Trait spade::HasPosition

source · 
pub trait HasPosition {
    type Point: PointN;

    fn position(&self) -> Self::Point;
}
Expand description

An object that has a position.

Describes a point like object that has a well defined position. Since this trait also implements SpatialObject, HasPosition can serve as a quick and easy implementation of your own pointlike objects that can be inserted into r-trees or delaunay triangulations:

extern crate cgmath;
extern crate spade;

use cgmath::Point3;
use spade::HasPosition;
use spade::rtree::RTree;

struct MyPoint {
  position: Point3<f32>,
  my_data: i32,
}
impl HasPosition for MyPoint {
   type Point = Point3<f32>;
   fn position(&self) -> Point3<f32> {
     self.position
   }
}
fn main() {
  let mut tree = RTree::new();
  tree.insert(MyPoint { position: Point3::new(0.0, 1.0, 0.0), my_data: 42 });
  assert_eq!(tree.lookup(&Point3::new(0.0, 1.0, 0.0)).unwrap().my_data, 42);
}

Required Associated Types

The object’s point type

Required Methods

Return’s the object’s position.

Implementors