Table 6.35 — DRM_Collision_Volume

Property

Description

Class
  • <DRM Collision Volume>

Superclass

Subclass
  • None.

Definition

An instance of this DRM class specifies a <DRM Enclosing Volume> instance that encompasses part (possibly all) of the <DRM Aggregate Geometry> instance of which it is a component, and is used in collision detection. During collision detection computations, a <DRM Collision Volume> instance is used in lieu of performing collision computations on each individual piece of the corresponding more complex geometry.

Class diagram

Figure 6.38 — DRM_Collision_Volume

Inherited field elements

Field name

Range

Field data type

None

    

Field elements

Field name

Range

Field data type

None

    

Default field values

Default field values for DRM_Collision_Volume

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)

Composed of (two-way)
  • None.

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

Composed of (two-way metadata)
  • None.

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

Component of (two-way)

Constraints

Clarifications

1The <DRM Location 3D> component specifies the volume centre.

2The <DRM Volume Extent> component specifies the volume shape.

Example(s)

  • Consider the gun tube of a weapon system, for which it will be necessary to compute intersections of the gun tube with other objects. The data provider constructs a cylindrical volume down the long axis of the tube and uses the resulting <DRM Cylindrical Volume Extent> instance to specify a <DRM Collision Volume> instance for the gun tube representation.

  • Consider a geometric representation of an automobile, for which it will be necessary to compute intersections of the front of the automobile with other objects. In this example, the data provider constructs a perpendicular volume projecting from the front bumper of the automobile representation, and uses the resulting <DRM Parallelepiped Volume Extent> instance to specify a <DRM Collision Volume> instance for the automobile representation.