8

704 Chapter 8: Modifiers
To apply a Link ed XFor m modifier a t a Sub-Object
level:
1.
Choose an Editable Mesh or an object to which
a Mesh Select modifier has been applied.
2. Turn on the Vertex sub-object level and select
some vertices on the object.
3. Apply a Linked XForm modifier.
4. On the Parameter’s rollout, click Pick Control
Object. When animating, do this at frame 0.
5. Select another objec t that you want to control
the sub-object selection.
This completes the link. The name of the
cont rol object appears on the Parameters
rollout.
6. Move the control object and see how the
vertices are affected.
Inter face
Co ntrol Object—Object that the vertices a re linked
to. When transformed, the vertices follow.
Pick Control Object—Click this button, and then
selecttheobjectthatyouwanttobethecontrol
object.
Back Transform—Allows an object with a Linked
XForm modifie r to be linked to a Control Object.
Normally, moving the Control Object causes the
linked object to move twice as much as it should,
once with the Control Object and once with the
link. When the switch is turned on, any transforms
totheControlObjectareonlyappliedtothe
linked object once. This switch is similar to the
’Back Transform Vertices’ switch of the
Skin (page
1–781)
modifier.
LS Mesh Modifier
Select a Lightscape m esh object. > Modify panel >
Modifier List > LS M esh
The LS Mesh modifier refines a Lightscape mesh
object (page 3–613)
.
When a Lightscape scene is imported into 3ds Max,
themeshproducedbyLightscapedoesn’tcontain
the refinements that Lightscape introduced
to improve the lighting. This information is
kept and used by the
Lightscape material (page
2–1413)
while rendering. This modifier will add
these refinements to the Lightscape mesh. In
conjunction with the
LS Colors modifier (p age
1–531)
, t his modifier can be used to produce
meshes suitable for game engines.
The refinement stored in a Li ghtscape mesh is
hierarchical. When a polygon is refined, it is
broken into four smaller polygons. These polygons
canthenberefinedfurther. Apolygoninthe
refinement has a depth from the original polygon,
which is the number of refinements needed to
get from the orig inal polygon to the polygon in
question.
The modifier allows you to reduce the number
of polygons in the result by limiting the depth to
which the modifier w ill descend, or by limiting the
size of polygons that will be refined.
You can apply the LS Mesh modifier to a Face
sub-object select ion of a Lightscape mesh object.
In this case, only the selected faces will be refined.