From 81787e9004377016236865e95b95707ed6cf1d0b Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Sun, 2 Mar 2008 12:23:48 +0000
Subject: initial (buggy) support for .map models

---
 src/math/plane3f.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/math/plane3f.h

(limited to 'src/math/plane3f.h')

diff --git a/src/math/plane3f.h b/src/math/plane3f.h
new file mode 100644
index 0000000..ddaef16
--- /dev/null
+++ b/src/math/plane3f.h
@@ -0,0 +1,50 @@
+/*
+   math/plane3f.h
+   This file is part of the Osirion project and is distributed under
+   the terms of the GNU General Public License version 2
+*/
+
+#ifndef __INCLUDED_MATH_PLANE3F_H__
+#define __INCLUDED_MATH_PLANE3F_H__
+
+#include "math/vector3f.h"
+
+namespace math
+{
+
+/** @brief A class representing a plane in 3d space
+ *  all points p(x, y, z) on the plane satisfy the general equation
+ *  x*a() + y*b() + z*c() + d() = 0
+ */
+class Plane3f
+{
+public:
+	/// a plane defined by 3 points in space
+	Plane3f(Vector3f const & point0, Vector3f const &point1, Vector3f const &point2);
+	/// copy constructor
+	Plane3f(Plane3f const & other);
+
+	/// normal of the plane, not normalized to lenght 1
+	inline Vector3f const & normal() const { return plane_normal; }
+	/// the points defining the plane. 
+	/// @param i 0 <= i < 3
+	inline Vector3f const & point(size_t i) const { return plane_point[i]; }
+
+	/// first parameter of the general equation
+	inline float a() const { return plane_normal[0]; }
+	/// second parameter of the general equation
+	inline float b() const { return plane_normal[1]; }
+	/// third param of the general equation
+	inline float c() const { return plane_normal[2]; }
+	/// fourth parameter of the general equation
+	inline float d() const { return pd; }
+
+private:
+	Vector3f 		plane_point[3];
+	Vector3f 		plane_normal;
+	float 			pd;
+};
+
+}
+
+#endif // __INCLUDED_MATH_PLANE3F_H__
-- 
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