Mutator Terms And Themes

This is the glyph that appears in the Outline and Glyph Ramp windows. The Tuples and Deltas windows are also coordinated to show relevant information about the current glyph. The current glyph can be changed in following ways:

• typing a character while in the Outline window
• using the arrow keys while in the Outline window (left arrow = previous glyph, right arrow = next glyph)
• double-click a glyph in the Palette window
• choose "Glyph #..." from the menu (cmd-h)
• by using the Toolbar navigation buttons
  • Previous Glyph
  • Glyph Index
  • Next Glyph

Current Variation

The Outline, Deltas, and Kerning windows are all coordinated to show information about the glyph or font at the current variation coordinate. This coordinate can be set in the following ways:

• choosing "Select Coordinate..." (Command-K)
• choosing an axis extreme from the Axis menu (Command-1, Command-2, etc.)
• double-clicking on a tuple in the Tuples window
• double-clicking a glyph in the Glyph Ramp window

Variation Coordinate

This specifies the values for each of the font's variation axes. In this form, the value for each axis ranges from its specified minimum to maximum, which are defined in the Axes window.

Normalized Coordinate

This is another way to specify the values for each variation axis. In this form, the value for each axis ranges from &endash;1 to +1, where

• - 1 corresponds to the axis' minimum value
• 0 corresponds to the axis' default value
• + 1 corresponds to the axis' maximum value.

Instance

An instance is a font style which is defined by the Variation data in the font. For every variation axis in the font, an instance is assigned a value between the Min and Max setting for that variation. Instances are also assigned names. (See Instances window)

Example: The Skia variation font has 10 instances named : Black, Extended, Condensed, Light, Regular, Black Extended, Light Extended, Black Condensed, Light Condensed and Bold.

The Regular instance has the following variation settings (standard)

• wght = 1.0
• wdth = 1.0

This instance uses the standard font weight and the standard font width.

The Light Extended instance has the following variation settings

• wght = 0.48
• wdth = 1.3

This instance uses a lighter weight than standard and a wider width i.e. glyphs have narrower lines but are wider overall.

• Note: Skia has 2 Variation Axes: Weight (wght) and Width (wdth)

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