SECTION 9.5
819
3D Artwork
SCHEME
DESCRIPTION
CAD
Three grey infinite lights and one light attached to the camera, no
ambient term
Light 1
Color: < 0.72, 0.72, 0.81 > Direction: < 0.0, 0.0, 0.0 >
Light 2
Color: < 0.2, 0.2, 0.2 >
Direction: < -2.0, -1.5, -0.5 >
Light 3
Color: < 0.32, 0.32, 0.32 > Direction: < 2.0, 1.1, -2.5 >
Light 4
Color: < 0.36, 0.36, 0.36 > Direction: < 0.04, 0.01, 2.0 >
Single infinite light attached to the camera, low ambient term
Light 1
Color: < 0.8, 0.8, 0.9 >
Direction: < 0.0, 0.0, 0.0 >
Ambient
Color: < 0.1, 0.1, 0.1 >
Headlamp
Note:
If a lighting scheme style is encountered other than those described in Table
allows future documents using new lighting schemes to behave consistently with fu-
ture documents using new 3D view constructs. That is, the expected behavior is for
the viewer application to ignore unrecognized lighting styles and 3D view con-
structs.
3D Cross Section Dictionaries
A
3D cross section dictionary
(PDF 1.7) specifies how a portion of the 3D artwork
is clipped for the purpose of showing artwork cross sections. The
SA
entry of a
3D view can specify multiple 3D cross section dictionaries.
Cross sections enable viewer applications to display otherwise hidden parts of the
artwork. They also allow users to comment on cross sections, using markup an-
notations. For example, markup annotations can be used apply markup annota-
tions to a cross section or to measure distances in a cross section. If multiple cross
sections are specified for a view, the markup annotations in the view apply to all
cross sections in the view.
TABLE 9.46 Entries in a 3D cross section dictionary
KEY
TYPE
VALUE
Type
name
(Optional)
The type of PDF object that this dictionary describes; if present, must be
3DCrossSection
for a 3D cross section dictionary.