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use std::fmt;
use prelude::*;
use distances_2d::dist_2d;
use functions::center_2d;
#[derive (Debug, PartialEq, PartialOrd, Eq, Clone, Hash)]
pub struct LineSegment2D {
pub start: Point2D,
pub end: Point2D
}
impl LineSegment2D {
pub fn new(start: Point2D, end: Point2D) -> Self {
LineSegment2D{start, end}
}
}
impl IsMovable2D for LineSegment2D {
fn move_by(&mut self, x: f64, y: f64) {
self.start.move_by(x, y);
self.end.move_by(x, y);
}
}
impl HasLength for LineSegment2D {
fn length(&self) -> f64 {
dist_2d(&self.start, &self.end)
}
}
impl HasBoundingBox2D for LineSegment2D {
fn bounding_box(&self) -> Result<BoundingBox2D> {
let mut pts = Vec::new();
pts.push(Box::new(self.start.clone()));
pts.push(Box::new(self.end.clone()));
BoundingBox2D::from_iterator(pts.iter())
}
}
impl HasCenterOfGravity2D for LineSegment2D {
fn center_of_gravity(&self) -> Result<Point2D> {
Ok(center_2d(&self.start, &self.end))
}
}
impl fmt::Display for LineSegment2D {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "({}, {} -> {}, {})", self.start.x(), self.start.y(), self.end.x(), self.end.y())
}
}