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1132 Chapter 14: character studio
Link—Tur n on to selec t li nks in the v iew p or t s
and edit the selected link’s envelope parameters.
Forexample,youmightturnonLink,selecta
biceps link,
Ct rl +click to add the opposite bicep
to the selection, then edit envelope parameters for
both lin ks at the same ti me.
Cross Section—Tur n on to edit enve lop e cross
sections, changing the envelope’s shape and thus
its area of influence.
Forexample,youmightturnonCrossSection,
select a cross section on the inner or outer
boundary of an envelope, and then move or scale
it. You might Non-Uniform Scale the cross section
of a collar envelope so it avoids vertices in the chest
area.
Contro l P oi n t—Turn on to edit the control
points on a cross section.
Forexample,youmightturnonControlPoint,
select a point on a cross section of an envelope,
and move the point to change the envelope’s shape
and area of influence.
Pr eviou s a nd Next—Click to move to
the next or previous link, cross section, or control
point, depending on which selection level is active.
Active Blending group
Deformable—When on, enables a deformable
envelope for the selected links. Default=on.
By default, deformable envelopes are shown in red.
Rigid—When on, enables a rigid envelope for the
selected links. Default=off.
By default, rigid envelopes are shown in green.
Impor tant: You can have both a deformable and a rigid
envelope turned on for the same link. Normally, you use
one or the other. By non-uniform scaling the rigid and
deformable envelopes for one link, you can position
oneenvelopeontopoftheother. Forexample,you
could control the shoulder with a rigid envelope and the
armpit with a deformable envelope. Both envelopes can
also be turned off for a link.
Partia l Blending—
Turns on p artial blending for t he
selected links. Leave either a deformable or r igid
envelope on, and then turn on Partial Blending.
Physique calculates the weig hts of each link on
a given vertex. If Partial Blending is off,andthe
total weight is less than 1, Physique normalizes
the combined weight to 1. If Partial Blending is
on, the weig hts are allowed to remain at a value of
less than 1. The remainder is filled in by the root
node, the equivalent of no influence. See Partial
Blending and Weight Assignments (page 2–1092)
for a detailed explanation of how the program
calculates these values.