diff --git a/src/lib.rs b/src/lib.rs
index c29b6e5..4437be5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -358,10 +358,7 @@ fn extract_point_pair(pair: &CGA) -> (CGA, CGA) {
     (a,b)
 }
 
-fn get_circle_intersection(circle_1: &CGA, circle_2: &CGA) -> CircleIntersection {
-    if !circle_intersection(circle_1, circle_2) {
-        return CircleIntersection::None;
-    }
+fn circle_intersection(circle_1: &CGA, circle_2: &CGA) -> CircleIntersection {
     //Assumes circles intersect in two places.
     let circle_1 = grade_selection(circle_1, 3); //Explicitly check only trivector part
     let circle_2 = grade_selection(circle_2, 3);
@@ -370,21 +367,12 @@ fn get_circle_intersection(circle_1: &CGA, circle_2: &CGA) -> CircleIntersection
     let ba = &circle_2 * &circle_1;
     let comm = &ab - &ba; //Twice the commutator of circle_1 and circle_2. Unnormalized, but that isn't important.
     let inter = &i4 * &comm; //The bivector of the pair of intersection points.
-    let (a,b) = extract_point_pair(&inter);
-    CircleIntersection::TwoPoints(a,b)
-}
-
-
-fn circle_intersection(circle_1: &CGA, circle_2: &CGA) -> bool {
-    let circle_1 = grade_selection(circle_1, 4);
-    let circle_2 = grade_selection(circle_2, 4);
-    let meet = circle_1 & circle_2;
-    let sqr = &meet * &meet;
-    let mag = magnitude(&sqr);
-    if mag < ERROR {
-        true
+    let sqr = (&inter * &inter)[0];
+    if sqr > ERROR {
+        let (a,b) = extract_point_pair(&inter);
+        CircleIntersection::TwoPoints(a,b)
     } else {
-        false
+        CircleIntersection::None //Technically could have one intersection, but that's not tested yet
     }
 }
 
@@ -586,8 +574,9 @@ impl Game {
 
         draw_line(&self.context, &self.boundary);
         self.ship.draw(&self.context);
+        let line = 100.*self.ship.fixed_to_world(&self.ship.verts[0]) ^ self.ship.fixed_to_world(&self.ship.verts[1]) ^ CGA::e4(); //Scaled to keep above floating point error
         for asteroid in &self.asteroids {
-            let pair = get_circle_intersection(&asteroid.circle, &self.boundary);
+            let pair = circle_intersection(&asteroid.circle, &self.boundary);
             match pair {
                 CircleIntersection::TwoPoints(a,b) => {
                     draw_point(&self.context, &a);
@@ -596,6 +585,15 @@ impl Game {
                 _ => {}
             }
             asteroid.draw(&self.context);
+            let pair = circle_intersection(&asteroid.circle, &line);
+            match pair {
+                CircleIntersection::TwoPoints(a,b) => {
+                    draw_point(&self.context, &a);
+                    draw_point(&self.context, &b);
+                    draw_line(&self.context, &line);
+                }
+                _ => {},
+            }
         }
     }