Updated OSP-plugin

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+/*
+The MIT License (MIT)
+
+Copyright (c) 2012 Juan Ramón
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef Calibrate_h
+#define Calibrate_h
+
+	#include <math.h>
+
+	/**
+	 * \brief Library for coordinates transformations. Calculates the equivalent coordinates between both coordinate systems equatorial and horizontal.
+	 *
+	 * It's based on Toshimi Taki's matrix method for coordinates transformation: http://www.geocities.jp/toshimi_taki/matrix/matrix.htm
+	 * Contains the necessary methods for setting the initial time, the reference objects, the transformation matrix, and to 
+	 * calculate the equivalent vectors between both coordinate systems.
+	 */
+	class Calibrate{
+		private:
+
+			/**
+			 * Constant of multiplication for the solar and sidereal time relation.
+			 */
+			double _k;
+
+			/**
+			 * Initial timestamp for the observations.
+			 */			
+			double _t0;
+
+			/**
+			 * Indicators for definition of the three reference objects.
+			 */
+			bool _isSetR1, _isSetR2, _isSetR3;
+
+			/**
+			 * Auxiliary matrices.
+			 */
+			double _lmn1[3], _LMN1[3], _lmn2[3], _LMN2[3], _lmn3[3], _LMN3[3];
+
+			/**
+			 * Transformation matrix. Transform vectors from equatorial to horizontal system.
+			 */
+			double _T[3][3];
+
+			/**
+			 * Inverse transformation matrix. Transform vectors from horizontal to equatorial system.
+			 */
+			double _iT[3][3];
+
+			/**
+			 * If the three reference objects have been defined, it calculates the transformation matrix from them.
+			 */
+			void _setT();
+
+			/**
+			 * Obtains a vector in polar notation from the equatorial coordinates and the observation time.
+			 *
+			 * \param ar Right ascension.
+			 * \param dec Declination.
+			 * \param t Timestamp of the observation.
+			 * \param *EVC Pointer to array: Returns the three dimensional vector in polar notation.
+			 */
+			void _setEVC(double ar, double dec, double t, double* EVC);
+
+			/**
+			 * Obtains a vector in polar notation from the horizontal coordinates and observation time.
+			 *
+			 * \param ac Azimuth (horizontal coordinates).
+			 * \param alt Altitude (horizontal coordinates).
+			 * \param t Timestamp of the observation.
+			 * \param *HVC Pointer to array: Returns the three dimensional vector in polar notation.
+			 */			
+			void _setHVC(double ac, double alt, double* HVC);
+
+			/**
+			 * Calculates the 3x3 inverse matrix.
+			 * 
+			 * \param m[3][3] Input matrix.
+			 * \param res[3][3] Pointer to array: Returns the inverse matrix.
+			 */
+			void _inv(double m[3][3], double res[3][3]);
+
+			/**
+			 * Calculates the product of 3x3 matrices.
+			 * 
+			 * \param m1[3][3] Input matrix 1.
+			 * \param m2[3][3] Input matrix 2.
+			 * \param res[3][3] Pointer to array: Returns the result matrix.
+			 */
+			void _m_prod(double m1[3][3], double m2[3][3], double res[3][3]);
+
+		public:
+
+			/**
+			 * Class constructor.
+			 */
+			Calibrate();
+
+			/**
+			 * Sets the initial time.
+			 *
+			 * This parameter is used in order to consider time passing on horizontal coordinates system.
+			 *
+			 * \param t0 Unix Timestamp of the initial observation time.
+			 */
+			void setTime(double t0);
+
+			/**
+			 * Sets the first reference object from the coordinates in both coordinates systems for 
+			 * that object.
+			 *
+			 * \param ar Right Ascension (equatorial coordinates).
+			 * \param dec Declination (equatorial coordinates).
+			 * \param t Unix Timestamp of the Observation.
+			 * \param ac Azimuth (horizontal coordinates).
+			 * \param alt Altitude (horizontal coordinates).
+			 */
+			void setRef_1(double ar, double dec, double t, double ac, double alt);
+
+			/**
+			 * Sets the second reference object from the coordinates in both coordinates systems for 
+			 * that object.
+			 *
+			 * \param ar Right Ascension (equatorial coordinates).
+			 * \param dec Declination (equatorial coordinates).
+			 * \param t Unix Timestamp of the Observation.
+			 * \param ac Azimuth (horizontal coordinates).
+			 * \param alt Altitude (horizontal coordinates).
+			 */
+			void setRef_2(double ar, double dec, double t, double ac, double alt);
+
+			/**
+			 * Sets the third reference object from the coordinates in both coordinates systems for 
+			 * that object.
+			 *
+			 * \param ar Right Ascension (equatorial coordinates).
+			 * \param dec Declination (equatorial coordinates).
+			 * \param t Unix Timestamp of the Observation.
+			 * \param ac Azimuth (horizontal coordinates).
+			 * \param alt Altitude (horizontal coordinates).
+			 */
+			void setRef_3(double ar, double dec, double t, double ac, double alt);
+
+			/**
+			 * Third reference object calculated from the two others ones.
+			 * 
+			 * Calculates the cross product of the two first reference objects in both coordinates systems, in order 
+			 * to obtain the third one.
+			 * These two first objects must have 90º from each other, approximately (from 60º to 120º is enough to obtain
+			 * goods results).
+			 */
+			void autoRef_3();
+
+			/**
+			 * Indicates if the three reference objects has been calculated.
+			 * 
+			 * \return Boolean.
+			 */
+			bool isConfigured();
+
+
+			/**
+			 * Horizontal coordinates calculated from the equatorial ones and time.
+			 *
+			 * \param ar Right Ascension (equatorial coordinates).
+			 * \param dec Declination (equatorial coordinates)
+			 * \param t Unix Timestamp of the Observation.
+			 * \param *ac Pointer to double: Returns the azimuth (horizontal coordiantes).
+			 * \param *alt Pointer to double: Returns the altitude (horizontal coordinates).
+			 */
+			void getHCoords(double ar, double dec, double t, double *ac, double *alt);
+
+			/**
+			 * Equatorial coordinates calculated from the horizontal ones and time.
+			 *
+			 * \param ac Azimuth (horizontal coordinates).
+			 * \param alt Altitude (horizontal coordinates).
+			 * \param t Unix Timestamp of the Observation.
+			 * \param *ar Pointer to double: Returns the right ascension (equatorial coordinates).
+			 * \param *dec Pointer to double: Returns the declination (equatorial coordinates).
+			 */
+			void getECoords(double ac, double alt, double t, double *ar, double *dec);
+	};
+
+#endif