Extra tracers

src/bin/flat.rs

@@ -95,6 +95,35 @@ impl Space {
 		let p = loc.pos + corr * loc.rot * off;
 		Location { pos: p, rot: corr * loc.rot }
 	}
+
+	fn trace_inner(&self, ray: Ray) -> Ray {
+		assert_eq!(self.which_subspace(ray.pos), Inner);
+		let cell = RectInside { rect: self.rect };
+		let ray = cell.ray_to_local(ray);
+		let ray = cell.to_boundary(ray).expect("Can't get outta here!");
+		cell.ray_to_global(ray)
+	}
+
+	fn trace_outer(&self, ray: Ray) -> Option<Ray> {
+		assert_eq!(self.which_subspace(ray.pos), Outer);
+		let cell = basic_shapes::Rect { size: vec2(self.rect.outer_radius, self.rect.external_halflength) };
+		if let Some(dist) = cell.trace_into(ray) {
+			Some(Ray { pos: ray.pos + ray.dir * dist, dir: ray.dir })
+		} else {
+			None
+		}
+	}
+
+	fn trace_boundary(&self, ray: Ray) -> Ray {
+		assert_eq!(self.which_subspace(ray.pos), Boundary);
+		let mut ray = ray;
+		loop {
+			ray = self.trace_step(ray);
+			if self.which_subspace(ray.pos) != Boundary {
+				break ray;
+			}
+		}
+	}
 }
 
 fn draw_ray_2(gc: &mut Vec<Draw>, space: &Space, base: Vec2, dir: Vec2) {