[−][src]Trait psyche_utils::grid::GridSampleZeroValue

pub trait GridSampleZeroValue<T> {
    fn sample_zero_value() -> T;
}

Trait used to obtain zero value for given type. It is used by built-in samplers and it's implemented for f32 and f64 types so if you want to sample any other type of grid, you have implement this trait for that type.

Required methods

`fn sample_zero_value() -> T`

produce zero value for given type.

Return

Zero value of given type.

Example

use psyche_utils::grid::{Grid, GridSamplerCluster, GridSampleZeroValue};
use std::ops::Add;

#[derive(Debug, Copy, Clone, Eq, PartialEq)]
struct Integer(pub i32);

impl Add for Integer {
    type Output = Integer;
    fn add(self, other: Integer) -> Integer { Integer(self.0 + other.0) }
}

impl GridSampleZeroValue<Self> for Integer {
    fn sample_zero_value() -> Self { Integer(0) }
}

let grid = Grid::new(2, 2, Integer(1));
let sampler = GridSamplerCluster::new((0, 0), (1, 1));
assert_eq!(grid.sample(sampler).unwrap(), (Integer(4), 4));