Game Development Reference

In-Depth Information

The Arithmetic Effect

The Arithmetic effect allows you to combine channels of a

layer with itself using blend modes. Hopefully, this defi nition

makes at least some sense. It's probably better than Adobe's own

defi nition of the Arithmetic effect, which you can fi nd by clicking

the About button for effects at the top of the effect in the Effect

Controls panel. (Fig. 5.10)

Open the Arithmetic.aep project in the Chapter 5 folder of the

exercise fi les. Apply the Arithmetic effect to the orb layer (Fig. 5.11).

In the Arithmetic effect, we have three color parameters, one

for each color channel. We can increase the amount of color

from any of the three channels, and blend that effect back onto

Figure 5.10
Oh, thanks. Now I

get it.

Figure 5.11
The Arithmetic.aep

project.