bitrot: update for nalgebra deprecations

src/scenes/world.rs

@@ -376,8 +376,8 @@ impl<D: gfx::Device,
     let eye = Self::toroid((x, y), r1, r2, r3);
     let looktgt = Self::toroid((x, y - 1.0), r1, r2, r3);  // look ahead = north
     let normal = Self::toroid((x, y), 0.0, r2, r2).component_mul(&na::Vector3::new(r2 / r3, 1.0, 1.0));
-    self.camera * na::Isometry3::look_at_rh(&na::Point3::from_coordinates(eye),
-                                            &na::Point3::from_coordinates(looktgt),
+    self.camera * na::Isometry3::look_at_rh(&na::Point3::from(eye),
+                                            &na::Point3::from(looktgt),
                                             &normal,
                                            ).to_homogeneous()
   }