Trait Observer 

pub trait Observer {
    // Provided methods
    fn enter_point_event(&mut self, point_id: PointId, context: &Context<'_>) { ... }
    fn exit_point_event(&mut self, point_id: PointId, context: &Context<'_>) { ... }
    fn edge_event(&mut self, edge: Edge, context: &Context<'_>) { ... }
    fn sweep_done(&mut self, context: &Context<'_>) { ... }
    fn finalized(&mut self, context: &Context<'_>) { ... }
    fn will_legalize(&mut self, triangle_id: TriangleId, context: &Context<'_>) { ... }
    fn legalize_step(&mut self, triangle_id: TriangleId, context: &Context<'_>) { ... }
    fn triangle_rotated(
        &mut self,
        triangle_id: TriangleId,
        opposite_triangle_id: TriangleId,
        context: &Context<'_>,
    ) { ... }
    fn legalized(&mut self, triangel_id: TriangleId, context: &Context<'_>) { ... }
}

Observer for sweeper, used to monitor how sweeper works, quite useful for visual debugging when things goes wrong. Check example’s draw.

Provided Methods

fn enter_point_event(&mut self, point_id: PointId, context: &Context<'_>)

A point_event processed

fn exit_point_event(&mut self, point_id: PointId, context: &Context<'_>)

fn edge_event(&mut self, edge: Edge, context: &Context<'_>)

An edge event processed

fn sweep_done(&mut self, context: &Context<'_>)

Sweep process done

fn finalized(&mut self, context: &Context<'_>)

The result finalized, holes, fake points etc cleaned.

fn will_legalize(&mut self, triangle_id: TriangleId, context: &Context<'_>)

About to legalize for triangle

fn legalize_step(&mut self, triangle_id: TriangleId, context: &Context<'_>)

A single step inside one legalization process

fn triangle_rotated( &mut self, triangle_id: TriangleId, opposite_triangle_id: TriangleId, context: &Context<'_>, )

A rotate happened

fn legalized(&mut self, triangel_id: TriangleId, context: &Context<'_>)

The triangle legalized

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl Observer for ()

Default dummy observer, blank impl, so all calls should be optimized out by compiler.

Implementors