Corel Painter X3 Win/Mac, EDU, EN User's Guide download pdf (Page 493)

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470 Corel Painter X3 Getting Started Guide

You can also apply negative depth, which allows you to use a brushstroke to excavate,

or dig into the paint.

The Negative depth option forces impasto to excavate (left). Normally, impasto

raises ridges and bumps (right).

In addition, you can specify how Impasto interacts with previously applied

brushstrokes. For example, you can adjust the Plow setting so when a brushstroke with

a high Plow value encounters another Impasto brushstroke, it displaces the depth of the

existing brushstroke. In essence, the brushstroke “plows” through existing

brushstrokes. This technique produces realistic effects.

The effects of high (left) and low (right) Plow settings.

You can apply one of the nine depth Expression settings to control the flow of depth

based on stylus pressure, velocity, or bearing. You can also invert the depth Expression

setting to create a different effect. For example, if you set depth Expression to

Pressure and the Invert option is enabled, less depth is applied as you press harder, just

as it would if you were using a real brush. For more information, see “Expression

settings” on page 317.

You can also adjust the Min setting to specify the range of variability that you want the

expression to apply. The Min Depth setting represents a percentage of the Depth

setting and it must be linked to an expression to have an effect. For example, if you

choose the Pressure expression on the Impasto panel, set the Depth slider to 20%,

and then set the Min Depth slider to 50%, the depth will vary from 10% to 20% every

time you apply pressure to the stylus.

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Corel Painter X3 Win/Mac, EDU, EN User's Guide Page 493

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