Trait Scene 

pub trait Scene {
    // Required methods
    fn under(&self, pointer: &Pointer, accepts: &[String]) -> Vec<ElementHit>;
    fn hit_instance(&self, name: &str, pointer: &Pointer) -> Option<Scalar>;

    // Provided method
    fn pick(&self, pointer: &Pointer, accepts: &[String]) -> Option<ElementHit> { ... }
}

The part as an editor draws it, which picks are made in: what an editor needs to know of it beyond a step’s own visuals, and what an operation is given to find what the pointer is over (see crate::editable::Context::scene).

Required Methods

fn under(&self, pointer: &Pointer, accepts: &[String]) -> Vec<ElementHit>

Every element of the kinds accepts under pointer, each once: the one a click picks first — the smallest, in front, nearest the eye (see crate::view::PartView::under) — then the rest front to back along the ray, those hidden behind the first included. Its Pointer::cycle is not looked at.

fn hit_instance(&self, name: &str, pointer: &Pointer) -> Option<Scalar>

How far along pointer’s ray the placed part name is hit, if it is (see Shape::Instance).

Provided Methods

fn pick(&self, pointer: &Pointer, accepts: &[String]) -> Option<ElementHit>

What a click with pointer picks: of what lies Scene::under it, the one its Pointer::cycle names, and where it is hit.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl Scene for PartView

A part as drawn, all of it shown.

impl Scene for Visible<'_>