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use nalgebra; use num::Num; use std::cmp::Ordering; use std::convert::From; use std::marker::PhantomData; use std::ops; use math::Clamp; pub trait ClampedRange<T> { fn max_value() -> T; fn min_value() -> T; } pub struct Clamped<T, R>(T, PhantomData<R>) where T: Copy + Num + PartialOrd, R: ClampedRange<T>; impl<T, R> Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { pub fn new(value: T) -> Self { Clamped(nalgebra::clamp(value, R::min_value(), R::max_value()), PhantomData) } pub fn max_value() -> Self { Clamped(R::max_value(), PhantomData) } pub fn max_inner_value() -> T { R::max_value() } pub fn min_value() -> Self { Clamped(R::min_value(), PhantomData) } pub fn min_inner_value() -> T { R::min_value() } pub fn to_inner(&self) -> T { self.0 } } impl<T, R> Clamp<Clamped<T, R>> for Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { fn clamp(&self, min: Self, max: Self) -> Self { nalgebra::clamp(*self, min, max) } } impl<T, R> Clone for Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { fn clone(&self) -> Self { Clamped(self.0, PhantomData) } } impl<T, R> Copy for Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { } impl<T, R> From<T> for Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { fn from(value: T) -> Self { Self::new(value) } } impl<T, R> Eq for Clamped<T, R> where T: Copy + Eq + Num + PartialOrd, R: ClampedRange<T> { } impl<T, R> Ord for Clamped<T, R> where T: Copy + Num + Ord + PartialOrd, R: ClampedRange<T> { fn cmp(&self, other: &Self) -> Ordering { self.0.cmp(&other.0) } } impl<T, R> PartialEq for Clamped<T, R> where T: Copy + Num + PartialEq + PartialOrd, R: ClampedRange<T> { fn eq(&self, other: &Self) -> bool { self.0.eq(&other.0) } } impl<T, R> PartialEq<T> for Clamped<T, R> where T: Copy + Num + PartialEq + PartialOrd, R: ClampedRange<T> { fn eq(&self, other: &T) -> bool { self.0.eq(other) } } impl<T, R> PartialOrd for Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { fn partial_cmp(&self, other: &Self) -> Option<Ordering> { self.0.partial_cmp(&other.0) } } impl<T, R> PartialOrd<T> for Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { fn partial_cmp(&self, other: &T) -> Option<Ordering> { self.0.partial_cmp(other) } } impl<T, R> ops::Add for Clamped<T, R> where T: ops::Add<Output = T> + Copy + Num + PartialOrd, R: ClampedRange<T> { type Output = Self; fn add(self, other: Self) -> Self::Output { Self::new(self.0.add(other.0)) } } impl<T, R> ops::Add<T> for Clamped<T, R> where T: ops::Add<Output = T> + Copy + Num + PartialOrd, R: ClampedRange<T> { type Output = Self; fn add(self, other: T) -> Self::Output { Self::new(self.0.add(other)) } } impl<T, R> ops::Deref for Clamped<T, R> where T: Copy + Num + PartialOrd, R: ClampedRange<T> { type Target = T; fn deref(&self) -> &Self::Target { &self.0 } } impl<T, R> ops::Div for Clamped<T, R> where T: Copy + ops::Div<Output = T> + Num + PartialOrd, R: ClampedRange<T> { type Output = Self; fn div(self, other: Self) -> Self::Output { Self::new(self.0.div(other.0)) } } impl<T, R> ops::Div<T> for Clamped<T, R> where T: Copy + ops::Div<Output = T> + Num + PartialOrd, R: ClampedRange<T> { type Output = Self; fn div(self, other: T) -> Self::Output { Self::new(self.0.div(other)) } } impl<T, R> ops::Mul for Clamped<T, R> where T: Copy + ops::Mul<Output = T> + Num + PartialOrd, R: ClampedRange<T> { type Output = Self; fn mul(self, other: Self) -> Self::Output { Self::new(self.0.mul(other.0)) } } impl<T, R> ops::Mul<T> for Clamped<T, R> where T: Copy + ops::Mul<Output = T> + Num + PartialOrd, R: ClampedRange<T> { type Output = Self; fn mul(self, other: T) -> Self::Output { Self::new(self.0.mul(other)) } } impl<T, R> ops::Neg for Clamped<T, R> where T: Copy + ops::Neg<Output = T> + Num + PartialOrd, R: ClampedRange<T> { type Output = Self; fn neg(self) -> Self::Output { Self::new(self.0.neg()) } } impl<T, R> ops::Sub for Clamped<T, R> where T: Copy + Num + ops::Sub<Output = T> + PartialOrd, R: ClampedRange<T> { type Output = Self; fn sub(self, other: Self) -> Self::Output { Self::new(self.0.sub(other.0)) } } impl<T, R> ops::Sub<T> for Clamped<T, R> where T: Copy + Num + ops::Sub<Output = T> + PartialOrd, R: ClampedRange<T> { type Output = Self; fn sub(self, other: T) -> Self::Output { Self::new(self.0.sub(other)) } }