add vcglib

vcglib/vcg/space/old_point2.h

@@ -0,0 +1,145 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004-2016                                           \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+
+#ifndef VCG_USE_EIGEN
+#include "deprecated_point2.h"
+#else
+
+#ifndef __VCGLIB_POINT2
+#define __VCGLIB_POINT2
+
+#include "../math/eigen.h"
+// #include "point.h"
+
+namespace vcg{
+template<typename Scalar> class Point2;
+}
+
+namespace Eigen {
+template<typename Scalar> struct ei_traits<vcg::Point2<Scalar> > : ei_traits<Eigen::Matrix<Scalar,2,1> > {};
+template<typename XprType> struct ei_to_vcgtype<XprType,2,1,0,2,1>
+{ typedef vcg::Point2<typename XprType::Scalar> type; };
+}
+
+namespace vcg {
+
+/** \addtogroup space */
+/*@{*/
+/**
+		The templated class for representing a point in 2D space.
+		The class is templated over the Scalar class that is used to represent coordinates.
+		All the usual operator overloading (* + - ...) is present.
+	*/
+template <class _Scalar> class Point2 : public Eigen::Matrix<_Scalar,2,1>
+{
+//----------------------------------------
+// template typedef part
+// use it as follow: typename Point2<S>::Type instead of simply Point2<S>
+//----------------------------------------
+public:
+	typedef Eigen::Matrix<_Scalar,2,1> Type;
+//----------------------------------------
+// inheritence part
+//----------------------------------------
+private:
+	typedef Eigen::Matrix<_Scalar,2,1> _Base;
+public:
+	using _Base::coeff;
+	using _Base::coeffRef;
+	using _Base::setZero;
+	using _Base::data;
+	using _Base::V;
+
+	_EIGEN_GENERIC_PUBLIC_INTERFACE(Point2,_Base);
+	VCG_EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Point2)
+
+	/// empty constructor (does nothing)
+	inline Point2 () { }
+	/// x,y constructor
+	inline Point2 ( const Scalar nx, const Scalar ny ) : Base(nx,ny) {}
+	/// copy constructor
+	inline Point2(Point2 const & p) : Base(p) {}
+	template<typename OtherDerived>
+	inline Point2(const Eigen::MatrixBase<OtherDerived>& other) : Base(other) {}
+
+	/// cross product
+	// hm.. this is not really a cross product
+	inline Scalar operator ^ ( Point2 const & p ) const
+	{
+		return data()[0]*p.data()[1] - data()[1]*p.data()[0];
+	}
+
+	/// returns the angle with X axis (radiants, in [-PI, +PI] )
+	inline Scalar Angle() const
+	{
+		return math::Atan2(data()[1],data()[0]);
+	}
+	/// transform the point in cartesian coords into polar coords
+	inline Point2 & Cartesian2Polar()
+	{
+		Scalar t = Angle();
+		data()[0] = this->norm();
+		data()[1] = t;
+		return *this;
+	}
+	/// transform the point in polar coords into cartesian coords
+	inline Point2 & Polar2Cartesian()
+	{
+		Scalar l = data()[0];
+		data()[0] = (Scalar)(l*math::Cos(data()[1]));
+		data()[1] = (Scalar)(l*math::Sin(data()[1]));
+		return *this;
+	}
+	/// rotates the point of an angle (radiants, counterclockwise)
+	inline Point2 & Rotate( const Scalar rad )
+	{
+		Scalar t = data()[0];
+		Scalar s = math::Sin(rad);
+		Scalar c = math::Cos(rad);
+
+		data()[0] = data()[0]*c - data()[1]*s;
+		data()[1] =   t *s + data()[1]*c;
+
+		return *this;
+	}
+}; // end class definition
+
+typedef Point2<short>  Point2s;
+typedef Point2<int>	   Point2i;
+typedef Point2<float>  Point2f;
+typedef Point2<double> Point2d;
+
+// typedef Eigen::Matrix<short ,2,1> Point2s;
+// typedef Eigen::Matrix<int   ,2,1> Point2i;
+// typedef Eigen::Matrix<float ,2,1> Point2f;
+// typedef Eigen::Matrix<double,2,1> Point2d;
+// typedef Eigen::Matrix<short ,2,1> Vector2s;
+// typedef Eigen::Matrix<int   ,2,1> Vector2i;
+// typedef Eigen::Matrix<float ,2,1> Vector2f;
+// typedef Eigen::Matrix<double,2,1> Vector2d;
+
+/*@}*/
+} // end namespace
+#endif
+
+#endif