diff --git a/src/nostalgia/geo/CMakeLists.txt b/src/nostalgia/geo/CMakeLists.txt
index eda62d45..baf6fbba 100644
--- a/src/nostalgia/geo/CMakeLists.txt
+++ b/src/nostalgia/geo/CMakeLists.txt
@@ -1,12 +1,11 @@
 
 add_library(
 	NostalgiaGeo
-		bounds.cpp
-		vec.cpp
+        vec.cpp
 )
 
 target_link_libraries(
-	NostalgiaGeo
+	NostalgiaGeo PUBLIC
 		OxStd
 )
 
diff --git a/src/nostalgia/geo/bounds.cpp b/src/nostalgia/geo/bounds.cpp
deleted file mode 100644
index 14a63977..00000000
--- a/src/nostalgia/geo/bounds.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2016 - 2022 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#include "bounds.hpp"
-
-namespace nostalgia::geo {
-
-Bounds::Bounds(int x, int y, int w, int h) noexcept {
-	this->x = x;
-	this->y = y;
-	this->width = w;
-	this->height = h;
-}
-
-bool Bounds::intersects(const Bounds &o) const noexcept {
-	return o.x2() >= x && x2() >= o.x && o.y2() >= y && y2() >= o.y;
-}
-
-bool Bounds::contains(int x, int y) const noexcept {
-	return x >= this->x && y >= this->y && x <= x2() && y <= y2();
-}
-
-int Bounds::x2() const noexcept {
-	return x + width;
-}
-
-int Bounds::y2() const noexcept {
-	return y + height;
-}
-
-Point Bounds::pt1() const noexcept {
-	return {x, y};
-}
-
-Point Bounds::pt2() const noexcept {
-	return {x2(), y2()};
-}
-
-}
diff --git a/src/nostalgia/geo/bounds.hpp b/src/nostalgia/geo/bounds.hpp
index e735279d..4d6b2e66 100644
--- a/src/nostalgia/geo/bounds.hpp
+++ b/src/nostalgia/geo/bounds.hpp
@@ -4,6 +4,9 @@
 
 #pragma once
 
+#include <ox/model/def.hpp>
+#include <ox/std/error.hpp>
+
 #include "point.hpp"
 
 namespace nostalgia::geo {
@@ -20,36 +23,64 @@ class Bounds {
 
 		constexpr Bounds() noexcept = default;
 
-		Bounds(int x, int y, int w, int h) noexcept;
+		constexpr Bounds(int x, int y, int w, int h) noexcept;
 
 		[[nodiscard]]
-		bool intersects(const Bounds &other) const noexcept;
+		constexpr bool intersects(const Bounds &other) const noexcept;
 
 		[[nodiscard]]
-		bool contains(int x, int y) const noexcept;
+		constexpr bool contains(int x, int y) const noexcept;
 
 		[[nodiscard]]
-		int x2() const noexcept;
+		constexpr int x2() const noexcept;
 
 		[[nodiscard]]
-		int y2() const noexcept;
+		constexpr int y2() const noexcept;
 
 		[[nodiscard]]
-		Point pt1() const noexcept;
+		constexpr Point pt1() const noexcept;
 
 		[[nodiscard]]
-		Point pt2() const noexcept;
+		constexpr Point pt2() const noexcept;
 
 };
 
-template<typename T>
-constexpr ox::Error model(T *io, Bounds *obj) noexcept {
-	io->template setTypeInfo<Point>();
-	oxReturnError(io->field("x", &obj->x));
-	oxReturnError(io->field("y", &obj->y));
-	oxReturnError(io->field("width", &obj->width));
-	oxReturnError(io->field("height", &obj->height));
-	return OxError(0);
+constexpr Bounds::Bounds(int x, int y, int w, int h) noexcept {
+	this->x = x;
+	this->y = y;
+	this->width = w;
+	this->height = h;
 }
 
+constexpr bool Bounds::intersects(const Bounds &o) const noexcept {
+	return o.x2() >= x && x2() >= o.x && o.y2() >= y && y2() >= o.y;
+}
+
+constexpr bool Bounds::contains(int x, int y) const noexcept {
+	return x >= this->x && y >= this->y && x <= x2() && y <= y2();
+}
+
+constexpr int Bounds::x2() const noexcept {
+	return x + width;
+}
+
+constexpr int Bounds::y2() const noexcept {
+	return y + height;
+}
+
+constexpr Point Bounds::pt1() const noexcept {
+	return {x, y};
+}
+
+constexpr Point Bounds::pt2() const noexcept {
+	return {x2(), y2()};
+}
+
+oxModelBegin(Bounds)
+	oxModelField(x)
+	oxModelField(y)
+	oxModelField(width)
+	oxModelField(height)
+oxModelEnd()
+
 }
diff --git a/src/nostalgia/geo/point.hpp b/src/nostalgia/geo/point.hpp
index 0d4e4cc6..8b2b64a0 100644
--- a/src/nostalgia/geo/point.hpp
+++ b/src/nostalgia/geo/point.hpp
@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <ox/model/def.hpp>
 #include <ox/std/error.hpp>
 
 namespace nostalgia::geo {
@@ -175,18 +176,13 @@ constexpr bool Point::operator==(const Point &p) const noexcept {
 	return x == p.x && y == p.y;
 }
 
-
 constexpr bool Point::operator!=(const Point &p) const noexcept {
 	return x != p.x || y != p.y;
 }
 
-
-template<typename T>
-constexpr ox::Error model(T *io, Point *obj) noexcept {
-	io->template setTypeInfo<Point>();
-	oxReturnError(io->field("x", &obj->x));
-	oxReturnError(io->field("y", &obj->y));
-	return OxError(0);
-}
+oxModelBegin(Point)
+	oxModelField(x)
+	oxModelField(y)
+oxModelEnd()
 
 }
diff --git a/src/nostalgia/geo/size.hpp b/src/nostalgia/geo/size.hpp
index 67f14b1b..9a58ca31 100644
--- a/src/nostalgia/geo/size.hpp
+++ b/src/nostalgia/geo/size.hpp
@@ -145,6 +145,7 @@ constexpr Size Size::operator/(int i) const noexcept {
 	return out;
 }
 
+
 constexpr Size Size::operator+=(int i) noexcept {
 	width += i;
 	height += i;
@@ -169,22 +170,19 @@ constexpr Size Size::operator/=(int i) noexcept {
 	return *this;
 }
 
+
 constexpr bool Size::operator==(const Size &p) const noexcept {
 	return width == p.width && height == p.height;
 }
 
-
 constexpr bool Size::operator!=(const Size &p) const noexcept {
 	return width != p.width || height != p.height;
 }
 
 
-template<typename T>
-constexpr ox::Error model(T *io, Size *obj) noexcept {
-	io->template setTypeInfo<Size>();
-	oxReturnError(io->field("width", &obj->width));
-	oxReturnError(io->field("height", &obj->height));
-	return OxError(0);
-}
+oxModelBegin(Size)
+	oxModelField(width)
+	oxModelField(height)
+oxModelEnd()
 
 }