Struct Unscaled 

pub struct Unscaled;

Leaves coordinates in font units.

Variations still apply, and composite components are still transformed and placed, but nothing is scaled or rounded to a pixel grid. This is what an autohinter wants: the outline as the designer drew it, at the requested location in variation space.

The arithmetic matches Scale26Dot6 at no size, without the round trip through 26.6 that getting font units back out would otherwise need.

Trait Implementations

impl Clone for Unscaled

fn clone(&self) -> Unscaled

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Unscaled

impl Debug for Unscaled

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

Formats the value using the given formatter.

impl Default for Unscaled

fn default() -> Unscaled

Returns the “default value” for a type.

impl Scale for Unscaled

const NEEDS_UNSCALED: bool = false

True if the scale keeps a parallel copy of the points in font units, which hinting needs and which sparse delta interpolation uses as its reference coordinates.

type Coord = i32

Coordinate type of the loaded outline.

type Delta = Fixed

Accumulator type for variation deltas.

fn is_scaled(&self) -> bool

True if a size was supplied. When false the outline comes back in font units, expressed in Self::Coord.

fn phantom_from_font_units(&self, value: i32) -> i32

Converts a font unit value into the representation phantom points use before they are scaled.

fn coord_to_hinting_raw(&self, value: i32) -> i32

Reinterprets an output coordinate as the integer a hinter’s font unit buffer holds.

fn scale_phantom(&self, point: Point<i32>) -> Point<i32>

Scales a phantom point that still holds font units.

fn add_phantom_delta( &self, point: Point<i32>, delta: Point<Fixed>, ) -> Point<i32>

Adds a composite glyph’s phantom point delta.

fn round_phantom(&self, point: Point<i32>) -> Point<i32>

Rounds a phantom point, which FreeType does before hinting.

fn load_empty_phantom( &self, phantom: &mut [Point<i32>; 4], deltas: Option<[Point<Fixed>; 4]>, )

Sets the phantom points of a glyph with no outline.

fn load_simple_points( &self, pass: SimplePass<'_, '_, Self>, ) -> Result<[Point<i32>; 4], Error>

Reads a simple glyph’s points, applies variation deltas, appends the phantom points and writes the scaled result.

fn transform_points(&self, points: &mut [Point<i32>], transform: &Transform)

Applies a component’s 2x2 transform to points that have already been placed.

fn component_offset( &self, offset: Point<i32>, transform: &Transform, scale_offset: bool, delta: Option<Point<Fixed>>, _rounding: OffsetRounding, ) -> Point<i32>

Computes the translation for a component given as an offset.