(Wow, that was lame!) But if you look at an object
and see a reflection, its contents aren??™t determined by the object itself but by its surroundings,
right?
In a 3D setting, surface reflections often include other models within a scene, and those
reflections typically are created via a process called ray tracing,which generates reflections
and shadows based on the location of objects and light sources within a scene. Reflections
can also include images of objects that don??™t exist as models in a scene; reflections of ???offstage???
objects or backdrops are created as 2D images, which you then overlay onto the
reflective surface, a technique known as reflection mapping.
The Reflection attribute in the Basic tab controls
how reflective a given surface will be; settings
in the Environment tab (Figure 3.14)
control what appears in reflections generated
by the surface. When you??™re dealing with a
transparent surface, the tab provides comparable
control over how the surface refracts objects
placed behind it in a scene.
On the Environment tab, you can assign the
following:
?—? Reflection Options. The type of reflection
applied to a surface: spherical, ray
trace, or backdrop
?—? Reflection Map.
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