Crate unsvg

The unsvg crate provides a very simple interface for drawing images.

See below for an example:

use unsvg::{Image, COLORS};

fn main() -> Result<(), String> {
    let mut img: Image = Image::new(200, 200);
    let (x1, y1) = (10, 10);
    // Second point's x and y coordinates.
    let (x2, y2) = img.draw_simple_line(x1, y1, 120, 100, COLORS[1])?;
    // Third point's x and y coordinates.
    let (x3, y3) = img.draw_simple_line(x2, y2, 240, 100, COLORS[2])?;
    let _ = img.draw_simple_line(x3, y3, 0, 100, COLORS[3])?;

    img.save_svg("path_to.svg")?;

    Ok(())
}

Note that unsvg’s underlying SVG library uses floats to represent x and y coordinates. unsvg, on the other hand, expects signed integer coordinate values. This design decision was made to ensure consistent, deterministic behaviour for all coordinate inputs, which is not a given when using floats due to float imprecision.

Structs

Color

A 8-bit RGB color.

Image

This represents an image that’s being constructed. Use the new function to create one.

Statics

COLORS

This contains 16 simple colors which users can select from. These correspond to the 16 colors available in the original Logo language. The colors are:

Functions

get_end_coordinates

Tells you where a line will end, given a starting point, direction, and length. This is used by draw_simple_line to get the end point of a line.