From 28fcb06025c423cbd7edf6d50cd63330f8c1b9a2 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Tue, 19 Feb 2013 01:20:15 +0100
Subject: [PATCH] Added Plane class

Former-commit-id: fbbb1f230b4a9f85de0b56b4924ab65f74b4b654
---
 include/Nazara/Math/Plane.hpp |  54 +++++++++++
 include/Nazara/Math/Plane.inl | 163 ++++++++++++++++++++++++++++++++++
 2 files changed, 217 insertions(+)
 create mode 100644 include/Nazara/Math/Plane.hpp
 create mode 100644 include/Nazara/Math/Plane.inl

diff --git a/include/Nazara/Math/Plane.hpp b/include/Nazara/Math/Plane.hpp
new file mode 100644
index 000000000..598f77c24
--- /dev/null
+++ b/include/Nazara/Math/Plane.hpp
@@ -0,0 +1,54 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Mathematics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_PLANE_HPP
+#define NAZARA_PLANE_HPP
+
+#include <Nazara/Core/String.hpp>
+#include <Nazara/Math/Vector3.hpp>
+
+template<typename T>
+class NzPlane
+{
+	public:
+		NzPlane() = default;
+		NzPlane(T normalX, T normalY, T normalZ, T Distance);
+		NzPlane(const T plane[4]);
+		NzPlane(const NzVector3<T>& Normal, T Distance);
+		NzPlane(const NzVector3<T>& Normal, const NzVector3<T>& point);
+		NzPlane(const NzVector3<T>& point1, const NzVector3<T>& point2, const NzVector3<T>& point3);
+		template<typename U> explicit NzPlane(const NzPlane<U>& plane);
+		NzPlane(const NzPlane& plane) = default;
+		~NzPlane() = default;
+
+		T Distance(const NzVector3<T>& point);
+		T Distance(T x, T y, T z);
+
+		NzPlane& Set(T normalX, T normalY, T normalZ, T Distance);
+		NzPlane& Set(const T plane[4]);
+		NzPlane& Set(const NzPlane& plane);
+		NzPlane& Set(const NzVector3<T>& Normal, T Distance);
+		NzPlane& Set(const NzVector3<T>& Normal, const NzVector3<T>& point);
+		NzPlane& Set(const NzVector3<T>& point1, const NzVector3<T>& point2, const NzVector3<T>& point3);
+		template<typename U> NzPlane& Set(const NzPlane<U>& plane);
+
+		NzString ToString() const;
+
+		static NzPlane Lerp(const NzPlane& from, const NzPlane& to, T interpolation);
+
+		NzVector3<T> normal;
+		T distance;
+};
+
+template<typename T>
+std::ostream& operator<<(std::ostream& out, const NzPlane<T>& plane);
+
+typedef NzPlane<double> NzPlaned;
+typedef NzPlane<float> NzPlanef;
+
+#include <Nazara/Math/Plane.inl>
+
+#endif // NAZARA_PLANE_HPP
diff --git a/include/Nazara/Math/Plane.inl b/include/Nazara/Math/Plane.inl
new file mode 100644
index 000000000..5cfd7e5c6
--- /dev/null
+++ b/include/Nazara/Math/Plane.inl
@@ -0,0 +1,163 @@
+// Copyright (C) 2012 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Mathematics module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Core/StringStream.hpp>
+#include <Nazara/Math/Basic.hpp>
+#include <cstring>
+#include <Nazara/Core/Debug.hpp>
+
+#define F(a) static_cast<T>(a)
+
+template<typename T>
+NzPlane<T>::NzPlane(T normalX, T normalY, T normalZ, T D)
+{
+	Set(normalX, normalY, normalZ, D);
+}
+
+template<typename T>
+NzPlane<T>::NzPlane(const T plane[4])
+{
+	Set(plane);
+}
+
+template<typename T>
+NzPlane<T>::NzPlane(const NzVector3<T>& Normal, T D)
+{
+	Set(Normal, D);
+}
+
+template<typename T>
+NzPlane<T>::NzPlane(const NzVector3<T>& Normal, const NzVector3<T>& point)
+{
+	Set(Normal, point);
+}
+
+template<typename T>
+NzPlane<T>::NzPlane(const NzVector3<T>& point1, const NzVector3<T>& point2, const NzVector3<T>& point3)
+{
+	Set(point1, point2, point3);
+}
+
+template<typename T>
+template<typename U>
+NzPlane<T>::NzPlane(const NzPlane<U>& plane)
+{
+	Set(plane);
+}
+
+template<typename T>
+T NzPlane<T>::Distance(const NzVector3<T>& point)
+{
+	return normal.DotProduct(point) + distance;
+}
+
+template<typename T>
+T NzPlane<T>::Distance(T x, T y, T z)
+{
+	return Distance(NzVector3<T>(x, y, z));
+}
+
+template<typename T>
+NzPlane<T>& NzPlane<T>::Set(T normalX, T normalY, T normalZ, T D)
+{
+	distance = D;
+	normal.Set(normalX, normalY, normalZ);
+
+	return *this;
+}
+
+template<typename T>
+NzPlane<T>& NzPlane<T>::Set(const T plane[4])
+{
+	normal.Set(plane[0], plane[1], plane[2]);
+	distance = plane[3];
+
+	return *this;
+}
+
+template<typename T>
+NzPlane<T>& NzPlane<T>::Set(const NzPlane& plane)
+{
+	std::memcpy(this, &plane, sizeof(NzPlane));
+
+	return *this;
+}
+
+template<typename T>
+NzPlane<T>& NzPlane<T>::Set(const NzVector3<T>& Normal, T D)
+{
+	distance = D;
+	normal = Normal;
+
+	return *this;
+}
+
+template<typename T>
+NzPlane<T>& NzPlane<T>::Set(const NzVector3<T>& Normal, const NzVector3<T>& point)
+{
+	normal = Normal;
+	distance = -normal.DotProduct(point);
+
+	return *this;
+}
+
+template<typename T>
+NzPlane<T>& NzPlane<T>::Set(const NzVector3<T>& point1, const NzVector3<T>& point2, const NzVector3<T>& point3)
+{
+	NzVector3<T> edge1 = point2 - point1;
+	NzVector3<T> edge2 = point3 - point1;
+	normal = edge1.CrossProduct(edge2);
+	normal.Normalize();
+
+	distance = -normal.DotProduct(point3);
+
+	return *this;
+}
+
+template<typename T>
+template<typename U>
+NzPlane<T>& NzPlane<T>::Set(const NzPlane<U>& plane)
+{
+	normal.Set(plane.normal);
+	distance = F(plane.distance);
+
+	return *this;
+}
+
+template<typename T>
+NzString NzPlane<T>::ToString() const
+{
+	NzStringStream ss;
+
+	return ss << "Plane(Normal: " << normal << "; Distance: " << distance << ')';
+}
+
+template<typename T>
+NzPlane<T> NzPlane<T>::Lerp(const NzPlane& from, const NzPlane& to, T interpolation)
+{
+	#ifdef NAZARA_DEBUG
+	if (interpolation < F(0.0) || interpolation > F(1.0))
+	{
+		NazaraError("Interpolation must be in range [0..1] (Got " + NzString::Number(interpolation) + ')');
+		return NzPlane();
+	}
+	#endif
+
+	NzPlane plane;
+	plane.distance = NzLerp(from.distance, to.distance, interpolation);
+	plane.normal = NzVector3<T>::Lerp(from.normal, to.normal, interpolation);
+	plane.normal.Normalize();
+
+	return plane;
+}
+
+template<typename T>
+std::ostream& operator<<(std::ostream& out, const NzPlane<T>& plane)
+{
+	return out << plane.ToString();
+}
+
+#undef F
+
+#include <Nazara/Core/DebugOff.hpp>