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576 Chapter 20: Managing Scenes and Projects
1.0, the full 3ds Max ambient light is added into
the radiosity calculations. Default=0.0.
Daylight—Determines whether you want natural
daylight to be used in the ca lculation. Default=on.
Ex ter ior Scene—Usedforexteriordaylight
simulations. Default=off.
Motion Analysis Files
(HTR/HTR2, TRC)
Impor ting HTR/HTR2 Files
File menu > Import > Motion Analysis HTR File (*.HTR)
The Motion Analysis HTR (Hierarchical
Translation-Rotation) motion capture file format
is an alternative to the BVH (page 3–915) format
because it provides flexibilit y in data types
and ordering. It also has a complete base pose
specification, which consists of indicating the
starting point for both rotations and translations.
The stored data is grouped by segments; all
motions from the first segment are read, then
those from the next seg ment, and s o on.
The HTR format contains four sections: Header,
Segment Names & Hierarchy, Base Position, and
the motion data section.
Note: All sec tion titles are displayed between
square brackets ([]).
Note: Comments within the HTR file are denoted
by a hash mark (#).
The header section contains global parameter
information:
•filetype
•datatype
•fileversion
•numberofsegments
•numberofframes
• data frame rate
• Euler rotation order
• calibration units
•rotationunits
•globalaxisofgravity
•bonelengthaxis
•scalefactor
HTR2 is nearly identical to HTR, except that
the data from the motion section is organized
differently in order to better suit a streaming data
input (a sample-major ordering is used to present
the motion information).
On import , 3ds Max constructs a FK hiera rchy
rig f rom the incoming data. The resulting bone
skeleton is linked to a dummy object named after
the HTR file.
Interfa ce
Skeleton group
Cr e a te—Choose this option to build a new bone
skeleton from the incoming data. Default=on.
Segment Size—Set this value to modify the scale
factor for the weig ht and height of all bones f rom