8
642 Chapter 20: Managing Scenes and Projects
Allscenesshouldhaveatleastonecamera,so
you can control how the scene initially renders.
Add more c ameras to the scene than you m ight
ordinarily use, so the viewer can switch between
cameras if his VRML97 browser allows it. This
lets you set up your scene with pre-installed
vantage points. Otherwise, if the world is very
large, it can overpower the viewer’s system and
make navigation difficult. Some browsers animate
camera moves, so the extra c am era s can m ake
viewingthescenemorepleasant.
Initial Navigation I nfo
Specifies the
Navigation Info helper object (page
3–648)
to use when the world loads in t he browser.
Initial Background
Specifies the
Background helper object (page
3–654)
to use when the world loads in t he browser.
Initial Fog
Specifies the
Fog helper object (page 3–649)
to use
when the world loads in the browser.
Digits of Precision
Sets the number of decimal points used for
calculating dimensions. The default of 4 is usually
sufficient. Set this number greater than 4 if parts
of your world were created 100,000 units away
from the center of the scene. Setting the va lue to 3
reduces the file size.
Show Progress Bar
Gives you the option to view a progress bar as the
scene is exported.
Vertex Color Source group
Lets you choose the source for the vertex color
when Color Per Vertex is turned on.
Use M a x ’ s —Exports the current vertex color of the
object defined in the scene.
Calcul at e on E xp ort—Calculates the diffuse color at
the vertices during export, based on the current
lighting and the objects’ materials.
Bitmap URL Prefix group
Lets you specify a URL prefix for bitmaps assigned
to objects in the scene. You must keep all your
texture bitmaps in either the same directory as the
.w rl
file or in one other location, which you specify
here. If your maps are stored in other locations,
youwillhavetomanuallysearchforthemapinthe
.w rl
and change its location. Not all browsers will
display error messages if the maps aren’t found on
the WWW server.
Use Pr e fi x —Enables the prefix mechanism. If this
box is turned off, image maps must be in the same
location as the
.wrl
file.
Pref ix —Adds the prefix you enter here to t he
names of a ll assigned bitmaps. The name can be
a full URL (beginning with HT TP), or it can be a
relative path (a subdirectory of the location of the
VRML97 file). For example, if you enter "Maps"
for the prefix, when the browser opens a VRML97
file that has a texture map assigned to it, it will
look for the subdirectory "Maps." “Maps” must
be a directory that is directly under the directory
where the VRML97 file resides.
Use forward slashes (not backslashes) to enter
longer paths. For example,
3dsMAX/maps
.
Sample Rate
Displays a dialog that lets you specify sample rates
for controller-based and coordinate-interpolated
animation, as well as the Flip-Book output rates.
Setting sample rates lets you tr ade off between
animation fidelity and file size. The default values
give good results in most cases. For the greatest