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Property
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Description
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Class
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- <DRM Property Set Table Library>
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Superclass
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Subclass
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Definition
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An instance of this DRM class is a <DRM Library> of
<DRM Property Set Table Group>
instances.
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Class diagram
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Figure 6.229 —
DRM_Property_Set_Table_Library
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Inherited field elements
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Field name
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Range
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Field data type
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None |
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Field elements
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Field name
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Range
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Field data type
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None |
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Associated to (one-way) (inherited) |
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Associated to (one-way) |
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Associated by (one-way) (inherited) |
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Associated by (one-way) |
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Associated with (two-way) (inherited) |
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Associated with (two-way) |
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Composed of (two-way) (inherited) |
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Composed of (two-way) |
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Composed of (two-way metadata) (inherited) |
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Composed of (two-way metadata) |
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Component of (two-way) (inherited) |
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Component of (two-way) |
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Constraints
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Clarifications
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Example(s)
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Consider a transmittal containing large stretches of various types
of terrain, represented with texture-mapped
<DRM Polygon> instances, where the textures are blended
with <DRM Colour> instances.
For efficiency, the source of this transmittal uses a library of
terrain textures, which are repeated at intervals across the
terrain. Consequently, a limited number of
<DRM Image Mapping Function>,
<DRM Colour> pairs are repeated across a large number
of <DRM Polygon> instances as components.
Rather than creating many duplicate objects, the data provider
creates an <DRM Property Set
Table Library>. Each of the <DRM
Image Mapping Function>, <DRM Colour> pairs is
placed in an <DRM Property Set>, which
is in turn stored in the primary <DRM
Property Set Table> of an <DRM
Property Set Table Group> within the library.
Each <DRM Polygon> is then given an
<DRM Property Set Index> component,
which is associated to the appropriate
<DRM Property Set Table Group>.
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