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1622 Chapter 16: Material Editor, Materials, and Maps
withoutaffectingtheDiffusecolors,adjustthis
value, w hich changes the amount of bumpiness
w ithout affecting the map’s use in other material
components.
Color Map group
At the b ottom of the Output rollout, the Color
Map group is inactive un til you turn on Enable
Color Map.
The Color Map g raph lets you adjust the tonal
range of an image. The point at 1,1 controls
high lights, the point at 0.5,0.5 controls midtones,
and the point at 0,0 controls shadows.
You adjust the shape of the graph by adding poin ts
tothelineandmovingorscalingthem.Youcan
add Corner, Bezier-Smooth, or Bezier-Corner
points. When a move or scale option is active,
points can be selected much like objects in a
viewport, by clicking a point, dragging a region
around one or more points, and holding down
Ctrl to add or subtract from the selection.
When you select an individual point, its exact
coordinates are displayed in the two fields
below the graph at the lower left. You can enter
values directly in these fields, but t he values are
automatically constrained as they are when you
manually move or scale a point.
You can zoom in to the graph to make detailed
adjustments. As you zoom in, the g raph updates to
show decimal measurements along the left vertical
axis. You can pan anywhere on the g raph with the
horizont a l and vertical scroll bars, use a button
option, or the middle mouse button. Points can be
deleted, and you can reset the graph to its default
at any time.
RGB/Mono—Specifie s a map curve to either
filter the RGB channels separately (RGB) or in
combination (Mono).
Co py CurvePoints—When turned on, points added
toaMonographarecopiedwhenyouswitchto
an RGB graph. If you start with an RGB g raph,
the points are copied to a Mono graph. You can
animate the control points but not the Bezier
handles.
Impor tant: When Copy CurvePoints is o n, animation
created in Mono mode is carried over to RGB mode and
you can switch channe ls. The reverse doesn’t work.
The following controls affect the points on the
graph:
Move flyout
Moves a selected point in any direction,
limited by the unselected points on either side.
Constrains movement to t he horizontal.
Constr ains movement to the vertical.
On a Bezier smooth point, you can move the point
or either han dle.
Scale Point—Changes the output amount
of control points while maintaining their relative
position. On a Bezier corner point, this control
is effectively the same as a vert ical move. On a