/*
# ---------------------------------------------------------------------
#
# 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>
#include "vtkDoubleArray.h"
#include "vtkStructuredPoints.h"
#include "vtkPointData.h"
#include "vtkDataArray.h"

creaVtkHeartAngles::creaVtkHeartAngles()
{
}

creaVtkHeartAngles::~creaVtkHeartAngles()
{
}

vtkImageData* creaVtkHeartAngles::getAlphaImage ()
{
	return alphaImage;
}

vtkImageData* creaVtkHeartAngles::getBetaImage ()
{
	return betaImage;
};

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)) ) ));
	double cosAlpha = ( ( x*xp )+( y*yp )+( z*zp ) )/(sqrt( pow(x,2.0) + pow(y,2.0) + pow(z,2.0) )*sqrt ( pow(xp,2.0) + pow(yp,2.0) + pow(zp,2.0) ) );
	
	alpha = (180 * acos(fabs(cosAlpha)))/M_PI;
	/*if((alpha<=90)&&(alpha>=0)){	
	std::cout << " " << a << " " << b <<" " << c <<" " << x <<" " << y <<" " << z <<" " << xp <<" " << yp <<" " << zp;	
	std::cout << " cosAlpha: " << cosAlpha; 	
	std::cout << " acos(fabs(cosalpha)) " << acos(fabs(cosAlpha));
	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 << "Alpha grados: "<< ent <<" minutos: " << floor(min) << " cos: " << cosAlpha << 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)) ) ));
	double cosBeta = ( ( x*xp )+( y*yp )+( z*zp ) )/(sqrt( pow(x,2.0) + pow(y,2.0) + pow(z,2.0) )*sqrt ( pow(xp,2.0) + pow(yp,2.0) + pow(zp,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 << "Beta grados: "<< ent <<" minutos: " << floor(min) << " cos: " << cosBeta << std::endl;
	return beta;
}

double * creaVtkHeartAngles::vectorProjection (double nX, double nY, double nZ, double vX, double vY, double vZ)
{
	
	//normalPlano
	double nx=nX, ny=nY, nz=nZ;
	//vector V
	double vx=vX, vy=vY, vz=vZ;

	//vector proyectado	
	double proj [3];
	
	proj[0]= vX - (nX*vX);
	proj[1]= vY - (nY*vY);
	proj[2]= vZ - (nZ*vZ);

	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;
}

void creaVtkHeartAngles::calculateImages (vtkImageData* image, double Px, double Py, double Pz, double Nx, double Ny, double Nz, double p2x, double p2y, double p2z)
{
std::cout << "CFT creaVtkHeartAngles::calculateImages Start"<<std::endl;
	 
	alphaImage = vtkImageData::New();
  alphaImage->SetExtent( image->GetExtent() );
  alphaImage->SetOrigin( image->GetOrigin() );
  alphaImage->SetSpacing( image->GetSpacing() );
  alphaImage->SetScalarTypeToUnsignedChar();
  alphaImage->SetNumberOfScalarComponents( image->GetNumberOfScalarComponents() );
  alphaImage->AllocateScalars();

	int ext[6];
	image->GetWholeExtent(ext);
	int dim[3];
  dim[0]=ext[1]-ext[0]+1;
  dim[1]=ext[3]-ext[2]+1;
  dim[2]=ext[5]-ext[4]+1;

	std::cout<<"dim0 "<<dim[0]<<" dim1 "<<dim[1]<<" dim2 "<<dim[2]<<std::endl;

	betaImage = vtkImageData::New();
  betaImage->SetExtent( image->GetExtent() );
  betaImage->SetWholeExtent( image->GetWholeExtent() );
  betaImage->SetOrigin( image->GetOrigin() );
  betaImage->SetSpacing( image->GetSpacing() );
  betaImage->SetScalarTypeToUnsignedChar();
  betaImage->SetNumberOfScalarComponents( image->GetNumberOfScalarComponents() );
  betaImage->AllocateScalars();

  unsigned char* pPix;
  pPix = (unsigned char*)image->GetScalarPointer();
  double a;
  double b;

  int numberOfPoints = dim[0]*dim[1]*dim[2];

  vtkDoubleArray *array;
  array = (vtkDoubleArray*) image->GetPointData()->GetVectors();
	//for(int i = 0 ; i < 8600 ; i++) {
	//		std::cout<<" arreglo #"<< i << " "<< array->GetValue(i)<<" tuple3 "<< array->GetTuple3(i)[0]<<"  "<< array->GetTuple3(i)[1]<<"  "<<array->GetTuple3(i)[2]<< std::endl;
	//}

  int i, j, k;
  int numTuple=0;


  for( k = 0 ; k < dim[2] ; k++ )
  {
    for( j = 0 ; j < dim[1] ; j++ )
    {
	for( i = 0 ; i < dim[0] ; i++ )
  	{
	  	//unsigned char* pPix = (unsigned char *)image->GetScalarPointer( i , j , k );

		double p1 = array->GetTuple3(numTuple)[0];
		double p2 = array->GetTuple3(numTuple)[1];
		double p3 = array->GetTuple3(numTuple)[2];
		numTuple++;
		
		//std::cout << " p1: " << p1 << " p2: " << p2 <<" p3: " << p3 << std::endl;
		//std::cout << " Px: " <<	 Px << " Py: " << Py <<" Pz: " << Pz << std::endl;
		//std::cout << " p2x: " << p2x << " p2y: " << p2y <<" p2z: " << p2z << std::endl;

		double* vecProj;
		vecProj = vectorProjection (Nx, Ny, Nz, p1, p2, p3);
			//std::cout << " vecProj[0]: " << vecProj[0] << " vecProj[1]: " << vecProj[1] <<" vecProj[2]: " << vecProj[2] << std::endl; 			
			a = alpha (Px, Py, Pz, 
							   p1, p2, p3, 
							   vecProj[0], vecProj[1], vecProj[2]);

			b = beta  (Px, Py, Pz, 
							   p2x, p2y, p2z, 
							   vecProj[0], vecProj[1], vecProj[2]);
			
			//if(a>=90&&a<=360) { std::cout  << " numTuple: " << numTuple << "         a: " << a << "          b: " << b << std::endl; }
			if(p1==0&&p2==0&&p3==0){
				unsigned char *zPtr1 = (unsigned char *) alphaImage->GetScalarPointer( i , j , k );
			 	*zPtr1 = (unsigned char)0;
				unsigned char *zPtr2 = (unsigned char *) betaImage->GetScalarPointer( i , j , k );
				*zPtr2 = (unsigned char)0;
			}else{
				unsigned char *zPtr1 = (unsigned char *) alphaImage->GetScalarPointer( i , j , k );
			 	*zPtr1 = (unsigned char)a;
				unsigned char *zPtr2 = (unsigned char *) betaImage->GetScalarPointer( i , j , k );
				*zPtr2 = (unsigned char)b; 
			}
			} //for i
  	} // for j
  } // for k

std::cout << "CFT creaVtkHeartAngles::calculateImages End"<<std::endl;
}