CHAPTER 9
832
Multimedia Features
rendered with the appearance opaque (
/O 1
) and visible (
/V true
).
FIGURE 9.15
Rendering of the 3D artwork using View2 (the cone is hidden and the sphere is semi-transparent)
used in Figure 9.14. These nodes have the following display characteristics:
•
The node named
Sphere
is partially transparent (
/O 0.5
) and visible (
/V true
)
•
The node named
Cone is
opaque (
/O 1
) and invisible (
/V false
)
•
The node named
Cube
is opaque (
/O 1
) and visible (
/V true
)
9.5.4 Coordinate Systems for 3D
3D artwork is a collection of objects whose positions and geometry are specified
using three-dimensional coordinates. Section 4.2, “Coordinate Systems,” discuss-
es the concepts of two-dimensional coordinate systems, their geometry and
transformations. This section extends those concepts to include the third dimen-
sion.