Application: gvSIG desktop

/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 *

 * Copyright (C) 2004-5.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 * cresques@gmail.com

 */

package org.cresques.px.dxf;

import java.awt.Color;

import java.awt.Graphics2D;

import java.awt.geom.GeneralPath;

import java.awt.geom.Point2D;

import java.util.Iterator;

import java.util.Vector;

import org.gvsig.projection.cts.ICoordTrans;

import org.gvsig.projection.cts.IProjection;

import org.cresques.geo.Point2DZ;

import org.gvsig.projection.geo.ViewPortData;

import org.cresques.io.DxfGroup;

import org.gvsig.projection.px.Extent;

/**

 * Entidad POLYLINE de un fichero DXF.

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

 * @author jmorell

 */

public class DxfPolyline extends DxfEntity {

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

    Vector pts = null;

    Vector faces = null;

    GeneralPath gp = null;

    int flags = 0;

    boolean closed = false;

    boolean hasFaces = false;

    private Vector bulges;

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

    private double elevation;

    private String subclassMarker;

    /**

     * Constructor de DxfPolyline.

     * @param proj, proyecci?n cartogr?fica en la que se encuentra el DxfPolyline.

     * @param layer, capa del DXF en la que se encuentra el DxfPolyline.

     */

    public DxfPolyline(IProjection proj, DxfLayer layer) {

        super(proj, layer);

        extent = new Extent();

        pts = new Vector();

        bulges = new Vector();

    }

    /**

     * A?ade un punto a la polil?nea.

     * @param pt

     */

    public void add(Point2D pt) {

        pts.add(pt);

        extent.add(pt);

    }

    /**

     * A?ade un bulge o par?metro de curvatura a la lista. Estos par?metros se

     * corresponden con los v?rtices.

     * @param bulge, par?metro de curvatura.

     */

    /**

     * 050301, jmorell: Soluci?n para implementar la lectura de polil?neas

     * con arcos.

     */

    public void addBulge(Double bulge) {

        bulges.add(bulge);

    }

    /**

     * A?ade una face a la polil?nea.

     * @param face

     */

    public void addFace(int[] face) {

        hasFaces = true;

        if (faces == null) {

            faces = new Vector();

        }

        faces.add(face);

    }

    /**

     * Devuelve el color de la DxfPolyline.

     * @return Color

     */

    public Color c() {

        return color;

    }

    /**

     * Establece el color de la DxfPolyline.

     * @param color

     * @return Color

     */

    public Color c(Color color) {

        this.color = color;

        return color;

    }

    /**

     * Permite reproyectar una DxfPolyline dado un conjunto de coordenadas de transformaci?n.

     * @param rp, coordenadas de transformaci?n.

     */

    public void reProject(ICoordTrans 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);

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

            pts.add(ptDest);

            extent.add(ptDest);

        }

        setProjection(rp.getPDest());

    }

    /**

     * Permite dibujar una DxfPolyline.

     */

    public void draw(Graphics2D g, ViewPortData vp) {

        //AffineTransform msave=g.getTransform();

        //g.setTransform(vp.mat);

        Color color = null;

        // pinto el poligono si es preciso

        if (dxfColor == AcadColor.BYLAYER) {

            color = layer.getColor();

        } else {

            color = AcadColor.getColor(dxfColor);

        }

        System.out.println("PLINE color=" + color);

        newGP(vp);

        if (closed) {

            g.setColor(new Color(color.getRed(), color.getBlue(),

                                 color.getGreen(), 0x20));

            g.fill(gp);

        }

        g.setColor(color);

        g.draw(gp);

        //g.setTransform(msave);

    }

    /**

     * Permite generar un GeneralPath partiendo del Vector de puntos que conforma la

     * DxfPolyline.

     * @param vp

     */

    private void newGP(ViewPortData vp) {

        //if (gp != null) return;

        gp = new GeneralPath();

        Point2D pt0 = null;

        Point2D pt = null;

        Point2D pt1 = null;

        Point2D.Double ptTmp = new Point2D.Double(0.0, 0.0);

        if (!hasFaces) {

            Iterator iter = pts.iterator();

            while (iter.hasNext()) {

                pt1 = (Point2D) iter.next();

                vp.mat.transform(pt1, ptTmp);

                if (pt0 == null) {

                    pt0 = ptTmp;

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

                } else {

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

                }

            }

            if (closed) {

                gp.closePath();

            }

        } else {

            System.out.println("POLYLINE: caras=" + faces.size() + ", puntos=" +

                               pts.size());

            int[] face;

            int i0;

            int i1;

            Iterator iter = faces.iterator();

            while (iter.hasNext()) {

                face = (int[]) iter.next();

                i0 = face[3];

                for (int i = 0; i < 4; i++) {

                    i1 = face[i];

                    if (i0 > 0) {

                        pt0 = (Point2D) pts.get(i0 - 1);

                        vp.mat.transform(pt0, ptTmp);

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

                        pt1 = (Point2D) pts.get(Math.abs(i1) - 1);

                        vp.mat.transform(pt1, ptTmp);

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

                    }

                    i0 = i1;

                }

            }

        }

    }

    /**

     * Permite la escritura de entidades DxfPolyline en un fichero DXF2000.

     * @return String, la cadena que se escribir? en el fichero con la informaci?n

     * del DxfPolyline.

     */

    public String toDxfString() {

        StringBuffer sb = null;

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

        sb.append(DxfGroup.toString(5, getHandle()));

        sb.append(DxfGroup.toString(100, "AcDbEntity"));

        sb.append(DxfGroup.toString(100, getSubclassMarker()));

        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));

        Point2DZ pt = null;

        Iterator iter = pts.iterator();

        System.out.println("pts.size() = " + pts.size());

        int i=1;

        while (iter.hasNext()) {

            pt = (Point2DZ) iter.next();

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

            sb.append(DxfGroup.toString(5, getHandle()+i));

            sb.append(DxfGroup.toString(100, "AcDbEntity"));

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

            sb.append(DxfGroup.toString(100, "AcDbVertex"));

            sb.append(DxfGroup.toString(100, "AcDb3dPolylineVertex"));

            sb.append(DxfGroup.toString(70, 32));

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

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

            sb.append(DxfGroup.toString(30, pt.getZ(), 6));

            i++;

        }

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

        sb.append(DxfGroup.toString(5, getHandle()+i));

        sb.append(DxfGroup.toString(100, "AcDbEntity"));

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

        return sb.toString();

    }

    /**

     * Devuelve el GeneralPath.

     * @return GeneralPath

     */

    public GeneralPath getGeneralPath(ViewPortData vp) {

        newGP(vp);

        return (GeneralPath) gp.clone();

    }

    /**

     * Devuelve la variable flags de una polil?nea.

     * @return int

     */

    public int getFlags() {

        return flags;

    }

    /**

     * Invoca el m?todo de creaci?n de arcos para polil?neas con par?metros de

     * curvatura.

     * @param coord1, punto inicial del arco.

     * @param coord2, punto final del arco.

     * @param bulge, par?metro de curvatura.

     * @return Vector con los puntos del arco.

     */

    public static Vector createArc(Point2D coord1, Point2D coord2, double bulge) {

        return new DxfCalArcs(coord1, coord2, bulge).getPoints(1);

    }

    /**

     * @return Returns the pts.

     */

    public Vector getPts() {

        return pts;

    }

    /**

     * @param pts The pts to set.

     */

    public void setPts(Vector pts) {

        this.pts = pts;

    }

    /**

     * @return Returns the bulges.

     */

    public Vector getBulges() {

        return bulges;

    }

    /**

     * @param bulges The bulges to set.

     */

    public void setBulges(Vector bulges) {

        this.bulges = bulges;

    }

    /**

     * @return Returns the elevation.

     */

    public double getElevation() {

        return elevation;

    }

    /**

     * @param elevation The elevation to set.

     */

    public void setElevation(double elevation) {

        this.elevation = elevation;

    }

    /**

     * @return Returns the subclassMarker.

     */

    public String getSubclassMarker() {

        return subclassMarker;

    }

    /**

     * @param subclassMarker The subclassMarker to set.

     */

    public void setSubclassMarker(String subclassMarker) {

        this.subclassMarker = subclassMarker;

    }

}