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 / arc / Arc2D.java @ 42267
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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.arc; |
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import java.awt.geom.PathIterator; |
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import com.vividsolutions.jts.geom.Coordinate; |
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import org.gvsig.fmap.geom.Geometry; |
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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.primitive.Point; |
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/**
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* @author fdiaz
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*
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*/
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public class Arc2D extends AbstractArc { |
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/**
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*
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*/
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private static final long serialVersionUID = 3414562338763885954L; |
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/**
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* @param subtype
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*/
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protected Arc2D() { |
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super(Geometry.SUBTYPES.GEOM2D);
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.geom.primitive.Arc#setPoints(org.gvsig.fmap.geom.primitive.Point, double, double, double)
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*/
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public void setPoints(Point center, double radius, double startAngle, double angleExt) { |
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double x;
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double y;
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double w;
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double h;
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double start;
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double extent;
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double angleOffset;
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final double pi2 = Math.PI*2; |
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angleOffset = 0;
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if( angleExt<0 ) { |
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angleOffset = pi2 + angleExt; |
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angleExt = Math.abs(angleExt);
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} |
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x = center.getX() - radius; |
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y = center.getY() - radius; |
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w = radius * 2;
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h = w; // Son siempre arcos de circunferencia
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if( angleExt > 0 && (angleExt % pi2) == 0 ) { |
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start = 0;
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extent = 360;
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} else {
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angleExt = angleExt % pi2; //Asumimos que aqui angleExt es siempre positivo
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startAngle = Math.abs(startAngle) % pi2;
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start = Math.toDegrees( pi2 - startAngle + angleOffset) ;
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extent = - Math.toDegrees(pi2 - angleExt);
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} |
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double angleStart = Math.toRadians(-start); |
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double initX = x + (Math.cos(angleStart) * 0.5 + 0.5) * radius*2; |
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double initY = y + (Math.sin(angleStart) * 0.5 + 0.5) * radius*2; |
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init = new Point2D(initX, initY); |
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double angleEnd = Math.toRadians(-start - extent); |
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double endX = x + (Math.cos(angleEnd) * 0.5 + 0.5) * radius*2; |
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double endY = y + (Math.sin(angleEnd) * 0.5 + 0.5) * radius*2; |
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end = new Point2D(endX, endY); |
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double angleMiddle = Math.toRadians(-start - extent)/2; |
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double middleX = x + (Math.cos(angleMiddle) * 0.5 + 0.5) * radius*2; |
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double middleY = y + (Math.sin(angleMiddle) * 0.5 + 0.5) * radius*2; |
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end = new Point2D(middleX, middleY); |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.geom.primitive.Arc#getCenterPoint()
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*/
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public Point getCenterPoint() { |
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((PointJTS)init).getJTS(); |
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Point2D center = new Point2D(JTSUtils.getCircumcentre(init, middle, end)); |
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return center;
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.geom.Geometry#cloneGeometry()
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*/
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public Geometry cloneGeometry() {
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Arc2D arc2D = new Arc2D(); |
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arc2D.setPoints(init, middle, end); |
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return arc2D;
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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.jts.primitive.curve.line.AbstractLine#fixPoint(org
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* .gvsig.fmap.geom.primitive.Point)
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*/
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@Override
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protected Point fixPoint(Point point) { |
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if (point instanceof Point2D) { |
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return point;
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} else {
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return new Point2D(point.getX(), point.getY()); |
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} |
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} |
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/* (non-Javadoc)
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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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PathIterator pi = getPathIterator(null); |
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ArrayListCoordinateSequence coordinates = new ArrayListCoordinateSequence();
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double coords[] = new double[6]; |
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while (!pi.isDone()) {
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switch (pi.currentSegment(coords)) {
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case PathIterator.SEG_MOVETO: |
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coordinates.add(new Coordinate(coords[0], coords[1])); |
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break;
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case PathIterator.SEG_LINETO: |
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coordinates.add(new Coordinate(coords[0], coords[1])); |
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break;
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case PathIterator.SEG_QUADTO: |
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coordinates.add(new Coordinate(coords[0], coords[1])); |
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coordinates.add(new Coordinate(coords[2], coords[3])); |
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break;
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case PathIterator.SEG_CUBICTO: |
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coordinates.add(new Coordinate(coords[0], coords[1])); |
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coordinates.add(new Coordinate(coords[2], coords[3])); |
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coordinates.add(new Coordinate(coords[4], coords[5])); |
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break;
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case PathIterator.SEG_CLOSE: |
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coordinates.add(coordinates.get(0));
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break;
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} |
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pi.next(); |
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} |
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return JTSUtils.createJTSLinearRing(coordinates);
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} |
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} |