diff --git a/ui/src/components/rects/RectPad.vue b/ui/src/components/rects/RectPad.vue
index 5bbb8e3..281c9a6 100644
--- a/ui/src/components/rects/RectPad.vue
+++ b/ui/src/components/rects/RectPad.vue
@@ -13,7 +13,7 @@
     @dblclick.left="remove_rect"
   >
     <Rect
-      v-for="(rect, index) in rectangles_array"
+      v-for="(rect, index) in rectangles"
       :key="'rect' + index"
       :rectangle="rect"
     />
@@ -56,35 +56,24 @@ export default class RectPad extends Vue {
   private dragging = false;
   private drag_rect?: Rectangle;
   private drag_origin = new Vector2D();
-  private rectangles_array: Rectangle[] = [];
+  public rectangles: Rectangle[] = [];
 
   private get preview_visible(): boolean {
     return this.drawing || this.dragging;
   }
 
   private get preview_rectangle(): Rectangle {
-    return new Rectangle(
-      this.preview_corner1,
-      this.preview_corner2
-    ).normalize();
-  }
-
-  public get rectangles(): Rectangle[] {
-    return this.rectangles_array; //.map((rect) => rect.normalize());
-  }
-
-  public set rectangles(rects: Rectangle[]) {
-    this.rectangles_array = rects; //.map((rect) => rect.normalize());
+    return new Rectangle(this.preview_corner1, this.preview_corner2);
   }
 
   private pop_rectangle(point: Vector2D): Rectangle | undefined {
-    const idx = this.rectangles_array.findIndex((rect) => rect.contains(point));
+    const idx = this.rectangles.findIndex((rect) => rect.contains(point));
 
     if (idx === -1) {
       return;
     }
 
-    return this.rectangles_array.splice(idx, 1)[0];
+    return this.rectangles.splice(idx, 1)[0];
   }
 
   private draw_start(event: MouseEvent) {
@@ -108,7 +97,7 @@ export default class RectPad extends Vue {
       return;
     }
 
-    this.rectangles_array.push(this.preview_rectangle);
+    this.rectangles.push(this.preview_rectangle);
   }
 
   private drag_start(event: MouseEvent) {
@@ -136,7 +125,7 @@ export default class RectPad extends Vue {
     }
 
     this.dragging = false;
-    this.rectangles_array.push(this.preview_rectangle);
+    this.rectangles.push(this.preview_rectangle);
   }
 
   private on_mousemove(event: MouseEvent) {
diff --git a/ui/src/components/rects/rectangles.ts b/ui/src/components/rects/rectangles.ts
index 60649a6..9273cc0 100644
--- a/ui/src/components/rects/rectangles.ts
+++ b/ui/src/components/rects/rectangles.ts
@@ -1,39 +1,34 @@
 export class Vector2D {
-  private _x: number;
-  private _y: number;
+  public readonly x: number;
+  public readonly y: number;
 
   constructor(x = 0, y = 0) {
-    this._x = x;
-    this._y = y;
-  }
-
-  public get x(): number {
-    return this._x;
-  }
-
-  public get y(): number {
-    return this._y;
+    this.x = x;
+    this.y = y;
   }
 
   public plus(other: Vector2D): Vector2D {
-    return new Vector2D(this._x + other._x, this._y + other._y);
+    return new Vector2D(this.x + other.x, this.y + other.y);
   }
   public minus(other: Vector2D): Vector2D {
-    return new Vector2D(this._x - other._x, this._y - other._y);
+    return new Vector2D(this.x - other.x, this.y - other.y);
   }
 }
 
 export class Rectangle {
-  private _corner_1: Vector2D;
-  private _corner_2: Vector2D;
+  private readonly corner_1: Vector2D;
+  private readonly corner_2: Vector2D;
 
   constructor(corner_1: Vector2D, corner_2: Vector2D) {
-    this._corner_1 = corner_1;
-    this._corner_2 = corner_2;
+    this.corner_1 = corner_1;
+    this.corner_2 = corner_2;
   }
 
   public get origin(): Vector2D {
-    return this._corner_1;
+    return new Vector2D(
+      Math.min(this.corner_1.x, this.corner_2.x),
+      Math.min(this.corner_1.y, this.corner_2.y),
+    )
   }
 
   public get left(): number {
@@ -45,11 +40,14 @@ export class Rectangle {
   }
 
   public get corner(): Vector2D {
-    return this._corner_2;
+    return new Vector2D(
+      Math.max(this.corner_1.x, this.corner_2.x),
+      Math.max(this.corner_1.y, this.corner_2.y),
+    )
   }
 
   public get size(): Vector2D {
-    return this._corner_2.minus(this._corner_1);
+    return this.corner.minus(this.origin);
   }
 
   public get width(): number {
@@ -65,33 +63,9 @@ export class Rectangle {
   }
 
   public contains(point: Vector2D): boolean {
-    const test_rect = this.normalize();
-
-    return point.x >= test_rect._corner_1.x &&
-      point.y >= test_rect._corner_1.y &&
-      point.x <= test_rect._corner_2.x &&
-      point.y <= test_rect._corner_2.y
-  }
-
-  public normalize(): Rectangle {
-    let left = this.left;
-    let top = this.top;
-    let width = this.width;
-    let height = this.height;
-
-    if (width < 0) {
-      width *= -1;
-      left -= width;
-    }
-
-    if (height < 0) {
-      height *= -1;
-      top -= height;
-    }
-
-    const corner_tl = new Vector2D(left, top);
-    const size = new Vector2D(width, height);
-
-    return new Rectangle(corner_tl, corner_tl.plus(size));
+    return point.x >= this.origin.x &&
+      point.y >= this.origin.y &&
+      point.x <= this.corner.x &&
+      point.y <= this.corner.y
   }
 }
diff --git a/ui/tests/unit/rectangle.spec.ts b/ui/tests/unit/rectangle.spec.ts
index 3988c6f..dc2c1fe 100644
--- a/ui/tests/unit/rectangle.spec.ts
+++ b/ui/tests/unit/rectangle.spec.ts
@@ -1,4 +1,4 @@
-import { Vector2D } from '@/components/rects/rectangles';
+import { Rectangle, Vector2D } from '@/components/rects/rectangles';
 import { expect } from "chai";
 
 describe("Vector Tests", () => {
@@ -21,3 +21,53 @@ describe("Vector Tests", () => {
     expect(v2.y).to.equal(-2);
   });
 });
+
+describe("Vector Tests", () => {
+  const v1 = new Vector2D(1, 2);
+  const v2 = new Vector2D(4, 6);
+
+
+  const r1 = new Rectangle(v1, v2);
+  const r2 = new Rectangle(v2, v1);
+
+  it("should create a rectangle", () => {
+    expect(r1.left).to.equal(1);
+    expect(r1.top).to.equal(2);
+    expect(r1.width).to.equal(3);
+    expect(r1.height).to.equal(4);
+  });
+
+  it("should create the same rectangle backwards", () => {
+    expect(r2.left).to.equal(1);
+    expect(r2.top).to.equal(2);
+    expect(r2.width).to.equal(3);
+    expect(r2.height).to.equal(4);
+  });
+
+  it("should create the same rectangle transposed", () => {
+    const v1t = new Vector2D(v1.x, v2.y);
+    const v2t = new Vector2D(v2.x, v1.y);
+    const rt = new Rectangle(v1t, v2t);
+
+    expect(rt.left).to.equal(1);
+    expect(rt.top).to.equal(2);
+    expect(rt.width).to.equal(3);
+    expect(rt.height).to.equal(4);
+  });
+
+  it("should contain itself", () => {
+    expect(r1.contains(v1)).true;
+    expect(r1.contains(v2)).true;
+
+    expect(r1.contains(r1.origin)).true;
+    expect(r1.contains(r1.corner)).true;
+
+    const vmid = new Vector2D((v1.x + v2.x) / 2, (v1.y + v2.y) / 2);
+    expect(r1.contains(vmid)).true;
+  });
+
+  it("should not contain certain points", () => {
+    expect(r1.contains(new Vector2D(0, 0))).false;
+    expect(r1.contains(new Vector2D(100, 100))).false;
+  });
+});
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