Crate cotis_pipes 

Layout-to-renderer pipe for Cotis.

cotis-pipes implements cotis::pipes::LayoutRenderPipe — the conversion layer between cotis-layout output and cotis-defaults render commands. Each frame, layout produces a stream of RenderCommandOutput values; this crate decodes them into a caller-chosen RenderTList command stream for the renderer.

Frame pipeline

cotis-layout  →  cotis-pipes  →  renderer
RenderCommandOutput     RenderTList<…>     CotisRenderer::draw

1. CotisLayoutManager runs layout and yields RenderCommandOutput per frame.
2. CotisLayoutToRenderListPipeForGenerics walks your RenderTList type and emits draw commands (Rectangle, Text, Border, Image, ClipStart, ClipEnd, plus any custom types you register).
3. The renderer consumes the flattened RenderTList stream.

When layout output already matches what the renderer expects, pass [()] as the identity LayoutRenderPipe instead (see CotisApp::new).

Quick start

Define a RenderTList type alias for your command stream, then wire the pipe into CotisApp:

use cotis::cotis_app::CotisApp;
use cotis_layout::preamble::CotisLayoutManager;
use cotis_pipes::cotis_layout_pipes::CotisLayoutToRenderListPipeForGenerics;
use cotis_defaults::render_commands::render_t_list::RenderTList;
use cotis_defaults::render_commands::{ClipStart, ClipEnd, Rectangle, Border, Text};
use cotis_utils::math::Dimensions;

type StandardRenderCmds = RenderTList<
    ClipStart<'static, ()>,
    RenderTList<
        ClipEnd,
        RenderTList<
            Rectangle<'static, ()>,
            RenderTList<Border<'static, ()>, RenderTList<Text<'static, ()>, ()>>,
        >,
    >,
>;

let dimensions = Dimensions::new(800.0, 600.0);
let manager = CotisLayoutManager::new(dimensions);
// let app = CotisApp::new(renderer, manager, CotisLayoutToRenderListPipeForGenerics);

See cotis-layout examples — especially support.rs for a complete StandardRenderCmds alias and circle_example.rs for extending the pipeline with custom drawables.

Extending with custom drawables

Append your type to the tail of a RenderTList and implement FromRenderCommandOutput. Return Some(cmd) to emit a draw command or None to skip. See cotis_layout_pipes for decode rules and the extension model.

Modules

• cotis_layout_pipes — pipe implementation, decode traits, and built-in command decoders.

Modules

cotis_layout_pipes

Decodes RenderCommandOutput into RenderTList command streams.