9

520 Chapter 8: Modifiers
If supported lights exist in the scene, by default
they are used to light the hair, and the inte rnal
default omni lig ht is not used. This is b e cause
in the Hair And Fur render effect (page 3–220),
the Use All Lights At Render Time option is on
by default. Also, any supported lights set to cast
shadow-mapped shadows will cast shadows from
rendered hair.
ForHair’s“buffer”rendertoconsideronlycertain
lights, select the lig hts you’d like Hair to use, go to
theHairAndFurrendereffect,turnoffUseAll
Lights At Render Time, and then click Add Hair
Properties.Thiscausesonlythedesignatedlights
to illuminate the hair. It also adds a Hair Light Attr
rollout (page 2–1351) to each of the designated
lights. This lets you fine-tune the light’s shadow
settings for Hair.
With the “buffer” method, you can also raytrace
your scene.
Note: The other rendering methods provided
are “geometry” and “mr prim.” The “geometry”
method creates actual geometry for the rendered
hair at render time. The “mr pr im” method uses a
mental ray shader to generate hair, and is for use
only with the mental ray renderer. Use the Hair
And Fur render effect to choose the rendering
method.
Loadi ng a nd S av i ng
Hair And Fur data in your scene is automatically
saved when you save your MAX scene fi le. The
statedataforthehaircanconsumequiteabit
of space, so your scene file wil l probably be
significantly larger than it was before you applied
hair.
Animating Hair
You cannot keyframe hair styling. You can
keyframe Modify panel parameters to create
special effects such as hair growing. But to animate
hair motion, you can use the Frizz Animation
parameters or use dynamics.
To a n i m a te f r i z z , use t he Frizz Anim.,Anim.
Speed, and Frizz Anim. Dir. parameters. It’s not
necessarytokeyframethesetocreateanimation;
just set them to values other than the defaults.
To animate with dynamics, use the Dynamics
rollout (page 1–545).SeeTo generate a precomputed
dynamics simulation with Hair (page 1–545).A
gravity force is built in to Hair And Fur. You c an
add space warps to act as external forces (for
example, Wind).
See also
Hair and Fur Render Effect (page 3–220)
Hair and Fur Render Element (page 3–140)
Hair Light Attr(ibutes) Rollout (page 2–1351)
Procedures
To use the H air And Fur modifier:
This procedure lists the essential steps for grow ing
hair on an object. For more information, see other
Hair And Fur topics in this reference, and the
tutorials in 3ds Max 9 Tutorials.
1. Apply the Hair And Fur modifier to a mesh or
spline object.
The hairs appear in the viewports as brown
lines.
2. S et t he modifier para meters according to the
desired results (see Inter face (page 1–521) ).
Available settings include the number of hairs,
length, thickness, and coloring.
3. Activate a Perspect ive or C amera v iew port, and
then render the scene.
Hair cannot render in an orthogonal viewpor t.