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package render;

import ieg.prefuse.data.ParentChildNode;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.util.Hashtable;
import java.util.Iterator;

import prefuse.data.Node;
import prefuse.data.Tuple;
import prefuse.util.ColorLib;
import prefuse.util.GraphicsLib;
import prefuse.visual.EdgeItem;
import prefuse.visual.NodeItem;
import prefuse.visual.VisualItem;

/**
 * TODO convert from VisualItem.X2 to VisualItem.SIZE
 * @author Lammarsch
 */
public class ArcRenderer implements prefuse.render.Renderer {
	/**
	 * Draws arcs like for ArcDiagrams
	 * @see prefuse.render.Renderer#render(java.awt.Graphics2D, prefuse.visual.VisualItem)
	 */
	
    private Hashtable m_paths = new Hashtable();
    
    private static int NUMOUTERPOINTS = 3;
    private static int NUMINNERPOINTS = 3;
    private static double KAPPA = 0.5522847498;
	
	public void render(Graphics2D g, VisualItem item) {		
		if(item instanceof EdgeItem) {
			NodeItem childNode = ((EdgeItem)item).getSourceItem();
			NodeItem parentNode = ((EdgeItem)item).getTargetItem();
			if (childNode instanceof VisualItem && parentNode instanceof VisualItem) {
				VisualItem child = (VisualItem)childNode;
				VisualItem parent = (VisualItem)parentNode;						
	
				// There is not function for what we want to do - so we draw a polygon with many nodes and calculate those here
				int[] x = new int[128];
				int[] y = new int[128];
	
				double outerRadius = (child.getDouble(VisualItem.X2)-parent.getX())/2.0;		
				double innerRadius = (child.getX()-parent.getDouble(VisualItem.X2))/2.0;
				/*if ( parent.getColumnIndex(ParentChildNode.DEPTH) == -1 ) {
					for(int j=0; j<=95; j++) {
						x[j] = (int)Math.round( parent.getX() + outerRadius * Math.cos( ((double)j) / 95.0 * Math.PI ) + outerRadius );
						y[j] = (int)Math.round( -outerRadius * Math.sin( ((double)j) / 95.0 * Math.PI ) + g.getClipBounds().height - 5 );
					}
					for(int j=0; j<=31; j++) {
						x[96+j] = (int)Math.round( parent.getDouble(VisualItem.X2) - innerRadius * Math.cos( ((double)j) / 31.0 * Math.PI ) + innerRadius );
						y[96+j] = (int)Math.round( -innerRadius * Math.sin( ((double)j) / 31.0 * Math.PI ) + g.getClipBounds().height - 5 );
					}
				} else {*/						
					int ydirect = parent.getInt(ParentChildNode.DEPTH) % 2 == 0 ? -1 : 1;
					/*for(int j=0; j 0) {
					Iterator iN = ((NodeItem)firstParent).outNeighbors();
					firstParent = (VisualItem)iN.next();
				}
				
				/*g.setColor(ColorLib.getColor(ColorLib.red(firstParent.getFillColor()),
						ColorLib.green(firstParent.getFillColor()),
						ColorLib.blue(firstParent.getFillColor()),
						(int)Math.round((1.0-(outerRadius-innerRadius)/outerRadius)*170.0)));*/
				g.setColor(ColorLib.getColor(ColorLib.red(firstParent.getFillColor()),
						ColorLib.green(firstParent.getFillColor()),
						ColorLib.blue(firstParent.getFillColor()),
						127));
				
				if(item.isHighlighted())
				{
					g.setColor(ColorLib.getColor(ColorLib.red(firstParent.getFillColor()),
							ColorLib.green(firstParent.getFillColor()),
							ColorLib.blue(firstParent.getFillColor())));
				}
				
				/*if (firstParent.getInt("class") == 0 )
					g.setColor(ColorLib.getColor(255,0,0,(int)Math.round((1.0-(outerRadius-innerRadius)/outerRadius)*170.0)));
				if (firstParent.getInt("class") == 1 )
					g.setColor(ColorLib.getColor(0,255,0,(int)Math.round((1.0-(outerRadius-innerRadius)/outerRadius)*170.0)));
				if (firstParent.getInt("class") == 2 )
					g.setColor(ColorLib.getColor(0,0,255,(int)Math.round((1.0-(outerRadius-innerRadius)/outerRadius)*170.0)));*/
	
				/*if(parent.getInt("class") == 0 && child.getInt("class") == 0)
					g.setColor(ColorLib.getColor(255, 0, 0, 63));
				if(parent.getInt("class") == 0 && child.getInt("class") == 1)
					g.setColor(ColorLib.getColor(170, 170, 0, 63));
				if(parent.getInt("class") == 0 && child.getInt("class") == 2)
					g.setColor(ColorLib.getColor(170, 0, 170, 63));
				if(parent.getInt("class") == 1 && child.getInt("class") == 0)
					g.setColor(ColorLib.getColor(170, 170, 0, 63));
				if(parent.getInt("class") == 1 && child.getInt("class") == 1)
					g.setColor(ColorLib.getColor(0, 255, 0, 63));
				if(parent.getInt("class") == 1 && child.getInt("class") == 2)
					g.setColor(ColorLib.getColor(0, 170, 170, 63));
				if(parent.getInt("class") == 2 && child.getInt("class") == 0)
					g.setColor(ColorLib.getColor(170, 0, 170, 63));
				if(parent.getInt("class") == 2 && child.getInt("class") == 1)
					g.setColor(ColorLib.getColor(0, 170, 170, 63));
				if(parent.getInt("class") == 2 && child.getInt("class") == 2)
					g.setColor(ColorLib.getColor(0, 0, 255, 63));*/
				
				//g.fillPolygon(x, y, 128);

				GeneralPath path = m_paths.get(item);
				if(path == null) {
					path = new GeneralPath();
					m_paths.put(item, path);
				}
				path.reset();
				/*path.moveTo(x[0], y[0]);
				float[] pts = new float[NUMOUTERPOINTS*2];
				for(int i=0; i