Clock face

In this section, we’ll tackle a different kind of material. The clock face has a matte white finish that can be rendered simply using the Multiply and Screen modes.

Adding cast shadow using Multiply mode

The clock is lit with direct light from the upper-right corner, which makes the body cast a shadow over the clock face. Additionally, the hands of the clock cast their own shadows. The shadows will be painted on a Multiply layer on top of the clock face, as follows:

Figure 16.22: New Multiply layer

We will paint the shadows blue, as follows:

Figure 16.23: Casting a shadow using Multiply

Next, using a lighter blue, we can add finer details to the variations within the shadow, as follows:

Figure 16.24: Detailed shading using Multiply

In Normal mode, this shading will look as follows:

Figure 16.25: Shading viewed in Normal mode

You might be concerned that the shading...