Struct ab_glyph::OutlinedGlyph

pub struct OutlinedGlyph {
    glyph: Glyph,
    px_bounds: Rect,
    scale_factor: PxScaleFactor,
    outline: Outline,
}

A glyph that has been outlined at a scale & position.

Fields

glyph: Glyph

px_bounds: Rect

scale_factor: PxScaleFactor

outline: Outline

Implementations

impl OutlinedGlyph

pub fn new(glyph: Glyph, outline: Outline, scale_factor: PxScaleFactor) -> Self

Constructs an OutlinedGlyph from the source Glyph, pixel bounds & relatively positioned outline curves.

pub fn glyph(&self) -> &Glyph

Glyph info.

pub fn px_bounds(&self) -> Rect

Conservative whole number pixel bounding box for this glyph outline. The returned rect is exactly large enough to Self::draw into.

The rect holds bounding coordinates in the same coordinate space as the Glyph::position.

Note: These bounds depend on the glyph outline. That outline is not necessarily bound by the layout/glyph_bounds() bounds.

• The min.x bound may be greater or smaller than the Glyph::position x. E.g. if a glyph at position x=0 has an outline going off to the left a bit, min.x will be negative.
• The max.x bound may be greater/smaller than the position.x + h_advance.
• The min.y bound may be greater/smaller than the position.y - ascent.
• The max.y bound may be greater/smaller than the position.y - descent.

Pixel bounds coordinates should not be used for layout logic.

pub fn draw<O: FnMut(u32, u32, f32)>(&self, o: O)

Draw this glyph outline using a pixel & coverage handling function.

The callback will be called for each (x, y) pixel coordinate inside the bounds with a coverage value indicating how much the glyph covered that pixel.

A coverage value of 0.0 means the pixel is totally uncoverred by the glyph. A value of 1.0 or greater means fully covered.

Trait Implementations

impl AsRef<Glyph> for OutlinedGlyph

fn as_ref(&self) -> &Glyph

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for OutlinedGlyph

fn clone(&self) -> OutlinedGlyph

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OutlinedGlyph

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

Formats the value using the given formatter.