Behaviour defining the interface for rendering backends.

Backends convert the intermediate representation (IR) to their target output format (SVG strings, Canvas commands, etc.).

Built-in Backends

• Visualize.Backend.SVG - SVG string output (default)
• Visualize.Backend.Canvas - Canvas 2D API commands

Configuration

Set the default backend in your config:

config :visualize, default_backend: :svg

Or specify at render time:

Visualize.Render.to_string(element, backend: :canvas)

Implementing a Custom Backend

To implement a custom backend, define a module that implements this behaviour:

defmodule MyApp.PDFBackend do
  @behaviour Visualize.Backend

  @impl true
  def path_data(path), do: ...

  @impl true
  def render_path(path, opts), do: ...

  @impl true
  def render_element(element, opts), do: ...

  @impl true
  def render_scene(elements, opts), do: ...
end