Struct MultipleMaster 

pub struct MultipleMaster {
    axes: Vec<MasterAxis>,
    num_masters: usize,
    default_weights: Vec<Fixed>,
}

The design space of a multiple master font.

A multiple master font holds two to sixteen masters at the corners of a blend space with one to four axes. An instance is a weighted blend of the masters, and its weights come from a position in that space, given as blend coordinates from 0 to 1 on each axis or as design coordinates, which each axis maps to blend coordinates.

The conversions follow FreeType’s, including where its arithmetic departs from the specification, so that an instance draws as it does in FreeType.

Fields

axes: Vec<MasterAxis>

num_masters: usize

default_weights: Vec<Fixed>

Implementations

impl MultipleMaster

pub fn axes(&self) -> &[MasterAxis]

Returns the axes.

pub fn num_masters(&self) -> usize

Returns the number of masters, which is two to the power of the number of axes.

pub fn default_weights(&self) -> &[Fixed]

Returns the weights of the font’s default instance, one per master.

pub fn default_blend(&self, blend: &mut [Fixed])

Writes the blend coordinates of the font’s default instance to blend, one per axis.

https://gitlab.freedesktop.org/freetype/freetype/-/blob/80a507a6b8e3d2906ad2c8ba69329bd2fb2a85ef/src/type1/t1load.c#L248

pub fn weights_to_blend(&self, weights: &[Fixed], blend: &mut [Fixed])

Writes the blend coordinates that give rise to weights to blend, one per axis.

The blend on an axis is the sum of the weights of the masters at its far end.

pub fn blend_to_weights(&self, blend: &[Fixed], weights: &mut [Fixed])

Writes the weights for the blend coordinates blend to weights, one per master.

An axis without a coordinate takes the middle of its range.

https://gitlab.freedesktop.org/freetype/freetype/-/blob/80a507a6b8e3d2906ad2c8ba69329bd2fb2a85ef/src/type1/t1load.c#L383

pub fn design_to_blend(&self, design: &[Fixed], blend: &mut [Fixed])

Writes the blend coordinates for the design coordinates design to blend, one per axis.

Each design coordinate is rounded to a whole number first. An axis without a coordinate takes half its range above zero, (max - min) / 2, which is the middle only of a range that starts at zero. Both follow FreeType’s T1_Set_Var_Design, as does MasterAxis::design_to_blend.

https://gitlab.freedesktop.org/freetype/freetype/-/blob/80a507a6b8e3d2906ad2c8ba69329bd2fb2a85ef/src/type1/t1load.c#L653

Trait Implementations

impl Clone for MultipleMaster

fn clone(&self) -> MultipleMaster

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MultipleMaster

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

Formats the value using the given formatter.