Struct BoundingBox 

pub struct BoundingBox {
    pub upper_left: Point,
    pub lower_right: Point,
}

Record of the region occupied by a Path.

This will be a rectangle in which the points of a Path fit.

Examples

use l_system_fractals::paths::{BoundingBox, Path, Point};
use l_system_fractals::num_validity::AlmostEq;

let pth = Path::from(vec![
    Point::new(1.0, 5.0),
    Point::new(3.7, 4.5),
    Point::new(2.5, 3.0)
]);

let bb = pth.bounding_box().unwrap();

assert!(bb.lower_right.almost_eq(&Point::new(3.7, 5.0), 0.001));
assert!(bb.upper_left.almost_eq(&Point::new(1.0, 3.0), 0.001));

// AlmostEq is implemented for BoundingBox

use std::f64::consts::PI;

use l_system_fractals::paths::{BoundingBox, Path, Point};
use l_system_fractals::num_validity::AlmostEq;

let pts: Vec<Point> = (0..15_839)
    .map(|x| (x as f64) * PI / 7919.0 + PI / 4.0)
    .map(
        |x| Point::new(5.0 * x.cos() + 6.0, 5.0 * x.sin() + 6.0)
    ).collect();

let pth: Path = pts.into();

let bb1: BoundingBox = pth.bounding_box().unwrap();

let bb2 = BoundingBox {
    upper_left: Point::new(1.0, 1.0),
    lower_right: Point::new(11.0, 11.0)
};

assert!(bb1.almost_eq(&bb2, 0.00001));

Fields

upper_left: Point

The upper-left corner of the region.

lower_right: Point

The lower-right corner of the region.

Implementations

impl BoundingBox

pub fn width(&self) -> f64

The width of the bounding box.

Examples

use l_system_fractals::paths::{BoundingBox, Path, Point};
use l_system_fractals::num_validity::AlmostEq;

let pth = Path::from(vec![
    Point::new(1.0, 5.0),
    Point::new(3.7, 4.5),
    Point::new(2.5, 3.0)
]);

let bb = pth.bounding_box().unwrap();

assert!(bb.width().almost_eq(&2.7, 0.001));

pub fn height(&self) -> f64

The height of the bounding box.

Examples

use l_system_fractals::paths::{BoundingBox, Path, Point};
use l_system_fractals::num_validity::AlmostEq;

let pth = Path::from(vec![
    Point::new(1.0, 5.0),
    Point::new(3.7, 4.5),
    Point::new(2.5, 3.0)
]);

let bb = pth.bounding_box().unwrap();

assert!(bb.height().almost_eq(&2.0, 0.001));

pub fn background_box(&self, fill: &str) -> String

Returns an SVG rect with the coordinates of the bounding box (to be used as a background).

Trait Implementations

impl AlmostEq for BoundingBox

fn almost_eq(&self, other: &Self, epsilon: f64) -> bool

Returns true if the distance between objects is less than epsilon.

impl Clone for BoundingBox

fn clone(&self) -> BoundingBox

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BoundingBox

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for BoundingBox

fn eq(&self, other: &BoundingBox) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for BoundingBox

impl StructuralPartialEq for BoundingBox