8

776 Chapter 14: Character Studio
Procedure
To create a bone ani mation by ex por t ing to F B X:
1.
Create a biped and animate it using any
animation tools in 3ds Max or char acter
studio.
2. Choose File menu > Export.
3. OntheSelectFileToExportdialog,choose
FiLMBOX(*.FBX)asthefiletype,nameyour
file, and then click Save.
4. On the Export FBX file dialog, click OK to
export your animated biped.
5. Choose File menu > Import.
6. Select the file you just exported, and click Open.
7. On the Import FBX File dialog, click OK.
Your animated biped is imported back
into your scene; however, it is now a set of
animated b ones, and is no longer subject to the
restrictions of a biped system.
Several topics in the
3ds Max User Reference
describe the process for successfully importing
from and exporting to the Kaydara FiLMBOX
(FBX) file format:
•ImportingFBXFiles
•ExportingFBXFiles
• BuildingaCharactertoExporttoFBX
Motion Mapping: R etargeting
Biped Motion
One of t he more powerful features of Biped is the
ability to retarget or map the motion of any biped
onto any other biped. If you map the motion of
a biped without a tail onto a biped with a tail,
defaulttailmotionforthebipedwithatailwillbe
computed. Default motion will also be computed
when mapping the motion of a biped with fewer
links in the legs, spine, or neck onto a biped with
more links in the legs, spine, or neck. There are a
few ways to perform motion mapping. You can:
• GointoFiguremodeandchangethestructure
of your biped. When you exit Figure mode,
thenewstructureofthebipedwilladapttothe
existing animation.
• Save a BIP or STP file from one biped, and load
it onto another biped of a different structure
and size.
• Copy footsteps from one biped, and paste them
onto the footsteps of a differently structured
andscaledbiped.
ScaleStrideMode
ScaleStridemodegivesyoucontroloverwhether
or not certain aspects of motion mapping occur.
IfScaleStridemodeisactive(thedefault):
• When you exit Figure mode after loading a FIG
file or changing the biped’s leg length, pelvis
width, or height, the locations of the footsteps
will be scaled to match the leg length and pelvis
width, and gravity w i ll be changed to match the
new he ight of the biped.
•WhenyouloadaBIPorSTPfile,thelocations
ofthefootstepsinthefilewillbescaledto
matchtheleglengthandpelviswidthofthe
existing biped. Gravity will be adjusted to be
proportional to the gravity stored in the file. (A
motion stored in a BIP or STP file has a gravity
value ass ociated with it.)
• When you paste footsteps copied from one
biped onto another biped, the locations of
the footsteps in the buffer wil l be scaled to
matchtheleglengthandpelviswidthofthe
existing biped. Gravity will be adjusted to be
proportional to the gravity stored in the file. (A
motion stored in a BIP or STP file has a gravity
value ass ociated with it.)
IfScaleStridemodeisnotactive,nocomputations
will be performed in any of the above cases. Then