Abstract Class Name: Base Vertex

Superclass - <SEDRIS Abstract Base>

Subclasses

• <Vertex>
• <Vertex With Component Indices>

Definition

An instance of one of the concrete subclasses of this DRM class specifies a point where two sides of a <Polygon> intersect, or any end of a line segment, such as those implicitly specified by a <Finite Element Mesh>.

Primary Page in DRM Diagram:

• 18

Secondary Pages in DRM Diagram:

• 5
• 13
• 14
• 23

Example

See specific subclasses for examples.

FAQs

Why doesn't <Base Vertex> have a <Location> component?

Because while the <Vertex> subclass requires a <Location>, the <Location> is optional for <Vertex With Component Indices>, which has the option of using its location_index field to select a location from a <Location Table>.

Constraints

• <<Image Mapping Functions and Texture Coordinates>>

Associated with (two-way)

• zero or one <Geometry Node> instance

Composed of (two-way)

• zero or more <Colour> instances
• zero or one <Conformal Behaviour> instance
• zero or one <Morph Point> instance
• zero or more <Property Table Reference> instances
• zero or one <Reference Vector> instance
• zero or more {ordered} <Texture Coordinate> instances

Component of (two-way)

• zero or more <Arc> instances
• zero or more <Finite Element Mesh> instances
• zero or more <Line> instances
• zero or more <Polygon> instances

Inherited Field Elements