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/* 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 com.iver.cit.jdwglib.dwg.objects;

import java.awt.geom.Point2D;

import java.util.List;

import java.util.Map;

import com.iver.cit.gvsig.fmap.core.FPolyline2D;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.jdwglib.dwg.DwgFile;

import com.iver.cit.jdwglib.dwg.DwgObject;

import com.iver.cit.jdwglib.dwg.IDwg2FMap;

import com.iver.cit.jdwglib.dwg.IDwg3DTestable;

import com.iver.cit.jdwglib.dwg.IDwgBlockMember;

import com.iver.cit.jdwglib.dwg.IDwgExtrusionable;

import com.iver.cit.jdwglib.dwg.IDwgPolyline;

import com.iver.cit.jdwglib.util.AcadExtrusionCalculator;

import com.iver.cit.jdwglib.util.FMapUtil;

import com.iver.cit.jdwglib.util.GisModelCurveCalculator;

/**

 * The DwgLwPolyline class represents a DWG LwPolyline

 * 

 * @author jmorell

 */

public class DwgLwPolyline extends DwgObject 

        implements IDwgPolyline, IDwgExtrusionable, 

        IDwg3DTestable, IDwg2FMap, IDwgBlockMember{

        public DwgLwPolyline(int index) {

                super(index);

                // TODO Auto-generated constructor stub

        }

        private int flag;

        private double constWidth;

        private double elevation;

        private double thickness;

        private double[] normal;

        private Point2D[] 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;

        /**

         * @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 Point2D[] getVertices() {

                return vertices;

        }

        /**

         * @param vertices The vertices to set.

         */

        public void setVertices(Point2D[] 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();

                Point2D[] pts = getVertices();

                double[] bulges = getBulges();

                Point2D[] newPts = new Point2D[pts.length];

                double[] newBulges = null;

                if(bulges != null){

                        newBulges = new double[bulges.length];

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

                }else{

                        bulges = new double[pts.length ];

                        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

                        newPts = new Point2D[pts.length+1];

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

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

                                newPts[j] = (Point2D)pts[j];

                        }

                        newPts[pts.length] = (Point2D)pts[0];

                        newBulges[pts.length] = 0;

                } else {

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

                                newPts[j] = (Point2D)pts[j];

                        }

                }

                if (pts.length>0) {

                        setBulges(newBulges);

                        Point2D[] 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;

                 Point2D[] 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();

         double[][] lwPolylinePoints3D = new double[vertices.length][3];

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

             lwPolylinePoints3D[j][0] = vertices[j].getX();

             lwPolylinePoints3D[j][1] = vertices[j].getY();

             lwPolylinePoints3D[j][2] = elev;

             lwPolylinePoints3D[j] = AcadExtrusionCalculator.extrude2(lwPolylinePoints3D[j], lwPolylineExt);

         }

         setElevation(elev);

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

             vertices[j] = new Point2D.Double(lwPolylinePoints3D[j][0], lwPolylinePoints3D[j][1]);

         }

         setVertices(vertices);

        }

        /* (non-Javadoc)

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

         */

        public boolean has3DData() {

                return getElevation() != 0.0;

        }

        public double getZ() {

                return getElevation();

        }

        public FShape toFMapGeometry(boolean is3DFile) {

                FPolyline2D lwpline = null;

                Point2D[] pts = getVertices();

                double elev = getElevation();

                if (pts != null) {

                        if (is3DFile) {

                                double[][] pline3D = new double[pts.length][3];

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

                                        pline3D[j][0] = pts[j].getX();

                                        pline3D[j][1] = pts[j].getY();

                                        pline3D[j][2] = elev;

                                }

                                lwpline = FMapUtil.points3DToFPolyline3D(pline3D);

                        } else {

                                lwpline = FMapUtil.points2DToFPolyline2D(pts);

                        }

                }

                return lwpline;

        }

        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;

                Point2D[] vertices = this.getVertices();

                if (vertices!=null) {

                    Point2D[] transformedVertices = new Point2D[vertices.length];

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

                            Point2D pointAux = new Point2D.Double(vertices[i].getX() - bPoint[0], vertices[i].getY() - bPoint[1]);

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

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

                                transformedVertices[i] = new Point2D.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);

        }

}