Adobe 12020596 Supplement Manual page 73

Adobe Acrobat SDK
Adobe® Supplement to the ISO 32000
KEY
SC
R
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The parameters for defining the radial measurement for a circle are shown here.
The circle being measured is defined by two points lying on the annotation plane, a circle center
point on the circle
arrow line orientation, and the extension line. The arrow line is drawn from the text position (
intersection point between the circle and a line from text position to the circle center. The extension line
will be drawn from the text position (
extension line is defined by the
of the extension line. Note that the vector
normal. The text's up direction is defined as the cross product of the annotation plane normal and the text
X-axis, in the direction defined by the
The parameters for defining a radial dimension for an arc are very similar, as shown in
TABLE 9.39e Additional entries in a 3D measurement/markup dictionary
for a 3D radial dimension measurement
TYPE VALUE
boolean (Optional; ExtensionLevel 3) A flag that indicates whether the underlying
circle, or arc, is shown or not. If
with a radial dimension is displayed.
The default is
Note:
boolean (Optional; ExtensionLevel 3) A flag that indicates whether the
measurement value is for a radius or a diameter. If
measurement value associated with a radial measurement represents a
radius, as opposed to a diameter value.
The default is
dictionary (Optional; ExtensionLevel 3) A comment reference is an indirect reference
to a projection annotation that may be associated with this 3D
measurement. See
page
. For radial measurement, the text position (
A2
parameter. The left center of measure value string will begin at the end
EL
9.5.6 Persistence of 3D Measurements and Markups
, not to show the circle.
false
The circle or arc is redrawn in the markup color (
, the measurement value represents a radius.
true
"3D Measurements and Projection Annotations" on
75.
FIGURE 9.25
) in the direction of the text string's X-axis (
TP
is expected to be orthogonal with the annotation plane
TX
parameter.
TY
Multimedia Features (Chapter 9 in PDF Reference)
, the underlying circle associated
true
true
) controls the text string position, the
TP
TX
73
).
C
, the
, and a
A1
) to the
TP
). The length of the
FIGURE 9.26.