package org.apache.tuscany.sca.impl.artifacts;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

public class Reference extends Artifact {
	
//private static final int COMMON_LENGTH = 20 ;	
	
//	public static Element addReferenceElement(Document document, String svgNs, int midX, int midY) {
//		
//		// Create the rectangle.
//		Element polygon = document.createElementNS(svgNs, "polygon");
//		polygon.setAttributeNS(null, "points", 
//				""+ (midX-COMMON_LENGTH) +","+midY+" " +
//				""+ (midX+(COMMON_LENGTH/2)) +","+midY+" " +
//				""+ (midX+COMMON_LENGTH) +","+(midY-COMMON_LENGTH)+" " +
//				""+ (midX+(COMMON_LENGTH/2)) +","+(midY-COMMON_LENGTH*2)+" " +
//				""+ (midX-COMMON_LENGTH) +","+(midY-COMMON_LENGTH*2)+" " +
//				""+ (midX-(COMMON_LENGTH/2)) +","+(midY-COMMON_LENGTH)+" "
//			);
//		polygon.setAttributeNS(null, "fill", "#BF3EFF");
//		polygon.setAttributeNS(null, "stroke", "#68228B");
//		//rectangle.setAttributeNS(null, "alignment-baseline", "central");
//		
//		return polygon;
//	}
//	

	
	public Element addElement(Document document, String svgNs, int x, int y,
			int height, int width) {
		return this.addElement(document, svgNs, x, y, height);
	}
	
	/**
	 * In a Reference the (x,y) coordinates refers to the outer edge of the polygon
	 * 		______
	 * 		\     \ 
	 * 		 \     \ ___ outer edge
	 * 		 /     /
	 * 		/____ /
	 * 
	 * @param document
	 * @param svgNs
	 * @param x
	 * @param y
	 * @param height
	 * @return
	 */
	public Element addElement(Document document, String svgNs, int x, int y,
			int height) {
		
		this.setHeight(height);
		this.setWidth(height);
		this.setxCoordinate(x);
		this.setyCoordinate(y);
		
		int length = height/2;
		
		Element polygon = document.createElementNS(svgNs, "polygon");
		polygon.setAttributeNS(null, "points", 
				""+ x +","+y+" " +
				""+ (x-length) +","+(y+length)+" " +
				""+ (x-length*3) +","+(y+length)+" " +
				""+ (x-length*2) +","+(y)+" " +
				""+ (x-length*3) +","+(y-length)+" " +
				""+ (x-length) +","+(y-length)+" "
			);
		
		polygon.setAttributeNS(null, "fill", "#BF3EFF");
		polygon.setAttributeNS(null, "stroke", "#68228B");
		
		return polygon;
	}

}