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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 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.DwgUtil;

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.util.AcadExtrusionCalculator;

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

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

/**

 * The DwgArc class represents a DWG Arc

 * 

 * @author jmorell

 */

public class DwgArc extends DwgObject 

        implements IDwgExtrusionable, IDwg3DTestable, IDwg2FMap, IDwgBlockMember {

        private double[] center;

        private double radius;

        private double thickness;

        private double[] extrusion;

        private double initAngle;

        private double endAngle;

        public DwgArc(int index) {

                super(index);

        }

        /**

         * Read an Arc in the DWG format Version 15

         * 

         * @param data Array of unsigned bytes obtained from the DWG binary file

         * @param offset The current bit offset where the value begins

         * @throws Exception If an unexpected bit value is found in the DWG file. Occurs

         *                    when we are looking for LwPolylines.

         */

        public void readDwgArcV15(int[] data, int offset) throws Exception {

                //System.out.println("readDwgArc() executed ...");

                int bitPos = offset;

                bitPos = readObjectHeaderV15(data, bitPos);

                ArrayList v = DwgUtil.getBitDouble(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                double x = ((Double)v.get(1)).doubleValue();

                v = DwgUtil.getBitDouble(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                double y = ((Double)v.get(1)).doubleValue();

                v = DwgUtil.getBitDouble(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                double z = ((Double)v.get(1)).doubleValue();

                double[] coord = new double[]{x, y, z};

                center = coord;

                v = DwgUtil.getBitDouble(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                double val = ((Double)v.get(1)).doubleValue();

                radius = val;

                v = DwgUtil.testBit(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                boolean flag = ((Boolean)v.get(1)).booleanValue();

                if (flag) {

                        val=0.0;

                } else {

                        v = DwgUtil.getBitDouble(data, bitPos);

                        bitPos = ((Integer)v.get(0)).intValue();

                        val = ((Double)v.get(1)).doubleValue();

                }

            thickness = val;

                v = DwgUtil.testBit(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                flag = ((Boolean)v.get(1)).booleanValue();

                if (flag) {

                         x = y = 0.0;

                         z = 1.0;

                } else {

                        v = DwgUtil.getBitDouble(data, bitPos);

                        bitPos = ((Integer)v.get(0)).intValue();

                        x = ((Double)v.get(1)).doubleValue();

                        v = DwgUtil.getBitDouble(data, bitPos);

                        bitPos = ((Integer)v.get(0)).intValue();

                        y = ((Double)v.get(1)).doubleValue();

                        v = DwgUtil.getBitDouble(data, bitPos);

                        bitPos = ((Integer)v.get(0)).intValue();

                        z = ((Double)v.get(1)).doubleValue();

                }

                coord = new double[]{x, y, z};

                extrusion = coord;

                v = DwgUtil.getBitDouble(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                val = ((Double)v.get(1)).doubleValue();

            initAngle = val;

                v = DwgUtil.getBitDouble(data, bitPos);

                bitPos = ((Integer)v.get(0)).intValue();

                val = ((Double)v.get(1)).doubleValue();

            endAngle = val;

                bitPos = readObjectTailV15(data, bitPos);

        }

        /**

         * @return Returns the center.

         */

        public double[] getCenter() {

                return center;

        }

        /**

         * @param center The center to set.

         */

        public void setCenter(double[] center) {

                this.center = center;

        }

        /**

         * @return Returns the endAngle.

         */

        public double getEndAngle() {

                return endAngle;

        }

        /**

         * @param endAngle The endAngle to set.

         */

        public void setEndAngle(double endAngle) {

                this.endAngle = endAngle;

        }

        /**

         * @return Returns the initAngle.

         */

        public double getInitAngle() {

                return initAngle;

        }

        /**

         * @param initAngle The initAngle to set.

         */

        public void setInitAngle(double initAngle) {

                this.initAngle = initAngle;

        }

        /**

         * @return Returns the radius.

         */

        public double getRadius() {

                return radius;

        }

        /**

         * @param radius The radius to set.

         */

        public void setRadius(double radius) {

                this.radius = radius;

        }

    /**

     * @return Returns the extrusion.

     */

    public double[] getExtrusion() {

        return extrusion;

    }

        /* (non-Javadoc)

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

         */

        public Object clone() {

                DwgArc dwgArc = new DwgArc(index);

                dwgArc.setType(type);

                dwgArc.setHandle(handle);

                dwgArc.setVersion(version);

                dwgArc.setMode(mode);

                dwgArc.setLayerHandle(layerHandle);

                dwgArc.setColor(color);

                dwgArc.setNumReactors(numReactors);

                dwgArc.setNoLinks(noLinks);

                dwgArc.setLinetypeFlags(linetypeFlags);

                dwgArc.setPlotstyleFlags(plotstyleFlags);

                dwgArc.setSizeInBits(sizeInBits);

                dwgArc.setExtendedData(extendedData);

                dwgArc.setGraphicData(graphicData);

                //dwgArc.setInsideBlock(insideBlock);

                dwgArc.setCenter(center);

                dwgArc.setRadius(radius);

                dwgArc.setThickness(thickness);

                dwgArc.setExtrusion(extrusion);

                dwgArc.setInitAngle(initAngle);

                dwgArc.setEndAngle(endAngle);

                return dwgArc;

        }

        /**

         * @return Returns the thickness.

         */

        public double getThickness() {

                return thickness;

        }

        /**

         * @param thickness The thickness to set.

         */

        public void setThickness(double thickness) {

                this.thickness = thickness;

        }

        /**

         * @param extrusion The extrusion to set.

         */

        public void setExtrusion(double[] extrusion) {

                this.extrusion = extrusion;

        }

        /* (non-Javadoc)

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

         */

        public void applyExtrussion() {

                 double[] arcCenter = getCenter();

         double[] arcExt = getExtrusion();

         arcCenter = AcadExtrusionCalculator.

                         CalculateAcadExtrusion(arcCenter, arcExt);

         setCenter(arcCenter);

        }

        /* (non-Javadoc)

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

         */

        public boolean has3DData() {

                return (getCenter()[2] != 0.0);

        }

        /* (non-Javadoc)

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

         */

        public FShape toFMapGeometry(boolean is3DFile) {

                double[] c = getCenter();

                Point2D center = new Point2D.Double(c[0], c[1]);

                double radius = getRadius();

                double initAngle = Math.toDegrees(getInitAngle());

                double endAngle = Math.toDegrees(getEndAngle());

                Point2D[] arc = GisModelCurveCalculator.calculateGisModelArc(

                                center, radius, initAngle, endAngle);

                FPolyline2D arcc;

                if (is3DFile) {

                        double[][] arc3D = new double[arc.length][3];

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

                                arc3D[j][0] = arc[j].getX();

                                arc3D[j][1] = arc[j].getY();

                                arc3D[j][2] = c[2];

                        }

                        arcc = FMapUtil.points3DToFPolyline3D(arc3D);

                } else {

                        arcc = FMapUtil.points2DToFPolyline2D(arc);

                }

                return arcc;

        }

        public String toString(){

                return "Arc";

        }

        /* (non-Javadoc)

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

         */

        public String toFMapString(boolean is3dFile) {

                if(is3dFile)

                        return "FPolyline3D";

                else

                        return "FPolyline2D";

        }

        /* (non-Javadoc)

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

         */

        public double getZ() {

                return getCenter()[2];

        }

        public void transform2Block(double[] bPoint, Point2D insPoint, double[] scale, double rot, List dwgObjectsWithoutBlocks, DwgFile callBack) {

                double[] center = getCenter();

                Point2D pointAux = new Point2D.Double(center[0] - bPoint[0], 

                                                                                        center[1] - 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));

                double laZ = center[2] * scale[2];

                double[] transformedCenter = new double[]{laX, laY, laZ};

                double radius = getRadius();         

                double transformedRadius = radius * scale[0];

                double initAngle = getInitAngle();

                double endAngle = getEndAngle();

        double transformedInitAngle = initAngle + rot;

        if (transformedInitAngle<0) {

            transformedInitAngle = transformedInitAngle + (2*Math.PI);

        } else if (transformedInitAngle>(2*Math.PI)) {

            transformedInitAngle = transformedInitAngle - (2*Math.PI);

        }

        double transformedEndAngle = endAngle + rot;

        if (transformedEndAngle<0) {

            transformedEndAngle = transformedEndAngle + (2*Math.PI);

        } else if (transformedEndAngle>(2*Math.PI)) {

            transformedEndAngle = transformedEndAngle - (2*Math.PI);

        }

                setCenter(transformedCenter);

                setRadius(transformedRadius);

                setInitAngle(transformedInitAngle);

                setEndAngle(transformedEndAngle);

                dwgObjectsWithoutBlocks.add(this);

        }

}