

Class Name: Attribute Set Index

This DRM class is concrete and has no subclasses.

An instance of this DRM class provides the means of referencing the contents of an <Attribute Set> that is contained in an <Attribute Set Table>.

An <Attribute Set Index> specifies an index into the primary <Attribute Set Table> of the <Attribute Set Table Group> to which it is associated. The <Attribute Set Table Group> specifies which of its <Attribute Set Table> components is being used, while the <Attribute Set Index> specifies which <Attribute Set> within that primary <Attribute Set Table> is being referenced.

Consider an <Attribute Set Table Group>, such that its primary <Attribute Set Table>'s kth <Attribute Set> consists of <Colour> and <Image Mapping Function> instances for sandy ground under normal, Out the Window (OTW) viewing conditions.
A terrain <Polygon> that references this set will do so by having an <Attribute Set Index> component that is associated to the <Attribute Set Table Group> and the index value of which is set to k.

Is an <Attribute Set Index> a 1-based index?: Yes.
I am attempting to consume an object, e.g. a <Point Feature>, the attributes of which are specified by an <Attribute Set Index>. What can I do to get access to the actual attribute objects being referred to?: A consumer can access the actual attribute objects contained within the <Attribute Set Table>, as though they had been directly attached to the object. See SE_InitializeComponentIterator()'s directly_attach_table_components parameter, and SE_GetComponent()'s directly_attach_table_components parameter.

None.

This class has no inherited field elements.

SE_Integer_Positive	index;	(notes)

 This indicates which <Attribute Set> is being referred to
 within the primary <Attribute Set Table> of the
 associated <Attribute Set Table Group>.

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Last updated: May 15, 2003