9

Material Dynamic Operator 193
If it isn’t, the p articles a l l change color at the
same time.
There’s no need to turn on Show In Viewport;
theParticleAgemapdoesn’tappearinthe
viewports.
9. Render the animation, or a few representative
frames.
As each particle falls, it gradually changes color,
with the oldest particles changing first.
Tip: You needn’t actually delete the particles
tousethismethod.Thereareseveralwaysto
avoid this. You could set Life Span to a higher
number than the length of the animation, and
then, in the Particle Age map parameters, lower
the Age #2 and Age #3 settings. Or, if you’re
using a local Delete operator, you could use an
Age test (page 2–211) to mo ve the particles into
another event just b efore they’re scheduled to
be deleted. In that case, to avoid an abrupt color
change, you might want to add to subsequent
events a Material Stat ic operator (page 2–187)
with a material that uses the same final color or
map as the Particle Age map.
Interfa ce
The user interface appears in the parameters panel,
on the right side of the Particle View dialog.
Assign M aterial—When on, the operator assigns
the specified m aterial (see next parameter) to the
part icles. Default=on.
[button]—Use this button to assign a material to
the operator. Click the button and then use the
Material/Map Browser to choose the material.
Alternatively, drag the material from a Material
Editor sample slot to the button.
After you assign a material to the operator , its
name appears on the button.