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package main
import (
"math/rand"
)
type Interval struct {
Min float64
Max float64
}
func (i Interval) Size() float64 {
return i.Max - i.Min;
}
func (i Interval) Include(x float64) bool {
return i.Min <= x && x <= i.Max;
}
func (i Interval) Surround(x float64) bool {
return i.Min < x && x < i.Max;
}
func (i Interval) Clamp(x float64) float64 {
if x < i.Min {
return i.Min;
}
if x > i.Max {
return i.Max;
}
return x;
}
func (i Interval) Sample() float64 {
return rand.Float64() * i.Size() + i.Min;
}
func (i Interval) RandomVec3() Vec3 {
return Vec3{i.Sample(), i.Sample(), i.Sample()};
}
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