lineage/export/svg

Renders a Heritage family tree as a standalone SVG document.

Individuals are laid out in rows by generation (the same depth produced by heritage.flatten): ancestors above the center row, descendants below. Parent–child relationships within the rendered set are drawn as connecting lines. The result is a plain SVG string that can be written to a file or embedded directly in a page.

pub type DisplayMode {
  Phenotype(
    visualize: fn(individual.Individual, individual.SpeciesRules) -> dict.Dict(
      String,
      String,
    ),
    icon_size: Float,
  )
  CompactGenes(
    visualize: fn(individual.Individual, individual.SpeciesRules) -> List(
      List(String),
    ),
  )
}

pub type LayoutConfig {
  LayoutConfig(
    label: fn(List(individual.Individual)) -> dict.Dict(
      String,
      String,
    ),
    mode: DisplayMode,
  )
}

pub fn to_svg(
  heritage: heritage.Heritage,
  center: individual.Individual,
  rules: individual.SpeciesRules,
  config: option.Option(LayoutConfig),
) -> String

let document = svg.to_svg(heritage, member)
simplifile.write("family.svg", document)