diff --git a/src/model_physics.rs b/src/model_physics.rs
index bc190d4..af596df 100644
--- a/src/model_physics.rs
+++ b/src/model_physics.rs
@@ -751,13 +751,20 @@ impl MinkowskiMesh<'_>{
 		}
 		best_edge.map(|e|(e.as_undirected(),best_time))
 	}
+	fn infinity_in(&self,infinity_body:crate::physics::Body)->Option<(MinkowskiFace,integer::Time)>{
+		let infinity_fev=self.infinity_fev(-infinity_body.velocity,infinity_body.position);
+		match crate::face_crawler::crawl_fev(infinity_fev,self,&infinity_body,integer::Time::MIN,infinity_body.time){
+			crate::face_crawler::CrawlResult::Miss(_)=>None,
+			crate::face_crawler::CrawlResult::Hit(face,time)=>Some((face,time)),
+		}
+	}
 	pub fn is_point_in_mesh(&self,point:Planar64Vec3)->bool{
 		let infinity_body=crate::physics::Body::new(point,Planar64Vec3::Y,Planar64Vec3::ZERO,integer::Time::ZERO);
 		//movement must escape the mesh forwards and backwards in time,
 		//otherwise the point is not inside the mesh
-		self.predict_collision_out(&infinity_body,integer::Time::MAX)
+		self.infinity_in(infinity_body)
     	.is_some_and(|_|
-			self.predict_collision_out(&-infinity_body,integer::Time::MAX)
+			self.infinity_in(-infinity_body)
     		.is_some()
      	)
 	}