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CTFontGetAdvancesForGlyphs(_:_:_:_:_:)

Calculates the advances for an array of glyphs and returns the summed advance.

Declaration

func CTFontGetAdvancesForGlyphs(_ font: CTFont, _ orientation: CTFontOrientation, _ glyphs: UnsafePointer<CGGlyph>, _ advances: UnsafeMutablePointer<CGSize>?, _ count: CFIndex) -> Double

Parameters

  • font:

    The font reference.

  • orientation:

    The intended drawing orientation of the glyphs. Used to determined which glyph metrics to return.

  • glyphs:

    An array of count number of glyphs.

  • advances:

    An array of count number of Cgsize objects to receive the computed glyph advances. If NULL, only the overall advance is calculated.

  • count:

    The capacity of the glyphs and advances buffers.

Return Value

The summed glyph advance of an array of glyphs.

Discussion

Individual glyph advances are passed back via the advances parameter. These are the ideal metrics for each glyph scaled and transformed in font space.

See Also

Getting Glyph Data