Game Development Reference
In-Depth Information
Unless you have a specifi c purpose in using the Arithmetic
effect, the results of your experimentation will most likely seem
psychedelic. In such a case, I would increase the green and blue
values a little and take the Operator value back to its default value
of Xor (short for “eXclusive or”, a mathematical formula). The
results then are just plainly weird (Fig. 5.14).
Figure 5.14 The results of
increasing the color on all
channels and using the Xor
operator.
The Blend Effect
The Blend effect is like a really weak version of the layer blend
modes in the Timeline panel. There are only fi ve of them here,
and one of them is Crossfade, which mainly blends two lay-
ers together using opacity. There are two benefi ts obtained with
this effect. The fi rst is that you can animate the change of blend
mode. It doesn't smoothly interpolate from one to another, as it
can only create Hold keyframes. But it's possible to animate them
using the Blend effect, while this isn't possible in the Timeline
panel (although you could also split the layer and change the
blend mode to create the illusion of animated blend modes). The
other benefi t is that you can use the Blend effect to mix any two
layers in the Timeline panel, even if they aren't next to each other
in terms of the layer stacking order.
Apply the effect and choose the layer you wish to blend it with
from the Blend With Layer drop down. Then choose the blend
mode from the Mode drop down. To view your results, you will
need to reduce the value of Blend With Original (Fig. 5.15).
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