Struct MathValue 

pub struct MathValue {
    pub value: i32,
    pub delta_px: i32,
}

A MATH value read at a particular size.

The two fields are in different units and cannot simply be added: a device table adjusts by whole pixels, so scaling its adjustment into design units needs the units per em, which the MATH table does not know. A caller working in font units wants value + delta_px * upem / ppem; one working in pixels has the adjustment already.

Fields

value: i32

The value as the font stores it, in design units.

delta_px: i32

The adjustment the value’s device table makes at the requested size, in pixels. Zero when there is no device table, when it does not cover that size, or when the offset names a VariationIndex.

Trait Implementations

impl Clone for MathValue

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MathValue

impl Debug for MathValue

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

Formats the value using the given formatter.

impl Default for MathValue

fn default() -> Self

Returns the “default value” for a type.

impl Eq for MathValue

impl PartialEq for MathValue

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MathValue