Application: gvSIG desktop

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2015 gvSIG Association

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.geom.jts.primitive.curve.arc;

import java.awt.Shape;

import java.awt.geom.AffineTransform;

import java.awt.geom.PathIterator;

import org.cresques.cts.CoordTransRuntimeException;

import org.cresques.cts.ICoordTrans;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.jts.gputils.DefaultGeneralPathX;

import org.gvsig.fmap.geom.jts.primitive.curve.AbstractCurve;

import org.gvsig.fmap.geom.jts.primitive.point.PointJTS;

import org.gvsig.fmap.geom.jts.util.UtilFunctions;

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

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

import org.gvsig.fmap.geom.primitive.Arc;

import org.gvsig.fmap.geom.primitive.GeneralPathX;

import org.gvsig.fmap.geom.primitive.OrientablePrimitive;

import org.gvsig.fmap.geom.primitive.Point;

/**

 * @author fdiaz

 *

 */

public abstract class AbstractArc extends AbstractCurve implements Arc {

    /**

     *

     */

    private static final long serialVersionUID = 454301669807892457L;

    /**

     * @param subtype

     */

    protected AbstractArc(int subtype) {

        super(Geometry.TYPES.ARC, subtype);

    }

    protected Point init;

    /**

     * This is the middle point (belongs to the arc), not the center

     * of the circle/ellipse

     */

    protected Point middle;

    protected Point end;

    @Override

    public void setPoints(Point initialPoint, Point endPoint) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public double getCoordinateAt(int index, int dimension) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public OrientablePrimitive setCoordinateAt(int index, int dimension, double value) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public OrientablePrimitive addVertex(Point point) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public OrientablePrimitive addVertex(double x, double y) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public OrientablePrimitive addVertex(double x, double y, double z) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public void removeVertex(int index) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public Point getVertex(int index) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public int getNumVertices() {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public OrientablePrimitive insertVertex(int index, Point p) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public OrientablePrimitive setVertex(int index, Point p) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public void setGeneralPath(GeneralPathX generalPathX) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public void addMoveToVertex(Point point) {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public void closePrimitive() {

        String message = "Calling deprecated method setPoints of a arc";

        notifyDeprecated(message);

        throw new UnsupportedOperationException(message);

    }

    @Override

    public OrientablePrimitive ensureCapacity(int capacity) {

        // TODO Auto-generated method stub

        return this;

    }

    @Override

    public void reProject(ICoordTrans ct) {

        //FIXME: Esto solo ser?a correcto para transformaciones de traslaci?n, rotaci?n y escala

        // Ser?a incorrecto para las de deformaci?n en cizallamiento

        try {

        init.reProject(ct);

        middle.reProject(ct);

        end.reProject(ct);

        this.setProjection(ct.getPDest());

        } catch (CoordTransRuntimeException e){

            //Si ha fallado la reproyecci?n de alguno de los puntos, ponemos todas las coordenadas a 0

            init.setX(0);

            init.setY(0);

            middle.setX(0);

            middle.setY(0);

            end.setX(0);

            end.setY(0);

        }

    }

    @Override

    public void transform(AffineTransform at) {

        //FIXME: Esto solo ser?a correcto para transformaciones de traslaci?n, rotaci?n y escala

        // Ser?a incorrecto para las de deformaci?n en cizallamiento

        init.transform(at);

        middle.transform(at);

        end.transform(at);

    }

    @Override

    public int getDimension() {

        return init.getDimension();

    }

    @Override

    public Shape getShape(AffineTransform affineTransform) {

        return new DefaultGeneralPathX(getPathIterator(affineTransform),false,0);

    }

    @Override

    public Shape getShape() {

        return getShape(null);

    }

    @Override

    public boolean is3D() {

        return ((PointJTS)init).is3D();

    }

    /**

     * @param point

     * @return

     */

    protected abstract Point fixPoint(Point point);

    @Override

    public void setPoints(Point startPoint, Point midPoint, Point endPoint) {

        init = fixPoint(startPoint);

        middle = fixPoint(midPoint);

        end = fixPoint(endPoint);

    }

    @Override

    public Point getInitPoint() {

        return init;

    }

    @Override

    public Point getEndPoint() {

        return end;

    }

    @Override

    public Point getMiddlePoint() {

        return middle;

    }

    /**

     * Leaves the angle between PI and -PI

     * @param angle (radians)

     * @return

     */

    protected double normalizeAngle(double angle) {

        if (angle > -Math.PI && angle <= Math.PI) {

            return angle;

        }

        if (angle == Double.NEGATIVE_INFINITY || angle == Double.POSITIVE_INFINITY) {

            return 0;

        }

        double abs_ang = Math.abs(angle);

        double remove = Math.floor(abs_ang / (2 * Math.PI));

        remove = remove * 2 * Math.PI;

        double resp = 0;

        if (angle > 0) {

            resp = angle - remove;

            if (resp > Math.PI) {

                // final adjustment

                resp = resp - 2 * Math.PI;

            }

        } else {

            resp = angle + remove;

            if (resp <= -Math.PI) {

                // final adjustment

                resp = resp + 2 * Math.PI;

            }

        }

        return resp;

    }

    @Override

    public void setPointsStartExt(Point center, double radius, double startAngle, double angleExt) {

        setPoints(center, radius, startAngle, angleExt);

    }

    @Override

    public void setPointsStartEnd(Point center, double radius, double startAngle, double endAngle) {

        if (startAngle == endAngle) {

            setPointsStartExt(center, radius, startAngle, 0);

        } else {

            /*

             * Normalize then force clockwise:

             */

            double norm_start = normalizeAngle(startAngle);

            double norm_end = normalizeAngle(endAngle);

            double ang_ext = 0;

            // clockwise

            // ang_ext must be positive

            if (norm_start >= norm_end) {

                ang_ext = norm_start - norm_end;

            } else {

                ang_ext = 2 * Math.PI - (norm_end - norm_start);

            }

            setPointsStartExt(center, radius, startAngle, ang_ext);

            // finally call other method with ang_ext

        }

    }

    @Override

    public GeneralPathX getGeneralPath() {

       GeneralPathX gp = new DefaultGeneralPathX(getPathIterator(null, getManager().getFlatness()), is3D(), 0.0);

        return gp;

    }

    @Override

    public PathIterator getPathIterator(AffineTransform at) {

        return getPathIterator(at, getManager().getFlatness());

    }

    @Override

    public PathIterator getPathIterator(AffineTransform at, double flatness) {

        java.awt.geom.Point2D.Double p1 = new java.awt.geom.Point2D.Double(init.getX(), init.getY());

        java.awt.geom.Point2D.Double p2 = new java.awt.geom.Point2D.Double(middle.getX(), middle.getY());

        java.awt.geom.Point2D.Double p3 = new java.awt.geom.Point2D.Double(end.getX(), end.getY());

        java.awt.geom.Arc2D arco = UtilFunctions.createArc(p1, p2, p3);

        if (arco == null) {

            logger.info("Did not set arc points (probably aligned points): " + p1.getX() + " " + p1.getY() + " :: "

                + p2.getX() + " " + p2.getY() + " :: " + p3.getX() + " " + p3.getY());

            throw new IllegalArgumentException("Did not set arc points (probably aligned points).");

        }

        return arco.getPathIterator(at, flatness);

    }

    @Override

    public void flip() throws GeometryOperationNotSupportedException, GeometryOperationException {

        Point aux = init;

        init = end;

        end = aux;

    }

    @Override

    public double getStartAngle() throws GeometryOperationNotSupportedException, GeometryOperationException {

        return getAngle(getCenterPoint(), getInitPoint());

    }

    @Override

    public double getEndAngle() throws GeometryOperationNotSupportedException, GeometryOperationException {

        return getAngle(getCenterPoint(), getEndPoint());

    }

    private double getAngle(Point start, Point end) throws GeometryOperationNotSupportedException, GeometryOperationException {

        double angle = Math.acos((end.getX() - start.getX()) / start.distance(end));

        if (start.getY() > end.getY()) {

            angle = -angle;

        }

        if (angle < 0) {

            angle += (2 * Math.PI);

        }

        return angle;

    }

    @Override

    public Geometry offset(double distance) throws GeometryOperationNotSupportedException, GeometryOperationException {

        // TODO Auto-generated method stub

        Point center = getCenterPoint();

        double radius = center.distance(init);

        double scale = (radius+distance)/radius;

        AffineTransform at = getScaleAffineTransform(center, scale);

        Geometry cloned = this.cloneGeometry();

        cloned.transform(at);

        return cloned;

    }

    protected AffineTransform getScaleAffineTransform(Point center, Double scale)

        throws GeometryOperationNotSupportedException,

        GeometryOperationException {

        AffineTransform translate =

            AffineTransform

                .getTranslateInstance(-center.getX(), -center.getY());

        AffineTransform scaleTransform = AffineTransform.getScaleInstance(scale,scale);

        AffineTransform inverseTranslate =

            AffineTransform.getTranslateInstance(center.getX(), center.getY());

        AffineTransform at = new AffineTransform(translate);

        at.preConcatenate(scaleTransform);

        at.preConcatenate(inverseTranslate);

        return at;

    }

    @Override

    public boolean canBeTransformed(AffineTransform at) {

        return false;

    }

    @Override

    public boolean canBeReprojected(ICoordTrans ct) {

        return false;

    }

    @Override

    public Geometry force2D() throws GeometryOperationNotSupportedException, GeometryOperationException {

        Arc2D other = new Arc2D();

        other.setProjection(this.getProjection());

        Point clonedInit = (Point)init.force2D();

        Point clonedMiddle = (Point)middle.force2D();

        Point clonedEnd = (Point)end.force2D();

        other.setPoints(clonedInit, clonedMiddle, clonedEnd);

        return other;

    }

}