common: Ray module

lib/common/src/lib.rs

@@ -1,5 +1,6 @@
 pub mod bvh;
 pub mod map;
+pub mod ray;
 pub mod run;
 pub mod aabb;
 pub mod model;

lib/common/src/ray.rs

@@ -0,0 +1,20 @@
+use ratio_ops::ratio::Ratio;
+use crate::integer::{self,Planar64,Planar64Vec3};
+
+pub struct Ray{
+	pub origin:Planar64Vec3,
+	pub direction:Planar64Vec3,
+}
+impl Ray{
+	pub fn extrapolate<Num,Den,N1,T1>(&self,t:Ratio<Num,Den>)->Planar64Vec3
+	where
+		Num:Copy,
+		Den:Copy,
+		Num:core::ops::Mul<Planar64,Output=N1>,
+		Planar64:core::ops::Mul<Den,Output=N1>,
+		N1:integer::Divide<Den,Output=T1>,
+		T1:integer::Fix<Planar64>,
+	{
+		self.origin+self.direction.map(|elem|(t*elem).divide().fix())
+	}
+}