Struct PathCommands

pub struct PathCommands { /* private fields */ }

Available on crate feature canvas only.

The commands of a path encoded in a single array using IDs to refer to endpoints and control points externally.

PathCommands is a good fit when the a custom endpoint and control point types are needed or when their the user needs full control over their storage.

Representation

Path commands contains a single array of 32 bits integer values encoding path commands, endpoint IDs or control point IDs.

 __________________________________________________________________________
|       |          |      |          |         |              |          |
| Begin |EndpointID| Line |EndpointID|Quadratic|ControlPointId|EndpointID| ...
|_______|__________|______|__________|_________|______________|__________|_

Example

use lyon_path::{EndpointId, PathCommands};

let mut cmds = PathCommands::builder();

cmds.begin(EndpointId(0));
cmds.line_to(EndpointId(1));
cmds.line_to(EndpointId(2));
cmds.end(true);

let cmds = cmds.build();

Implementations

impl PathCommands

pub fn builder() -> PathCommandsBuilder

Creates a PathCommandsBuilder to create path commands.

pub fn iter(&self) -> Iter<'_>

Returns an iterator over the path commands.

pub fn as_slice(&self) -> PathCommandsSlice<'_>

Returns a view on the path commands.

pub fn path_slice<'l, Endpoint, ControlPoint>( &'l self, endpoints: &'l [Endpoint], control_points: &'l [ControlPoint], ) -> CommandsPathSlice<'l, Endpoint, ControlPoint>

Returns a view on a path made of these commands with endpoint and control point slices.

pub fn events<'l, Endpoint, ControlPoint>( &'l self, endpoints: &'l [Endpoint], control_points: &'l [ControlPoint], ) -> Events<'l, Endpoint, ControlPoint>

Returns an iterator over the path, with endpoints and control points.

pub fn event(&self, id: EventId) -> Event<EndpointId, ControlPointId>

Returns the event for a given event ID.

pub fn next_event_id_in_path(&self, id: EventId) -> Option<EventId>

Returns the next event id within the path.

pub fn next_event_id_in_sub_path(&self, id: EventId) -> EventId

Returns the next event id within the sub-path.

Loops back to the first event after the end of the sub-path.

Trait Implementations

impl Clone for PathCommands

fn clone(&self) -> PathCommands

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PathCommands

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

Formats the value using the given formatter.

impl<'l> From<&'l PathCommands> for PathCommandsSlice<'l>

fn from(commands: &'l PathCommands) -> PathCommandsSlice<'l>

Converts to this type from the input type.

impl<'l> IntoIterator for &'l PathCommands

type Item = Event<EndpointId, ControlPointId>

The type of the elements being iterated over.

type IntoIter = Iter<'l>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Iter<'l>

Creates an iterator from a value.