Table 306 – Entries in a 3D background dictionary

Key

Type

Value

Type

name

(Optional) The type of PDF object that this dictionary describes; if present, shall be 3DBG for a 3D background dictionary.

Subtype

name

(Optional) The type of background. The only valid value shall be SC (solid colour), which indicates a single opaque colour. Default value: SC.

CS

name or array

(Optional) The colour space of the background. The only valid value shall be the name DeviceRGB. Default value: DeviceRGB.

PDF consumers shall be prepared to encounter other values that may be supported in future versions of PDF.

C

(various)

(Optional) The colour of the background, in the colour space defined by CS. Default value: an array [1 1 1] representing the colour white when the value of CS is DeviceRGB.

EA

boolean

(Optional) If true, the background shall apply to the entire annotation; if false, the background shall apply only to the rectangle specified by the annotation’s 3D view box (the 3DB entry in Ta b l e 298 ). Default value: false.