Struct Circle 

pub struct Circle {
    pub color: Color,
    pub radius: i64,
    /* private fields */
}

Circle shape used to plot data.

A single instance of Circle is reused to plot multiple data points.

Currently it only allows integer radii, meaning that it cant plot shapes of even width. So you can plot a dot or a 3x3 “circle” or a 5x5 circle, but not a 2x2 circle.

Fields

color: Color

Color of plotted circle.

radius: i64

The radius (almost) of the drawn circle.

The true radius is actually radius - 0.5 (e.g. radius 1 = single pixel). TODO: Allow half-integer radii

Implementations

impl Circle

pub fn new(color: Color, radius: i64) -> Circle

Creates a new plottable circle with given color and radius.

pub fn draw(&self, plot: &mut Plot, pt: Point)

Draws a circle with the given logical coordinates.