Struct Feature 

pub struct Feature { /* private fields */ }

A run of contiguous cubics grouped into one semantic unit of the outline.

Features are what a morph matches on. A rounded rectangle’s outline is a dozen-odd cubics but only four corners plus four edges, and matching corner-to-corner (convex to convex, concave to concave) is what keeps a shape transition legible. Features built as ignorable — and every Edge — sit out that matching.

Implementations

impl Feature

pub fn edge(cubic: Cubic) -> Feature

A single-cubic edge.

pub fn ignorable(cubics: Vec<Cubic>) -> Feature

A feature of any indentation that the default morph mapping skips.

Useful for steering a morph: marking a 12-pointed star’s concave corners ignorable makes a morph consider only its outer points, which can cost the animation a whole rotation’s worth of intersections.

Panics

If cubics is empty or its curves are not contiguous.

pub fn convex_corner(cubics: Vec<Cubic>) -> Feature

A corner indenting outward.

Panics

If cubics is empty or its curves are not contiguous.

pub fn concave_corner(cubics: Vec<Cubic>) -> Feature

A corner indenting inward.

Panics

If cubics is empty or its curves are not contiguous.

pub fn cubics(&self) -> &[Cubic]

The curves making up this feature, in path order.

pub const fn kind(&self) -> FeatureKind

What this feature contributes to the outline.

pub const fn is_ignorable(&self) -> bool

Whether the default morph mapping skips this feature.

pub const fn is_edge(&self) -> bool

Whether this feature is an edge.

pub const fn is_corner(&self) -> bool

Whether this feature is a corner of either indentation.

pub const fn is_convex_corner(&self) -> bool

Whether this feature is an outward corner.

pub const fn is_concave_corner(&self) -> bool

Whether this feature is an inward corner.

pub fn transformed_with(&self, f: impl Fn(Point) -> Point + Copy) -> Feature

This feature with every point mapped through f.

pub fn reversed(&self) -> Feature

This feature traversed in the opposite direction.

A corner’s indentation flips with the traversal, since a polygon’s convexity flag is orientation-dependent (upstream carries the same negation, and the same note that it is really a property of the polygon’s winding).

Trait Implementations

impl Clone for Feature

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Feature

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

Formats the value using the given formatter.

impl PartialEq for Feature

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Feature