Struct norad::glyph::builder::OutlineBuilder

pub struct OutlineBuilder { /* fields omitted */ }

An OutlineBuilder is a consuming builder for crate::glyph::Outline, not unlike a fontTools point pen.

Primarily to be used in conjunction with GlyphBuilder.

Implementations

impl OutlineBuilder

pub fn new() -> Self

pub fn begin_path(
    &mut self,
    identifier: Option<Identifier>
) -> Result<&mut Self, ErrorKind>

Start a new path to be added to the glyph with end_path().

Errors when:

1. a path has been begun already but not ended yet.
2. the identifier is not unique within the glyph.

pub fn add_point(
    &mut self,
    point: (f32, f32),
    segment_type: PointType,
    smooth: bool,
    name: Option<String>,
    identifier: Option<Identifier>
) -> Result<&mut Self, ErrorKind>

Add a point to the path begun by begin_path().

Errors when:

1. begin_path() wasn't called first.
2. the identifier is not unique within the outline.
3. the point is an off-curve with the smooth attribute set.
4. the point sequence is forbidden by the specification.

pub fn end_path(&mut self) -> Result<&mut Self, ErrorKind>

Ends the path begun by begin_path() and adds the contour it to the glyph's outline.

Discards path in case of error.

Errors when:

1. begin_path() wasn't called first.
2. the point sequence is forbidden by the specification.

pub fn add_component(
    &mut self,
    base: GlyphName,
    transform: AffineTransform,
    identifier: Option<Identifier>
) -> Result<&mut Self, ErrorKind>

Add a component to the glyph.

Errors when the identifier is not unique within the glyph.

pub fn finish(self) -> Result<(Outline, HashSet<Identifier>), ErrorKind>

Consume the builder and return the final Outline with the set of hashed indetifiers.

Errors when a path has been begun but not ended.

Trait Implementations

impl Debug for OutlineBuilder

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

Formats the value using the given formatter.