rtweekend-pl/interval.pi at main · Pivot-Studio/rtweekend-pl · GitHub

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use raytracepl::utils::*;

pub struct Interval {
    pub min:f64;
    pub max:f64;
}

pub fn new(min:f64, max:f64)  Interval {
    return Interval {
        min: min,
        max: max
    };
}

impl Interval {
    pub fn is_empty()  bool {
        return self.min > self.max;
    }
    pub fn contains(x:f64)  bool {
        return x >= self.min && x <= self.max;
    }
    pub fn surrounds(x:f64)  bool {
        return x > self.min && x < self.max;
    }
    pub fn clamp(x:f64) f64 {
        if x < self.min {
            return self.min;
        }
        if x > self.max {
            return self.max;
        }
        return x;
    }
}

var EMPTY = Interval { min: utils::INFINITY, max: -utils::INFINITY };

var UNIVERSE = Interval { min: -utils::INFINITY, max: utils::INFINITY };