diff -r 901751d3cd80 -r febccab419b1 rust/hwphysics/src/grid.rs
--- a/rust/hwphysics/src/grid.rs	Tue Jun 04 23:19:18 2019 +0300
+++ b/rust/hwphysics/src/grid.rs	Tue Jun 04 22:34:42 2019 +0200
@@ -1,83 +1,83 @@
-use crate::{
-    collision::{fppoint_round, CircleBounds, DetectedCollisions},
-    common::GearId,
-};
-
-use fpnum::FPPoint;
-use integral_geometry::{GridIndex, Point, Size};
-
-struct GridBin {
-    refs: Vec<GearId>,
-    static_entries: Vec<CircleBounds>,
-    dynamic_entries: Vec<CircleBounds>,
-}
-
-impl GridBin {
-    fn new() -> Self {
-        Self {
-            refs: vec![],
-            static_entries: vec![],
-            dynamic_entries: vec![],
-        }
-    }
-}
-
-const GRID_BIN_SIZE: usize = 128;
-
-pub struct Grid {
-    bins: Vec<GridBin>,
-    space_size: Size,
-    bins_count: Size,
-    index: GridIndex,
-}
-
-impl Grid {
-    pub fn new(size: Size) -> Self {
-        assert!(size.is_power_of_two());
-        let bins_count = Size::new(size.width / GRID_BIN_SIZE, size.height / GRID_BIN_SIZE);
-
-        Self {
-            bins: (0..bins_count.area()).map(|_| GridBin::new()).collect(),
-            space_size: size,
-            bins_count,
-            index: Size::square(GRID_BIN_SIZE).to_grid_index(),
-        }
-    }
-
-    fn bin_index(&self, position: &FPPoint) -> Point {
-        self.index.map(fppoint_round(position))
-    }
-
-    fn lookup_bin(&mut self, position: &FPPoint) -> &mut GridBin {
-        let index = self.bin_index(position);
-        &mut self.bins[index.x as usize * self.bins_count.width + index.y as usize]
-    }
-
-    pub fn insert_static(&mut self, gear_id: GearId, bounds: &CircleBounds) {
-        self.lookup_bin(&bounds.center).static_entries.push(*bounds)
-    }
-
-    pub fn insert_dynamic(&mut self, gear_id: GearId, bounds: &CircleBounds) {
-        self.lookup_bin(&bounds.center)
-            .dynamic_entries
-            .push(*bounds)
-    }
-
-    pub fn check_collisions(&self, collisions: &mut DetectedCollisions) {
-        for bin in &self.bins {
-            for bounds in &bin.dynamic_entries {
-                for other in &bin.dynamic_entries {
-                    if bounds.intersects(other) && bounds != other {
-                        collisions.push(0, 0, &bounds.center)
-                    }
-                }
-
-                for other in &bin.static_entries {
-                    if bounds.intersects(other) {
-                        collisions.push(0, 0, &bounds.center)
-                    }
-                }
-            }
-        }
-    }
-}
+use crate::{
+    collision::{fppoint_round, CircleBounds, DetectedCollisions},
+    common::GearId,
+};
+
+use fpnum::FPPoint;
+use integral_geometry::{GridIndex, Point, Size};
+
+struct GridBin {
+    refs: Vec<GearId>,
+    static_entries: Vec<CircleBounds>,
+    dynamic_entries: Vec<CircleBounds>,
+}
+
+impl GridBin {
+    fn new() -> Self {
+        Self {
+            refs: vec![],
+            static_entries: vec![],
+            dynamic_entries: vec![],
+        }
+    }
+}
+
+const GRID_BIN_SIZE: usize = 128;
+
+pub struct Grid {
+    bins: Vec<GridBin>,
+    space_size: Size,
+    bins_count: Size,
+    index: GridIndex,
+}
+
+impl Grid {
+    pub fn new(size: Size) -> Self {
+        assert!(size.is_power_of_two());
+        let bins_count = Size::new(size.width / GRID_BIN_SIZE, size.height / GRID_BIN_SIZE);
+
+        Self {
+            bins: (0..bins_count.area()).map(|_| GridBin::new()).collect(),
+            space_size: size,
+            bins_count,
+            index: Size::square(GRID_BIN_SIZE).to_grid_index(),
+        }
+    }
+
+    fn bin_index(&self, position: &FPPoint) -> Point {
+        self.index.map(fppoint_round(position))
+    }
+
+    fn lookup_bin(&mut self, position: &FPPoint) -> &mut GridBin {
+        let index = self.bin_index(position);
+        &mut self.bins[index.x as usize * self.bins_count.width + index.y as usize]
+    }
+
+    pub fn insert_static(&mut self, gear_id: GearId, bounds: &CircleBounds) {
+        self.lookup_bin(&bounds.center).static_entries.push(*bounds)
+    }
+
+    pub fn insert_dynamic(&mut self, gear_id: GearId, bounds: &CircleBounds) {
+        self.lookup_bin(&bounds.center)
+            .dynamic_entries
+            .push(*bounds)
+    }
+
+    pub fn check_collisions(&self, collisions: &mut DetectedCollisions) {
+        for bin in &self.bins {
+            for bounds in &bin.dynamic_entries {
+                for other in &bin.dynamic_entries {
+                    if bounds.intersects(other) && bounds != other {
+                        collisions.push(0, 0, &bounds.center)
+                    }
+                }
+
+                for other in &bin.static_entries {
+                    if bounds.intersects(other) {
+                        collisions.push(0, 0, &bounds.center)
+                    }
+                }
+            }
+        }
+    }
+}