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Bezier-rs: Implement miter-limit (#1096)

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* Implement miter-limit approximation

* Refactor to use Join enum and address other comments

* Rustdocs improvements

* Tweaks

---------

Co-authored-by: Keavon Chambers <keavon@keavon.com>
This commit is contained in:
Hannah Li
2023-03-27 22:58:35 -04:00
committed by Keavon Chambers
co-authored by Keavon Chambers
parent 3733804d18
commit 97be83c404
15 changed files with 106 additions and 69 deletions
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libraries/bezier-rs/src/utils.rs
+12 -4
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@@ -36,17 +36,25 @@ pub enum SubpathTValue {
}
#[derive(Copy, Clone)]
/// Enum to represent the join type between subpaths.
/// As defined in SVG: https://www.w3.org/TR/SVG2/painting.html#LineJoin.
/// Represents the shape of the join between two segments of a path which meet at an angle.
/// Bevel provides a flat connection, Miter provides a sharp connection, and Round provides a rounded connection.
/// As defined in SVG: <https://www.w3.org/TR/SVG2/painting.html#LineJoin>.
pub enum Join {
/// The join is a straight line between the end points of the offset path sides from the two connecting segments.
Bevel,
Miter,
/// Optional f64 is the miter limit, which defaults to 4 if `None` or a value less than 1 is provided.
/// The miter limit is used to prevent highly sharp angles from resulting in excessively long miter joins.
/// If the miter limit is exceeded, the join will be converted to a bevel join.
/// The value is the ratio of the miter length to the stroke width.
/// When that ratio is greater than the miter limit, a bevel join is used instead.
Miter(Option<f64>),
/// The join is a circular arc between the end points of the offset path sides from the two connecting segments.
Round,
}
#[derive(Copy, Clone)]
/// Enum to represent the cap type at the ends of an outline
/// As defined in SVG: https://www.w3.org/TR/SVG2/painting.html#LineCaps.
/// As defined in SVG: <https://www.w3.org/TR/SVG2/painting.html#LineCaps>.
pub enum Cap {
Butt,
Round,