/*!\file ElementVector.cpp
 * \brief: implementation of the ElementVector object, used to plug values from element into global load
 */

/*Headers:*/
/*{{{*/
#ifdef HAVE_CONFIG_H
	#include <config.h>
#else
#error "Cannot compile with HAVE_CONFIG_H symbol! run configure first!"
#endif

#include <stdio.h>
#include <string.h>
#include "../classes.h"
#include "../../shared/shared.h"
#include "../../Container/Container.h"
#include "../../include/include.h"
/*}}}*/

/*ElementVector constructors and destructor*/
/*FUNCTION ElementVector::ElementVector(){{{*/
ElementVector::ElementVector(){

	this->nrows=0;
	this->values=NULL;
	this->fsize=0;
	this->flocaldoflist=NULL;
	this->fglobaldoflist=NULL;

}
/*}}}*/
/*FUNCTION ElementVector::ElementVector(ElementVector* pe1, ElementVector* pe2){{{*/
ElementVector::ElementVector(ElementVector* pe1, ElementVector* pe2){

	/*intermediaries*/
	int i,j,counter;
	int gsize,fsize,ssize;
	int* P=NULL;
	bool found;

	/*If one of the two matrix is NULL, we copy the other one*/
	if(!pe1 && !pe2){
		_error2_("Two input element matrices are NULL");
	}
	else if(!pe1){
		this->Init(pe2);
		return;
	}
	else if(!pe2){
		this->Init(pe1);
		return;
	}

	/*Initialize itransformation matrix pe[P[i]] = pe2[i]*/
	P=xNew<int>(pe2->nrows);

	/*1: Get the new numbering of pe2 and get size of the new matrix*/
	gsize=pe1->nrows;
	for(i=0;i<pe2->nrows;i++){
		found=false;
		for(j=0;j<pe1->nrows;j++){
			if(pe2->gglobaldoflist[i]==pe1->gglobaldoflist[j]){
				found=true; P[i]=j; break;
			}
		}
		if(!found){
			P[i]=gsize; gsize++;
		}
	}

	/*2: Initialize static fields*/
	this->nrows=gsize;

	/*Gset and values*/
	this->gglobaldoflist=xNew<int>(this->nrows);
	this->values=xNewZeroInit<IssmDouble>(this->nrows);
	for(i=0;i<pe1->nrows;i++){
		this->values[i] += pe1->values[i];
		this->gglobaldoflist[i]=pe1->gglobaldoflist[i];
	}
	for(i=0;i<pe2->nrows;i++){
		this->values[P[i]] += pe2->values[i];
		this->gglobaldoflist[P[i]]=pe2->gglobaldoflist[i];
	}

	/*Fset*/
	fsize=pe1->fsize;
	for(i=0;i<pe2->fsize;i++){
		if(P[pe2->flocaldoflist[i]] >= pe1->nrows) fsize++;
	}
	this->fsize=fsize;
	if(fsize){
		this->flocaldoflist =xNew<int>(fsize);
		this->fglobaldoflist=xNew<int>(fsize);
		for(i=0;i<pe1->fsize;i++){
			this->flocaldoflist[i] =pe1->flocaldoflist[i];
			this->fglobaldoflist[i]=pe1->fglobaldoflist[i];
		}
		counter=pe1->fsize;
		for(i=0;i<pe2->fsize;i++){
			if(P[pe2->flocaldoflist[i]] >= pe1->nrows){
				this->flocaldoflist[counter] =P[pe2->flocaldoflist[i]];
				this->fglobaldoflist[counter]=pe2->fglobaldoflist[i];
				counter++;
			}
		}
	}
	else{
		this->flocaldoflist=NULL;
		this->fglobaldoflist=NULL;
	}

	/*clean-up*/
	xDelete<int>(P);
}
/*}}}*/
/*FUNCTION ElementVector::ElementVector(ElementVector* pe1, ElementVector* pe2,ElementVector* pe3){{{*/
ElementVector::ElementVector(ElementVector* pe1, ElementVector* pe2,ElementVector* pe3){

	/*Concatenate all matrices*/
	ElementVector* pe12 =new ElementVector(pe1,pe2);
	ElementVector* pe123=new ElementVector(pe12,pe3);

	/*Initialize current object with this matrix*/
	this->Init(pe123);

	/*clean-up*/
	delete pe12;
	delete pe123;
}
/*}}}*/
/*FUNCTION ElementVector::ElementVector(Node** nodes,int numnodes,Parameters* parameters,int approximation){{{*/
ElementVector::ElementVector(Node** nodes,int numnodes,Parameters* parameters,int approximation){

	/*get Vector size and properties*/
	this->nrows=GetNumberOfDofs(nodes,numnodes,GsetEnum,approximation);

	/*fill values with 0: */
	this->values=xNewZeroInit<IssmDouble>(this->nrows);
	
	/*g list*/
	this->gglobaldoflist=GetGlobalDofList(nodes,numnodes,GsetEnum,approximation);

	/*Get fsize*/
	this->fsize=GetNumberOfDofs(nodes,numnodes,FsetEnum,approximation);
	this->flocaldoflist =GetLocalDofList( nodes,numnodes,FsetEnum,approximation);
	this->fglobaldoflist=GetGlobalDofList(nodes,numnodes,FsetEnum,approximation);
}
/*}}}*/
/*FUNCTION ElementVector::~ElementVector(){{{*/
ElementVector::~ElementVector(){
	
	xDelete<IssmDouble>(this->values);
	xDelete<int>(this->gglobaldoflist);
	xDelete<int>(this->flocaldoflist);
	xDelete<int>(this->fglobaldoflist);
}
/*}}}*/

/*ElementVector specific routines: */
/*FUNCTION ElementVector::AddToGlobal(Vector* pf){{{*/
void ElementVector::AddToGlobal(Vector* pf){

	int i;
	IssmDouble* localvalues=NULL;

	/*In debugging mode, check consistency (no NaN, and values not too big)*/
	this->CheckConsistency();

	if(this->fsize){
		/*first, retrieve values that are in the f-set from the g-set values vector: */
		localvalues=xNew<IssmDouble>(this->fsize);
		for(i=0;i<this->fsize;i++){
			localvalues[i]=this->values[this->flocaldoflist[i]];
		}
		/*add local values into global  vector, using the fglobaldoflist: */
		pf->SetValues(this->fsize,this->fglobaldoflist,localvalues,ADD_VAL);

		/*Free ressources:*/
		xDelete<IssmDouble>(localvalues);
	}
	
}
/*}}}*/
/*FUNCTION ElementVector::InsertIntoGlobal(Vector* pf){{{*/
void ElementVector::InsertIntoGlobal(Vector* pf){

	int i;
	IssmDouble* localvalues=NULL;

	if(this->fsize){
		/*first, retrieve values that are in the f-set from the g-set values vector: */
		localvalues=xNew<IssmDouble>(this->fsize);
		for(i=0;i<this->fsize;i++){
			localvalues[i]=this->values[this->flocaldoflist[i]];
		}
		/*add local values into global  vector, using the fglobaldoflist: */
		pf->SetValues(this->fsize,this->fglobaldoflist,localvalues,INS_VAL);

		/*Free ressources:*/
		xDelete<IssmDouble>(localvalues);
	}

}
/*}}}*/
/*FUNCTION ElementVector::CheckConsistency{{{*/
void ElementVector::CheckConsistency(void){
	/*Check element matrix values, only in debugging mode*/
#ifdef _ISSM_DEBUG_ 
	for (int i=0;i<this->nrows;i++){
		if (xIsNan<IssmDouble>(this->values[i])) _error2_("NaN found in Element Vector");
		if (fabs( this->values[i])>1.e+50) _error2_("Element Vector values exceeds 1.e+50");
	}
#endif
}
/*}}}*/
/*FUNCTION ElementVector::Echo{{{*/
void ElementVector::Echo(void){

	int i,j;
	_printLine_("Element Vector echo:");
	_printLine_("   nrows: " << nrows);
	_printLine_("   values:");
	for(i=0;i<nrows;i++){
		_printLine_(setw(4) << right << i << ": " << setw(10) << values[i]);
	}

	_printString_("   gglobaldoflist (" << gglobaldoflist << "): ");
	if(gglobaldoflist) for(i=0;i<nrows;i++) _printString_(" " << gglobaldoflist[i] );
	_printLine_(" ");

	_printLine_("   fsize: " << fsize);
	_printString_("   flocaldoflist  (" << flocaldoflist << "): ");
	if(flocaldoflist) for(i=0;i<fsize;i++) _printString_(" " << flocaldoflist[i] );
	_printLine_(" ");
	_printString_("   fglobaldoflist (" << fglobaldoflist << "): ");
	if(fglobaldoflist) for(i=0;i<fsize;i++) _printString_(" " << fglobaldoflist[i] );
	_printLine_(" ");
}
/*}}}*/
/*FUNCTION ElementVector::Init{{{*/
void ElementVector::Init(ElementVector* pe){

	_assert_(pe);

	this->nrows =pe->nrows;

	this->values=xNew<IssmDouble>(this->nrows);
	xMemCpy<IssmDouble>(this->values,pe->values,this->nrows);

	this->gglobaldoflist=xNew<int>(this->nrows);
	xMemCpy<int>(this->gglobaldoflist,pe->gglobaldoflist,this->nrows);

	this->fsize=pe->fsize;
	if(this->fsize){
		this->flocaldoflist=xNew<int>(this->fsize);
		xMemCpy<int>(this->flocaldoflist,pe->flocaldoflist,this->fsize);
		this->fglobaldoflist=xNew<int>(this->fsize);
		xMemCpy<int>(this->fglobaldoflist,pe->fglobaldoflist,this->fsize);
	}
	else{
		this->flocaldoflist=NULL;
		this->fglobaldoflist=NULL;
	}
}
/*}}}*/
/*FUNCTION ElementVector::SetValue{{{*/
void ElementVector::SetValue(IssmDouble scalar){

	int i;

	for(i=0;i<this->nrows;i++)this->values[i]=scalar;

}
/*}}}*/
