Application: gvSIG desktop » gvSIG data provider for DWG

/* jdwglib. Java Library for reading Dwg files.

 *

 * Author: Jose Morell Rama (jose.morell@gmail.com).

 * Port from the Pythoncad Dwg library by Art Haas.

 *

 * Copyright (C) 2005 Jose Morell, IVER TI S.A. and Generalitat Valenciana

 *

 * 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:

 *

 * Jose Morell (jose.morell@gmail.com)

 *

 * or

 *

 * IVER TI S.A.

 *  C/Salamanca, 50

 *  46005 Valencia

 *  Spain

 *  +34 963163400

 *  dac@iver.es

 */

package org.gvsig.dwg.lib.objects;

import java.awt.geom.Point2D;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import org.gvsig.dwg.lib.DwgFile;

import org.gvsig.dwg.lib.DwgObject;

import org.gvsig.dwg.lib.IDwg2FMap;

import org.gvsig.dwg.lib.IDwg3DTestable;

import org.gvsig.dwg.lib.IDwgBlockMember;

import org.gvsig.dwg.lib.IDwgExtrusionable;

import org.gvsig.dwg.lib.IDwgPolyline;

import org.gvsig.dwg.lib.IDwgVertex;

import org.gvsig.dwg.lib.util.AcadExtrusionCalculator;

import org.gvsig.dwg.lib.util.FMapUtil;

import org.gvsig.dwg.lib.util.GisModelCurveCalculator;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

/**

 * The DwgLwPolyline class represents a DWG LwPolyline

 *

 * @author jmorell

 */

public class DwgLwPolyline extends DwgObject

        implements IDwgPolyline, IDwgExtrusionable,

        IDwg3DTestable, IDwg2FMap, IDwgBlockMember{

        private int flag;

        private double constWidth;

        private double elevation;

        private double thickness;

        private double[] normal;

        private List vertices;

        /*

         *The bulge is the tangent of 1/4 of the included angle for the arc

         *between the selected vertex and the next vertex in the polyline's vertex list.

         *A negative bulge value indicates that the arc goes clockwise from

         *the selected vertex to the next vertex.

         *A bulge of 0 indicates a straight segment,

         *and a bulge of 1 is a semicircle.

         *

         *http://www.faqs.org/faqs/CAD/autolisp-faq/part2/section-6.html

         */

        private double[] bulges;

        private double[][] widths;

        public DwgLwPolyline(int index) {

                super(index);

                vertices = new ArrayList();

        }

        /**

         * @return Returns the bulges.

         */

        public double[] getBulges() {

                return bulges;

        }

        /**

         * @param bulges The bulges to set.

         */

        public void setBulges(double[] bulges) {

                this.bulges = bulges;

        }

        /**

         * @return Returns the flag.

         */

        public int getFlag() {

                return flag;

        }

        /**

         * @param flag The flag to set.

         */

        public void setFlag(int flag) {

                this.flag = flag;

        }

        /**

         * @return Returns the vertices.

         */

        public List getVertices() {

                return vertices;

        }

        /**

         * @param vertices The vertices to set.

         */

        public void setVertices(List vertices) {

                this.vertices = vertices;

        }

    /**

     * @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 normal.

     */

    public double[] getNormal() {

        return normal;

    }

        /* (non-Javadoc)

         * @see java.lang.Object#clone()

         */

//        public Object clone() {

//                DwgLwPolyline dwgLwPolyline = new DwgLwPolyline(index);

//                dwgLwPolyline.setType(type);

//                dwgLwPolyline.setHandle(handle);

//                dwgLwPolyline.setVersion(version);

//                dwgLwPolyline.setMode(mode);

//                dwgLwPolyline.setLayerHandle(layerHandle);

//                dwgLwPolyline.setColor(color);

//                dwgLwPolyline.setNumReactors(numReactors);

//                dwgLwPolyline.setNoLinks(noLinks);

//                dwgLwPolyline.setLinetypeFlags(linetypeFlags);

//                dwgLwPolyline.setPlotstyleFlags(plotstyleFlags);

//                dwgLwPolyline.setSizeInBits(sizeInBits);

//                dwgLwPolyline.setExtendedData(extendedData);

//                dwgLwPolyline.setGraphicData(graphicData);

//                //dwgLwPolyline.setInsideBlock(insideBlock);

//                dwgLwPolyline.setFlag(flag);

//                dwgLwPolyline.setElevation(elevation);

//                dwgLwPolyline.setConstWidth(constWidth);

//                dwgLwPolyline.setThickness(thickness);

//                dwgLwPolyline.setNormal(normal);

//                dwgLwPolyline.setVertices(vertices);

//                dwgLwPolyline.setBulges(bulges);

//                dwgLwPolyline.setWidths(widths);

//                return dwgLwPolyline;

//        }

        /**

         * @return Returns the constWidth.

         */

        public double getConstWidth() {

                return constWidth;

        }

        /**

         * @param constWidth The constWidth to set.

         */

        public void setConstWidth(double constWidth) {

                this.constWidth = constWidth;

        }

        /**

         * @return Returns the thickness.

         */

        public double getThickness() {

                return thickness;

        }

        /**

         * @param thickness The thickness to set.

         */

        public void setThickness(double thickness) {

                this.thickness = thickness;

        }

        /**

         * @return Returns the widths.

         */

        public double[][] getWidths() {

                return widths;

        }

        /**

         * @param widths The widths to set.

         */

        public void setWidths(double[][] widths) {

                this.widths = widths;

        }

        /**

         * @param normal The normal to set.

         */

        public void setNormal(double[] normal) {

                this.normal = normal;

        }

        /* (non-Javadoc)

         * @see com.iver.cit.jdwglib.dwg.IDwgPolyline#calculateGisModel(java.util.List)

         */

        public void calculateGisModel(DwgFile dwgFile) {

                if (getVertices() == null) {

                        return;

                }

                int flags = getFlag();

                List pts = getVertices();

                double[] bulges = getBulges();

                List newPts = new ArrayList();

                double[] newBulges = null;

                if(bulges != null){

                        newBulges = new double[bulges.length];

                        System.arraycopy(bulges, 0, newBulges, 0, bulges.length);

                }else{

                        bulges = new double[pts.size() ];

                        newBulges = new double[bulges.length];

                        //dwg spec says numVertex (numSegments + 1)

                        //TODO Check this

                        for(int i = 0; i < newBulges.length; i++) {

                                bulges[i] = 0d;

                        }

                        newBulges = new double[bulges.length];

                        System.arraycopy(bulges, 0, newBulges, 0, bulges.length);

                }

                // TODO: Aqu� pueden existir casos no contemplados ...

//        System.out.println("flags = " + flags);

        if (flags==512 || flags==776 || flags==768) {//closed

                        newBulges = new double[bulges.length+1];

                        for (int j=0;j<pts.size();j++) {

                                newPts.add(pts.get(j));

                        }

                        newPts.add(pts.get(0));

                        newBulges[pts.size()] = 0;

                } else {

                        for (int j=0;j<pts.size();j++) {

                                newPts.add(pts.get(j));

                        }

                }

                if (newPts.size() > 0) {

                        setBulges(newBulges);

                        List points = GisModelCurveCalculator.calculateGisModelBulge(newPts, newBulges);

                        setVertices(points);

                }

//                if (pts.size() > 0) {

//                        setBulges(newBulges);

//                        List points = GisModelCurveCalculator.calculateGisModelBulge(newPts, newBulges);

//                        setVertices(points);

//                }

//                else {

////                        System.out.println("Encontrada polil�nea sin puntos ...");

//                        // TODO: No se debe mandar nunca una polil�nea sin puntos, si esto

//                        // ocurre es porque existe un error que hay que corregir ...

//                }

        }

        /* (non-Javadoc)

         * @see com.iver.cit.jdwglib.dwg.IDwgExtrusionable#applyExtrussion()

         */

        public void applyExtrussion() {

                if (getVertices() == null) {

                        return;

                }

                 List vertices = getVertices();

         double[] lwPolylineExt = getNormal();

         // Normals and Extrusions aren`t the same

         if (lwPolylineExt[0]==0 && lwPolylineExt[1]==0 && lwPolylineExt[2]==0) {

                        lwPolylineExt[2] = 1.0;

                }

         double elev = getElevation();

         List lwPolylinePoints3D = new ArrayList();

         for (int j=0;j<vertices.size();j++) {

                 double[] point = new double[3];

             point[0] = ((double[])vertices.get(j))[0];

             point[1] = ((double[])vertices.get(j))[1];

             point[2] = elev;

             lwPolylinePoints3D.add(AcadExtrusionCalculator.

                             extrude2(point, lwPolylineExt));

         }

         setElevation(elev);

         List newVertices = new ArrayList();

         for (int j=0;j<vertices.size();j++) {

                 double[] point = (double[]) lwPolylinePoints3D.get(j);

             newVertices.add(new double[]{point[0], point[1]});

         }

         setVertices(newVertices);

        }

        /* (non-Javadoc)

         * @see com.iver.cit.jdwglib.dwg.IDwg3DTestable#has3DData()

         */

        public boolean has3DData() {

                return getElevation() != 0.0;

        }

        public double getZ() {

                return getElevation();

        }

        public Geometry toFMapGeometry(boolean is3DFile) throws CreateGeometryException {

                return FMapUtil.ptsToMultiLine(getVertices(),

                                getGeometrySubType(is3DFile));

        }

        public String toFMapString(boolean is3DFile) {

                if(is3DFile) {

                        return "FPolyline3D";

                } else {

                        return "FPolyline2D";

                }

        }

        public String toString(){

                return "LwPolyline";

        }

        public void transform2Block(double[] bPoint, Point2D insPoint,

                        double[] scale, double rot,

                        List dwgObjectsWithoutBlocks,

                        Map handleObjWithoutBlocks, DwgFile callBack) {

                DwgLwPolyline transformedEntity = null;

                List vertices = this.getVertices();

                Object vertice;

                double[] point;

                if (vertices!=null) {

                    List transformedVertices = new ArrayList();

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

                                vertice = vertices.get(i);

                                if (vertice instanceof Point2D.Double){

                                        point = new double[] {((Point2D.Double)vertices.get(i)).x, ((Point2D.Double)vertices.get(i)).y};

                                } else {

                                        point = (double[]) vertices.get(i);

                                }

                                double[] pointAux = new double[]{point[0] - bPoint[0],

                                                        point[1] - bPoint[1]};

                                double laX = insPoint.getX() + ((pointAux[0]*scale[0])*Math.cos(rot) + (pointAux[1]*scale[1])*(-1)*Math.sin(rot));

                                double laY = insPoint.getY() + ((pointAux[0]*scale[0])*Math.sin(rot) + (pointAux[1]*scale[1])*Math.cos(rot));

                                transformedVertices.add(new double[]{laX, laY});

                        }

                        transformedEntity = (DwgLwPolyline)this.clone();

                        transformedEntity.setVertices(transformedVertices);

                        transformedEntity.setElevation((this.getElevation() * scale[2]));

                        transformedEntity.setHandle(this.getHandle());

                        dwgObjectsWithoutBlocks.add(transformedEntity);

                        handleObjWithoutBlocks.put(new Integer(transformedEntity.getHandle().getOffset()), transformedEntity);

//                        dwgObjectsWithoutBlocks.add(this);

                }//if

        }

        public Object clone(){

                DwgLwPolyline dwgLwPolyline = new DwgLwPolyline(index);

                this.fill(dwgLwPolyline);

                return dwgLwPolyline;

        }

        protected void fill(DwgObject obj){

                super.fill(obj);

                DwgLwPolyline myObj = (DwgLwPolyline)obj;

                myObj.setBulges(bulges);

                myObj.setConstWidth(constWidth);

                myObj.setElevation(elevation);

                myObj.setFlag(flag);

                myObj.setNormal(normal);

                myObj.setThickness(thickness);

                myObj.setVertices(vertices);

                myObj.setWidths(widths);

        }

        public void addVertex(IDwgVertex vertex) {

                vertices.add(vertex.getPoint());

        }

        public int getGeometryType() {

                return Geometry.TYPES.MULTICURVE;

        }

}