unitforge/quantities/
strain.rs

1use crate::impl_macros::macros::*;
2use crate::prelude::*;
3use crate::{Distance, PhysicsUnit, Stress};
4use ndarray::{Array1, Array2, ArrayView1, ArrayView2};
5use num_traits::identities::Zero;
6use num_traits::FromPrimitive;
7#[cfg(feature = "pyo3")]
8use pyo3::pyclass;
9#[cfg(feature = "serde")]
10use serde::{Deserialize, Serialize};
11use std::cmp::Ordering;
12use std::fmt;
13use std::ops::{Add, AddAssign, Div, DivAssign, Mul, MulAssign, Neg, Sub, SubAssign};
14
15#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
16#[derive(Copy, Clone, PartialEq, Debug)]
17#[cfg_attr(feature = "pyo3", pyclass(eq, eq_int))]
18pub enum StrainUnit {
19    m_m,
20    dm_m,
21    cm_m,
22    mm_m,
23    um_m,
24}
25
26impl PhysicsUnit for StrainUnit {
27    fn name(&self) -> &str {
28        match &self {
29            StrainUnit::m_m => "m/m",
30            StrainUnit::dm_m => "dm/m",
31            StrainUnit::cm_m => "cm/m",
32            StrainUnit::mm_m => "mm/m",
33            StrainUnit::um_m => "μm/m",
34        }
35    }
36
37    fn base_per_x(&self) -> (f64, i32) {
38        match self {
39            StrainUnit::m_m => (1., 0),
40            StrainUnit::dm_m => (1., -1),
41            StrainUnit::cm_m => (1., -2),
42            StrainUnit::mm_m => (1., -3),
43            StrainUnit::um_m => (1., -6),
44        }
45    }
46}
47
48impl Strain {
49    pub fn from_distances(numerator: Distance, denominator: Distance) -> Self {
50        Self::from_raw(numerator / denominator)
51    }
52    pub fn from_stresses(numerator: Stress, denominator: Stress) -> Self {
53        Self::from_raw(numerator / denominator)
54    }
55}
56
57impl_quantity!(Strain, StrainUnit, StrainUnit::m_m);
58impl_div_with_self_to_f64!(Strain);
59impl_div!(Strain, Distance, Distance);
unitforge/quantities/strain.rs

unitforge/quantities/
strain.rs
