8

524 Chapter 8: Modifiers
• Polygon:Hairconsiderseachpolygoninthe
collision object(s). This is the slowest method,
but the most accurate.
Use Gr owth Obj ect—When on, hair collides with
the growth (mesh) object.
[collision objects list]—Use the Add, Replace, and
Delete buttons to m anage the list of scene objects
with which hair should collide.
External Forces group
This group lets you specify
space warps (page
2–51)
that will affect the hair during the dynamics
simulation. For example, you can add a Wind
spacewarptocausethehairtobeblownbya
breeze. The Hair dy namics system already has a
gravity force, so it’s not necessary to add one.
Use the Add, Replace, and Delete buttons to
managethelistofspacewarpsthatshouldaffect
the hair.
Display rollout
These settings let you control how Hair displays in
the viewports. By default, Hair displays a small
percentage of the hairs as red lines. Alternatively,
you c an display the hairs a s geometry, and you can
also opt to display the guides.
Display Guides—Whenon,Hairdisplaysguidesin
the view ports, using the color shown in the color
swatch. Default=off.
To change the color used to display guides, click
the color swatch.
Note: Guides do not reflect settings made to the
hair, such as Frizz. Use the Guides display mainly
to determine where hair will appear on the growth
object. Hair places one guide at each vertex on the
grow th surface.
Display H air s—When on, Hair displays hairs in
the view ports, using the color shown in the color
swatch. Default=on.
To change the color used to display hairs, click the
color swatch.
Note: When hair is displayed as geometry (see
below), the color setting is ignored.
Percentage—Thepercentageoftotalhairs
displayed in the viewports. Lower this value to
improvereal-timeperformanceintheviewports.
Max Hair s—The max imum number of hairs
displayed in the viewports, regardless of the
Percentage value
As Geometry—When on, displays the hairs in the
viewports as the actual geometry to be rendered,
rather than the default lines. Default=off.
Style Dialog (Hair)
Select an object with Hair and Fur m o difier applied >
Tools rollout > Style Hair
The Style dialog for the Hair and Fur modifier
(page 1–506)
lets you work with hair guides
interactively, using the mouse to mod ify the hair in
a variety of ways. The dialog interface comprises a
main window where you interact with the hair plus
three axis buttons on the left side and a to olbar
acrossthebottom.Thewindowshowsthegrowth