69 lines
1.4 KiB
Rust
69 lines
1.4 KiB
Rust
//! Duration quantities.
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//!
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//! The base unit is the second. [`Seconds`] is the only unit defined here;
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//! it measures [`Time`](crate::dimension::Time).
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//!
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//! 时间量。
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//!
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//! 基本单位是秒。[`Seconds`] 是此处唯一定义的单位，度量
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//! [`Time`](crate::dimension::Time)。
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use crate::dimension::Time;
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use crate::macros::impl_quantity_ops;
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use apsis_core::{Quantity, Unit};
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use core::fmt;
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/// A duration in seconds.
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///
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/// 以秒为单位的时长。
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#[derive(Debug, Clone, Copy, PartialEq, PartialOrd, Default)]
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pub struct Seconds(f64);
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impl Seconds {
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/// Creates a duration from a value in seconds.
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///
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/// 由秒值创建时长。
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pub const fn new(value: f64) -> Self {
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Self(value)
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}
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/// Returns this duration in seconds.
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///
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/// 返回该时长的秒值。
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pub const fn value(self) -> f64 {
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self.0
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}
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}
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impl Unit for Seconds {
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type Dimension = Time;
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fn factor_to_base() -> f64 {
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1.0
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}
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fn symbol() -> &'static str {
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"s"
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}
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}
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impl Quantity for Seconds {
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type U = Seconds;
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fn value(self) -> f64 {
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self.0
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}
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fn from_value(value: f64) -> Self {
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Self(value)
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}
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}
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impl fmt::Display for Seconds {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "{} s", self.0)
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}
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}
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impl_quantity_ops!(Seconds);
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