diff -r 792876306489 -r 4dd5bde4e777 sources/geometry.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sources/geometry.h	Wed Dec 10 19:17:00 2014 +0200
@@ -0,0 +1,140 @@
+/*
+	Copyright 2014 Teemu Piippo
+	All rights reserved.
+
+	Redistribution and use in source and binary forms, with or without
+	modification, are permitted provided that the following conditions
+	are met:
+
+	1. Redistributions of source code must retain the above copyright
+	   notice, this list of conditions and the following disclaimer.
+	2. Redistributions in binary form must reproduce the above copyright
+	   notice, this list of conditions and the following disclaimer in the
+	   documentation and/or other materials provided with the distribution.
+	3. Neither the name of the copyright holder nor the names of its
+	   contributors may be used to endorse or promote products derived from
+	   this software without specific prior written permission.
+
+	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+	TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+	PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
+	OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+	EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+	PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+	PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+	LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+	NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#pragma once
+
+struct Position
+{
+	int x;
+	int y;
+
+	Position (int x, int y) :
+		x (x),
+		y (y) {}
+
+	Position() :
+		x (0),
+		y (0) {}
+
+	inline METHOD operator< (const Position& other) const -> bool;
+	inline METHOD operator> (const Position& other) const -> bool;
+	inline METHOD operator== (const Position& other) const -> bool;
+	inline METHOD operator<= (const Position& other) const -> bool;
+	inline METHOD operator>= (const Position& other) const -> bool;
+	inline METHOD operator!= (const Position& other) const -> bool;
+};
+
+// -------------------------------------------------------------------------------------------------
+
+struct Size
+{
+	int width;
+	int height;
+
+	Size (int width, int height) :
+		width (width),
+		height (height) {}
+
+	Size() :
+		width (0),
+		height (0) {}
+
+	auto area() const -> int
+	{
+		return width * height;
+	}
+};
+
+// -------------------------------------------------------------------------------------------------
+
+struct Rectangle : Position, Size
+{
+	Rectangle (int x, int y, int width, int height) :
+		Position (x, y),
+		Size (width, height) {}
+
+	Rectangle() :
+		Position(),
+		Size() {}
+};
+
+// -------------------------------------------------------------------------------------------------
+
+inline METHOD
+Position::operator< (const Position& other) const -> bool
+{
+	if (y != other.y)
+		return y < other.y;
+
+	return x < other.x;
+}
+
+// -------------------------------------------------------------------------------------------------
+
+inline METHOD
+Position::operator> (const Position& other) const -> bool
+{
+	if (y != other.y)
+		return y > other.y;
+
+	return x > other.x;
+}
+
+// -------------------------------------------------------------------------------------------------
+
+inline METHOD
+Position::operator== (const Position& other) const -> bool
+{
+	return y == other.y and x == other.x;
+}
+
+// -------------------------------------------------------------------------------------------------
+
+inline METHOD
+Position::operator<= (const Position& other) const -> bool
+{
+	return not operator> (other);
+}
+
+// -------------------------------------------------------------------------------------------------
+
+inline METHOD
+Position::operator>= (const Position& other) const -> bool
+{
+	return not operator< (other);
+}
+
+// -------------------------------------------------------------------------------------------------
+
+inline METHOD
+Position::operator!= (const Position& other) const -> bool
+{
+	return not operator== (other);
+}