Struct Zone

pub struct Zone<'a> {
    pub unscaled: &'a [Point<i32>],
    pub original: &'a mut [Point<F26Dot6>],
    pub points: &'a mut [Point<F26Dot6>],
    pub flags: &'a mut [PointFlags],
    pub contours: &'a [u16],
}

Glyph zone for TrueType hinting.

See https://learn.microsoft.com/en-us/typography/opentype/spec/tt_instructing_glyphs#zones

Fields

unscaled: &'a [Point<i32>]

Outline points prior to applying scale.

original: &'a mut [Point<F26Dot6>]

Copy of the outline points after applying scale.

points: &'a mut [Point<F26Dot6>]

Scaled outline points.

flags: &'a mut [PointFlags]

contours: &'a [u16]

Implementations

impl<'a> Zone<'a>

pub fn new( unscaled: &'a [Point<i32>], original: &'a mut [Point<F26Dot6>], points: &'a mut [Point<F26Dot6>], flags: &'a mut [PointFlags], contours: &'a [u16], ) -> Self

Creates a new hinting zone.

pub fn point(&self, index: usize) -> Result<Point<F26Dot6>, HintErrorKind>

pub fn point_mut( &mut self, index: usize, ) -> Result<&mut Point<F26Dot6>, HintErrorKind>

pub fn original(&self, index: usize) -> Result<Point<F26Dot6>, HintErrorKind>

pub fn original_mut( &mut self, index: usize, ) -> Result<&mut Point<F26Dot6>, HintErrorKind>

pub fn unscaled(&self, index: usize) -> Point<i32>

pub fn contour(&self, index: usize) -> Result<u16, HintErrorKind>

pub fn touch( &mut self, index: usize, axis: CoordAxis, ) -> Result<(), HintErrorKind>

pub fn untouch( &mut self, index: usize, axis: CoordAxis, ) -> Result<(), HintErrorKind>

pub fn is_touched( &self, index: usize, axis: CoordAxis, ) -> Result<bool, HintErrorKind>

pub fn flip_on_curve(&mut self, index: usize) -> Result<(), HintErrorKind>

pub fn set_on_curve( &mut self, start: usize, end: usize, on: bool, ) -> Result<(), HintErrorKind>

pub fn iup(&mut self, axis: CoordAxis) -> Result<(), HintErrorKind>

Interpolate untouched points.

Based on https://gitlab.freedesktop.org/freetype/freetype/-/blob/57617782464411201ce7bbc93b086c1b4d7d84a5/src/truetype/ttinterp.c#L6391

fn iup_shift( &mut self, axis: CoordAxis, p1: usize, p2: usize, p: usize, ) -> Result<(), HintErrorKind>

Shift the range of points p1..=p2 based on the delta given by the reference point p.

Based on https://gitlab.freedesktop.org/freetype/freetype/-/blob/57617782464411201ce7bbc93b086c1b4d7d84a5/src/truetype/ttinterp.c#L6262

fn iup_interpolate( &mut self, axis: CoordAxis, p1: usize, p2: usize, ref1: usize, ref2: usize, ) -> Result<(), HintErrorKind>

Interpolate the range of points p1..=p2 based on the deltas given by the two reference points.

Based on https://gitlab.freedesktop.org/freetype/freetype/-/blob/57617782464411201ce7bbc93b086c1b4d7d84a5/src/truetype/ttinterp.c#L6284

Trait Implementations

impl<'a> Debug for Zone<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Default for Zone<'a>

fn default() -> Zone<'a>

Returns the “default value” for a type.