Application: gvSIG desktop

/*

 * Created on 30-abr-2004

 *

 * @author "Luis W. Sevilla" <sevilla_lui@gva.es>

 */

package org.cresques.px.dxf;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.geom.AffineTransform;

import java.awt.geom.GeneralPath;

import java.awt.geom.Point2D;

import java.util.Iterator;

import java.util.Vector;

import org.cresques.geo.Projection;

import org.cresques.geo.ReProjection;

import org.cresques.geo.ViewPort;

import org.cresques.io.DxfGroup;

import org.cresques.px.Extent;

/**

 * Polilynea de autocad

 * 

 * @author "Luis W. Sevilla" <sevilla_lui@gva.es>* @author administrador

 */

public class DxfPolyline extends DxfEntity {

        final static Color baseColor = new Color(69, 106, 121);

        Vector pts = null;

        GeneralPath gp = null;

        int flags = 0;

        boolean closed = false;

        public DxfPolyline(Projection proj, DxfLayer layer) {

                super(proj, layer);

                extent = new Extent();

                pts = new Vector();

        }

        public void add(Point2D pt) {

                pts.add(pt);

                extent.add(pt);

        }

        private Color color = baseColor; //Color(255,214,132,255);

        public Color c() {return color;}

        public Color c(Color color) {this.color = color; return color;}

        public void reProject(ReProjection rp) {

                Vector savePts = pts;

                pts = new Vector();

                extent = new Extent();

                Point2D ptDest = null;

                for (int i=0; i<savePts.size(); i++) {

                        ptDest = rp.getPDest().createPoint(0.0,0.0);

                        rp.convert((Point2D) savePts.get(i), ptDest);

                        pts.add(ptDest);

                        extent.add(ptDest);

                }

                setProjection(rp.getPDest());

        }

        public void draw(Graphics2D g, ViewPort vp) {

                AffineTransform msave=g.getTransform();

                g.setTransform(vp.mat);

                // pinto el poligono si es preciso

                if (dxfColor == AcadColor.BYLAYER)

                        g.setColor(layer.getColor());

                else

                        g.setColor(AcadColor.getColor(dxfColor));

                newGP();

                g.draw(gp);

                g.setTransform(msave);

        }

        private void newGP() {

                if (gp != null) return;

                gp = new GeneralPath();

                Point2D pt0 = null, pt=null, pt1=null;

                Iterator iter = pts.iterator();

                while (iter.hasNext()) {

                        pt1 = (Point2D) iter.next();

                        if (pt0 == null) { 

                                pt0 = pt1;

                                gp.moveTo((float)pt1.getX(), (float)pt1.getY());

                        } else {

                                //g.draw(new Line2D.Double(pt,pt1));

                                gp.lineTo((float)pt1.getX(), (float)pt1.getY());

                        }

                        //pt = pt1;

                }

                if (closed) {

                        //gp.closePath();                        

                }

        }

        /**

         * Convierte a DXF.

         * 

         * @return Entity como String Dxf 

         */

        public String toDxfString() {

                StringBuffer sb = null;

                sb = new StringBuffer( DxfGroup.toString(0, "POLYLINE") );

                sb.append( DxfGroup.toString(8, layer.getName()) );

                sb.append( DxfGroup.toString(62, dxfColor) );

                sb.append( DxfGroup.toString(70, flags) );

                sb.append( DxfGroup.toString(66, 1) );

                Point2D pt = null;

                Iterator iter = pts.iterator();

                while (iter.hasNext()) {

                        pt = (Point2D) iter.next();

                        sb.append( DxfGroup.toString(0, "VERTEX") );

                        sb.append( DxfGroup.toString(8, layer.getName()) );

                        sb.append( DxfGroup.toString(10, pt.getX(), 6) );

                        sb.append( DxfGroup.toString(20, pt.getY(), 6) );

                        sb.append( DxfGroup.toString(30, 0.0, 6) );

                }

                sb.append( DxfGroup.toString(0, "SEQEND") );

                sb.append( DxfGroup.toString(8, layer.getName()) );

                return sb.toString();

        }

        /**

         * @return

         */

        public GeneralPath getGeneralPath() {

                newGP();

                return (GeneralPath) gp.clone();

        }

        public int getFlags() {

                return flags;

        }

}