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Adobe Acrobat SDK
Multimedia Features (Chapter 9 in PDF Reference)
Adobe® Supplement to the ISO 32000
9.6.1 RichMedia Annotations 81
A keyframe animation can be provided as part of
Flash
or
3D
model content. Keyframe animation is an
interactive feature that is highly dependent on the behavior and controls provided by the conforming
reader. Table 9.50c shows the entries in a RichMediaAnimation dictionary.
Example:
A RichMediaSettings dictionary
20 0 obj
% RichMediaSettings dictionary
<< /Type /RichMediaSettings
/Activation
<< /Type /RichMediaActivation % RichMediaActivation Dictionary
/Condition /XA
/Configuration 14 0 R
% Reference to element in Configurations array
/View 19 0 R
% Reference to element in Views array
/Animation
% RichMediaAnimation dictionary
<< /Type /RichMediaAnimation
/Subtype /Linear
/Speed 1
/PlayCount -1
>>
/Presentation 21 0 R
TABLE 9.50c Entries in a RichMediaAnimation dictionary
KEY
TYPE
VALUE
Type
name
(
Optional; ExtensionLevel 3
) The type of PDF object that this
dictionary describes. If present, the type shall be
RichMediaAnimation
for an animation dictionary.
Subtype
name
(
Optional; ExtensionLevel 3
) The animation style described by
this dictionary. Valid values are
None
,
Linear
, and
Oscillating
. See Table 9.37 of the
PDF Reference
, sixth
edition, PDF 1.7, for descriptions of these animation styles.
If an animation style is encountered other than those
described, an animation style of
None
is used.
Default value:
None
PlayCount
integer
(
Optional; ExtensionLevel 3
) An integer specifying the play count
for this animation style. A nonnegative integer represents the
number of times the animation is played. A negative integer
indicates that the animation is infinitely repeated.
This value is ignored for an animation subtype of type
None
.
Default value: -1
Speed
number
(
Optional; ExtensionLevel 3
) A positive number specifying the
speed to be used when running the animation. A value greater
than one shortens the time it takes to play the animation, or
effectively speeds up the animation. This allows authors to
change the desired speed of animations without re-authoring
the content.
This value is ignored for an animation subtype of type
None
.
Default value: 1