Crate rusty_mermaid_core 

Foundation crate for rusty-mermaid: primitives, Scene, Theme, geometry, and text measurement.

This crate defines the universal intermediate representation that all diagram types produce and all rendering backends consume. The central type is Scene, a collection of Primitive drawing elements (rects, circles, paths, text, etc.) that is completely backend-agnostic.

Key types

• Scene / Primitive – the contract between layout and rendering
• Theme / Style / TextStyle – visual configuration
• Color / Point / BBox – geometric primitives
• Shape – node shape catalog (rect, diamond, circle, etc.)
• Direction – layout flow direction (TB, BT, LR, RL)

Key traits

• Renderer – backends implement this to consume a Scene
• TextMeasure – text dimension measurement for layout

Examples

use rusty_mermaid_core::{
    Scene, Primitive, Style, Color, Point, BBox, TextStyle, TextAnchor,
};

let mut scene = Scene::new(200.0, 100.0);

// Add a filled rectangle
scene.push(Primitive::Rect {
    bbox: BBox::new(100.0, 50.0, 120.0, 40.0),
    rx: 4.0,
    ry: 4.0,
    style: Style {
        fill: Some(Color::rgb(236, 236, 255)),
        stroke: Some(Color::rgb(147, 112, 219)),
        stroke_width: Some(2.0),
        ..Style::default()
    },
});

// Add a text label
scene.push(Primitive::Text {
    position: Point::new(100.0, 50.0),
    content: "Hello".into(),
    anchor: TextAnchor::Middle,
    style: TextStyle::default(),
});

assert_eq!(scene.len(), 2);

Re-exports

pub use curve::CurveType;

pub use curve::interpolate;

pub use geometry::arc_sector_segments;

pub use geometry::intersect_circle;

pub use geometry::intersect_ellipse;

pub use geometry::intersect_line_circle;

pub use geometry::intersect_line_ellipse;

pub use geometry::intersect_polygon;

pub use geometry::intersect_rect;

pub use marker_shapes::MarkerGeometry;

pub use marker_shapes::MarkerPath;

pub use marker_shapes::MarkerShape;

pub use marker_shapes::marker_geometry;

pub use marker_shapes::marker_path;

pub use marker_shapes::transform_marker_circle;

pub use marker_shapes::transform_marker_curves;

pub use marker_shapes::transform_marker_points;

pub use renderer::Renderer;

pub use scene::Element;

pub use scene::ElementId;

pub use scene::ElementKind;

pub use scene::MarkerType;

pub use scene::PathSegment;

pub use scene::Primitive;

pub use scene::Scene;

pub use scene::TextAnchor;

pub use scene::Transform;

pub use scene::path_end_tangent;

pub use scene::path_start_tangent;

pub use shape::Shape;

pub use style::FontWeight;

pub use style::Style;

pub use style::TextStyle;

pub use style::Theme;

pub use text::MdSpan;

pub use text::SimpleTextMeasure;

pub use text::TextMeasure;

pub use text::TextSize;

pub use text::parse_inline_markdown;

pub use text::text_baseline_y_offset;

pub use types::BBox;

pub use types::Color;

pub use types::Direction;

pub use types::Point;

Modules

constants

curve

font_fallback

force_layout

CoSE (Compound Spring Embedder) force-directed layout.

geometry

marker_shapes

renderer

scene

shape

style

text

types