hephae_render::drawer

Trait Drawer

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pub trait Drawer:
    TypePath
    + Component
    + Sized {
    type Vertex: Vertex;
    type ExtractParam: ReadOnlySystemParam;
    type ExtractData: ReadOnlyQueryData;
    type ExtractFilter: QueryFilter;
    type DrawParam: ReadOnlySystemParam;

    // Required methods
    fn extract(
        drawer: DrawerExtract<'_, Self>,
        param: &SystemParamItem<'_, '_, Self::ExtractParam>,
        query: QueryItem<'_, Self::ExtractData>,
    );
    fn draw(
        &mut self,
        param: &SystemParamItem<'_, '_, Self::DrawParam>,
        queuer: &impl VertexQueuer<Vertex = Self::Vertex>,
    );
}
Expand description

A render world Component extracted from the main world that will be used to issue draw requests.

Required Associated Types§

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type Vertex: Vertex

The type of vertex this drawer works with.

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type ExtractParam: ReadOnlySystemParam

System parameter to fetch when extracting data from the main world.

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type ExtractData: ReadOnlyQueryData

Query item to fetch from entities when extracting from those entities to the render world.

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type ExtractFilter: QueryFilter

Additional query filters accompanying ExtractData.

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type DrawParam: ReadOnlySystemParam

System parameter to fetch when issuing draw requests.

Required Methods§

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fn extract( drawer: DrawerExtract<'_, Self>, param: &SystemParamItem<'_, '_, Self::ExtractParam>, query: QueryItem<'_, Self::ExtractData>, )

Extracts an instance of this drawer from matching entities, if available.

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fn draw( &mut self, param: &SystemParamItem<'_, '_, Self::DrawParam>, queuer: &impl VertexQueuer<Vertex = Self::Vertex>, )

Issues vertex data and draw requests for the data.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§