2.1.1327 Part 1 Section 20.1.10.37, ST_PathFillMode (Path Fill Mode)

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a.   The standard does not describe how the darken, darkenLess, lighten and lightenLess enumerations are calculated.

Office implements a specific set of calculations for the darken, darkenLess, lighten and lightenLess enumeration values, as described in the following table:

Enumeration Value

Description

darken (Darken Path Fill)

This specifies that the corresponding path should have its fill blended with 40% black.

darkenLess (Darken Path Fill Less)

This specifies that the corresponding path should have its fill blended with 20% black. darkenLess does not use a scale factor of exactly 0.2. It uses 50/255 or approximately 0.1960.

lighten (Lighten Path Fill)

This specifies that the corresponding path should have its fill blended with 40% white.

lightenLess (Lighten Path Fill Less)

This specifies that the corresponding path should have its fill blended with 20% white. lightenLess does not use a scale factor of exactly 0.2. It uses 50/255 or approximately 0.1960.