Table 6.222 — DRM_Rendering_Properties

Property

Description

Class
  • <DRM Rendering Properties>

Superclass

Subclass
  • None.

Definition

An instance of this DRM class specifies a selection of shading algorithms, display sides, and presentation styles suggested to use when rendering <DRM Geometry Representation> instances, particularly <DRM Polygon> instances.

The fill_method field specifies the colour blending method to be used.

The shading_method field specifies the shading algorithm to be used.

The colour_binding field specifies the colour inheritance / overload rule in effect.

The style field specifies the set of Display_Style tokens specifying what combination of wire vs. solid style is to be used.

The side field specifies the set of Display_Side tokens specifying which side(s) to display.

The front side of a <DRM Polygon> instance is the side that has a counterclockwise orientation of the ordered <DRM Vertex> components of the <DRM Polygon> instance. Normally either both sides or just the front sides of <DRM Polygon> instances are rendered; rendering just the front side of a <DRM Polygon> instance culls out the back face of the <DRM Polygon> instance.

Clarifications

1 If present, this component identifies the type of sensor for which the given <DRM Rendering Properties> instance is applicable.

Class diagram

Figure 6.267 — DRM_Rendering_Properties

Inherited field elements

Field name

Range

Field data type

None

    

Field elements

Field name

Range

Field data type

fill_method

 

Pixel_Fill_Method

shading_method

 

Shading_Method

colour_binding

 

Colour_Binding

style

 

Display_Style

side

 

Display_Side

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)
  • None.

Composed of (two-way) (inherited)
  • None.

Composed of (two-way)

Composed of (two-way metadata) (inherited)
  • None.

Composed of (two-way metadata)
  • None.

Component of (two-way) (inherited)
  • None.

Component of (two-way)

Constraints

Example(s)

  • Render flat shaded, solid, front-sides of polygons.

  • Render interpolation shaded, solid, front-sides of polygons.

  • Render Gouraud shaded, wire-frame, both-sides of polygons.

  • Render Phong shaded, solid, back-sides of polygons (possibly for a transmittal that describes an enclosed volume, and all of the polygons defining the enclosed volume face outwards, and the simulation would occur inside the enclosed volume, so only the back sides of the polygons shall be rendered).