8

1196 Chapter 15: Lights and Cameras
New—
Listsonlynewatmospheresoreffects.
Existing—Lists only atmospheres or effects that
have b e en already assigned to the light.
Adding an existing atmosphere or effect creates
a new atmosphere or effect whose settings are
initially identical to the previous one.
Hair Light Attr(ibutes) R ollout
Add a spot light. > Se le ct a Hai r and Fur-modified ob ject.
> Render Settings > Effects panel > Select the spot light
(in a viewpor t). > H air a nd Fur rollout > Lighting group
> Click Add Hair Properties. > Modify panel > H air Lig ht
Attr rollout
Add a spot light and a Hair and Fur-modified objec t. >
Rendering menu > Effects > Highlight the Hair and Fur
render effect. > Hair and Fur rollout > Lighting group
> Select the spot light (in a viewport). > Click Add Hair
Properties. > Modify panel > Hai r Light Attr rollout
The Hair Light Attr(ibutes) rollout appears only
for
spot lights that you’ve explicitly added to the
hair simulation vi a the
Hair and Fur render effect
(page 3–216)
. It lets you adjust properties for the
hair shadow map generated by the spot light.
Note: By default, Use all lights at render time is
on, so all spot lights in the s cene can illuminate
hair, and, if set to cast shadows, will use their
ownshadow-mapsettingsforshadowscastfrom
thehair. Usethisrollouttosethair-specific
shadow-map values that differ from those used by
the spot light for other objects in the scen e.
These settings apply only to buffer-rendered hair
(the default type, set in the Hair and Fur render
effect).
Interfa ce
Light hair—When on, the spot light can illuminate
and cast shadows from the hair.
Note: The spot light must als o be set to cast
shadows (General Parameters rollout > Shadows >
On). For best results, use the Shadow Map shadow
type.
Resolution—Setsthesize(inpixelssquared)ofthe
shadow map that’s computed for the light.
The shadow map size specifies the amount of
subdivisions for the map. The higher the value,
themoredetailedthemapwillbe,butthemore
memory is required.
Fuzz—Sets the softness of the shadow edges. See
Sample Range (page 3–1098) .
Left: Fu zz=0.0
Center: Fuzz=5.0
Right: Fuzz=10.0
The arrow points to the shadow cast by the hair on the
underlying surface.