Adobe 12020596 Supplement Manual page 74

Adobe Acrobat SDK
Adobe® Supplement to the ISO 32000
The key difference for an arc is that there are two addition points defining the start (
position for the arc. Additionally for an arc, the text position can be defined such that an extension arc,
with an arrowhead on either end, shall be generated, shown in red in
There are three parts to the text string displayed with the measurement: a numeric value (
( ), and an optional user string (
U
precision value (
viewer should convert the numeric value to a string and combine it with the units string and user text as
appropriate. This process is viewer dependent.
3D Comment Note
3D comment notes let users connect a comment to a specific piece of geometry in the 3D model. The
markup consists of a leader line that connects the model to a text box placed in the 3D scene. The text box
is rendered so that the text is always facing the user.
Commenting functionality is specified by creating a projection annotation that represents the 3D
measurement/markup within the commenting system. See
Annotations" on page 75
In addition to the entries in
following entries are defined for a 3D measurement dictionary with a
comment note.
KEY
A1
N1
). The display of the numeric value field number is also controlled by the
UT
), which indicates how many digits to display to the right of the decimal point. The
P
for additional details.
"TABLE 9.39a Entries in a 3D measurement/markup dictionary" on page
TABLE 9.39f Additional entries in a 3D measurement/markup dictionary
TYPE VALUE
array (Required; ExtensionLevel 3) A three-element array of numbers specifying
the model space position of the first anchor point in world space. It is
assumed that this is a position on the 3D model associated with this
view.
text string (Optional; ExtensionLevel 3) The name of the part (or model tree node)
associated with anchor point 1 (
the part exists and is visible. If not, the measurement is not displayed. If
omitted, no validation occurs.
Multimedia Features (Chapter 9 in PDF Reference)
9.5.6 Persistence of 3D Measurements and Markups
FIGURE 9.26
"3D Measurements and Projection
for a 3D comment note
) and end (
A3
FIGURE 9.26.
value of
Subtype
). The part name is used to verify that
A1
74
)
A4
), a units string
V
62, the
for 3D
3DC