/*
 
* Copyright (c) 2016 Metron, Inc.
 
* All rights reserved.
 
*
 
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notice, this list of conditions and the following disclaimer.
 
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* Redistributions in binary form must reproduce the above copyright
 
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notice, this list of conditions and the following disclaimer in the
 
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documentation and/or other materials provided with the distribution.
 
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* Neither the name of Metron, Inc. nor the
 
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names of its contributors may be used to endorse or promote products
 
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derived from this software without specific prior written permission.
 
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 
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package com.metsci.glimpse.charts.bathy;

import java.util.Arrays;

import com.metsci.glimpse.util.geo.projection.GeoProjection;

/**
 
* @author ulman
 
*/
public class ContourData
{
    
private RecordVertices contours;

    
public ContourData( BathymetryData bathymetryData, GeoProjection tp, double[] levels )
    
{
        
// sort the levels array
        
Arrays.sort( levels );

        
contours = new RecordVertices( tp );

        
try
        
{
            
Conrec contourCalculator = new Conrec( contours );
            
double[][] bathyData = bathymetryData.getData( );
            
int sizeX = bathyData.length;
            
int sizeY = bathyData[0].length;
            
contourCalculator.contour( bathyData, 0, sizeX - 1, 0, sizeY - 1, getLongitudes( bathymetryData ), getLatitudes( bathymetryData ), levels.length, levels );
        
}
        
catch ( Exception e1 )
        
{
            
e1.printStackTrace( );
        
}
    
}

    
public float[] getCoordsX( )
    
{
        
return contours.getCoordsX( );
    
}

    
public float[] getCoordsY( )
    
{
        
return contours.getCoordsY( );
    
}

    
protected double[] getLatitudes( BathymetryData bathymetryDataSet )
    
{
        
double startLat = bathymetryDataSet.getStartLat( );
        
double heightStep = bathymetryDataSet.getHeightStep( );
        
int imageHeight = bathymetryDataSet.getImageHeight( );

        
double[] latitudes = new double[imageHeight];

        
for ( int i = 0; i < imageHeight; i++ )
        
{
            
latitudes[i] = startLat + ( i + 0.5 ) * heightStep;
        
}

        
return latitudes;
    
}

    
protected double[] getLongitudes( BathymetryData bathymetryDataSet )
    
{
        
double startLon = bathymetryDataSet.getStartLon( );
        
double widthStep = bathymetryDataSet.getWidthStep( );
        
int imageWidth = bathymetryDataSet.getImageWidth( );

        
double[] longitudes = new double[imageWidth];

        
for ( int i = 0; i < imageWidth; i++ )
        
{
            
longitudes[i] = startLon + ( i + 0.5 ) * widthStep;
        
}

        
return longitudes;
    
}
}