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use crate::{err::Error, file::Build};
use arctk_attr::load;
use ndarray::Array1;
use std::{
fmt::{Display, Formatter},
path::Path,
};
#[load]
pub enum FormulaBuilder {
Constant(f64),
Line(f64, f64),
Bifurcation(f64, f64, f64),
ConstantSpline(Vec<f64>, Vec<f64>),
LinearSpline(Vec<f64>, Vec<f64>, Vec<f64>),
LinearSplineAuto(Vec<f64>, Vec<f64>),
QuadraticSpline(Vec<f64>, Vec<f64>, Vec<f64>, Vec<f64>),
}
impl Build for FormulaBuilder {
type Inst = crate::math::Formula;
#[inline]
fn build(self, _in_dir: &Path) -> Result<Self::Inst, Error> {
Ok(match self {
Self::Constant(c) => Self::Inst::Constant { c },
Self::Line(c, m) => Self::Inst::Line { c, m },
Self::Bifurcation(t, under, over) => Self::Inst::Bifurcation { t, under, over },
Self::ConstantSpline(xs, ys) => {
Self::Inst::new_constant_spline(Array1::from(xs), Array1::from(ys))
}
Self::LinearSpline(xs, ys, grads) => Self::Inst::new_linear_spline(
Array1::from(xs),
Array1::from(ys),
Array1::from(grads),
),
Self::LinearSplineAuto(xs, ys) => {
Self::Inst::new_linear_spline_auto(Array1::from(xs), Array1::from(ys))
}
Self::QuadraticSpline(xs, ys, grads, quads) => Self::Inst::new_quadratic_spline(
Array1::from(xs),
Array1::from(ys),
Array1::from(grads),
Array1::from(quads),
),
})
}
}
impl Display for FormulaBuilder {
#[inline]
fn fmt(&self, fmt: &mut Formatter) -> std::fmt::Result {
let kind = match *self {
Self::Constant { .. } => "Constant",
Self::Line { .. } => "Line",
Self::Bifurcation { .. } => "Bifurcation",
Self::ConstantSpline { .. } => "Constant Spline",
Self::LinearSpline { .. } => "Linear Spline",
Self::LinearSplineAuto { .. } => "Linear Spline [auto]",
Self::QuadraticSpline { .. } => "Quadratic Spline",
};
write!(fmt, "{}", kind)
}
}