Crate cosmic::widget::canvas::path::lyon_path

Data structures and traits to work with paths (vector graphics).

To build and consume paths, see the builder and iterator modules.

This crate is reexported in lyon.

Examples

use lyon_path::Path;
use lyon_path::math::{point};
use lyon_path::builder::*;

// Create a builder object to build the path.
let mut builder = Path::builder();

// Build a simple path.
let mut builder = Path::builder();
builder.begin(point(0.0, 0.0));
builder.line_to(point(1.0, 2.0));
builder.line_to(point(2.0, 0.0));
builder.line_to(point(1.0, 1.0));
builder.close();

// Generate the actual path object.
let path = builder.build();

for event in &path {
    println!("{:?}", event);
}

Modules

• builder
  Path building utilities.
• commands
  A generic representation for paths that allow more control over how endpoints and control points are stored.
• geom
  Simple 2D geometric primitives on top of euclid.
• iterator
  Tools to iterate over paths.
• math
  f32 version of the lyon_geom types used everywhere. Most other lyon crates reexport them.
• path
  The default path data structure.
• path_buffer
  A container to store multiple paths contiguously.
• polygon
  Specific path types for polygons.
• traits
  lyon_path traits reexported here for convenience.

Structs

• ArcFlags
  Flag parameters for arcs as described by the SVG specification.
• AttributeSlice
  A view over a contiguous storage of custom attributes.
• BuilderImpl
  The default builder for Path.
• BuilderWithAttributes
  A builder for Path with custom attributes.
• ControlPointId
  ID of a control point in a path.
• EndpointId
  ID of an endpoint point in a path.
• EventId
  Refers to an event in a path.
• IdIter
  An iterator of endpoint and control point ids for Path and PathSlice.
• IdPolygon
  A view over a sequence of endpoint IDs forming a polygon.
• Iter
  An iterator for Path and PathSlice.
• IterWithAttributes
  An iterator for Path and PathSlice.
• Path
  A simple path data structure.
• PathBuffer
  An object that stores multiple paths contiguously.
• PathBufferSlice
  A view on a PathBuffer.
• PathCommands
  The commands of a path encoded in a single array using IDs to refer to endpoints and control points externally.
• PathCommandsSlice
  A view over PathCommands.
• PathSlice
  A view on a Path.
• Polygon
  A view over a sequence of endpoints forming a polygon.
• Reversed
  An iterator of over a Path traversing the path in reverse.

Enums

• Event
  Represents an event or edge of path.
• FillRule
  The fill rule defines how to determine what is inside and what is outside of the shape.
• LineCap
  Line cap as defined by the SVG specification.
• LineJoin
  Line join as defined by the SVG specification.
• Side
  The positive or negative side of a vector or segment.
• Winding
  The two possible orientations for the edges of a shape to be built in.

Constants

• NO_ATTRIBUTES
  An empty attribute slice.

Traits

• AttributeStore
  Interface for objects storing custom attributes associated with endpoints.
• Position
  Interface for types types (typically endpoints and control points) that have a 2D position.
• PositionStore
  Interface for objects storing endpoints and control points positions.

Type Aliases

• AttributeIndex
  An alias for usize.
• Attributes
  An alias for a slice of f32 values.
• Builder
• IdEvent
  A path event representing endpoints and control points as IDs.
• PathEvent
  A path event representing endpoints and control points as positions.