# mod.rs - source
Source of the Rust file `maplibre/src/raster/mod.rs`.

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    use std::{marker::PhantomData, rc::Rc};

    use image::RgbaImage;

    use crate::{
        coords::WorldTileCoords,
        environment::Environment,
        kernel::Kernel,
        plugin::Plugin,
        raster::{
            populate_world_system::PopulateWorldSystem, queue_system::queue_system,
            request_system::RequestSystem, resource::RasterResources, resource_system::resource_system,
            upload_system::upload_system,
        },
        render::{eventually::Eventually, tile_view_pattern::ViewTileSources, RenderStageLabel},
        schedule::Schedule,
        tcs::{system::SystemContainer, tiles::TileComponent, world::World},
    };

    mod populate_world_system;
    mod process_raster;
    mod queue_system;
    mod render_commands;
    mod request_system;
    mod resource;
    mod resource_system;
    mod transferables;
    mod upload_system;

    pub use transferables::{
        DefaultRasterTransferables, LayerRaster, LayerRasterMissing, RasterTransferables,
    };

    use crate::render::graph::RenderGraph;

    pub struct RasterPlugin<T>(PhantomData<T>);

    impl<T: RasterTransferables> Default for RasterPlugin<T> {
        fn default() -> Self {
            Self(Default::default())
        }
    }

    impl<E: Environment, T: RasterTransferables> Plugin<E> for RasterPlugin<T> {
        fn build(
            &self,
            schedule: &mut Schedule,
            kernel: Rc<Kernel<E>>,
            world: &mut World,
            _graph: &mut RenderGraph,
        ) {
            world
                .resources
                .insert(Eventually::<RasterResources>::Uninitialized);

            world
                .resources
                .get_or_init_mut::<ViewTileSources>()
                .add_resource_query::<&Eventually<RasterResources>>();

            schedule.add_system_to_stage(
                RenderStageLabel::Extract,
                SystemContainer::new(RequestSystem::<E, T>::new(&kernel)),
            );
            schedule.add_system_to_stage(
                RenderStageLabel::Extract,
                SystemContainer::new(PopulateWorldSystem::<E, T>::new(&kernel)),
            );
            schedule.add_system_to_stage(RenderStageLabel::Prepare, resource_system);
            schedule.add_system_to_stage(RenderStageLabel::Queue, upload_system);
            schedule.add_system_to_stage(RenderStageLabel::Queue, queue_system); // FIXME tcs: Upload updates the TileView in tileviewpattern -> upload most run before prepare
        }
    }

    pub struct AvailableRasterLayerData {
        pub coords: WorldTileCoords,
        pub source_layer: String,
        pub image: RgbaImage,
    }

    pub struct MissingRasterLayerData {
        pub coords: WorldTileCoords,
        pub source_layer: String,
    }

    pub enum RasterLayerData {
        Available(AvailableRasterLayerData),
        Missing(MissingRasterLayerData),
    }

    #[derive(Default)]
    pub struct RasterLayersDataComponent {
        pub layers: Vec<RasterLayerData>,
    }

    impl TileComponent for RasterLayersDataComponent {}