8

Preview Renderings 163
• Red—Can be Left or Right. Default=Rig ht.
•
Green—Can be Up or Dow n. Default=Dow n.
Orientation: World, Screen, and LocalXYZ
For World, Screen, and LocalXYZ red indicates
that the normals are pointed either towards a
positive or negative X value while the green
indicates that the normals are pointed either
towards a positive or negative Y value.
As an example, if you use World mode with Red
set to —X and Green set to —Y, areas that are
red in your normal map would indicate that the
normals were facing towards —X and areas that
were green would indicate that your normals were
facing towards —Y.
The following are the possible values for World,
Screen, and Loca l XYZ methods:
•
Red—Can be — X or +X. Default=+X.
•
Green—Can be —Y or +Y. Default=+Y.
Height Map group
Min Height—Sets a minimum height for displaced
normals. Default=0.0 units.
Max Height—Sets a maximum height for displaced
normals. Default=10.0 units.
Mi n and M ax Height ey edropper —Enable the
eyedropper to pick the minimum or maximum
height for the displaced normals by picking or
dragging in a viewp ort. With the button e nabled,
click at the desired height. You can also drag this
value until the desired result is achieved. The
minimum or maximum height value is updated
based on y our selection.
B uff er min Hei gh t—After you render a normal
bump projection, this value is set to the
minimum distance that a projection ray travelled.
Default=0.0.
Buffer max Height—Af ter you render a normal
bump projection, this value is set to the
maximum distance that a projection ray travelled.
Default=0.0.
IfyouwanttousetheHeightMaptextureelement,
you can render a normal bump map to obtain
theBuffervalues,andthensetMinHeightand
Max Height accordingly, in order to get the
best-looking possible Height Map.
Pr ev iew R enderi ngs
Apreviewisan AVI file (p age 3–658) that can
help you preview the animation in your scene.
The preview uses lighting but not materials, so it
renders much more quickly than a fully rendered
animation.
Thepreviewcommandsareonthe
Animation
menu (page 3–729)
.
Make Preview (p age 3–163)
Make Preview Dialog (page 3–164)
View Preview (page 3–165)
Rename Preview (page 3–165)
Mak e Preview
Animation menu > Make Preview
Make Preview displays the Make Preview dialog
(page 3–164)
, enabling you to create an AV I ( p a g e
3–658)
file or custom file type preview of the
animation in the current viewport. You can also
render a preview to a specified device.
When the preview is complete, the software starts
the Media Player with the preview
_scene.av i file
ready to play. (If you don’t want the Media Player