Trait Drawer 

pub trait Drawer: 'static {
    // Required methods
    fn draw(&self, reader: &Reader<'_>, view: &mut PartView) -> GeopResult<()>;
    fn structure(&self, reader: &Reader<'_>) -> GeopResult<Vec<StructureItem>>;

    // Provided methods
    fn hidden(&self, _reader: &Reader<'_>) -> Vec<String> { ... }
    fn kept(&self) -> bool { ... }
}

What a crate draws of the part, and lists of it: the targets it defines. A part is drawn by every drawer of the registry in turn, into one PartView — the parts placed in it as instances of components, never one mesh per placement (see crate::view::ViewInstance).

Required Methods

fn draw(&self, reader: &Reader<'_>, view: &mut PartView) -> GeopResult<()>

Draws what of the part reader reads is this crate’s into view.

fn structure(&self, reader: &Reader<'_>) -> GeopResult<Vec<StructureItem>>

What of the part is this crate’s, to list: each drawn item shown (visible: Some(true)) — the editor hides what is hidden — and each one that is not drawn with visible: None.

Provided Methods

fn hidden(&self, _reader: &Reader<'_>) -> Vec<String>

The names of what it draws only to be picked: shown only while a field waiting for a pick could pick it (see crate::editing::Reference::accepts) — none, unless it says otherwise.

fn kept(&self) -> bool

Whether what it draws is kept between processes, as what a program builds is (see geop_core_program::kept): for a drawer whose drawing takes work — the model’s, which meshes its faces — so that a program reopened is drawn without that work. Not, unless it says so.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors