8

830 Chapter 8: Modifiers
space coordinates. The object space mod ifier
limitsthesizeinobjectspacecoordinates.
Note: Typically, the Subdivide modifier is applied
automatically to objects in the scene when
a radiosity solution is processed. Meshing
parameters can be set on a global basis in
the
radiosity control panel (page 3–60) or for
individual objects in the
Object Prop erties dialog
(page 1–111)
.
Tip: When you are satisfied with the subdivision
settings on one object, you can drag the modifier
to other objects to propagate it.
Inter face
Size—Controlsthesizeoftrianglesinthe
subdivided mesh. The length of the longest edge
of any tr iang le w il l not exceed the square root of
2 tim es the size in the Subdivide m odifier. The
square root of 2 factor is used, so that a square
whoseedgesarethesizewillnotbesubdivided.
Update group
The radio buttons in the Update group control
when the meshing is done.
Automatic—Updates immediately when changes
aremadetothecontrolsorthemesh.
Render—Updates only for rendering.
Manual—Updates only when Update Now is
pressed. Subdivision can be interrupted u sing
the ESC key. If the subdivision is interrupted the
Update mode is changed to Manual.
Update Now—Updates the mesh when Manual is
turned on.
Display S ubdivision—Controls w hether al l of the
triang les are visible, or only the edges where face
properties are changing. Al lows you to reduce the
visible triangles in the scene if it appears cluttered.
Substitute Modifier
Make a selection. > Modify panel > Modifier List >
Object-Space Modifiers > Substitute
Typically, designers use two-dimensional shapes
to represent objects, such as furniture, in their
AutoCAD designs. However, when they link
their
DWG files (page 3–1024) into 3ds Max for
visualization, they want to see how the objects wil l
look in their design.
Top view of 2D symbols used to represent 3D objects
The Substitute modifier lets you quickly replace
one or more objects with another in the viewports
or at render time. The substitute object can
be instanced from the current scene or can be
referenced from an external file.