44 lines
933 B
Rust
44 lines
933 B
Rust
use std::fmt::{Debug, Display, Formatter};
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const BASE: u32 = 120;
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const BASEF: f64 = BASE as f64;
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#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
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#[repr(transparent)]
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pub struct Scale(pub u32);
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impl Scale {
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pub fn from_int(f: u32) -> Self {
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Self(f.saturating_mul(BASE))
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}
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pub fn from_f64(f: f64) -> Self {
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Self((f * BASEF).round() as u32)
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}
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pub fn to_f64(self) -> f64 {
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self.0 as f64 / BASEF
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}
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pub fn round_up(self) -> u32 {
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self.0.saturating_add(BASE - 1) / BASE
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}
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}
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impl PartialEq<u32> for Scale {
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fn eq(&self, other: &u32) -> bool {
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self.0 == other * BASE
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}
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}
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impl Debug for Scale {
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fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
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Debug::fmt(&self.to_f64(), f)
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}
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}
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impl Display for Scale {
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fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
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Display::fmt(&self.to_f64(), f)
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}
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}
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