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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.ArrayList;

import java.util.List;

import java.util.Map;

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

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

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

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

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

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.dwg.IDwgVertex;

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

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

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

/**

 * The DwgPolyline2D class represents a DWG Polyline2D

 * 

 * @author jmorell

 */

public class DwgPolyline2D extends DwgObject 

        implements IDwgPolyline, IDwgExtrusionable, IDwg3DTestable, IDwg2FMap, IDwgBlockMember{

        private int flags;

        private int curveType;

        private double initWidth;

        private double endWidth;

        private double thickness;

        private double elevation;

        private double[] extrusion;

        private DwgHandleReference firstVertexHandle = null;

        private DwgHandleReference lastVertexHandle = null;

        private DwgHandleReference seqendHandle = null;

        private List vertices;

        private double[] bulges;

        public DwgPolyline2D(int index) {

                super(index);

                vertices = new ArrayList();

        }

        /**

         * @return Returns the firstVertexHandle.

         */

        public DwgHandleReference getFirstVertexHandle() {

                return firstVertexHandle;

        }

        /**

         * @param firstVertexHandle The firstVertexHandle to set.

         */

        public void setFirstVertexHandle(DwgHandleReference firstVertexHandle) {

                this.firstVertexHandle = firstVertexHandle;

        }

        /**

         * @return Returns the flags.

         */

        public int getFlags() {

                return flags;

        }

        /**

         * @param flags The flags to set.

         */

        public void setFlags(int flags) {

                this.flags = flags;

        }

        /**

         * @return Returns the lastVertexHandle.

         */

        public DwgHandleReference getLastVertexHandle() {

                return lastVertexHandle;

        }

        /**

         * @param lastVertexHandle The lastVertexHandle to set.

         */

        public void setLastVertexHandle(DwgHandleReference lastVertexHandle) {

                this.lastVertexHandle = lastVertexHandle;

        }

        /**

         * @return Returns the pts.

         */

        public List getPts() {

                return vertices;

        }

        /**

         * @param pts The pts to set.

         */

        public void setPts(List pts) {

                this.vertices = pts;

        }

        /**

         * @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 initWidth.

         */

        public double getInitWidth() {

                return initWidth;

        }

        /**

         * @param initWidth The initWidth to set.

         */

        public void setInitWidth(double initWidth) {

                this.initWidth = initWidth;

        }

        /**

         * @return Returns the seqendHandle.

         */

        public DwgHandleReference getSeqendHandle() {

                return seqendHandle;

        }

        /**

         * @param seqendHandle The seqendHandle to set.

         */

        public void setSeqendHandle(DwgHandleReference seqendHandle) {

                this.seqendHandle = seqendHandle;

        }

        /**

         * @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 curveType.

         */

        public int getCurveType() {

                return curveType;

        }

        /**

         * @param curveType The curveType to set.

         */

        public void setCurveType(int curveType) {

                this.curveType = curveType;

        }

        /**

         * @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 endWidth.

         */

        public double getEndWidth() {

                return endWidth;

        }

        /**

         * @param endWidth The endWidth to set.

         */

        public void setEndWidth(double endWidth) {

                this.endWidth = endWidth;

        }

        /**

         * @return Returns the extrusion.

         */

        public double[] getExtrusion() {

                return extrusion;

        }

        /**

         * @param extrusion The extrusion to set.

         */

        public void setExtrusion(double[] extrusion) {

                this.extrusion = extrusion;

        }

        public void calculateGisModel(DwgFile dwgFile){

                int flags = getFlags();

//                En estas dos lineas de abajo y en el resto del metodo

//                se mantiene el mecanismo anterior al refactoring.

//                TODO: Pensar si deberiamos coger el handle completo.

//                Tal vez deberiamos tomar el handle completo y evaluar

//                a donde apuntan (pueden haber 2 handles con codigo y offset

//                distintos y que, sin embargo apunten al mismo objeto).

                int firstHandle = getFirstVertexHandle().getOffset();

                int lastHandle = getLastVertexHandle().getOffset();

                ArrayList pts = new ArrayList();

                ArrayList bulges = new ArrayList();

                double[] pt = new double[3];

                double bulge = 0d;

                DwgObject first = dwgFile.getDwgObjectFromHandle(firstHandle);

                DwgObject last = dwgFile.getDwgObjectFromHandle(lastHandle);

                if(first == null || last == null){

                        System.out.println("Polyline2D con vertices inicial o final a null");

                        return;

                }

                if(!(first instanceof DwgVertex2D)){

                        System.out.println("El primer vertice de Polyline2D es "+

                                                        first.getClass().getName());

                        return;

                }

                if(!(last instanceof DwgVertex2D)){

                        System.out.println("El primer vertice de Polyline2D es "+

                                                        first.getClass().getName());

                        return;

                }

                 int firstObjIdx = dwgFile.getIndexOf(first);

                 int lastObjIdx =  dwgFile.getIndexOf(last);

                 if(firstObjIdx == -1 || lastObjIdx == -1){

                         System.out.println("Calculate GIS Model: Problemas en la LinkedList: 1?="+firstObjIdx+",Ultimo="+lastObjIdx);

                         return;

                 }

//                 pt = ((DwgVertex2D)first).getPoint();

//                 pts.add(new Point2D.Double(pt[0], pt[1]));

//                 bulge = ((DwgVertex2D)first).getBulge();

//                 bulges.add(new Double(bulge));

                 for(int i = firstObjIdx; i <= lastObjIdx; i++){

                         DwgObject obj = dwgFile.getDwgObject(i);

                         if(obj instanceof DwgVertex2D){

                                 DwgVertex2D vertex = (DwgVertex2D) obj;

                                 pt = vertex.getPoint();

                                pts.add(new Point2D.Double(pt[0], pt[1]));

                                bulge = vertex.getBulge();

                                bulges.add(new Double(bulge));

                         }else{

                                 System.out.println("Encontrado "+obj.getClass().getName()+" en la lista de vertices de Polyline2D");

                         }

                 }//for

                if (pts.size()>0) {

                        List newPts = new ArrayList();

                        if ((flags & 0x1)==0x1) {

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

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

                                }

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

                                bulges.add(new Double(0));

                        } else {

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

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

                                }

                        }

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

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

                                bs[j] = ((Double)bulges.get(j)).doubleValue();

                        }

                        setBulges(bs);

                        List points = GisModelCurveCalculator.

                                        calculateGisModelBulge(newPts, bs);

                        setPts(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 ...

                }

        }

        //TODO Este metodo es antiguo y MUY INEFICIENTE

        //No obstante lo dejo porque hace referencia a SeqEnd y a un posible bug

        public void calculateGisModel(List dwgObjects) {

                int flags = getFlags();

//                En estas dos lineas de abajo y en el resto del metodo

//                se mantiene el mecanismo anterior al refactoring.

//                TODO: Pensar si deberiamos coger el handle completo.

//                Tal vez deberiamos tomar el handle completo y evaluar

//                a donde apuntan (pueden haber 2 handles con codigo y offset

//                distintos y que, sin embargo apunten al mismo objeto).

                int firstHandle = getFirstVertexHandle().getOffset();

                int lastHandle = getLastVertexHandle().getOffset();

                ArrayList pts = new ArrayList();

                ArrayList bulges = new ArrayList();

                double[] pt = new double[3];

                //TODO Esto cambiarlo. Es lento y poco elegante

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

                        DwgObject firstVertex = (DwgObject)dwgObjects.get(j);

                        if (firstVertex instanceof DwgVertex2D) {

                                int vertexHandle = firstVertex.getHandle().getOffset();

                                if (vertexHandle==firstHandle) {

                                        int k=0;

                                        while (true) {

                                                DwgObject vertex = (DwgObject)dwgObjects.get(j+k);

                                                int vHandle = vertex.getHandle().getOffset();

                                                if (vertex instanceof DwgVertex2D) {

                                                        pt = ((DwgVertex2D)vertex).getPoint();

                                                        pts.add(new Point2D.Double(pt[0], pt[1]));

                                                        double bulge = ((DwgVertex2D)vertex).getBulge();

                                                        bulges.add(new Double(bulge));

                                                        k++;

                                                        if (vHandle==lastHandle && vertex instanceof DwgVertex2D) {

                                                                break;

                                                        }

                                                } else if (vertex instanceof DwgSeqend) {

                            // 051116, jmorell: Polil?neas_ACAD2000.dwg tiene un DwgSeqend en mitad de

                            //una secuencia de v?rtices. Precauci?n con esto puesto que es posible que esta

                            // condici?n fuera requerida en la carga de otros DWGs.

                            //break;

                            k++;

                                                }

                                        }//while

                                }//if first handle

                        }//if

                }//for

                if (pts.size()>0) {

                        List newPts = new ArrayList();

                        if ((flags & 0x1)==0x1) {

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

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

                                }

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

                                bulges.add(new Double(0));

                        } else {

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

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

                                }

                        }

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

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

                                bs[j] = ((Double)bulges.get(j)).doubleValue();

                        }

                        setBulges(bs);

                        List points = GisModelCurveCalculator.

                                        calculateGisModelBulge(newPts, bs);

                        setPts(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(getPts() == null)

                        return;

                  List vertices = getPts();

              double[] polyline2DExt = getExtrusion();

              double elev = getElevation();

              double[][] polylinePoints3D = new double[vertices.size()][3];

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

                  polylinePoints3D[j][0] = ((double[])vertices.get(j))[0];

                  polylinePoints3D[j][1] = ((double[])vertices.get(j))[1];

                  polylinePoints3D[j][2] = elev;

                  polylinePoints3D[j] = AcadExtrusionCalculator.extrude2(polylinePoints3D[j], polyline2DExt);

              }

              setElevation(elev);

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

                  vertices.add(new double[]{((double[])polylinePoints3D[j])[0], ((double[])polylinePoints3D[j])[1]});

              }

              setPts(vertices);

        }

        /* (non-Javadoc)

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

         */

        public boolean has3DData() {

                return (getElevation() != 0.0);

        }

        /* (non-Javadoc)

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

         */

        public double getZ() {

                return getElevation();

        }

        /* (non-Javadoc)

         * @see com.iver.cit.jdwglib.dwg.IDwg2FMap#toFMapGeometry(boolean)

         */

        public IGeometry toFMapGeometry(boolean is3DFile) {

                FPolyline2D pline = null;

                List points = getPts();

                double elev = getElevation();

                if (points != null) {

                        if (is3DFile) {

                                List pline3D = new ArrayList();

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

                                        double[] point = new double[3];

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

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

                                        point[2] = elev;

                                        pline3D.add(point);

                                }

                                pline = FMapUtil.points3DToFPolyline3D(pline3D);

                        } else {

                                pline = FMapUtil.points2DToFPolyline2D(points);

                        }

                }

                return ShapeFactory.createGeometry(pline);

        }

        /* (non-Javadoc)

         * @see com.iver.cit.jdwglib.dwg.IDwg2FMap#toFMapString(boolean)

         */

        public String toFMapString(boolean is3DFile) {

                if(is3DFile)

                        return "FPolyline3D";

                else

                        return "FPolyline2D";

        }

        public String toString(){

                return "Polyline2D";

        }

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

                        double[] scale, double rot, 

                        List dwgObjectsWithoutBlocks, 

                        Map handleObjWithoutBlocks, DwgFile callBack) {

                DwgPolyline2D transformedEntity = null;

                List vertices = this.getPts();

                if (vertices != null) {

                    List transformedVertices = new ArrayList();

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

                                double[] pointAux = null;

                            pointAux = new double[]{((double[]) vertices.get(i))[0] - bPoint[0],

                                            ((double[]) vertices.get(i))[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});

                        }//for

                        transformedEntity = (DwgPolyline2D)this.clone();

                        transformedEntity.setPts(transformedVertices);

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

                        dwgObjectsWithoutBlocks.add(transformedEntity);

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

                }

        }

        /* (non-Javadoc)

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

         */

        public Object clone(){

                DwgPolyline2D obj = new DwgPolyline2D(index);

                this.fill(obj);

                return obj;

        }

        protected void fill(DwgObject obj){

                super.fill(obj);

                DwgPolyline2D myObj = (DwgPolyline2D)obj;

                myObj.setBulges(bulges);

                myObj.setCurveType(curveType);

                myObj.setElevation(elevation);

                myObj.setEndWidth(endWidth);

                myObj.setExtrusion(extrusion);

                myObj.setFirstVertexHandle(firstVertexHandle);

                myObj.setFlags(flags);

                myObj.setInitWidth(initWidth);

                myObj.setLastVertexHandle(lastVertexHandle);

                myObj.setPts(vertices);

                myObj.setSeqendHandle(seqendHandle);

                myObj.setThickness(thickness);

        }

        public void addVertex(IDwgVertex vertex) {

                vertices.add(vertex.getPoint());

        }

}