| gvSIG desktop 1

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

*

* Copyright (C) 2005 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.

*/

package com.iver.cit.gvsig.animation.interpolator;

import java.util.List;

import com.iver.cit.gvsig.animation.animatedObject.AnimationObjectTransparency;

import com.iver.cit.gvsig.animation.keyFrame.KeyFrameTransparency;

import com.iver.cit.gvsig.animation.keyframe.IKeyFrame;

import com.iver.cit.gvsig.animation.keyframe.interpolator.IInterpolator;

import com.iver.cit.gvsig.animation.keyframe.interpolator.IInterpolatorTimeFuntion;

import com.iver.cit.gvsig.fmap.layers.FLyrDefault;

import com.iver.cit.gvsig.project.documents.view.gui.BaseView;

import com.iver.utiles.XMLEntity;

/**

 *  Class to interpolate the transparency of a activated layer.

 */

public class InterpolatorTransparency implements IInterpolator {

        public BaseView view;

        private String description = "Interpolaci?n basada en Transparencias";

        private String name = "InterpolatorTransparency";

        private AnimationObjectTransparency animationObjectTransparency = new AnimationObjectTransparency() ;

        public IKeyFrame interpolate(List<IKeyFrame> kfList, int index, double time) {

                KeyFrameTransparency KF = new KeyFrameTransparency();

                // if the list of keyframes is empty.

                if (kfList == null)

                        return null;

                switch (kfList.size()) {

                // this case when there are only has 2 keyframes

                case 2:

                        KeyFrameTransparency kf1 = (KeyFrameTransparency) kfList.get(0);

                        KeyFrameTransparency kf2 = (KeyFrameTransparency) kfList.get(1);

                        if (index == 1) {

                                KeyFrameTransparency kaux = kf1;

                                kf1 = kf2;

                                kf2 = kaux;

                        }

                        if ((kf1 == null) ||(kf2 == null))

                                return null;

                        //initial transparency level.

                        double transparencia1 = kf1.getLevelTransparency();

                        //final transparency level.

                        double transparencia2 = kf2.getLevelTransparency();

                        // Object to animate getting the keyframe.

                        FLyrDefault fd1 = (FLyrDefault) kf1.getAnimatedObject();

                        //FLyrDefault fd2 = (FLyrDefault) kf2.getAnimatedObject();

                        double time1 = kf1.getTime();//initial time.

                        double time2 = kf2.getTime();//final time.

                        double valorTrans = linearInterpolate(transparencia1, transparencia2, time1, time2, time);

                        System.out.println("valor interpolado " + valorTrans);

                        //Creating the keyframe KF to return.

                                try {

                                        KF.setLevelTransparency((int)valorTrans);

                                        KF.setAnimatedObject(fd1);// keyframe with the layer and the new transparecy to apply.

                                } catch (Exception e) {

                                        // TODO Auto-generated catch block

                                        e.printStackTrace();

                                }

                }

                return KF;

        }

        private double linearInterpolate(double minX, double minX2, double timePos,

                        double timePos2, double time) {

                // P1 + (P2-P1)*((t-t1)/(t2-t1))

                return (minX + (minX2 - minX)

                                * ((time - timePos) / (timePos2 - timePos)));

        }

        public Object getAnimatedObject() {

                return this.animationObjectTransparency;

        }

        public void setAnimatedObject(Object object) {

                this.animationObjectTransparency = (AnimationObjectTransparency) object;

                this.view = (BaseView) animationObjectTransparency.getAnimatedView();

        }

        public IInterpolatorTimeFuntion getFuntion() {

                return null;

        }

        public void setFuntion(IInterpolatorTimeFuntion arg0) {

                // TODO Auto-generated method stub

        }

        public String getClassName() {

                return this.getClass().getName();

        }

        public String getDescription() {

                return this.description;

        }

        public String getName() {

                return this.name;

        }

        /*

         * IPersistence methods.

         */

        public XMLEntity getXMLEntity() {

                XMLEntity xml = new XMLEntity();        

                xml.putProperty("className", this.getClassName());

                xml.putProperty("description", this.description);

                return xml;

        }

        public void setXMLEntity(XMLEntity xml) {

                if (xml.contains("description"))

                        this.description = xml.getStringProperty("description");

        }

}