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Overview

SvgBackend renders a Scene to an SVG string. This backend is always available and has no feature flag requirements. It produces vector output that can be scaled without quality loss.

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Usage

use kuva::backend::svg::SvgBackend;
use kuva::render::render::Scene;

let scene = /* your Scene */;
let svg_string = SvgBackend.render_scene(&scene);
std::fs::write("plot.svg", svg_string).unwrap();

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Methods

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render_scene

Renders a Scene to an SVG string.
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scene
&Scene
required
The scene to render
Returns: String - Complete SVG document with XML declaration Example: 
let svg = SvgBackend.render_scene(&scene);
assert!(svg.contains("<svg xmlns"));

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Output Format

The SVG output includes:
  • XML namespace declaration
  • Width and height attributes from scene dimensions
  • Optional background rectangle if scene.background_color is set
  • SVG defs for gradients (used by Sankey plots)
  • All scene primitives converted to SVG elements

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Performance

SVG generation pre-allocates string capacity (~80 bytes per primitive) to minimize reallocations during rendering.

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Source

src/backend/svg.rs

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