Trait theon::AsPositionMut
source · [−]pub trait AsPositionMut: AsPosition {
fn as_position_mut(&mut self) -> &mut Self::Position;
fn transform<F>(&mut self, f: F)
where
F: FnMut(&Self::Position) -> Self::Position,
{ ... }
fn map_position<F>(self, f: F) -> Self
where
Self: Sized,
F: FnMut(&Self::Position) -> Self::Position,
{ ... }
}Expand description
Mutable positional data.
This trait exposes positional data for geometric types along with its
immutable variant AsPosition.
Examples
Exposing mutable positional data for a vertex:
use nalgebra::{Point3, Vector3};
use theon::{AsPosition, AsPositionMut};
pub struct Vertex {
position: Point3<f64>,
normal: Vector3<f64>,
}
impl AsPosition for Vertex {
type Position = Point3<f64>;
fn as_position(&self) -> &Self::Position {
&self.position
}
}
impl AsPositionMut for Vertex {
fn as_position_mut(&mut self) -> &mut Self::Position {
&mut self.position
}
}