svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.geometry / org.gvsig.fmap.geometry.jts / src / main / java / org / gvsig / fmap / geom / jts / primitive / curve / spline / AbstractSpline.java @ 42281
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/* gvSIG. Desktop Geographic Information System.
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*
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* Copyright ? 2007-2015 gvSIG Association
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.fmap.geom.jts.primitive.curve.spline; |
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import java.awt.Shape; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.PathIterator; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import com.vividsolutions.jts.geom.Coordinate; |
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import org.apache.commons.lang3.StringUtils; |
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import org.cresques.cts.ICoordTrans; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.GeometryException; |
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import org.gvsig.fmap.geom.aggregate.MultiLine; |
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import org.gvsig.fmap.geom.aggregate.MultiPoint; |
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import org.gvsig.fmap.geom.aggregate.MultiPolygon; |
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import org.gvsig.fmap.geom.exception.ReprojectionRuntimeException; |
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import org.gvsig.fmap.geom.handler.Handler; |
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import org.gvsig.fmap.geom.jts.gputils.DefaultGeneralPathX; |
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import org.gvsig.fmap.geom.jts.gputils.GeneralPathXIterator; |
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import org.gvsig.fmap.geom.jts.primitive.curve.AbstractCurve; |
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import org.gvsig.fmap.geom.jts.primitive.point.Point2D; |
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import org.gvsig.fmap.geom.jts.primitive.point.PointJTS; |
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import org.gvsig.fmap.geom.jts.util.ArrayListCoordinateSequence; |
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import org.gvsig.fmap.geom.jts.util.JTSUtils; |
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import org.gvsig.fmap.geom.jts.util.ReadOnlyCoordinates; |
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import org.gvsig.fmap.geom.operation.GeometryOperationException; |
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import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException; |
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import org.gvsig.fmap.geom.primitive.GeneralPathX; |
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import org.gvsig.fmap.geom.primitive.IGeneralPathX; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.geom.primitive.Spline; |
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/**
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* @author fdiaz
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*
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*/
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public abstract class AbstractSpline extends AbstractCurve implements Spline { |
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/**
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*
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*/
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private static final long serialVersionUID = -1562503359430991082L; |
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private static final Logger logger = LoggerFactory.getLogger(AbstractSpline.class); |
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protected ArrayListCoordinateSequence coordinates;
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protected PointJTS anyVertex;
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protected static final double SUBSEGMENTS = 30.0; |
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/**
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*
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*/
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protected AbstractSpline(int subtype) { |
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super(Geometry.TYPES.SPLINE, subtype);
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} |
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/**
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*
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*/
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public AbstractSpline(int subtype, Coordinate[] coordinates, PointJTS aVertex) { |
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this(subtype);
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this.coordinates = new ArrayListCoordinateSequence(new ReadOnlyCoordinates(coordinates)); |
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anyVertex = aVertex; |
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.jts.GeometryJTS#getJTS()
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*/
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public com.vividsolutions.jts.geom.Geometry getJTS() {
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// if (ps[0].getX()==ps[ps.length-1].getX() && ps[0].getY()==ps[ps.length-1].getY())
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// gpx.closePath();
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return JTSUtils.createJTSLineString(getSplineCoordinates());
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} |
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protected abstract ArrayListCoordinateSequence getSplineCoordinates(); |
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static class Spline { |
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private double y[]; |
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private double y2[]; |
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/**
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* The constructor calculates the second derivatives of the interpolating function
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* at the tabulated points xi, with xi = (i, y[i]).
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* Based on numerical recipes in C, http://www.library.cornell.edu/nr/bookcpdf/c3-3.pdf .
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* @param y Array of y coordinates for cubic-spline interpolation.
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*/
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public Spline(double y[]) { |
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this.y = y;
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int n = y.length;
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y2 = new double[n]; |
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double u[] = new double[n]; |
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for (int i = 1; i < n - 1; i++) { |
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y2[i] = -1.0 / (4.0 + y2[i - 1]); |
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u[i] = (6.0 * (y[i + 1] - 2.0 * y[i] + y[i - 1]) - u[i - 1]) / (4.0 + y2[i - 1]); |
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} |
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for (int i = n - 2; i >= 0; i--) { |
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y2[i] = y2[i] * y2[i + 1] + u[i];
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} |
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} |
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/**
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* Returns a cubic-spline interpolated value y for the point between
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* point (n, y[n]) and (n+1, y[n+1), with t ranging from 0 for (n, y[n])
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* to 1 for (n+1, y[n+1]).
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* @param n The start point.
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* @param t The distance to the next point (0..1).
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* @return A cubic-spline interpolated value.
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*/
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public double fn(int n, double t) { |
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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]; |
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} |
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#getVertex(int)
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*/
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public Point getVertex(int index) { |
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anyVertex.setJTSCoordinate(coordinates.get(index)); |
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return anyVertex;
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} |
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/*
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* (non-Javadoc)
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*
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* @see
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* org.gvsig.fmap.geom.primitive.OrientablePrimitive#addVertex(org.gvsig
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* .fmap.geom.primitive.Point)
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*/
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public void addVertex(Point point) { |
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point = fixPoint(point); |
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coordinates.add(((PointJTS) point).getJTSCoordinate()); |
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} |
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/*
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* (non-Javadoc)
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*
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* @see
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* org.gvsig.fmap.geom.primitive.Curve#setPoints(org.gvsig.fmap.geom.primitive
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* .Point, org.gvsig.fmap.geom.primitive.Point)
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*/
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public void setPoints(Point initialPoint, Point endPoint) { |
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initialPoint = fixPoint(initialPoint); |
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endPoint = fixPoint(endPoint); |
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coordinates.clear(); |
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addVertex(initialPoint); |
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addVertex(endPoint); |
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} |
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/**
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* @param initialPoint
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* @return
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*/
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protected abstract Point fixPoint(Point point); |
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/*
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* (non-Javadoc)
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*
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* @see
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* org.gvsig.fmap.geom.primitive.OrientablePrimitive#getCoordinateAt(int,
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* int)
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*/
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public double getCoordinateAt(int index, int dimension) { |
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return coordinates.getOrdinate(index, dimension);
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} |
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/*
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* (non-Javadoc)
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*
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* @see
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* org.gvsig.fmap.geom.primitive.OrientablePrimitive#setCoordinateAt(int,
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* int, double)
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*/
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public void setCoordinateAt(int index, int dimension, double value) { |
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coordinates.setOrdinate(index, dimension, value); |
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#removeVertex(int)
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*/
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public void removeVertex(int index) { |
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coordinates.remove(index); |
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#getNumVertices()
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*/
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public int getNumVertices() { |
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return coordinates.size();
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#insertVertex(int,
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* org.gvsig.fmap.geom.primitive.Point)
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*/
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public void insertVertex(int index, Point p) { |
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p = fixPoint(p); |
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coordinates.add(index, ((PointJTS) p).getJTSCoordinate()); |
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#setVertex(int,
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* org.gvsig.fmap.geom.primitive.Point)
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*/
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public void setVertex(int index, Point p) { |
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p = fixPoint(p); |
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coordinates.set(index, ((PointJTS) p).getJTSCoordinate()); |
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} |
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/*
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* (non-Javadoc)
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*
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* @see
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* org.gvsig.fmap.geom.primitive.OrientablePrimitive#setGeneralPath(org.
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* gvsig.fmap.geom.primitive.GeneralPathX)
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*/
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public void setGeneralPath(GeneralPathX generalPathX) { |
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PathIterator it = generalPathX.getPathIterator(null); |
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double[] segment = new double[6]; |
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int i = 0; |
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while(!it.isDone()){
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int type = it.currentSegment(segment);
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if(i==0){ |
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switch (type) {
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case IGeneralPathX.SEG_MOVETO:
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Point p = new Point2D(segment[0], segment[1]); |
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p = fixPoint(p); |
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coordinates.add(((PointJTS)p).getJTSCoordinate()); |
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break;
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default:
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String message = StringUtils.replace("Type of segment %(segment)s isn't SEG_MOVETO.","%(segment)s",String.valueOf(i)); |
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logger.warn(message); |
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throw new RuntimeException(message); |
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} |
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} else {
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//Dudo de que los casos SEG_QUADTO y SEG_CUBICTO est?n bien pero se hac?a lo mismo en la librer?a de geometr?as vieja.
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Point p;
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switch (type) {
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case IGeneralPathX.SEG_LINETO:
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p = new Point2D(segment[0], segment[1]); |
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p = fixPoint(p); |
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coordinates.add(((PointJTS)p).getJTSCoordinate()); |
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break;
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case IGeneralPathX.SEG_QUADTO:
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for (int j = 0; j <= 1; j++) { |
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p = new Point2D(segment[i], segment[i+1]); |
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p = fixPoint(p); |
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coordinates.add(((PointJTS) p).getJTSCoordinate()); |
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} |
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break;
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case IGeneralPathX.SEG_CUBICTO:
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for (int j = 0; j <= 2; j++) { |
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p = new Point2D(segment[i], segment[i+1]); |
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p = fixPoint(p); |
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coordinates.add(((PointJTS) p).getJTSCoordinate()); |
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} |
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break;
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case IGeneralPathX.SEG_CLOSE:
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coordinates.add(coordinates.get(0));
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break;
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default:
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String message = StringUtils.replace("The general path has a gap in segment %(segment)s.","%(segment)s",String.valueOf(i)); |
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logger.warn(message); |
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throw new RuntimeException(message); |
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} |
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} |
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it.next(); |
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i++; |
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} |
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} |
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/*
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* (non-Javadoc)
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*
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* @see
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* org.gvsig.fmap.geom.primitive.OrientablePrimitive#addMoveToVertex(org
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* .gvsig.fmap.geom.primitive.Point)
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*/
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public void addMoveToVertex(Point point) { |
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throw new UnsupportedOperationException(); |
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.primitive.OrientablePrimitive#closePrimitive()
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*/
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public void closePrimitive() { |
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if (!coordinates.get(0).equals(coordinates.get(coordinates.size()))) { |
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coordinates.add(coordinates.get(coordinates.size())); |
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} |
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} |
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/*
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* (non-Javadoc)
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*
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* @see
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* org.gvsig.fmap.geom.primitive.OrientablePrimitive#ensureCapacity(int)
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*/
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public void ensureCapacity(int capacity) { |
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coordinates.ensureCapacity(capacity); |
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} |
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/*
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* (non-Javadoc)
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*
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* @see org.gvsig.fmap.geom.Geometry#reProject(org.cresques.cts.ICoordTrans)
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*/
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public void reProject(ICoordTrans ct) { |
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if (ct == null) { |
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return;
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} |
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for (Iterator<Coordinate> iterator = coordinates.iterator(); iterator.hasNext();) { |
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Coordinate coordinate = (Coordinate) iterator.next(); |
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java.awt.geom.Point2D p = new java.awt.geom.Point2D.Double(coordinate.x, coordinate.y);
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try {
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p = ct.convert(p, p); |
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coordinate.x = p.getX(); |
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coordinate.y = p.getY(); |
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} catch (Exception exc) { |
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/*
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* This can happen when the reprojection lib is unable
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* to reproject (for example the source point
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* is out of the valid range and some computing
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* problem happens)
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*/
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throw new ReprojectionRuntimeException(ct.getPOrig(), ct.getPDest(), p, exc); |
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} |
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} |
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} |
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|
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/*
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* (non-Javadoc)
|
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*
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* @see
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* org.gvsig.fmap.geom.Geometry#transform(java.awt.geom.AffineTransform)
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*/
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public void transform(AffineTransform at) { |
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if (at == null) { |
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return;
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} |
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for (Iterator<Coordinate> iterator = coordinates.iterator(); iterator.hasNext();) { |
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Coordinate coordinate = (Coordinate) iterator.next(); |
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java.awt.geom.Point2D p = new java.awt.geom.Point2D.Double(coordinate.x, coordinate.y);
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at.transform(p, p); |
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coordinate.x = p.getX(); |
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coordinate.y = p.getY(); |
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} |
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} |
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|
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/*
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* (non-Javadoc)
|
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*
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* @see org.gvsig.fmap.geom.Geometry#getDimension()
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*/
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public int getDimension() { |
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return anyVertex.getDimension();
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} |
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|
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/*
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* (non-Javadoc)
|
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*
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* @see org.gvsig.fmap.geom.Geometry#getShape(java.awt.geom.AffineTransform)
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*/
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public Shape getShape(AffineTransform affineTransform) { |
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return new DefaultGeneralPathX(new SplineIterator(affineTransform),false,0); |
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} |
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|
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/*
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* (non-Javadoc)
|
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*
|
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* @see org.gvsig.fmap.geom.Geometry#getShape()
|
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*/
|
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public Shape getShape() { |
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return getShape(null); |
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} |
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|
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/*
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* (non-Javadoc)
|
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*
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* @see org.gvsig.fmap.geom.Geometry#getHandlers(int)
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*/
|
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public Handler[] getHandlers(int type) { |
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notifyDeprecated("Calling deprecated method getHandlers of a line");
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throw new UnsupportedOperationException("Calling deprecated method getHandlers of a line"); |
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} |
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|
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/*
|
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* (non-Javadoc)
|
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*
|
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* @see
|
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* org.gvsig.fmap.geom.Geometry#getPathIterator(java.awt.geom.AffineTransform
|
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* )
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*/
|
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public PathIterator getPathIterator(AffineTransform at) { |
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SplineIterator pi = new SplineIterator(at);
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return pi;
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} |
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|
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/*
|
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* (non-Javadoc)
|
449 |
*
|
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* @see
|
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* org.gvsig.fmap.geom.Geometry#getPathIterator(java.awt.geom.AffineTransform
|
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* , double)
|
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*/
|
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public PathIterator getPathIterator(AffineTransform at, double flatness) { |
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return getPathIterator(at);
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} |
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|
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/*
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* (non-Javadoc)
|
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*
|
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* @see org.gvsig.fmap.geom.Geometry#getGeneralPath()
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*/
|
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public GeneralPathX getGeneralPath() {
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return new DefaultGeneralPathX(new SplineIterator(null),false,0); |
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} |
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|
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public class SplineIterator extends GeneralPathXIterator { |
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|
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/** Transform applied on the coordinates during iteration */
|
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private AffineTransform at; |
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|
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/** True when the point has been read once */
|
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private boolean done; |
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private int index = 0; |
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|
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/**
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* Creates a new PointIterator object.
|
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*
|
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* @param p
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* The polygon
|
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* @param at
|
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* The affine transform applied to coordinates during
|
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* iteration
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*/
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public SplineIterator(AffineTransform at) { |
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super(new GeneralPathX()); |
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if (at == null) { |
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at = new AffineTransform(); |
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} |
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|
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this.at = at;
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done = false;
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} |
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|
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/**
|
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* Return the winding rule for determining the interior of the path.
|
497 |
*
|
498 |
* @return <code>WIND_EVEN_ODD</code> by default.
|
499 |
*/
|
500 |
public int getWindingRule() { |
501 |
return PathIterator.WIND_EVEN_ODD; |
502 |
} |
503 |
|
504 |
/**
|
505 |
* @see java.awt.geom.PathIterator#next()
|
506 |
*/
|
507 |
public void next() { |
508 |
done = (getJTS().getCoordinates().length == index++); |
509 |
} |
510 |
|
511 |
/**
|
512 |
* @see java.awt.geom.PathIterator#isDone()
|
513 |
*/
|
514 |
public boolean isDone() { |
515 |
return done;
|
516 |
} |
517 |
|
518 |
/**
|
519 |
* @see java.awt.geom.PathIterator#currentSegment(double[])
|
520 |
*/
|
521 |
public int currentSegment(double[] coords) { |
522 |
Coordinate[] jtsCoordinates = getJTS().getCoordinates();
|
523 |
coords[0] = jtsCoordinates[index].x;
|
524 |
coords[1] = jtsCoordinates[index].y;
|
525 |
at.transform(coords, 0, coords, 0, 1); |
526 |
|
527 |
if (index == 0) { |
528 |
return PathIterator.SEG_MOVETO; |
529 |
} else {
|
530 |
return PathIterator.SEG_LINETO; |
531 |
} |
532 |
} |
533 |
|
534 |
/*
|
535 |
* (non-Javadoc)
|
536 |
*
|
537 |
* @see java.awt.geom.PathIterator#currentSegment(float[])
|
538 |
*/
|
539 |
public int currentSegment(float[] coords) { |
540 |
Coordinate[] jtsCoordinates = getJTS().getCoordinates();
|
541 |
coords[0] = (float)jtsCoordinates[index].x; |
542 |
coords[1] = (float)jtsCoordinates[index].y; |
543 |
at.transform(coords, 0, coords, 0, 1); |
544 |
|
545 |
if (index == 0) { |
546 |
return PathIterator.SEG_MOVETO; |
547 |
} else {
|
548 |
return PathIterator.SEG_LINETO; |
549 |
} |
550 |
} |
551 |
} |
552 |
|
553 |
|
554 |
/*
|
555 |
* (non-Javadoc)
|
556 |
*
|
557 |
* @see org.gvsig.fmap.geom.jts.GeometryJTS#is3D()
|
558 |
*/
|
559 |
public boolean is3D() { |
560 |
return anyVertex.is3D();
|
561 |
} |
562 |
|
563 |
|
564 |
/* (non-Javadoc)
|
565 |
* @see org.gvsig.fmap.geom.jts.GeometryJTS#flip()
|
566 |
*/
|
567 |
public void flip() throws GeometryOperationNotSupportedException, GeometryOperationException { |
568 |
Collections.reverse(coordinates);
|
569 |
} |
570 |
|
571 |
} |