/*
 * TimePlot.cc
 *
 *  Created on: 22 nov. 2013
 *      Author: CS
 */

#include "TimePlot.hh"
#include "ParamsNode.hh"
#include "AxesNode.hh"
#include "PlotOutput.hh"
#include "TimeUtil.hh"
#include "Parameter.hh"
#include "ParamInfo.hh"
#include "ParamTable.hh"
#include "ParamMgr.hh"
#include "ShadesTools.hh"
#include "AxisLegendManager.hh"
#include <fstream>

#include "DefaultTimeAxisDecorator.hh"
#include "TickMarkDecorator.hh"
#include "PlotLogger.hh"
#include "ParamMgr.hh"
#include "TimeUtil.hh"
#include "PlPlotUtil.hh"
#include "Range.hh"

#include <boost/format.hpp>

using namespace AMDA::Parameters;
using namespace AMDA::Info;

namespace plot {


QSASConfig* TimePlot::qsasconfig = NULL;

TimePlot::TimePlot(AMDA::Parameters::ParameterManager& manager,
		boost::shared_ptr<Panel> panel, TimeAxisDecorator* timeAxisDecorator /*= new DefaultTimeAxisDecorator()*/) :
		PanelPlotOutput(manager, panel), _startDateDrawn(false) {
	setTimeAxisDecorator(std::shared_ptr<TimeAxisDecorator>(timeAxisDecorator));
}

TimePlot::~TimePlot() {
	if (qsasconfig != NULL) {
		free(qsasconfig);
		qsasconfig = nullptr;
	}
}


TimeAxis* TimePlot::getTimeAxis(){
	std::string lAxisId = getXAxisId();
	boost::shared_ptr<Axis> xAxis = _panel->getAxis(lAxisId);
	if (xAxis.get() == nullptr) {
		std::stringstream lError;
		lError << "TimePlot::apply" << ": time axis with id '" << lAxisId << "' not found.";
		BOOST_THROW_EXCEPTION(PanelPlotOutputException() << AMDA::ex_msg(lError.str()));
	}
	return dynamic_cast<TimeAxis*>(xAxis.get());
}

void TimePlot::preparePlotArea(double startTime, double stopTime, int intervalIndex) {
	// dump properties for test
	const char* lBuildType=getenv("BUILD_TYPE");
	if(lBuildType && std::string(lBuildType) == "Debug") {
		std::ofstream out("timePlot.txt");
		dump(out);
		out.close();
	}

	// Configure Series to draw on axis by checking which color to use and
	// number of series to draw on a same axis.
	configureSeriesAxis();

	configureAxisLegend();

	configureSpectroAxis();

	configureParamsLegend(startTime,stopTime,intervalIndex);

	// configure X axis
	getTimeAxisDecorator()->configure(this, getTimeAxis(), startTime, stopTime, _pParameterValues);
	getTimeAxis()->_used = true;
	_pls->timefmt(getTimeAxisDecorator()->getPlFormat().c_str());

	PanelPlotOutput::preparePlotArea(startTime,stopTime,intervalIndex);
}

bool TimePlot::draw(double startTime, double stopTime, int intervalIndex,
		bool isFirstInterval, bool isLastInterval) {

	bool dataPloted = PanelPlotOutput::draw(startTime,stopTime,intervalIndex,isFirstInterval,isLastInterval);

	// Draw start date
	if (!_startDateDrawn /*&& getTimeAxis()->_used*/)
		drawStartDate (getTimeAxis(), startTime,stopTime);
	_startDateDrawn = true;
	return dataPloted;
}


void TimePlot::calculatePlotArea(Bounds& bounds_) {
	PanelPlotOutput::calculatePlotArea(bounds_);
	// decorator is responsible of reserving extra space for what it manage (labels for instance).
	getTimeAxisDecorator()->updatePlotArea(this, getTimeAxis(), bounds_);
}


void TimePlot::configureSeriesAxis() {
	// map<YAxisId, userRangeDefined>
	std::map<std::string, Range> lAxisRange;
	Range lColorAxeRange;
	SeriesProperties lSeriesProperties;

	boost::shared_ptr<ColorAxis> lZAxis = _panel->getColorAxis();

	// Parse each parameter to define on which axis to draw series.
	for (auto param: _parameterAxesList) {
		// Get number of series to draw
		// For each index of parameter identify to which axis series must be drawn.
		for(auto lSeriesProperties: param.getYSeriePropertiesList()) {
			if(!lSeriesProperties.hasYAxis()){
				continue;
			}
			boost::shared_ptr<Axis> lYAxis = _panel->getAxis(lSeriesProperties.getYAxisId());
			if (lYAxis.get() == nullptr) {
				std::stringstream lError;
				lError << "TimePlot::configureSeriesAxis" << ": Y axis with id '" << lSeriesProperties.getYAxisId() << "' not found.";
				BOOST_THROW_EXCEPTION(PanelPlotOutputException() << AMDA::ex_msg(lError.str()));
			}

			lYAxis->_used = true;
			Range lRange(lYAxis->getRange());
			// If range status for this axis is set by the user do not update range "automatically".
			if (isnan(lRange.getMin()) && isnan(lRange.getMax())) {
				Range lEstimatedRange(lAxisRange[lYAxis->_id]);
				for (auto index : lSeriesProperties.getIndexList(_pParameterValues)) {
					Range lParamIndexRange(
							(*_pParameterValues)[lSeriesProperties.getParamId()].getMin(index),
							(*_pParameterValues)[lSeriesProperties.getParamId()].getMax(index));

					ErrorBarProperties & errBarProp = lSeriesProperties.getErrorBarProperties();

					// Update lParamIndexRange depending on the use of ErrorBars on the plot
					if (errBarProp.getErrorMinMax() != nullptr) {
						Range lParamMinRange(
								(*_pParameterValues)[errBarProp.getErrorMinMax()->getUsedParamMin()].getMin(-1),
								(*_pParameterValues)[errBarProp.getErrorMinMax()->getUsedParamMin()].getMax(-1));
						Range lParamMaxRange(
								(*_pParameterValues)[errBarProp.getErrorMinMax()->getUsedParamMax()].getMin(-1),
								(*_pParameterValues)[errBarProp.getErrorMinMax()->getUsedParamMax()].getMax(-1));

						if (lParamMinRange.getMin() < lParamIndexRange.getMin())
							lParamIndexRange.setMin(lParamMinRange.getMin());
						if (lParamMinRange.getMax() > lParamIndexRange.getMax())
							lParamIndexRange.setMax(lParamMinRange.getMax());

						if (lParamMaxRange.getMin() < lParamIndexRange.getMin())
							lParamIndexRange.setMin(lParamMaxRange.getMin());
						if (lParamMaxRange.getMax() > lParamIndexRange.getMax())
							lParamIndexRange.setMax(lParamMaxRange.getMax());
					}

					if (isnan(lEstimatedRange.getMin()) && isnan(lEstimatedRange.getMax())) {
						lEstimatedRange.setMin(lParamIndexRange.getMin());
						lEstimatedRange.setMax(lParamIndexRange.getMax());
					} else {
						lEstimatedRange.setMin(std::min(lEstimatedRange.getMin(), lParamIndexRange.getMin()));
						lEstimatedRange.setMax(std::max(lEstimatedRange.getMax(), lParamIndexRange.getMax()));
					}
				}

				lEstimatedRange._extend = lRange._extend;
				lAxisRange[lYAxis->_id] = lEstimatedRange;
			}

			// Set ZAxis range if a color param is defined for this serie
			if (lZAxis != nullptr)
			{
				if (!lSeriesProperties.getColorParamId().empty())
				{
					lZAxis->_used = true;
					Range lRange(lZAxis->getRange());
					ParameterAxes* colorSerieParameterAxes = getParameterAxesByColorSerieId(lSeriesProperties.getColorSerieId());
					if (colorSerieParameterAxes == NULL)
						continue;
					ColorSeriesProperties& colorSerieProp = colorSerieParameterAxes->getColorSeriePropertiesById(lSeriesProperties.getColorSerieId());
					// If range status for this axis is set by the user do not update range "automatically".
					if (isnan(lRange.getMin()) && isnan(lRange.getMax())) {
						Range lEstimatedRange(lColorAxeRange);
						Range lParamIndexRange(
							(*_pParameterValues)[lSeriesProperties.getColorParamId()].getMin(
								colorSerieProp.getIndex()),
							(*_pParameterValues)[lSeriesProperties.getColorParamId()].getMax(
								colorSerieProp.getIndex()));

						if (isnan(lEstimatedRange.getMin()) && isnan(lEstimatedRange.getMax())) {
							lEstimatedRange.setMin(lParamIndexRange.getMin());
							lEstimatedRange.setMax(lParamIndexRange.getMax());
						} else {
							lEstimatedRange.setMin(std::min(lEstimatedRange.getMin(), lParamIndexRange.getMin()));
							lEstimatedRange.setMax(std::max(lEstimatedRange.getMax(), lParamIndexRange.getMax()));
						}
						lEstimatedRange._extend = lRange._extend;
						lColorAxeRange = lEstimatedRange;
					}
				}
			}
		}
	}

	// Update range of axis. Done after because, axis range may be processed in several pass (one for each series)
	for (auto lAxis: lAxisRange) {
		boost::shared_ptr<Axis> lYAxis = _panel->getAxis(lAxis.first);
		Range lRange(lAxis.second);
		fixRange(lRange, lYAxis-> _scale == Axis::Scale::LOGARITHMIC);
		lYAxis->setRange(lRange);
	}

	if (lZAxis != nullptr && lColorAxeRange.isSet()) {
		fixRange(lColorAxeRange, lZAxis->_scale == Axis::Scale::LOGARITHMIC);
		lZAxis->setRange(lColorAxeRange);
	}
}

void TimePlot::configureAxisLegend() {
	// Y axis
	AxisLegendManager::configureYAxisLegendForSpectro(this);
	AxisLegendManager::configureYAxisLegendForSeries(this);

	// Z axis
	AxisLegendManager::configureColorAxisLegendForSpectro(this);
	AxisLegendManager::configureColorAxisLegendForSeries(this);
}

void TimePlot::configureSpectroAxis() {
		// Parse each parameter to define on which axis to draw spectro
	for (auto param: _parameterAxesList) {
		std::shared_ptr<SpectroProperties> spectroPropertiesPtr = param.getSpectroProperties();
		if (spectroPropertiesPtr == nullptr)
			return; //no spectro defined

		if(!spectroPropertiesPtr->hasYAxis())
			return;

		LOG4CXX_DEBUG(gLogger, "Spectro Y axis is " << spectroPropertiesPtr->getYAxisId());
		boost::shared_ptr<Axis> lYAxis = _panel->getAxis(spectroPropertiesPtr->getYAxisId());
		if (lYAxis.get() == nullptr) {
			std::stringstream lError;
			lError << "TimePlot::configureSpectroAxis" << ": Y axis with id '" << spectroPropertiesPtr->getYAxisId() << "' not found.";
			BOOST_THROW_EXCEPTION(PanelPlotOutputException() << AMDA::ex_msg(lError.str()));
		}

		lYAxis->_used = true;

		//set Z axis range
		boost::shared_ptr<Axis> lZAxis = _panel->getAxis(spectroPropertiesPtr->getZAxisId());
		if (lZAxis.get() == nullptr) {
			std::stringstream lError;
			lError << "TimePlot::configureSpectroAxis" << ": Z axis with id '" << spectroPropertiesPtr->getZAxisId() << "' not found.";
			BOOST_THROW_EXCEPTION(PanelPlotOutputException() << AMDA::ex_msg(lError.str()));
		}

		lZAxis->_used = true;

		ParameterSPtr p = _parameterManager.getParameter(param._originalParamId);
		int parameterDimension;
		if (spectroPropertiesPtr->getRelatedDim() == 0)
			parameterDimension = (*_pParameterValues)[spectroPropertiesPtr->getParamId()].getDim1Size();
		else
			parameterDimension = (*_pParameterValues)[spectroPropertiesPtr->getParamId()].getDim2Size();


		//set Y axis range
		Range lYAxisRange = lYAxis->Axis::getRange();
		AMDA::Info::ParamInfoSPtr paramInfo = AMDA::Info::ParamMgr::getInstance()->getParamInfoFromId(p->getInfoId());
		if (isnan(lYAxisRange.getMin()) && isnan(lYAxisRange.getMax()))
		{
			boost::shared_ptr<AMDA::Info::ParamTable> tableSPtr;
			if (paramInfo != nullptr)
				tableSPtr = paramInfo->getTable(spectroPropertiesPtr->getRelatedDim());

			if (tableSPtr == nullptr)
			{
				LOG4CXX_DEBUG(gLogger, "No table defined => use index");
				lYAxisRange.setMin(std::min(0.,lYAxisRange.getMin()));
				lYAxisRange.setMax(std::max((double)parameterDimension,lYAxisRange.getMax()));
			}
			else
			{
				AMDA::Info::t_TableBound crtBound;
				if (!tableSPtr->isVariable(&_parameterManager))
				{
					for (int i = 0; i < parameterDimension; ++i)
					{
						crtBound = tableSPtr->getBound(&_parameterManager, i);
						if (!std::isnan(crtBound.min))
						{
							if (!((lYAxis->_scale == Axis::Scale::LOGARITHMIC) && (crtBound.min <= 0)))
								lYAxisRange.setMin(std::min(crtBound.min,lYAxisRange.getMin()));
						}
						if (!std::isnan(crtBound.max))
						{
							if (!((lYAxis->_scale == Axis::Scale::LOGARITHMIC) && (crtBound.max <= 0)))
								lYAxisRange.setMax(std::max(crtBound.max,lYAxisRange.getMax()));
						}
					}
				}
				else
				{
					//Variable table => we need to loop under all records to find axis min & max values
					for (int i = 0; i < (*_pParameterValues)[spectroPropertiesPtr->getParamId()].getSize(); ++i)
					{
						std::map<std::string, std::vector<double>> paramsTableData;
						for (std::map<std::string, std::string>::iterator it = spectroPropertiesPtr->getTableParams().begin(); it != spectroPropertiesPtr->getTableParams().end(); ++it)
						{
							ParameterData& data = (*_pParameterValues)[it->second];
							std::vector<double> paramTableValues;
							for (int j = 0; j < data.getDim1Size(); ++j)
							{
								if (i < data.getSize()) {
									double* values = data.getValues(AMDA::Common::ParameterIndexComponent(j), i);
									paramTableValues.push_back((*values));
								}
							}
							paramsTableData[it->first] = paramTableValues;
						}
						for (int j = 0; j < parameterDimension; ++j)
						{
							crtBound = tableSPtr->getBound(&_parameterManager, j, &paramsTableData);
							if (!std::isnan(crtBound.min))
							{
								if (!((lYAxis->_scale == Axis::Scale::LOGARITHMIC) && (crtBound.min <= 0)))
									lYAxisRange.setMin(std::min(crtBound.min,lYAxisRange.getMin()));
							}
							if (!std::isnan(crtBound.max))
							{
								if (!((lYAxis->_scale == Axis::Scale::LOGARITHMIC) && (crtBound.max <= 0)))
									lYAxisRange.setMax(std::max(crtBound.max,lYAxisRange.getMax()));
							}
						}
					}
				}
			}
		}

		//do not extend the axis
		lYAxisRange._extend = false;
	
		fixRange(lYAxisRange, lYAxis->_scale == Axis::Scale::LOGARITHMIC);
	
		lYAxis->setRange(lYAxisRange);

		LOG4CXX_DEBUG(gLogger, "Y axis range : min = " << lYAxisRange.getMin() << ", max = " << lYAxisRange.getMax());

		Range lParamRange = lZAxis->Axis::getRange();
		if (isnan(lParamRange.getMin()) && isnan(lParamRange.getMax()))
		{
			//auto range
			for(auto index : spectroPropertiesPtr->getIndexes()) {
				//compute global range for all indexes
				double minVal, maxVal;
				if (lZAxis->_scale == Axis::Scale::LOGARITHMIC)
					minVal = (*_pParameterValues)[spectroPropertiesPtr->getParamId()].getMinStrictPos(index);
				else
					minVal = (*_pParameterValues)[spectroPropertiesPtr->getParamId()].getMin(index);
				maxVal = (*_pParameterValues)[spectroPropertiesPtr->getParamId()].getMax(index);
				if (!isnan(minVal))
					lParamRange.setMin(std::min(minVal,lParamRange.getMin()));
				//else
				//	lParamRange.setMin(0);
				if (!isnan(maxVal))
					lParamRange.setMax(std::max(maxVal,lParamRange.getMax()));
				//else
				//	lParamRange.setMax(10);
			}
			if (isnan(lParamRange.getMin()))
				lParamRange.setMin(0);
			if (isnan(lParamRange.getMax()))
				lParamRange.setMax(10);
		}
		else
			lParamRange._extend = false;

		//set z axis range
		fixRange(lParamRange, lZAxis->_scale == Axis::Scale::LOGARITHMIC);
		LOG4CXX_DEBUG(gLogger, "ZAxis range : ZMin = " << lParamRange.getMin() << ", ZMax = " << lParamRange.getMax());
		lZAxis->setRange(lParamRange);
	}
}

/**
 * @brief Identify if other side of the plot area need to be drawn or not.
 * @note A plot area side need to be drawn when there is no axis associated to it.
 */
std::string TimePlot::drawOppositeSide(boost::shared_ptr<Axis> pAxis){
	if( pAxis.get() == getTimeAxis() && getTimeAxis()->isOnlyTickmarks()){
		return "";
	}
	else{
		return PanelPlotOutput::drawOppositeSide(pAxis);
	}

}

void TimePlot::drawXAxis(boost::shared_ptr<Axis> pXAxis, PlWindow& pPlWindow, Bounds& pPlotAreaSize, TickConf& pTickConf){
	LOG4CXX_DEBUG(gLogger, "Drawing X axis ");
	// draw main axis...
	PanelPlotOutput::drawXAxis(pXAxis,pPlWindow, pPlotAreaSize, pTickConf);
	// delegate to decorator any extra drawing stuff it needs to perform...
	getTimeAxisDecorator()->draw(this,getTimeAxis(), _pls);

}

// Convert an X axis string value to a double X value assuming it's a DD_Time value
double TimePlot::convertXAxisValue(const std::string &value) {
	return DD_Time2Double (value.c_str());
}

ConstantLine * TimePlot::getConstantLineFromId (int serieId, int constantId, boost::shared_ptr<Axis>& yAxis) {
	for (auto parameter : _parameterAxesList) {
		for (auto serieProperties : parameter.getYSeriePropertiesList()) {
			if ((serieProperties.getId() == serieId) &&(serieProperties.hasYAxis() == true)) {
				yAxis = _panel->getAxis(serieProperties.getYAxisId());
				for (auto constantLine : yAxis->_constantLines) {
					if (constantLine->getId() == constantId) {
						return constantLine.get();
					}
				}
			}
		}
	}

	// ConstantId not found, we throw an exception
	std::stringstream lError;
	lError << "TimePlot::getConstantLineFromId : Unable to find constantId='" << constantId << "' for serieId='" << serieId << "'";
	BOOST_THROW_EXCEPTION(PanelPlotOutputException() << AMDA::ex_msg(lError.str()));
	return NULL;
}

bool TimePlot::getSeriePropertiesById(int serieId, SeriesProperties &rSerieProperties)
{
	for (auto parameter : _parameterAxesList) {
		for (auto serieProperties : parameter.getYSeriePropertiesList()) {
			if (serieProperties.getId() == serieId) {
				rSerieProperties = serieProperties;
				return true;
			}
		}
	}

	return false;
}



void TimePlot::mergeAndSortTime (	double *values1Time, int values1Nb,
									double *values2Time, int values2Nb,
									std::vector<double> &valuesTime) {

	// Build 2 vectors
	std::vector<double> v1(values1Time, values1Time + values1Nb);
	std::vector<double> v2(values2Time, values2Time + values2Nb);

	// Populate resulting vector
	valuesTime.insert( valuesTime.end(), v1.begin(), v1.end() );
	valuesTime.insert( valuesTime.end(), v2.begin(), v2.end() );

	// Sort and remove duplicates for the resulting vector
	sort (valuesTime.begin(), valuesTime.end());
	valuesTime.erase( unique( valuesTime.begin(), valuesTime.end() ), valuesTime.end() );
}

double TimePlot::getInterpolatedValue (double *values, double *valuesTime, int valuesNb, double atTime) {

	// get index of first time after given time_
	if(isnan(atTime)){
		return nan("");
	}

	double *pTime = valuesTime;

	for(int t=0; t<valuesNb; t++) {
		// No interpolation required
		if (*pTime == atTime){
			return values [t];
		}
		// Interpolation required
		if (*pTime >= atTime){
			if (t == 0) {
				return nan("");
			}
			else {
				double v1 = values [t-1];
				double v2 = values [t];
				double d1 = valuesTime [t-1];
				double d2 = valuesTime [t];
				// Return a linear interpolation of the value for the index
				return (v1 + (v2-v1) * (atTime-d1)/(d2-d1));
			}
		}
		pTime++;
	}
	return nan("");
}

bool TimePlot::intersect (	double xi, double y1i, double y2i,
							double xj, double y1j, double y2j,
							double *xInter) {

	// Simply checks if segment are above or below the other
	if ( ((y1i >= y2i) && (y1j >= y2j)) ||( (y1i <= y2i) && (y1j <= y2j)) ) {
		return false;
	}

	// Computes intersection point :
    // Compute a and b (y = a * x + b) for each segment
    double a1 = (y1j - y1i) / (xj - xi);
    double b1 = y1i - a1 * xi ;

    double a2 = (y2j - y2i) / (xj - xi);
    double b2 = y2i - a2 * xi ;

    // Compute intersection point (a1*x+b1 = a2*x+b2)
    *xInter = (b2-b1) / (a1-a2);

    return true;
}

void TimePlot::addIntersectionTime (double *values1, double *values1Time, int values1Nb,
									double *values2, double *values2Time, int values2Nb,
									std::vector<double> &valuesTime) {

	if (valuesTime.empty() == true)
		return;

	// For each time segment compute intersection if it exists
	std::vector<double> intersectionTime;

	double xi = valuesTime [0];
	double y1i = getInterpolatedValue (values1, values1Time, values1Nb, xi);
	double y2i = getInterpolatedValue (values2, values2Time, values2Nb, xi);

	for (size_t t=1; t<valuesTime.size(); t++) {
		double xj = valuesTime [t];
		double y1j = getInterpolatedValue (values1, values1Time, values1Nb, xj);
		double y2j = getInterpolatedValue (values2, values2Time, values2Nb, xj);

		double xInter;
		if (intersect (xi, y1i, y2i, xj, y1j, y2j, &xInter) == true) {
			intersectionTime.push_back(xInter);
		}

		// Next vector element
		xi = xj;
		y1i = y1j;
		y2i = y2j;
	}

	// Add intersections informations to the resulting values
	valuesTime.insert( valuesTime.end(), intersectionTime.begin(), intersectionTime.end() );

	// Sort and remove duplicates for the resulting vector
	sort (valuesTime.begin(), valuesTime.end());
	valuesTime.erase( unique( valuesTime.begin(), valuesTime.end() ), valuesTime.end() );
}

void TimePlot::drawFillArea (	double *values1, double *values1Time, int values1Nb,
								double *values2, double *values2Time, int values2Nb,
								std::vector<double> &valuesTime,
								bool colorGreaterSpecified, Color& colorGreater,
								bool colorLessSpecified, Color& colorLess,
								SeriesProperties &rSeriesProperties) {
	// Get X and Y axis.
	boost::shared_ptr<Axis> lXAxis(_panel->getAxis(rSeriesProperties.getXAxisId()));
	boost::shared_ptr<Axis> lYAxis(_panel->getAxis(rSeriesProperties.getYAxisId()));

	Range lXRange = getXAxisRange (rSeriesProperties, lXAxis);
	Range lYRange = getYAxisRange (rSeriesProperties, lYAxis);

	_pls->wind(lXRange.getMin(), lXRange.getMax(), lYRange.getMin(), lYRange.getMax());

	PLFLT x[4], y[4], deltai, deltaj;
	Color curColor;
	Color lInitialColor = changeColor(_pls, colorGreater, _panel->_page->_mode);

	for ( size_t i = 0; i < (valuesTime.size() - 1); i++ )
	{
		x[0] = valuesTime[i];
		x[1] = x[0];
		x[2] = valuesTime[i+1];
		x[3] = x[2];

		y[0] = getInterpolatedValue (values1, values1Time, values1Nb, valuesTime[i]);
		y[1] = getInterpolatedValue (values2, values2Time, values2Nb, valuesTime[i]);
		y[2] = getInterpolatedValue (values2, values2Time, values2Nb, valuesTime[i+1]);
		y[3] = getInterpolatedValue (values1, values1Time, values1Nb, valuesTime[i+1]);

		deltai = y[1] - y[0];
		deltaj = y[2] - y[3];

		// Set fill color depending on segment position
		if ( ((deltai > 0) && (fabs(deltai) > fabs(deltaj))) ||
			 ((deltaj > 0) && (fabs(deltaj) > fabs(deltai))) ) {
			// s1 above s2
			if (colorGreaterSpecified == true) {
				curColor = colorGreater;
			} else {
				continue;
			}
		}
		else if ( 	((deltai < 0) && (fabs(deltai) > fabs(deltaj))) ||
					((deltaj < 0) && (fabs(deltaj) > fabs(deltai))) ) {
			// s1 under s2
			if (colorLessSpecified == true) {
				curColor = colorLess;
			} else {
				continue;
			}
		} else {
			// Colinear segments, no fill required
			continue;
		}

		// Fill polygon using the given color
		changeColor(_pls, curColor, _panel->_page->_mode);
		_pls->fill(4, x, y);
    }

	// Restore color.
	restoreColor(_pls, lInitialColor, _panel->_page->_mode);
}

void TimePlot::drawFills(double startDate, double stopDate) {
	PanelPlotOutput::drawFills(startDate, stopDate);
	LOG4CXX_DEBUG(gLogger, "TimePlot::drawFills");

	SeriesProperties rSeriesProperties;

	double *values1 	= NULL;
	double *values1Time = NULL;
	int 	values1Nb	= 0;

	double *values2 	= NULL;
	double *values2Time = NULL;
	int 	values2Nb 	= 0;

	std::vector<double> valuesTime;

	// Drawing Fill Area located between Serie and Constant (horizontal) line
	for (auto fillSerieConstant : _panel->_fillSerieConstants) {

		// Retrieve serie parameter values for serieId
		if (!getSeriePropertiesById(fillSerieConstant->getSerieId(), rSeriesProperties))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawFills - Cannot find serie id " << fillSerieConstant->getSerieId());
			continue;
		}

		//get computed values for this serie and interval
		if (!getComputedValuesFromSerieAndInterval(startDate, stopDate, rSeriesProperties,
				rSeriesProperties.getIndex(), &values1, &values1Time, values1Nb))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawFills - Cannot get computed values for serie id " << fillSerieConstant->getSerieId());
			continue;
		}

		// Retrieve constantLine informations for these fill
		boost::shared_ptr<Axis> yAxis;
		ConstantLine *constantLine = getConstantLineFromId (	fillSerieConstant->getSerieId(),													fillSerieConstant->getConstantId(), yAxis);

		// Retrieve axis attachment


		// Build values2 values2Time array with 2 values : yConst & (first time, last time) for serie
		values2 = new double [2];
		values2Time = new double [2];

		values2 [0] = convertYAxisValue (constantLine->getValue());
		values2 [1] = convertYAxisValue (constantLine->getValue());

		if (yAxis->_scale == Axis::Scale::LOGARITHMIC) {
                        values2[0] = log10 (values2[0]);
                        values2[1] = log10 (values2[1]);
                }

		values2Time [0] = values1Time [0];
		values2Time [1] = values1Time [values1Nb-1];

		values2Nb = 2;

		// Build time vector by merging existing times and computing intersections, and draw it !
		mergeAndSortTime (values1Time, values1Nb, values2Time, values2Nb, valuesTime);
		addIntersectionTime (values1, values1Time, values1Nb, values2, values2Time, values2Nb, valuesTime);
		drawFillArea (values1, values1Time, values1Nb, values2, values2Time, values2Nb, valuesTime,
						fillSerieConstant->isColorGreaterSpecified(), fillSerieConstant->getColorGreater(),
						fillSerieConstant->isColorLessSpecified(), fillSerieConstant->getColorLess(),
						rSeriesProperties);

		delete [] values1;
		delete [] values2;
		delete [] values2Time;
	}

	// Drawing Fill Area located between first and second Serie
	for (auto fillSerieSerie : _panel->_fillSerieSeries) {
		// Retrieve serie parameter values for firstSerieId
		if (!getSeriePropertiesById(fillSerieSerie->getFirstSerieId(), rSeriesProperties))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawFills - Cannot find serie id " << fillSerieSerie->getFirstSerieId());
			continue;
		}

		//get computed values for this serie and interval
		if (!getComputedValuesFromSerieAndInterval(startDate, stopDate, rSeriesProperties,
				rSeriesProperties.getIndex(), &values1, &values1Time, values1Nb))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawFills - Cannot get computed values for serie id " << fillSerieSerie->getFirstSerieId());
			continue;
		}

		// Retrieve serie parameter values for secondSerieId
		if (!getSeriePropertiesById(fillSerieSerie->getSecondSerieId(), rSeriesProperties))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawFills - Cannot find serie id " << fillSerieSerie->getSecondSerieId());
			continue;
		}

		//get computed values for this serie and interval
		if (!getComputedValuesFromSerieAndInterval(startDate, stopDate, rSeriesProperties,
				rSeriesProperties.getIndex(), &values2, &values2Time, values2Nb))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawFills - Cannot get computed values for serie id " << fillSerieSerie->getSecondSerieId());
			continue;
		}

		// Build time vector by merging existing times and computing intersections, and draw it !
		mergeAndSortTime (values1Time, values1Nb, values2Time, values2Nb, valuesTime);
		addIntersectionTime (values1, values1Time, values1Nb, values2, values2Time, values2Nb, valuesTime);
		drawFillArea (values1, values1Time, values1Nb, values2, values2Time, values2Nb, valuesTime,
						fillSerieSerie->isColorGreaterSpecified(), fillSerieSerie->getColorGreater(),
						fillSerieSerie->isColorLessSpecified(), fillSerieSerie->getColorLess(),
						rSeriesProperties);

		delete [] values1;
		delete [] values2;
	}
}

void TimePlot::drawSeries(double startDate, double stopDate, int intervalIndex,
		std::string pParamId, SeriesProperties& pSeries,
		AMDA::Common::ParameterIndexComponent pParamIndex,
		ParameterAxes& param, bool moreThanOneSerieForAxis) {
	LOG4CXX_DEBUG(gLogger, "TimePlot::drawSeries - Drawing serie for parameter "<<pParamId<<"["<<pParamIndex.getDim1Index()<<","<<pParamIndex.getDim2Index()<<"]");
	// This will configure window, draw axes (if needed) and legend of axes.
	PanelPlotOutput::drawSeries(startDate, stopDate, intervalIndex, pParamId, pSeries, pParamIndex, param, moreThanOneSerieForAxis);

	if(!pSeries.hasYAxis())
		return;

	// Y axis may be missing (tickplot for example)
	std::string	yAxisId = pSeries.getYAxisId();
	if (yAxisId.empty())
		return;

	//get computed values
	double *computedValues	= NULL;
	double *timeValues      = NULL;
	int    nbValues;
	if (!getComputedValuesFromSerieAndInterval(startDate, stopDate, pSeries, pParamIndex,
				&computedValues, &timeValues, nbValues))
	{
		LOG4CXX_DEBUG(gLogger, "TimePlot::drawSeries - Cannot get computed values for serie");
		return;
	}

	double *coloredComputedValues = NULL;
	double *coloredTimeValues     = NULL;
	//get colored value if needed
	if (!pSeries.getColorParamId().empty() && (_panel->getColorAxis() != nullptr))
	{
		int nbColoredValues;
		if (!getColoredComputedValuesFromSerieAndInterval(startDate, stopDate, pSeries,
				&coloredComputedValues, &coloredTimeValues, nbColoredValues))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawSeries - Cannot get computed values for colored parameter");
			return;
		}
	}

	PlWindow lPlWindow = PlWindow(getTimeAxis()->getRange().getMin(), getTimeAxis()->getRange().getMax(),
			_panel->getAxis(yAxisId)->getRange().getMin(), _panel->getAxis(yAxisId)->getRange().getMax());

	_pls->wind(std::get<0>(lPlWindow), std::get<1>(lPlWindow),
				std::get<2>(lPlWindow), std::get<3>(lPlWindow));

	//draw serie
	Color lineColor   = getSerieLineColor(pSeries, moreThanOneSerieForAxis);
	Color symbolColor = getSerieSymbolColor(pSeries, lineColor);

	drawSymbols(
		pSeries.getSymbolProperties().getType(),
		pSeries.getSymbolProperties().getSize(), 1.,
		symbolColor,
		nbValues, timeValues, computedValues, coloredComputedValues);

	drawLines(
		pSeries.getLineProperties().getType(),
		pSeries.getLineProperties().getStyle(),
		pSeries.getLineProperties().getWidth(),
		lineColor,
		nbValues, timeValues, computedValues, coloredComputedValues);

	//add serie to param legend
	addSerieToParamsLegend(pSeries,pParamIndex,param._originalParamId, lineColor,symbolColor,startDate,stopDate,intervalIndex);

	//draw interval
	drawSerieInterval(pSeries,timeValues,computedValues,timeValues,nbValues,intervalIndex);

	delete[] computedValues;
	if (coloredComputedValues != NULL)
		delete[] coloredComputedValues;

	// Draw min/max error bars if required
	ErrorBarProperties &errorBarProp = pSeries.getErrorBarProperties();
	if (errorBarProp.getErrorMinMax() != nullptr)
	{
		//get computed min/max error data
		double *minComputedValues = NULL;
		double *minTimeValues     = NULL;
		int nbMinValues;

		double *maxComputedValues = NULL;
		double *maxTimeValues     = NULL;
		int nbMaxValues;

		if (!getErrorComputedValuesFromSerieAndInterval(startDate, stopDate, pSeries,
					&minComputedValues, &minTimeValues, nbMinValues,
					&maxComputedValues, &maxTimeValues, nbMaxValues))
		{
			LOG4CXX_DEBUG(gLogger, "TimePlot::drawSeries - Cannot get min/max error values for serie");
			return;
		}

		LineProperties &lineProps = pSeries.getErrorBarProperties().getLineProperties();
		drawYErrors(	lineProps.getType(),
						lineProps.getStyle(),
						lineProps.getWidth(),
						lineProps.getColor(),
						nbMinValues, minTimeValues,
						minComputedValues, maxComputedValues);

		// Free values
		delete [] minComputedValues;
		delete [] maxComputedValues;
	}
}

void TimePlot::drawSpectro(double startDate, double stopDate, std::string pParamId, SpectroProperties& pSpectro)
{
	LOG4CXX_DEBUG(gLogger, "TimePlot::drawSpectro Drawing spectro for parameter "<<pParamId);
	// This will configure window, draw axes (if needed) and legend of axes.
	PanelPlotOutput::drawSpectro(startDate, stopDate, pParamId, pSpectro);

	//get parameter data and info
	ParameterSPtr p = _parameterManager.getParameter(pParamId);

	ParameterData& data = (*_pParameterValues)[pSpectro.getParamId()];

	boost::shared_ptr<AMDA::Info::ParamTable> tableSPtr;
	AMDA::Info::ParamInfoSPtr paramInfo = AMDA::Info::ParamMgr::getInstance()->getParamInfoFromId(p->getInfoId());
	if (paramInfo != nullptr)
		tableSPtr = paramInfo->getTable(pSpectro.getRelatedDim());

	//get axis
	boost::shared_ptr<Axis> lXAxis = _panel->getAxis(pSpectro.getXAxisId());
	boost::shared_ptr<Axis> lYAxis = _panel->getAxis(pSpectro.getYAxisId());
	boost::shared_ptr<ColorAxis> lZAxis = _panel->getColorAxis();

	//Check dimensions
	if (pSpectro.getRelatedDim() == 0)
	{
		if (data.getDim1Size() + 1 <= 0)
		{
			LOG4CXX_INFO(gLogger, "TimePlot::drawSpectro - No data to plot");
			return;
		}
	}
	else
	{
		if (data.getDim2Size() + 1 <= 0)
		{
			LOG4CXX_INFO(gLogger, "TimePlot::drawSpectro - No data to plot");
			return;
		}
	}

	LOG4CXX_DEBUG(gLogger, "TimePlot::drawSpectro - Build data grid");
	MatrixGrid matrixGrid;

	if ((tableSPtr == nullptr) || !tableSPtr->isVariable(&_parameterManager))
	{
		int startIndex;
		int nbValues;
		data.getIntervalBounds(startDate, stopDate, startIndex, nbValues);
		for (auto index : pSpectro.getIndexes())
		{
			GridPart part;
			if (tableSPtr == nullptr)
			{
				if (pSpectro.getRelatedDim() == 0)
					part.y[0] = index.getDim1Index();
				else
					part.y[0] = index.getDim2Index();
				part.y[1] = part.y[0]+1;
			}
			else
			{
				AMDA::Info::t_TableBound crtBound;
				if (pSpectro.getRelatedDim() == 0)
					crtBound = tableSPtr->getBound(&_parameterManager, index.getDim1Index());
				else
					crtBound = tableSPtr->getBound(&_parameterManager, index.getDim2Index());
				if (std::isnan(crtBound.min) || std::isnan(crtBound.max))
					continue;
				part.y[0] = crtBound.min;
				part.y[1] = crtBound.max;
				if (lYAxis->_scale == Axis::Scale::LOGARITHMIC)
				{
					if ((crtBound.min <= 0) || (crtBound.max <= 0))
						continue;
					part.y[0] = log10(part.y[0]);
					part.y[1] = log10(part.y[1]);
				}
			}

			for (int i = 0; i < nbValues - 1; ++i)
			{
				part.x[0] = data.getTimes()[startIndex+i];
				part.x[1] = data.getTimes()[startIndex+i+1];

				part.value = data.getValues(index, startIndex)[i];
				matrixGrid.push_back(part);
			}
		}
	}
	else
	{
		//Variable table
		AMDA::Info::t_TableBound crtBound;
		//for (auto index : pSpectro.getIndexes())
		//{
		int startIndex;
		int nbValues;
		data.getIntervalBounds(startDate, stopDate, startIndex, nbValues);
		for (int i = 0; i < nbValues - 1; ++i)
		{
			GridPart part;
			part.x[0] = data.getTimes()[startIndex+i];
			part.x[1] = data.getTimes()[startIndex+i+1];

			std::map<std::string, std::vector<double>> paramsTableData;
			for (std::map<std::string, std::string>::iterator it = pSpectro.getTableParams().begin(); it != pSpectro.getTableParams().end(); ++it)
			{
				ParameterData& tableData = (*_pParameterValues)[it->second];
				std::vector<double> paramTableValues;
				for (int j = 0; j < tableData.getDim1Size(); ++j)
				{
					double* values = tableData.getValues(AMDA::Common::ParameterIndexComponent(j,-1), i);
					paramTableValues.push_back((*values));
				}
				paramsTableData[it->first] = paramTableValues;
			}

			for (auto index : pSpectro.getIndexes())
			{
				part.value = data.getValues(index,startIndex)[i];

				if (pSpectro.getRelatedDim() == 0)
					crtBound = tableSPtr->getBound(&_parameterManager, index.getDim1Index(), &paramsTableData);
				else
					crtBound = tableSPtr->getBound(&_parameterManager, index.getDim2Index(), &paramsTableData);

				part.y[0] = crtBound.min;
				part.y[1] = crtBound.max;

				if (!std::isnan(crtBound.min) && !std::isnan(crtBound.max))
				{
					if (lYAxis->_scale == Axis::Scale::LOGARITHMIC)
					{
						if ((crtBound.min > 0) && (crtBound.max > 0))
						{
							part.y[0] = log10(part.y[0]);
							part.y[1] = log10(part.y[1]);
							matrixGrid.push_back(part);
						}
					}
					else
						matrixGrid.push_back(part);
				}
			}
		}
	}

	//get specific colors for min / max values
	Color minValColor = lZAxis->getMinValColor();
	Color maxValColor = lZAxis->getMaxValColor();

	//draw spectro
	LOG4CXX_DEBUG(gLogger, "TimePlot::drawSpectro - Draw data grid");
	drawMatrix(matrixGrid, pSpectro.getMin(), pSpectro.getMax(),
			minValColor, maxValColor, lZAxis->_color._colorMapIndex, FALSE, pSpectro.getUseLog0AsMin());
}

/**
 * @brief Draw further information (for instance start date).
 */
void TimePlot::drawStartDate(TimeAxis* pXAxis, double startTime, double stopTime) {
	LOG4CXX_DEBUG(gLogger, "Drawing start date.");

	if (pXAxis->_showTickMark == false || !pXAxis->_drawn || !pXAxis->_visible)
		return;

	// use panel font to draw start date.

	// If font of legend is not defined, use panel font.
	Font font(_panel->getFont());

	// PlPlotUtil::setPlFont(font);
	//CharSize charsize = PlPlotUtil::getCharacterSizeInPlPage(_panel->_page);
	// panel bounds.
	Bounds lPanelBounds(_panel->getBoundsInPlPage());

	// plotting area bounds (i.e. current viewport dimensions)
	PLFLT lXMin, lXMax, lYMin, lYMax;
	_pls->gvpd(lXMin, lXMax, lYMin, lYMax);

	// position of reference point of string along the bottom edge
	// expressed as a fraction of the length of the bottom edge
	// set it at the very beginning of edge and use justification to handle
	// reverse axis.
	float lPosition = 0.0;
	// display it one line above the main panel bottom border :
	float disp = -1;

	long int lTime = static_cast<long int>(startTime);
	tm * lTimeTm = gmtime(&lTime);
	char lTimeChr[80];

	// Format date.
	strftime(lTimeChr, 80,
			getPlStartTimeFormat(pXAxis->_timeFormat,
					startTime,
					stopTime).c_str(), lTimeTm);

	PLFLT mxmin, mxmax, mymin, mymax;
	plgspa( &mxmin, &mxmax, &mymin, &mymax );
	float x_subpage_per_mm = 1. / ( mxmax - mxmin );

	LOG4CXX_DEBUG(gLogger, "Start date to draw : " << lTimeChr);

	// Set font
	PlPlotUtil::setPlFont(font);

	PLFLT dateWidthInMm;
	dateWidthInMm = plstrl(lTimeChr);

	// set viewport for start date :
	_pls->vpor(lXMin,lXMax,lPanelBounds._y, lPanelBounds._y+lPanelBounds._height);
	        
	// Draw start date.
	if (pXAxis->_reverse) {
		lPosition = 1.;
		if (dateWidthInMm*x_subpage_per_mm > lPanelBounds._x + lPanelBounds._width - lXMax)
			lPosition = 1. - (dateWidthInMm*x_subpage_per_mm - (lPanelBounds._x + lPanelBounds._width - lXMax)) / (lXMax - lXMin);
		_pls->mtex("b", disp, lPosition , 0., lTimeChr);
	} else {
		lPosition = 0.;
		if (dateWidthInMm*x_subpage_per_mm > lXMin - lPanelBounds._x)
			lPosition = (dateWidthInMm*x_subpage_per_mm - lXMin + lPanelBounds._x) / (lXMax - lXMin);
		_pls->mtex("b", disp, lPosition, 1., lTimeChr);
	}

	// restore viewport :
	_pls->vpor(lXMin,lXMax,lYMin, lYMax);
}

const std::string TimePlot::getXAxisId() const {
	// time plot can manage only one x axis.
	// search for its id
	for (auto param : _parameterAxesList)
	{
		//search time axis in color serie if exist
		if (!param.getYSeriePropertiesList().empty())
			return param.getYSeriePropertiesList().begin()->getXAxisId();
		//search time axis in spectro if exist
		if (param.getSpectroProperties() != nullptr)
			return param.getSpectroProperties()->getXAxisId();
	}

	return DefaultPlotConfiguration::TIME_DEFAULT_ID;
}


} /* namespace plot */