9

VertexPaint Modifier 939
5.
Click Play to see the animated opacity in the
viewport.
To a nimate ver tex col or using UV W XForm modifier:
Yo u c a n u s e t h e U V W X F o r m m o d i f i e r i n
conjunction with a specific vertex paint layer to
modulate vertex color effects in the viewport.
1. Apply a UVW XForm modifier directly above
the VertexPaint layer (modifier) you want to
modulate.
2. Set the Channel type on the UVW XForm
modifier to Vertex color.
3. Animate the U, V, and W s pinners using
identical values. For example, animate UVW
from 1 to 0 over the length of the animation.
This will attenuate the RGB values of the
underlying vertex color results uniformly. It
will effectively dim out the vertex color result
directly below the UVW XForm modifier.
Note: Any additional vertex paint layers applied
abovetheUVWXFormmodifierinthestack
for the selected object(s) will be unaffected
Tip: Yo u c a n a d d m u l t i p l e U V W X F o r m
modifiers in your stack in this way, giving some
progressive control over modulated vertex
colors. The effect is always additive, however,
and cannot be weight-blended.
To pai nt under an ex isting lay er a nd v iew t he res ult:
1.
Select an object that has several VertexPaint
modifiers displayed in the stack.
2. In the modifier stack, activate the VertexPaint
modifier that is the layer you want to paint on.
3. Turn on t he Show E nd Result tog g le.
Now, when you paint on the layer, you will see
the p ainting t a k ing place under the top layer.
Interfa ce
Parameter rollout
Selection group
Thecontrolsinthisgroupareidenticaltothe
selection con trols found in the Selection group
(page 1–945) of the Pain tbox rollout.
Channel group
These controls specify which channel type the
vertex paint layer will affect, and which map
channelnumberyou’llpainton.
•
Vertex Color—Choose this to paint on a vertex
color layer.
•
Vertex Illum—Choose this to p aint on a vertex
illuminat ion layer.
•
Vertex Alpha—Choose this to paint on a ver tex
transparenc y layer.