3D Graphics Programming with QuickDraw 3D 1.5.4

Caps

Labels

ASCII: Caps
Binary: caps ( = 0x63617073 )

caps flags



 
None                0x00000000

Top                 0x00000001

Bottom              0x00000002

Constant descriptions

None: The parent cone or cylinder shall not have any caps.
Top: The parent cylinder shall have a cap at the end opposite to its base.
Bottom: The parent cone or cylinder shall have a cap at its base.

Data Format



 
CapsFlags           caps

caps: A bitfield expression specifying one or more flags.

Data Size

Description

A cap is a plane figure having the shape of an oval that closes the base of a cone or one end of a cylinder. A cone and a cylinder may each be supplied with a bottom cap. Only a cylinder may be supplied with a top cap. The length of the semimajor axis of a cap is equal to the length of the major radius of its parent object; the length of the semiminor axis of a cap is equal to the length of the minor radius of its parent object. A cap lies in a plane perpendicular to the orientation vector of its parent object. The center of a top cap is at the end of the orientation vector of its parent object; the center of a bottom cap is at the origin of its parent object. A separate attribute set may be assigned to each cap of an object having one or more caps.

Parent Hierarchy

Data, cap data.

Parent Objects

Cone, cylinder (always).

Child Objects

None.

Example



 
Container (

    Cone ( ... )

    Caps ( Top | Bottom )

    Container (

        BottomCapAttributeSet ( )

        DiffuseColor ( 0 1 0 )

    )

)

Default Value

None.