| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. 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:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.editing.gui.cad.tools;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.event.InputEvent;

import java.awt.event.MouseEvent;

import java.awt.geom.Point2D;

import java.util.ArrayList;

import org.apache.log4j.Logger;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.editing.gui.cad.DefaultCADTool;

import org.gvsig.editing.gui.cad.exception.CommandException;

import org.gvsig.editing.gui.cad.tools.smc.SplineCADToolContext;

import org.gvsig.editing.gui.cad.tools.smc.SplineCADToolContext.SplineCADToolState;

import org.gvsig.editing.layers.VectorialLayerEdited;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.operation.Draw;

import org.gvsig.fmap.geom.operation.DrawOperationContext;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

/**

 * CADTool Spline

 *

 * @author Vicente Caballero Navarro

 */

public class SplineCADTool extends DefaultCADTool {

        protected static Logger logger = Logger.getLogger(SplineCADTool.class.getName());

        protected SplineCADToolContext _fsm;

        protected ArrayList list = new ArrayList();

    protected boolean close=false;

    /**

     * Crea un nuevo SplineCADTool.

     */

    public SplineCADTool() {

    }

    /**

     * M?todo de incio, para poner el c?digo de todo lo que se requiera de una

     * carga previa a la utilizaci?n de la herramienta.

     */

    public void init() {

        _fsm = new SplineCADToolContext(this);

    }

    public void endGeometry() {

        try {

                        if (((FLyrVect)getVLE().getLayer()).getShapeType()==Geometry.TYPES.SURFACE && !close){

                                closeGeometry();

                        }

                } catch (ReadException e) {

                        NotificationManager.addError(e.getMessage(),e);

                }

        // No queremos guardar FGeometryCollections:

        Geometry newGeom = createSpline((Point2D[])list.toArray(new Point2D[0]));

        insertAndSelectGeometry(newGeom);

        _fsm = new SplineCADToolContext(this);

        list.clear();

        clearTemporalCache();

        close=false;

    }

    public void closeGeometry(){

            close=true;

        Point2D endPoint=new Point2D.Double(((Point2D)list.get(0)).getX(),((Point2D)list.get(0)).getY());

        list.add(endPoint);

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.gui.cad.CADTool#transition(com.iver.cit.gvsig.fmap.layers.FBitSet, double, double)

     */

    public void transition(double x, double y, InputEvent event) {

        _fsm.addPoint(x, y, event);

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.gui.cad.CADTool#transition(com.iver.cit.gvsig.fmap.layers.FBitSet, double)

     */

    public void transition(double d) {

        _fsm.addValue(d);

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.gui.cad.CADTool#transition(com.iver.cit.gvsig.fmap.layers.FBitSet, java.lang.String)

     */

    public void transition(String s) throws CommandException {

        if (!super.changeCommand(s)){

            _fsm.addOption(s);

        }

    }

    /**

     * Equivale al transition del prototipo pero sin pasarle como par?metro el

     * editableFeatureSource que ya estar? creado.

     *

     * @param sel Bitset con las geometr?as que est?n seleccionadas.

     * @param x par?metro x del punto que se pase en esta transici?n.

     * @param y par?metro y del punto que se pase en esta transici?n.

     */

    public void addPoint(double x, double y,InputEvent event) {

        SplineCADToolState actualState = (SplineCADToolState) _fsm.getPreviousState();

        String status = actualState.getName();

        if (status.equals("Spline.NextPoint") || status.equals("Spline.FirstPoint")) {

           list.add(new Point2D.Double(x,y));

           Geometry spline=createSpline((Point2D[])list.toArray(new Point2D[0]));

           addTemporalCache(spline);

        }

    }

    /**

     * M?todo para dibujar lo necesario para el estado en el que nos

     * encontremos.

     *

     * @param g Graphics sobre el que dibujar.

     * @param selectedGeometries BitSet con las geometr?as seleccionadas.

     * @param x par?metro x del punto que se pase para dibujar.

     * @param y par?metro x del punto que se pase para dibujar.

     */

    public void drawOperation(Graphics g, double x,

        double y) {

        SplineCADToolState actualState = _fsm.getState();

        String status = actualState.getName();

        if (status.equals("Spline.NextPoint") || status.equals("Spline.FirstPoint")) {

//                ArrayList points=new ArrayList();

                Point2D[] points =new Point2D[list.size()+1];

                Point2D[] auxPoints=(Point2D[])list.toArray(new Point2D[0]);

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

                                points[i]=(Point2D)auxPoints[i].clone();

                        }

//                points.addAll(list);

                points[points.length-1]=new Point2D.Double(x,y);

                Geometry spline=createSpline(points);

                ViewPort vp=getCadToolAdapter().getMapControl().getViewPort();

                DrawOperationContext doc=new DrawOperationContext();

                        doc.setGraphics((Graphics2D)g);

                        doc.setViewPort(vp);

                        doc.setSymbol(DefaultCADTool.selectionSymbol);

                try {

                        spline.invokeOperation(Draw.CODE,doc);

                        } catch (GeometryOperationNotSupportedException e) {

                                e.printStackTrace();

                        } catch (GeometryOperationException e) {

                                e.printStackTrace();

                        }

//                spline.draw((Graphics2D)g,vp,DefaultCADTool.selectionSymbol);

        }

                VectorialLayerEdited vle=getVLE();

                if (!vle.getLayer().isVisible())

                        return;

                try{

                        Image imgSel = vle.getSelectionImage();

                        if (imgSel!=null)

                                g.drawImage(imgSel, 0, 0, null);

                        Image imgHand = vle.getHandlersImage();

                        if (imgHand!=null)

                                g.drawImage(imgHand, 0, 0, null);

                }catch (Exception e) {

                }

    }

    /**

     * Dibuja el arco sobre el graphics.

     *

     * @param point Puntero del rat?n.

     * @param lastp ?ltimo punto de la polilinea.

     * @param antp Punto antepenultimo.

     * @param g Graphics sobre el que se dibuja.

     */

//    private void drawSpline(ArrayList ps, double x, double y, Graphics g) {

//            int num=ps.size()+1;

//            ArrayList points=new ArrayList();

//            points.addAll(list);

//            points.add(new Point2D.Double(x,y));

//            double[] px=new double[num];

//            double[] py=new double[num];

//            for (int i=0;i<num;i++) {

//                    Point2D p=(Point2D)points.get(i);

//                    px[i]=p.getX();

//                    py[i]=p.getY();

//

//            }

//            Spline splineX = new Spline(px);

//        Spline splineY = new Spline(py);

//        double x0 = 0;

//        double y0 = 0;

//        ViewPort vp=getCadToolAdapter().getMapControl().getViewPort();

//        for (int i = 0; i < px.length - 1; i++) {

//            x0 = splineX.fn(i, 0);

//            y0 = splineY.fn(i, 0);

//            Point2D p0=vp.fromMapPoint(x0,y0);

//            g.fillRect((int)p0.getX() - 4, (int)p0.getY() - 4, 8, 8);

//            for (int t = 1; t < 31; t++) {

//                double x1 = splineX.fn(i, ((double) t) / 30.0);

//                double y1 = splineY.fn(i, ((double) t) / 30.0);

//                Point2D p1=vp.fromMapPoint(x1,y1);

//                g.drawLine((int)p0.getX(), (int)p0.getY(), (int)p1.getX(), (int)p1.getY());

//                p0=p1;

//                //x0 = x1;

//                //y0 = y1;

//            }

//        }

//    }

    /**

     * Add a diferent option.

     *

     * @param sel DOCUMENT ME!

     * @param s Diferent option.

     */

    public void addOption(String s) {

    }

    /* (non-Javadoc)

     * @see com.iver.cit.gvsig.gui.cad.CADTool#addvalue(double)

     */

    public void addValue(double d) {

    }

    public void cancel(){

        list.clear();

        clearTemporalCache();

        close=false;

    }

    public void end() {

        /* CADExtension.setCADTool("Spline");

        PluginServices.getMainFrame().setSelectedTool("Spline"); */

    }

    public String getName() {

        return PluginServices.getText(this,"Spline_");

    }

    public String toString() {

        return "_Spline";

    }

    public boolean isApplicable(int shapeType) {

        switch (shapeType) {

        case Geometry.TYPES.POINT:

        case Geometry.TYPES.MULTIPOINT:

            return false;

        }

        return true;

    }

    public void endTransition(double x, double y, MouseEvent event) {

                _fsm.endPoint(x, y, event);

        }

//    private class Spline {

//            private double y[];

//            private double y2[];

//

//            /**

//             * The constructor calculates the second derivatives of the interpolating function

//             * at the tabulated points xi, with xi = (i, y[i]).

//             * Based on numerical recipes in C, http://www.library.cornell.edu/nr/bookcpdf/c3-3.pdf .

//             * @param y Array of y coordinates for cubic-spline interpolation.

//             */

//            public Spline(double y[]) {

//                    this.y = y;

//                    int n = y.length;

//                    y2 = new double[n];

//                    double u[] = new double[n];

//                    for (int i = 1; i < n - 1; i++) {

//                            y2[i] = -1.0 / (4.0 + y2[i - 1]);

//                            u[i] = (6.0 * (y[i + 1] - 2.0 * y[i] + y[i - 1]) - u[i - 1]) / (4.0 + y2[i - 1]);

//                    }

//                    for (int i = n - 2; i >= 0; i--) {

//                            y2[i] = y2[i] * y2[i + 1] + u[i];

//                    }

//            }

//

//            /**

//             * Returns a cubic-spline interpolated value y for the point between

//             * point (n, y[n]) and (n+1, y[n+1), with t ranging from 0 for (n, y[n])

//             * to 1 for (n+1, y[n+1]).

//             * @param n The start point.

//             * @param t The distance to the next point (0..1).

//             * @return A cubic-spline interpolated value.

//             */

//            public double fn(int n, double t) {

//                    return t * y[n + 1] - ((t - 1.0) * t * ((t - 2.0) * y2[n] - (t + 1.0) * y2[n + 1])) / 6.0 + y[n] - t * y[n];

//            }

//

//    }

}