Game Development Reference
exact angle of blur. Take the Direction value to 40 degrees, which
is something other blur effects can't do (Fig. 4.38).
This effect would look much better if it were underneath a copy
of this layer that did not have the effect applied to it. Most of the
time when I use the Directional Blur effect, I use it on copies of a
layer that are beneath it in the layer stack in the Timeline panel.
So, I'll duplicate this layer by selecting it in the Timeline panel
and pressing Ctrl+D(Win)/Cmd+D(Mac). Then, I will remove
(delete) the effect from the copy on top. Then, I might change the
angle to about 85, so it looks like it's horizontal, but slightly tilted
upwards on the right-hand side. Then, I'll move the blurred layer
to the left a little bit. Finally, I'll reduce the Opacity value on the
blurred rocket layer to about 60%. All these steps create the illu-
sion that the rocket is moving (Fig. 4.39).
Figure 4.38 The Directional
Blur options and results. Notice
that the notch on the Direction
controller displays the angle of
Figure 4.39 The result of
duplicating the rocket layer and
adjusting the blurry rocket on the