1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59

//! Probability builder.

use crate::{err::Error, file::Build, math::Probability};
use arctk_attr::load;
use ndarray::Array1;
use std::{
    fmt::{Display, Formatter},
    path::Path,
};

/// Probability distribution builders.
#[load]
pub enum ProbabilityBuilder {
    /// Point.
    Point(f64),
    /// Points.
    Points(Array1<f64>),
    /// Uniform range.
    Uniform(f64, f64),
    /// Linear function.
    Linear(f64, f64, f64, f64),
    /// Gaussian distribution.
    Gaussian(f64, f64),
    /// Constant spline.
    ConstantSpline(Vec<f64>, Vec<f64>),
}

impl Build for ProbabilityBuilder {
    type Inst = Probability;

    #[inline]
    fn build(self, _in_dir: &Path) -> Result<Self::Inst, Error> {
        Ok(match self {
            Self::Point(p) => Self::Inst::new_point(p),
            Self::Points(ps) => Self::Inst::new_points(ps),
            Self::Uniform(min, max) => Self::Inst::new_uniform(min, max),
            Self::Linear(min, max, m, c) => Self::Inst::new_linear(min, max, m, c),
            Self::Gaussian(mu, sigma) => Self::Inst::new_gaussian(mu, sigma),
            Self::ConstantSpline(xs, ps) => {
                Self::Inst::new_constant_spline(Array1::from(xs), &Array1::from(ps))
            }
        })
    }
}

impl Display for ProbabilityBuilder {
    #[inline]
    fn fmt(&self, fmt: &mut Formatter) -> std::fmt::Result {
        let kind = match *self {
            Self::Point { .. } => "Constant",
            Self::Points { .. } => "Line",
            Self::Uniform { .. } => "Bifurcation",
            Self::Linear { .. } => "Linear",
            Self::Gaussian { .. } => "Gaussian",
            Self::ConstantSpline { .. } => "Constant Spline",
        };
        write!(fmt, "{}", kind)
    }
}