Table 6.199—DRM_Polygon

Property

Description

Superclass

·         <DRM Surface Geometry>

Class

·         <DRM Polygon>

Subclass

·         none

Definition

An object of this DRM class specifies a bounded portion of a plane, defined by a set of three or more <DRM Vertex>s listed in counter-clockwise order. The final segment connecting the last <DRM Vertex> to the first <DRM Vertex> is implicit, not explicit (i.e., the first <DRM Vertex> is not duplicated to also appear as the last <DRM Vertex> of the <DRM Polygon>).

Example(s)

·         One of the surfaces representing the geometry of a vehicle.

Inherited field elements

field_name

range

Field_Data_Type

none

 

 

Field elements

field_name

range

Field_Data_Type

polygon_flags

 

Polygon_Flags

Associated to (one-way) (inherited)

·         none

Associated to (one-way)

·         none

Associated by (one-way) (inherited)

·         none

Associated by (one-way)

·         none

Associated with (two-way) (inherited)

·         none

Associated with (two-way)

·         a bounded set of 0..2 {ordered} <DRM Geometry Face>s

Composed of (two-way) (inherited)

·         zero or more {ordered} <DRM Attribute Set Index>s

·         zero or one <DRM Classification Data>

·         zero or more {ordered} <DRM Colour>s

·         zero or more {ordered} <DRM Image Mapping Function>s

·         zero or one <DRM Light Rendering Properties>

·         zero or one <DRM Presentation Domain>

·         zero or more <DRM Property Table>s

·         zero or more <DRM Property Table Reference>s

·         zero or more <DRM Property Value>s

·         zero or one <DRM Rendering Priority Level>

·         zero or one <DRM Rendering Properties>

·         zero or more <DRM Tack Point>s

·         zero or one <DRM Union Of Primitive Geometry>

Composed of (two-way)

·         three or more {ordered} <DRM Base Vertex>s

·         zero or one <DRM Polygon Control Link>

·         zero or more <DRM Reference Vector>s

Composed of (two-way metadata) (inherited)

·         zero or one ,DRM Time Constraints Data>

Composed of (two-way metadata)

·         none

Component of (two-way) (inherited)

·         one or more of <DRM Union Of Primitive Geometry>s

Component of (two-way)

·         none

Constraints

·         Colour mapping restrictions

·         Image mapping functions and texture coordinates

·         Nested primitive geometry

·         No attribute conflicts

·         Non-crossing aggregations

·         Non-cyclic aggregations

·         Non-nestable continuous level of detail

·         Precedence of Attribute_Set_Index

Notes

none

Class diagram

<DRM Polygon>