Sets the location for the first glyph of the given range.
- iOS 7.0+
- macOS 10.0+
- tvOS 9.0+
The location to which the first glyph is set, relative to the origin of the glyph’s line fragment origin.
The glyphs whose location is set.
Setting the location for a glyph range implies that its first glyph is not nominally spaced with respect to the previous glyph. In the course of layout, all glyphs should end up being included in a range passed to this method, but only glyphs that start a new nominal range should be at the start of such ranges. The first glyph in a line fragment should always start a new nominal range. Glyph locations are given relative to their line fragment rectangle's origin.
Before setting the location for a glyph range, you must specify the text container with
set and the line fragment rectangle with
This method is used by the layout mechanism and should be invoked only during typesetting, in almost all cases only by the typesetter. For example, a custom typesetter might invoke it.