/*
# ---------------------------------------------------------------------
#
# Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
#                        pour la Sante)
# Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
# Previous Authors : Laurent Guigues, Jean-Pierre Roux
# CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
#
#  This software is governed by the CeCILL-B license under French law and
#  abiding by the rules of distribution of free software. You can  use,
#  modify and/ or redistribute the software under the terms of the CeCILL-B
#  license as circulated by CEA, CNRS and INRIA at the following URL
#  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
#  or in the file LICENSE.txt.
#
#  As a counterpart to the access to the source code and  rights to copy,
#  modify and redistribute granted by the license, users are provided only
#  with a limited warranty  and the software's author,  the holder of the
#  economic rights,  and the successive licensors  have only  limited
#  liability.
#
#  The fact that you are presently reading this means that you have had
#  knowledge of the CeCILL-B license and that you accept its terms.
# ------------------------------------------------------------------------
*/

#include "creaVtkHeartAngles.h"
#include <math.h>
#include <iostream>

creaVtkHeartAngles::creaVtkHeartAngles()
{
}

creaVtkHeartAngles::~creaVtkHeartAngles()
{
}

double creaVtkHeartAngles::alpha (double P0a, double P0b,double P0c, double vx, double vy, double vz, double vxp, double vyp, double vzp)
{
	double a=P0a,b=P0b,c=P0c;
	double x=vx,y=vy,z=vz;
	double xp=vxp,yp=vyp,zp=vzp;
	double alpha;

//Calcular el ángulo que forman las rectas, sabiendo sus vectores directores.
	double cosAlpha = ( ( (x-a)*(xp-a) )+( (y-b)*(yp-b) )+( (z-c)*(zp-c) ) )/sqrt((( (pow(x,2.0)-pow(a,2.0)) + (pow(y,2.0)-pow(b,2.0)) + (pow(z,2.0)-pow(c,2.0)) )*( (pow(xp,2.0)-pow(a,2.0)) + (pow(yp,2.0)-pow(b,2.0)) + (pow(zp,2.0)-pow(c,2.0)) ) ));
	
	alpha = (180 * acos(fabs(cosAlpha)))/M_PI;
	//std::cout << "Angulo Alpha: " << alpha << std::endl; 
	double ent = floor(alpha);
	double al = alpha - ent;
	double min = al * 60;
	//std::cout << "minutos: " << min << std::endl;
	std::cout << "Grados: "<< ent <<" minutos: " << floor(min) << std::endl;
	return alpha;
}

double creaVtkHeartAngles::beta (double P0a, double P0b,double P0c, double P3x, double P3y, double P3z, double P4x, double P4y, double P4z)
{
	double a=P0a,b=P0b,c=P0c;
	double x=P3x,y=P3y,z=P3z;
	double xp=P4x,yp=P4y,zp=P4z;
	double beta;

//Calcular el ángulo que forman las rectas, sabiendo sus vectores directores.
	double cosBeta = ( ( (x-a)*(xp-a) )+( (y-b)*(yp-b) )+( (z-c)*(zp-c) ) )/sqrt((( (pow(x,2.0)-pow(a,2.0)) + (pow(y,2.0)-pow(b,2.0)) + (pow(z,2.0)-pow(c,2.0)) )*( (pow(xp,2.0)-pow(a,2.0)) + (pow(yp,2.0)-pow(b,2.0)) + (pow(zp,2.0)-pow(c,2.0)) ) ));
	
	beta = (180 * acos(fabs(cosBeta)))/M_PI;
	//std::cout << "Angulo Beta: " << beta << std::endl; 
	double ent = floor(beta);
	double al = beta - ent;
	double min = al * 60;
	//std::cout << "minutos: " << min << std::endl;
	std::cout << "Grados: "<< ent <<" minutos: " << floor(min) << std::endl;
	return beta;
}

double * creaVtkHeartAngles::vectorProjection (double plX, double plY, double plZ, double nX, double nY, double nZ, double vX, double vY, double vZ)
{
	//punto del plano
	double plx=plX, ply=plY, plz=plZ;
	//normalPlano
	double nx=nX, ny=nY, nz=nZ;
	//vector V
	double vx=vX, vy=vY, vz=vZ;

	//distancia del punto al plano
	double dist;
	//vector proyectado	
	double vpx, vpy, vpz;
	double proj [3];
	
	dist = ply - vy;
	//std::cout << dist << std
	vpx = vx - (dist * nx);
	vpy = vy - (dist * ny);
	vpz = vz - (dist * nz);
	
	proj[0]=vpx;
	proj[1]=vpy;
	proj[2]=vpz;

	return proj;
}

double *creaVtkHeartAngles::intersectionPlaneLine(double plx1, double ply1, double plz1, double plx2, double ply2, double plz2, double plx3, double ply3, double plz3, double px1, double py1, double pz1,double px2, double py2, double pz2)
{
	double puntoCorte[3];

	double Plx1 = plx1, Ply1 = ply1, Plz1 = plz1, Plx2 = plx2, Ply2 = ply2, Plz2 = plz2, Plx3 = plx3, Ply3 = ply3, Plz3 = plz3;
	double Px1 = px1, Py1 = py1, Pz1 = pz1, Px2 = px2, Py2 = py2, Pz2 = pz2;

	//Calculo del plano

	double aX = ((Ply2-Ply1)*(Plz3-Plz1)-(Ply3-Ply1)*(Plz2-Plz1));
	double a = (Plx1)*((Ply2-Ply1)*(Plz3-Plz1)-(Ply3-Ply1)*(Plz2-Plz1));

	double bX = ((Plx2-Plx1)*(Plz3-Plz1)-(Plx3-Plx1)*(Plz2-Plz1));
	double b = (Ply1)*((Plx2-Plx1)*(Plz3-Plz1)-(Plx3-Plx1)*(Plz2-Plz1));

	double cX = ((Plx2-Plx1)*(Ply3-Ply1)-(Plx3-Plx1)*(Ply2-Ply1));
	double c = (Plz1)*((Plx2-Plx1)*(Ply3-Ply1)-(Plx3-Plx1)*(Ply2-Ply1));

	double r = a + b + c;
	std::cout << "ecuacion: " << aX << "," << a << "," << bX << "," << b << "," << cX << "," << c << std::endl;
	std::cout << "r: " << r << std::endl;

	//Calculo del vector director
	
	double vdirx = Px2 - Px1;
	double vdiry = Py2 - Py1;
	double vdirz = Pz2 - Pz1;
	
	std::cout << "vdirx: " << vdirx << " vdiry: " << vdiry << " vdirz: " << vdirz << std::endl;	

	//Se igualan las formulas del plano y la recta
	//x=Px1+vdirx, y=Py1+vdiry, z=Pz1+vdirz
	
	double eRes = aX*Px1 + bX*Py1 + cX*Pz1;
	double eResT = aX*vdirx + bX*vdiry + cX*vdirz;
	std::cout << "eRes: " << eRes << " eResT: " << eResT << std::endl;
	//Calculo del punto solucion
	if(eResT == 0){
		std::cout << "Soluciones infinitas... " << std::endl;
	}
	else {
		double t = (((-1)*eRes)-r)/eResT;

		double Px = Px1 + (t * vdirx);
		double Py = Py1 + (t * vdiry);
		double Pz = Pz1 + (t * vdirz);	

		std::cout << "px: " << Px << " py: " << Py << " pz: " << Pz << std::endl;	
	
		puntoCorte[0] = Px;
		puntoCorte[1] = Py;
		puntoCorte[2] = Pz;
	}
	return puntoCorte;
}

//---------------------------------------------
//Method template
//---------------------------------------------
/*
void creaVtkHeartAngles::FunctionName(int& parameterA)
{
  parameterA = 2 * parameterA;
  return;
}
*/