diff --git a/window/src/bitmaps/atlas.rs b/window/src/bitmaps/atlas.rs
index a18f5a44c..f92bfe766 100644
--- a/window/src/bitmaps/atlas.rs
+++ b/window/src/bitmaps/atlas.rs
@@ -1,5 +1,5 @@
 use crate::bitmaps::{BitmapImage, Texture2d};
-use crate::{Point, Rect};
+use crate::{Point, Rect, Size};
 use failure::{ensure, Fallible};
 use failure_derive::*;
 use std::rc::Rc;
@@ -88,14 +88,10 @@ impl Atlas {
             });
         }
 
-        let rect = Rect {
-            top_left: Point {
-                x: self.left as isize + 1,
-                y: self.bottom as isize + 1,
-            },
-            width,
-            height,
-        };
+        let rect = Rect::new(
+            Point::new(self.left as isize + 1, self.bottom as isize + 1),
+            Size::new(width as isize, height as isize),
+        );
 
         self.texture.write(rect, im);
 
@@ -139,7 +135,7 @@ impl Sprite {
     /// This is 0 for the first slice and increases by the slice_width
     /// as we work through the slices.
     pub fn left_pix(&self, slice: &SpriteSlice) -> f32 {
-        let width = self.coords.width as f32 * slice.scale;
+        let width = self.coords.size.width as f32 * slice.scale;
         if slice.num_cells == 1 || slice.cell_idx == 0 {
             0.0
         } else {
@@ -162,7 +158,7 @@ impl Sprite {
     /// This is nominally the cell_width but can be modified by being the first
     /// or last in a sequence of potentially oversized sprite slices.
     pub fn slice_width(&self, slice: &SpriteSlice) -> f32 {
-        let width = self.coords.width as f32 * slice.scale;
+        let width = self.coords.size.width as f32 * slice.scale;
 
         if slice.num_cells == 1 {
             width
@@ -182,14 +178,14 @@ impl Sprite {
     /// Returns the left coordinate for a slice in texture coordinate space
     #[inline]
     pub fn left(&self, slice: &SpriteSlice) -> f32 {
-        let left = self.coords.left() as f32 + (self.left_pix(slice) / slice.scale);
+        let left = self.coords.min_x() as f32 + (self.left_pix(slice) / slice.scale);
         left / self.texture.width() as f32
     }
 
     /// Returns the right coordinate for a slice in texture coordinate space
     #[inline]
     pub fn right(&self, slice: &SpriteSlice) -> f32 {
-        let right = self.coords.left() as f32
+        let right = self.coords.min_x() as f32
             + ((self.left_pix(slice) + self.slice_width(slice)) as f32 / slice.scale);
         right / self.texture.width() as f32
     }
@@ -197,13 +193,14 @@ impl Sprite {
     /// Returns the top coordinate for a slice in texture coordinate space
     #[inline]
     pub fn top(&self, _slice: &SpriteSlice) -> f32 {
-        self.coords.bottom() as f32 / self.texture.height() as f32
+        self.coords.max_y() as f32 / self.texture.height() as f32
     }
 
     /// Returns the bottom coordinate for a slice in texture coordinate space
     #[inline]
     pub fn bottom(&self, _slice: &SpriteSlice) -> f32 {
-        (self.coords.bottom() + self.coords.height as isize) as f32 / self.texture.height() as f32
+        (self.coords.max_y() + self.coords.size.height as isize) as f32
+            / self.texture.height() as f32
     }
 
     /// Returns the top-left coordinate for a slice in texture coordinate space
diff --git a/window/src/bitmaps/mod.rs b/window/src/bitmaps/mod.rs
index 52c3a1804..0f295044d 100644
--- a/window/src/bitmaps/mod.rs
+++ b/window/src/bitmaps/mod.rs
@@ -1,5 +1,5 @@
 use crate::color::Color;
-use crate::{Operator, Point, Rect};
+use crate::{Operator, Point, Rect, Size};
 use palette::Srgba;
 
 pub mod atlas;
@@ -95,11 +95,11 @@ pub trait BitmapImage {
 
     fn clear_rect(&mut self, rect: Rect, color: Color) {
         let (dim_width, dim_height) = self.image_dimensions();
-        let max_x = (rect.top_left.x + rect.width as isize).min(dim_width as isize) as usize;
-        let max_y = (rect.top_left.y + rect.height as isize).min(dim_height as isize) as usize;
+        let max_x = (rect.origin.x + rect.size.width as isize).min(dim_width as isize) as usize;
+        let max_y = (rect.origin.y + rect.size.height as isize).min(dim_height as isize) as usize;
 
-        let dest_x = rect.top_left.x.max(0) as usize;
-        let dest_y = rect.top_left.y.max(0) as usize;
+        let dest_x = rect.origin.x.max(0) as usize;
+        let dest_y = rect.origin.y.max(0) as usize;
 
         for y in dest_y..max_y {
             let range = self.horizontal_pixel_range_mut(dest_x, max_x, y);
@@ -137,42 +137,30 @@ pub trait BitmapImage {
 
     /// Draw a 1-pixel wide rectangle
     fn draw_rect(&mut self, rect: Rect, color: Color, operator: Operator) {
-        let bottom_right = rect.bottom_right();
+        let bottom_right = rect.origin.add_size(&rect.size);
 
         // Draw the vertical lines down either side
         self.draw_line(
-            rect.top_left,
-            Point {
-                x: rect.top_left.x,
-                y: bottom_right.y,
-            },
+            rect.origin,
+            Point::new(rect.origin.x, bottom_right.y),
             color,
             operator,
         );
         self.draw_line(
-            Point {
-                x: bottom_right.x,
-                y: rect.top_left.y,
-            },
+            Point::new(bottom_right.x, rect.origin.y),
             bottom_right,
             color,
             operator,
         );
         // And the horizontals for the top and bottom
         self.draw_line(
-            rect.top_left,
-            Point {
-                x: bottom_right.x,
-                y: rect.top_left.y,
-            },
+            rect.origin,
+            Point::new(bottom_right.x, rect.origin.y),
             color,
             operator,
         );
         self.draw_line(
-            Point {
-                x: rect.top_left.x,
-                y: bottom_right.y,
-            },
+            Point::new(rect.origin.x, bottom_right.y),
             bottom_right,
             color,
             operator,
@@ -187,31 +175,30 @@ pub trait BitmapImage {
         operator: Operator,
     ) {
         let (im_width, im_height) = im.image_dimensions();
-        let src_rect = src_rect.unwrap_or_else(|| Rect {
-            top_left: Point { x: 0, y: 0 },
-            width: im_width,
-            height: im_height,
-        });
+        let src_rect = src_rect
+            .unwrap_or_else(|| Rect::from_size(Size::new(im_width as isize, im_height as isize)));
 
         let (dim_width, dim_height) = self.image_dimensions();
-        debug_assert!(src_rect.width <= im_width && src_rect.height <= im_height);
-        for y in src_rect.top_left.y as usize..src_rect.top_left.y as usize + src_rect.height {
-            let dest_y = y as isize + dest_top_left.y - src_rect.top_left.y as isize;
+        debug_assert!(
+            src_rect.size.width <= im_width as isize && src_rect.size.height <= im_height as isize
+        );
+        for y in src_rect.origin.y..src_rect.origin.y + src_rect.size.height {
+            let dest_y = y as isize + dest_top_left.y - src_rect.origin.y as isize;
             if dest_y < 0 {
                 continue;
             }
             if dest_y as usize >= dim_height {
                 break;
             }
-            for x in src_rect.top_left.x as usize..src_rect.top_left.x as usize + src_rect.width {
-                let dest_x = x as isize + dest_top_left.x - src_rect.top_left.x as isize;
+            for x in src_rect.origin.x..src_rect.origin.x + src_rect.size.width {
+                let dest_x = x as isize + dest_top_left.x - src_rect.origin.x as isize;
                 if dest_x < 0 {
                     continue;
                 }
                 if dest_x as usize >= dim_width {
                     break;
                 }
-                let src = Color(*im.pixel(x, y));
+                let src = Color(*im.pixel(x as usize, y as usize));
                 let dst = self.pixel_mut(dest_x as usize, dest_y as usize);
                 *dst = src.composite(Color(*dst), &operator).0;
             }
diff --git a/window/src/lib.rs b/window/src/lib.rs
index fd0720be9..df37f93ed 100644
--- a/window/src/lib.rs
+++ b/window/src/lib.rs
@@ -43,77 +43,10 @@ pub struct Dimensions {
     pub dpi: usize,
 }
 
-#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
-pub struct Point {
-    pub x: isize,
-    pub y: isize,
-}
-
-#[derive(Debug, Default, Clone, Copy, PartialEq, Eq)]
-pub struct Rect {
-    pub top_left: Point,
-    pub width: usize,
-    pub height: usize,
-}
-
-fn value_in_range(value: isize, min: isize, max: isize) -> bool {
-    value >= min && value <= max
-}
-
-impl Rect {
-    #[inline]
-    pub fn bottom_right(&self) -> Point {
-        Point {
-            x: self.right(),
-            y: self.bottom(),
-        }
-    }
-
-    #[inline]
-    pub fn left(&self) -> isize {
-        self.top_left.x
-    }
-
-    #[inline]
-    pub fn top(&self) -> isize {
-        self.top_left.y
-    }
-
-    #[inline]
-    pub fn right(&self) -> isize {
-        self.top_left.x + self.width as isize
-    }
-
-    #[inline]
-    pub fn bottom(&self) -> isize {
-        self.top_left.y + self.height as isize
-    }
-
-    pub fn enclosing_boundary_with(&self, other: &Rect) -> Self {
-        let left = self.left().min(other.left());
-        let right = self.right().max(other.right());
-
-        let top = self.top().min(other.top());
-        let bottom = self.bottom().max(other.bottom());
-
-        Self {
-            top_left: Point { x: left, y: top },
-            width: (right - left as isize) as usize,
-            height: (bottom - top as isize) as usize,
-        }
-    }
-
-    // https://stackoverflow.com/a/306379/149111
-    pub fn intersects_with(&self, other: &Rect) -> bool {
-        let x_overlaps = value_in_range(self.left(), other.left(), other.right())
-            || value_in_range(other.left(), self.left(), self.right());
-
-        let y_overlaps = value_in_range(self.top(), other.top(), other.bottom())
-            || value_in_range(other.top(), self.top(), self.bottom());
-
-        x_overlaps && y_overlaps
-    }
-}
+pub struct PixelUnit;
+pub type Point = euclid::Point2D<isize, PixelUnit>;
+pub type Rect = euclid::Rect<isize, PixelUnit>;
+pub type Size = euclid::Size2D<isize, PixelUnit>;
 
 pub trait PaintContext {
     fn get_dimensions(&self) -> Dimensions;
@@ -122,11 +55,10 @@ pub trait PaintContext {
     fn clear(&mut self, color: Color) {
         let dims = self.get_dimensions();
         self.clear_rect(
-            Rect {
-                top_left: Point { x: 0, y: 0 },
-                width: dims.pixel_width,
-                height: dims.pixel_height,
-            },
+            Rect::from_size(Size::new(
+                dims.pixel_width as isize,
+                dims.pixel_height as isize,
+            )),
             color,
         );
     }