svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.geometry / org.gvsig.fmap.geometry.api / src / main / java / org / gvsig / fmap / geom / GeometryUtils.java @ 45308
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 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 3
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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; |
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import java.awt.geom.Point2D; |
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import java.util.List; |
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import java.util.Objects; |
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import org.apache.commons.lang3.StringUtils; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.euclidean.EuclideanLine2D; |
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import org.gvsig.euclidean.EuclideanManager; |
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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.CreateEnvelopeException; |
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import org.gvsig.fmap.geom.exception.CreateGeometryException; |
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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.Arc; |
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import org.gvsig.fmap.geom.primitive.Circle; |
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import org.gvsig.fmap.geom.primitive.Ellipse; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.geom.primitive.Line; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.geom.primitive.Polygon; |
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import org.gvsig.fmap.geom.primitive.Spline; |
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import org.gvsig.fmap.geom.type.GeometryType; |
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import org.gvsig.tools.exception.BaseException; |
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import org.gvsig.tools.util.ToolsUtilLocator; |
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|
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/**
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*
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* @author jjdelcerro
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*/
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@SuppressWarnings("UseSpecificCatch") |
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public class GeometryUtils { |
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private GeometryUtils() {
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} |
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public static GeometryType getGeometryType(int geometryType, int geometrySubType) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.getGeometryType(geometryType, geometrySubType);
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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public static boolean isSubtype(int geomTypeParent, int geomTypeChild) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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return geomManager.isSubtype(geomTypeParent, geomTypeChild);
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} |
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public static boolean canAggregate(int geomTypeParent, int geomTypeChild) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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return geomManager.canAggregate(geomTypeParent, geomTypeChild);
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} |
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public static Envelope createEnvelope(int subType) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createEnvelope(subType);
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} catch (CreateEnvelopeException ex) {
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return null; |
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} |
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} |
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public static Envelope createEnvelope(double minX, double minY, double maxX, |
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double maxY, int subType) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createEnvelope(minX, minY, maxX, maxY, subType);
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} catch (CreateEnvelopeException ex) {
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return null; |
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} |
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} |
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public static Line createLine(int subType) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createLine(subType);
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} catch (CreateGeometryException ex) {
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return null; |
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} |
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} |
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public static MultiLine createMultiLine(int subType) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createMultiLine(subType);
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} catch (CreateGeometryException ex) {
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return null; |
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} |
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} |
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public static Polygon createPolygon(int subType) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createPolygon(subType);
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} catch (CreateGeometryException ex) {
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return null; |
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} |
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} |
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public static MultiPolygon createMultiPolygon(int subType) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createMultiPolygon(subType);
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} catch (CreateGeometryException ex) {
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return null; |
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} |
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} |
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public static Point createPoint(double x, double y) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createPoint(x, y, Geometry.SUBTYPES.GEOM2D);
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} catch (CreateGeometryException ex) {
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return null; |
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} |
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} |
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public static Point createPoint(double x, double y, double z) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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Point p = geomManager.createPoint(x, y, Geometry.SUBTYPES.GEOM3D);
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p.setCoordinateAt(Geometry.DIMENSIONS.Z, z); |
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return p;
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} catch (CreateGeometryException ex) {
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return null; |
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} |
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} |
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public static Point createPoint(double x, double y, double z, double m) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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Point p = geomManager.createPoint(x, y, Geometry.SUBTYPES.GEOM3DM);
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p.setCoordinateAt(Geometry.DIMENSIONS.Z, z); |
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p.setCoordinateAt(p.getDimension()-1, m);
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return p;
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} catch (CreateGeometryException ex) {
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return null; |
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} |
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} |
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public static Point createPoint(Point center, double radius, double angle) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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return GeometryUtils.createPoint(
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center.getX() + radius * Math.cos(angle),
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center.getY() + radius * Math.sin(angle)
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); |
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} |
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public static Geometry createFrom(Object data) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createFrom(data);
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} catch (GeometryException ex) {
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return null; |
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} |
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} |
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public static Geometry createFrom(String wkt, String srs) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createFrom(wkt, srs);
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} catch (GeometryException ex) {
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return null; |
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} |
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} |
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public static Geometry createFrom(String wkt, IProjection srs) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createFrom(wkt, srs);
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} catch (GeometryException ex) {
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return null; |
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} |
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} |
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public static Geometry createFrom(String wkt) { |
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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try {
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return geomManager.createFrom(wkt);
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} catch (GeometryException ex) {
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return null; |
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} |
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} |
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public static Object convertTo(Geometry geom, String format) { |
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try {
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return geom.convertTo(format);
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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public static String toWKT(Geometry geom) { |
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try {
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return geom.convertToWKT();
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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public static byte[] toWKB(Geometry geom) { |
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try {
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return geom.convertToWKB();
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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public static byte[] toEWKB(Geometry geom) { |
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try {
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return geom.convertToEWKB();
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} catch (Exception ex) { |
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return null; |
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} |
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} |
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public static boolean intersects(Geometry geom1, Geometry geom2) { |
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try {
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return geom1.intersects(geom2);
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} catch (Exception ex) { |
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return false; |
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} |
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} |
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public static String getGeometryTypeName(int type) { |
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switch (type) {
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case Geometry.TYPES.GEOMETRY:
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return "Geometry"; |
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case Geometry.TYPES.POINT:
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return "Point"; |
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case Geometry.TYPES.CURVE:
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return "Curve"; |
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case Geometry.TYPES.SURFACE:
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return "Surface"; |
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case Geometry.TYPES.SOLID:
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return "Solid"; |
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case Geometry.TYPES.AGGREGATE:
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return "Aggregate"; |
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case Geometry.TYPES.MULTIPOINT:
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return "Multipoint"; |
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case Geometry.TYPES.MULTICURVE:
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return "Multicurve"; |
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case Geometry.TYPES.MULTISURFACE:
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return "Multisurface"; |
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case Geometry.TYPES.MULTISOLID:
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return "Multisolid"; |
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case Geometry.TYPES.CIRCLE:
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return "Circle"; |
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case Geometry.TYPES.ARC:
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return "Arc"; |
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case Geometry.TYPES.ELLIPSE:
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return "Ellipse"; |
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case Geometry.TYPES.SPLINE:
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return "Spline"; |
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case Geometry.TYPES.ELLIPTICARC:
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return "Ellipticarc"; |
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case Geometry.TYPES.COMPLEX:
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return "Complex"; |
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case Geometry.TYPES.LINE:
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return "Line"; |
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case Geometry.TYPES.POLYGON:
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return "Polygon"; |
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case Geometry.TYPES.RING:
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return "Ring"; |
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case Geometry.TYPES.MULTILINE:
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return "Multiline"; |
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case Geometry.TYPES.MULTIPOLYGON:
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return "Multipolygon"; |
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case Geometry.TYPES.CIRCUMFERENCE:
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return "Circumference"; |
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case Geometry.TYPES.PERIELLIPSE:
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return "Periellipse"; |
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case Geometry.TYPES.FILLEDSPLINE:
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return "Filledspline"; |
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default:
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return "Geometry"; |
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} |
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} |
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public static String getGeometrySubtypeName(int subtype) { |
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switch (subtype) {
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case Geometry.SUBTYPES.GEOM2D:
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return "2D"; |
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case Geometry.SUBTYPES.GEOM3D:
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return "3D"; |
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case Geometry.SUBTYPES.GEOM2DM:
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return "2DM"; |
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case Geometry.SUBTYPES.GEOM3DM:
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return "3DM"; |
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default:
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return "Unknown"; |
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} |
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} |
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public static int getGeometryType(String typeName) { |
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if( StringUtils.isBlank(typeName) ) {
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return Geometry.TYPES.UNKNOWN;
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} |
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switch(typeName.toLowerCase()) {
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case "geometry": |
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return Geometry.TYPES.GEOMETRY;
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case "point": |
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return Geometry.TYPES.POINT;
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case "curve": |
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return Geometry.TYPES.CURVE;
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case "surface": |
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return Geometry.TYPES.SURFACE;
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case "solid": |
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return Geometry.TYPES.SOLID;
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case "aggregate": |
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return Geometry.TYPES.AGGREGATE;
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case "multipoint": |
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return Geometry.TYPES.MULTIPOINT;
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case "multicurve": |
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return Geometry.TYPES.MULTICURVE;
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case "multisurface": |
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return Geometry.TYPES.MULTISURFACE;
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case "multisolid": |
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return Geometry.TYPES.MULTISOLID;
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case "circle": |
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return Geometry.TYPES.CIRCLE;
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case "arc": |
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return Geometry.TYPES.ARC;
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case "ellipse": |
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return Geometry.TYPES.ELLIPSE;
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case "spline": |
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return Geometry.TYPES.SPLINE;
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case "ellipticarc": |
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return Geometry.TYPES.ELLIPTICARC;
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case "complex": |
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return Geometry.TYPES.COMPLEX;
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case "line": |
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return Geometry.TYPES.LINE;
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case "polygon": |
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return Geometry.TYPES.POLYGON;
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case "ring": |
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return Geometry.TYPES.RING;
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case "multiline": |
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return Geometry.TYPES.MULTILINE;
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case "multipolygon": |
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return Geometry.TYPES.MULTIPOLYGON;
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case "circumference": |
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return Geometry.TYPES.CIRCUMFERENCE;
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case "periellipse": |
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return Geometry.TYPES.PERIELLIPSE;
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case "filledspline": |
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return Geometry.TYPES.FILLEDSPLINE;
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default:
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return Geometry.TYPES.UNKNOWN;
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} |
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} |
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|
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public static int getGeometrySubtype(String subtype) { |
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if( StringUtils.isBlank(subtype) ) {
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return Geometry.SUBTYPES.UNKNOWN;
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} |
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switch(subtype.toUpperCase()) {
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case "GEOM2D": |
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case "2D": |
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return Geometry.SUBTYPES.GEOM2D;
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case "GEOM3D": |
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case "3D": |
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return Geometry.SUBTYPES.GEOM3D;
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case "GEOM2DM": |
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case "2DM": |
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return Geometry.SUBTYPES.GEOM2DM;
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case "GEOM3DM": |
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case "3DM": |
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return Geometry.SUBTYPES.GEOM3DM;
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default:
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return Geometry.SUBTYPES.UNKNOWN;
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} |
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} |
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|
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/**
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* Creates a circle as of center and radius.
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*
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* @param center
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* of new circle
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* @param radius
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* of new circle
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* @param subtype
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* subtype of circle. See {@link Geometry.SUBTYPES}
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* @return The circle created with center and radius
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* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
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*/
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public static Circle createCircle(Point center, double radius, int subtype) |
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throws CreateGeometryException {
|
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GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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Circle circle = (Circle) geomManager.create(Geometry.TYPES.CIRCLE, subtype); |
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circle.setPoints(center, radius); |
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|
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return circle;
|
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} |
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|
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/**
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* Creates a circle from three points.
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*
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* @param firstPoint
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* of circle
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* @param secondPoint
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* of circle
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* @param thirdPoint
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* of circle
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* @param subtype
|
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* subtype of circle. See {@link Geometry.SUBTYPES}
|
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* @return The circle created from three points received as parameters.
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* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
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*/
|
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public static Circle createCircle(Point firstPoint, Point secondPoint, |
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Point thirdPoint, int subtype) throws CreateGeometryException { |
| 441 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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Circle circle = (Circle) geomManager.create(Geometry.TYPES.CIRCLE, subtype); |
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circle.setPoints(firstPoint, secondPoint, thirdPoint); |
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|
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return circle;
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} |
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|
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/**
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* Creates a circle from five points.The first two points are two points on a tangent to the circle.The next two are two points on another tangent to the circle.The last one is a point near the center of the circle.
|
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*
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| 451 |
* @param firstPoint
|
| 452 |
* @param secondPoint
|
| 453 |
* @param thirdPoint
|
| 454 |
* @param fourthPoint
|
| 455 |
* @param fifthPoint
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* @param subtype
|
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* subtype of circle. See {@link Geometry.SUBTYPES}
|
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* @return The circle created from three points received as parameters.
|
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* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
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*/
|
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public static Circle createCircle(Point firstPoint, Point secondPoint, Point thirdPoint, Point fourthPoint, Point fifthPoint, int subtype) throws CreateGeometryException { |
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EuclideanManager euclideanManager = ToolsUtilLocator.getEuclideanManager(); |
| 463 |
EuclideanLine2D line1 = euclideanManager.createLine2D(firstPoint.getX(), firstPoint.getY(), secondPoint.getX(), secondPoint.getY()); |
| 464 |
EuclideanLine2D line2 = euclideanManager.createLine2D(thirdPoint.getX(), thirdPoint.getY(), fourthPoint.getX(), fourthPoint.getY()); |
| 465 |
return createCircle(line1, line2, fifthPoint, subtype);
|
| 466 |
} |
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|
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/**
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* Creates a circle from two tangents and one point.
|
| 470 |
*
|
| 471 |
* @param line1
|
| 472 |
* A tangent line
|
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* @param line2
|
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* Another tangent line
|
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* @param point
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* A point near the center of the circle.
|
| 477 |
* @param subtype
|
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* subtype of circle. See {@link Geometry.SUBTYPES}
|
| 479 |
* @return The circle created from two tangents and one point received as parameters.
|
| 480 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 481 |
*/
|
| 482 |
public static Circle createCircle(EuclideanLine2D line1, EuclideanLine2D line2, Point point, int subtype) throws CreateGeometryException { |
| 483 |
|
| 484 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 485 |
EuclideanManager euclideanManager = ToolsUtilLocator.getEuclideanManager(); |
| 486 |
|
| 487 |
try {
|
| 488 |
EuclideanLine2D perpendicular; |
| 489 |
EuclideanLine2D bisector; |
| 490 |
if (line1.isParallel(line2)) {
|
| 491 |
|
| 492 |
if (Objects.equals(line1.getYIntercept(), line2.getYIntercept())
|
| 493 |
|| (Objects.equals(Math.abs(line1.getYIntercept()), 0.0) |
| 494 |
&& Objects.equals(Math.abs(line2.getYIntercept()), 0.0))) { //Same lines |
| 495 |
perpendicular = line1.getPerpendicular(point.getX(), point.getY()); |
| 496 |
Point2D intersection = line1.getIntersection(perpendicular);
|
| 497 |
return createCircle(point, point.distance(geomManager.createPoint(intersection.getX(), intersection.getY(), subtype)), subtype);
|
| 498 |
} else if (Double.isInfinite(line1.getSlope())) { //Parallel and vertical lines |
| 499 |
Point center = createPoint(-(line2.getC() + line1.getC()) / 2.0, point.getY(), subtype); |
| 500 |
double radius = line1.getDistance(center.getX(), center.getY());
|
| 501 |
return createCircle(center, radius, subtype);
|
| 502 |
} else { //Parallel lines |
| 503 |
bisector = euclideanManager.createLine2D(line1.getA(), line1.getB(), (line2.getC()+line1.getC())/2);
|
| 504 |
} |
| 505 |
|
| 506 |
} else {
|
| 507 |
|
| 508 |
EuclideanLine2D[] bisectors = line1.getBisectors(line2);
|
| 509 |
|
| 510 |
double distance1 = bisectors[0].getDistance(point.getX(), point.getY()); |
| 511 |
double distance2 = bisectors[1].getDistance(point.getX(), point.getY()); |
| 512 |
|
| 513 |
bisector = bisectors[0];
|
| 514 |
if (distance1 > distance2) {
|
| 515 |
bisector = bisectors[1];
|
| 516 |
} |
| 517 |
} |
| 518 |
|
| 519 |
if (Double.isInfinite(bisector.getSlope())) { |
| 520 |
Point2D intersection = line1.getIntersection(line2);
|
| 521 |
Point center = createPoint(intersection.getX(), point.getY(), subtype);
|
| 522 |
Double radius = line1.getDistance(center.getX(), center.getY());
|
| 523 |
return createCircle(center, radius, subtype);
|
| 524 |
} else if (bisector.getSlope() == 0.0) { |
| 525 |
if (line1.isParallel(line2)) { //Objects.equals(m0, m1)) { //Same slope |
| 526 |
Point center = createPoint(point.getX(), bisector.getYIntercept(), subtype);
|
| 527 |
Double radius = line1.getDistance(center.getX(), center.getY());
|
| 528 |
return createCircle(center, radius, subtype);
|
| 529 |
} else {
|
| 530 |
Point2D intersection = line1.getIntersection(line2);
|
| 531 |
Point center = createPoint(point.getX(), intersection.getY(), subtype);
|
| 532 |
Double radius = line1.getDistance(center.getX(), center.getY());
|
| 533 |
return createCircle(center, radius, subtype);
|
| 534 |
} |
| 535 |
} |
| 536 |
|
| 537 |
perpendicular = bisector.getPerpendicular(point.getX(), point.getY()); |
| 538 |
Point2D intersection = bisector.getIntersection(perpendicular);
|
| 539 |
Double radius = line1.getDistance(intersection.getX(), intersection.getY());
|
| 540 |
return createCircle(
|
| 541 |
geomManager.createPoint(intersection.getX(), intersection.getY(), subtype), |
| 542 |
radius, |
| 543 |
subtype); |
| 544 |
|
| 545 |
} catch (GeometryOperationNotSupportedException | GeometryOperationException ex) {
|
| 546 |
throw new CreateGeometryException(Geometry.TYPES.CIRCLE, subtype, ex); |
| 547 |
} |
| 548 |
} |
| 549 |
|
| 550 |
/**
|
| 551 |
* Creates a circle from two tangent geometries and the radius.
|
| 552 |
*
|
| 553 |
* @param geometry1
|
| 554 |
* A tangent geometry
|
| 555 |
* @param geometry2
|
| 556 |
* Another tangent geometry
|
| 557 |
* @param radius
|
| 558 |
* the radius of the cicle.
|
| 559 |
* @param firstPoint
|
| 560 |
* a point near tangent point of geometry1
|
| 561 |
* @param secondPoint
|
| 562 |
* a point near tangent point of geometry2
|
| 563 |
* @param subtype
|
| 564 |
* subtype of circle. See {@link Geometry.SUBTYPES}
|
| 565 |
* @return The circle created from two tangent geometries and the radius received as parameters.
|
| 566 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 567 |
*/
|
| 568 |
public static Circle createCircle(Geometry geometry1, Geometry geometry2, double radius, Point firstPoint, Point secondPoint, int subtype) throws CreateGeometryException { |
| 569 |
|
| 570 |
try {
|
| 571 |
Geometry buffer1 = geometry1.buffer(radius); |
| 572 |
MultiLine lines1 = buffer1.toLines(); |
| 573 |
|
| 574 |
Geometry buffer2 = geometry2.buffer(radius); |
| 575 |
MultiLine lines2 = buffer2.toLines(); |
| 576 |
|
| 577 |
Geometry intersection = lines1.intersection(lines2); |
| 578 |
|
| 579 |
Point center = null; |
| 580 |
if(intersection!=null){ |
| 581 |
MultiPoint points = intersection.toPoints(); |
| 582 |
|
| 583 |
double distance = Double.POSITIVE_INFINITY; |
| 584 |
for (int i = 0; i < points.getPrimitivesNumber(); i++) { |
| 585 |
Point point = points.getPointAt(i);
|
| 586 |
double pointDistance = point.distance(firstPoint)+point.distance(secondPoint);
|
| 587 |
if(pointDistance<distance){
|
| 588 |
center = point; |
| 589 |
distance = pointDistance; |
| 590 |
} |
| 591 |
} |
| 592 |
} |
| 593 |
if(center == null){ |
| 594 |
return null; |
| 595 |
} |
| 596 |
return createCircle(center, radius, subtype);
|
| 597 |
|
| 598 |
} catch (GeometryOperationNotSupportedException | GeometryOperationException | GeometryException ex) {
|
| 599 |
throw new CreateGeometryException(Geometry.TYPES.CIRCLE, subtype, ex); |
| 600 |
} |
| 601 |
|
| 602 |
} |
| 603 |
|
| 604 |
/**
|
| 605 |
* Creates an arc as of center, radius, start angle and extension angle.
|
| 606 |
*
|
| 607 |
* @param center
|
| 608 |
* center of arc.
|
| 609 |
* @param radius
|
| 610 |
* of arc.
|
| 611 |
* @param startAngle
|
| 612 |
* of arc in radians
|
| 613 |
* @param angleExt
|
| 614 |
* of arc in radians
|
| 615 |
* @param subtype
|
| 616 |
* subtype of arc. See {@link Geometry.SUBTYPES}
|
| 617 |
* @return The arc created with center, radius, start angle and extension
|
| 618 |
* angle.
|
| 619 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 620 |
*/
|
| 621 |
public static Arc createArc(Point center, double radius, double startAngle, |
| 622 |
double angleExt, int subtype) throws CreateGeometryException { |
| 623 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 624 |
Arc arc = (Arc) geomManager.create(Geometry.TYPES.ARC, subtype); |
| 625 |
arc.setPoints(center, radius, startAngle, angleExt); |
| 626 |
return arc;
|
| 627 |
} |
| 628 |
|
| 629 |
/**
|
| 630 |
* Creates an arc as of three points.
|
| 631 |
*
|
| 632 |
* @param start
|
| 633 |
* point of arc
|
| 634 |
* @param middle
|
| 635 |
* point of arc. It can be any point of arc.
|
| 636 |
* @param end
|
| 637 |
* point of arc
|
| 638 |
* @param subtype
|
| 639 |
* of arc. See {@link Geometry.SUBTYPES}
|
| 640 |
* @return The arc created that it start at start point, cross middle
|
| 641 |
* point and end at end point.
|
| 642 |
* @throws org.gvsig.tools.exception.BaseException
|
| 643 |
*/
|
| 644 |
public static Arc createArc(Point start, Point middle, Point end, int subtype) |
| 645 |
throws BaseException {
|
| 646 |
|
| 647 |
Arc arc = (Arc) GeometryLocator.getGeometryManager().create(Geometry.TYPES.ARC, subtype); |
| 648 |
arc.setPoints(start, middle, end); |
| 649 |
return arc;
|
| 650 |
|
| 651 |
} |
| 652 |
|
| 653 |
/**
|
| 654 |
* Creates an ellipse from start and end point of A axis and half length
|
| 655 |
* of B axis.
|
| 656 |
*
|
| 657 |
* @param firstPointAxisA
|
| 658 |
* first point of A axis
|
| 659 |
* @param secondPointAxisA
|
| 660 |
* second point of B axis
|
| 661 |
* @param halfLengthAxisB
|
| 662 |
* half length of B axis
|
| 663 |
* @param subtype
|
| 664 |
* of ellipse See {@link Geometry.SUBTYPES}
|
| 665 |
* @return The ellipse created
|
| 666 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 667 |
*/
|
| 668 |
public static Arc createEllipse(Point firstPointAxisA, Point secondPointAxisA, |
| 669 |
double halfLengthAxisB, int subtype) throws CreateGeometryException { |
| 670 |
try {
|
| 671 |
double lengthAxisA = secondPointAxisA.distance(firstPointAxisA);
|
| 672 |
|
| 673 |
Point origen = createPoint(0, 0, subtype); |
| 674 |
Arc ellipse = createArc( |
| 675 |
origen, |
| 676 |
lengthAxisA / 2,
|
| 677 |
0,
|
| 678 |
2 * Math.PI, |
| 679 |
subtype); |
| 680 |
|
| 681 |
ellipse.scale(origen, 1, halfLengthAxisB * 2 / lengthAxisA); |
| 682 |
final EuclideanManager euclideanManager = ToolsUtilLocator.getEuclideanManager();
|
| 683 |
EuclideanLine2D axisA = euclideanManager.createLine2D( |
| 684 |
firstPointAxisA.getX(), |
| 685 |
firstPointAxisA.getY(), |
| 686 |
secondPointAxisA.getX(), |
| 687 |
secondPointAxisA.getY()); |
| 688 |
double angle = axisA.getAngle();
|
| 689 |
ellipse.rotate(angle, 0, 0); |
| 690 |
Point centerOfEllipse = getMidPoint(firstPointAxisA, secondPointAxisA, subtype);
|
| 691 |
ellipse.move(centerOfEllipse.getX(), centerOfEllipse.getY()); |
| 692 |
return ellipse;
|
| 693 |
} catch (GeometryOperationNotSupportedException | GeometryOperationException e) {
|
| 694 |
throw new CreateGeometryException(Geometry.TYPES.ARC, subtype, e); |
| 695 |
} |
| 696 |
} |
| 697 |
|
| 698 |
/**
|
| 699 |
* Creates a filled ellipse from start and end point of A axis and half length
|
| 700 |
* of B axis.
|
| 701 |
*
|
| 702 |
* @param firstPointAxisA
|
| 703 |
* first point of A axis
|
| 704 |
* @param secondPointAxisA
|
| 705 |
* second point of B axis
|
| 706 |
* @param halfLengthAxisB
|
| 707 |
* half length of B axis
|
| 708 |
* @param subtype
|
| 709 |
* of ellipse See {@link Geometry.SUBTYPES}
|
| 710 |
* @return The ellipse created
|
| 711 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 712 |
*/
|
| 713 |
public static Ellipse createFilledEllipse(Point firstPointAxisA, |
| 714 |
Point secondPointAxisA, double halfLengthAxisB, int subtype) |
| 715 |
throws CreateGeometryException {
|
| 716 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 717 |
Ellipse ellipse = (Ellipse) geomManager.create(Geometry.TYPES.ELLIPSE, subtype); |
| 718 |
ellipse.setPoints(firstPointAxisA, secondPointAxisA, halfLengthAxisB); |
| 719 |
return ellipse;
|
| 720 |
} |
| 721 |
|
| 722 |
/**
|
| 723 |
* Gets center point of three points.
|
| 724 |
*
|
| 725 |
* @param a
|
| 726 |
* Point one
|
| 727 |
* @param b
|
| 728 |
* Point two
|
| 729 |
* @param c
|
| 730 |
* Point three
|
| 731 |
* @param subtype
|
| 732 |
* of point created. See {@link Geometry.SUBTYPES}
|
| 733 |
* @return Point center.
|
| 734 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 735 |
*/
|
| 736 |
public static Point getCenter(Point a, Point b, Point c, int subtype) |
| 737 |
throws CreateGeometryException {
|
| 738 |
|
| 739 |
EuclideanManager euclideanManager = ToolsUtilLocator.getEuclideanManager(); |
| 740 |
|
| 741 |
Point midPointAC = getMidPoint(a, c, subtype);
|
| 742 |
EuclideanLine2D lineAC = euclideanManager.createLine2D(a.getX(), a.getY(), c.getX(), c.getY()); |
| 743 |
EuclideanLine2D bisectorAC = lineAC.getPerpendicular(midPointAC.getX(), midPointAC.getY()); |
| 744 |
|
| 745 |
Point midPointBC = getMidPoint(b, c, subtype);
|
| 746 |
EuclideanLine2D lineBC = euclideanManager.createLine2D(b.getX(), b.getY(), c.getX(), c.getY()); |
| 747 |
EuclideanLine2D bisectorBC = lineBC.getPerpendicular(midPointBC.getX(), midPointBC.getY()); |
| 748 |
|
| 749 |
Point2D intersection = bisectorAC.getIntersection(bisectorBC);
|
| 750 |
|
| 751 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 752 |
return geomManager.createPoint(intersection.getX(), intersection.getY(), subtype);
|
| 753 |
} |
| 754 |
|
| 755 |
/**
|
| 756 |
* Gets midpoint of two points
|
| 757 |
*
|
| 758 |
* @param a
|
| 759 |
* Point one
|
| 760 |
* @param b
|
| 761 |
* Point two
|
| 762 |
* @param subtype
|
| 763 |
* of point created. See {@link Geometry.SUBTYPES}
|
| 764 |
* @return Mid point of points.
|
| 765 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 766 |
*/
|
| 767 |
public static Point getMidPoint(Point a, Point b, int subtype) |
| 768 |
throws CreateGeometryException {
|
| 769 |
double x = (a.getX() + b.getX()) / 2; |
| 770 |
double y = (a.getY() + b.getY()) / 2; |
| 771 |
return createPoint(x, y, subtype);
|
| 772 |
} |
| 773 |
|
| 774 |
/**
|
| 775 |
* Creates line as of two point coordinates.
|
| 776 |
*
|
| 777 |
* @param x1
|
| 778 |
* The X1 coordinate
|
| 779 |
* @param y1
|
| 780 |
* The y1 coordinate
|
| 781 |
* @param x2
|
| 782 |
* The X2 coordinate
|
| 783 |
* @param y2
|
| 784 |
* The y2 coordinate
|
| 785 |
* @param subtype
|
| 786 |
* of line. See {@link Geometry.SUBTYPES}
|
| 787 |
* @return The Line created.
|
| 788 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 789 |
*/
|
| 790 |
public static Line createLine(double x1, double y1, double x2, double y2, |
| 791 |
int subtype) throws CreateGeometryException { |
| 792 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 793 |
Line line = (Line) geomManager.create(Geometry.TYPES.CURVE, subtype); |
| 794 |
line.addVertex(x1, y1); |
| 795 |
line.addVertex(x2, y2); |
| 796 |
return line;
|
| 797 |
} |
| 798 |
|
| 799 |
/**
|
| 800 |
* Creates line as of two point objects.
|
| 801 |
*
|
| 802 |
* @param p1
|
| 803 |
* First point
|
| 804 |
* @param p2
|
| 805 |
* Second point
|
| 806 |
* @param subtype
|
| 807 |
* of line. See {@link Geometry.SUBTYPES}
|
| 808 |
* @return The Line created.
|
| 809 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 810 |
*/
|
| 811 |
public static Line createLine(Point p1, Point p2, int subtype) |
| 812 |
throws CreateGeometryException {
|
| 813 |
return createLine(p1.getX(), p1.getY(), p2.getX(), p2.getY(),
|
| 814 |
subtype); |
| 815 |
} |
| 816 |
|
| 817 |
/**
|
| 818 |
* Create Spline from point list
|
| 819 |
*
|
| 820 |
* @param points
|
| 821 |
* @param subtype
|
| 822 |
* @return
|
| 823 |
* @throws org.gvsig.fmap.geom.exception.CreateGeometryException
|
| 824 |
*/
|
| 825 |
public static Spline createSpline(List<Point> points, int subtype) |
| 826 |
throws CreateGeometryException {
|
| 827 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 828 |
Spline spline = (Spline) geomManager.create(Geometry.TYPES.SPLINE, subtype); |
| 829 |
|
| 830 |
points.forEach((point) -> {
|
| 831 |
spline.addVertex(point); |
| 832 |
}); |
| 833 |
|
| 834 |
return spline;
|
| 835 |
} |
| 836 |
|
| 837 |
|
| 838 |
/**
|
| 839 |
* Calculate the angle between points p1 and p2 with vertex at vertex point
|
| 840 |
*
|
| 841 |
* @param vertex
|
| 842 |
* @param p1
|
| 843 |
* @param p2
|
| 844 |
* @return
|
| 845 |
*/
|
| 846 |
public static double calculateAngle(Point vertex, Point p1, Point p2){ |
| 847 |
double angle = Math.atan2( |
| 848 |
p2.getY() - vertex.getY(), |
| 849 |
p2.getX() - vertex.getX() |
| 850 |
) - Math.atan2(
|
| 851 |
p1.getY() - vertex.getY(), |
| 852 |
p1.getX() - vertex.getX() |
| 853 |
); |
| 854 |
if (angle<0){ |
| 855 |
return 2*Math.PI+angle; |
| 856 |
} |
| 857 |
return angle;
|
| 858 |
} |
| 859 |
|
| 860 |
/**
|
| 861 |
* Find the angle in the counterclockwise direction between
|
| 862 |
* the horizontal line and point p relative to the vertex
|
| 863 |
*
|
| 864 |
* @param vertex
|
| 865 |
* @param p
|
| 866 |
* @return
|
| 867 |
*/
|
| 868 |
public static double calculateAngle(Point vertex, Point p){ |
| 869 |
|
| 870 |
double angle = Math.atan2( |
| 871 |
p.getY() - vertex.getY(), |
| 872 |
p.getX() - vertex.getX() |
| 873 |
) - Math.atan2(
|
| 874 |
0,
|
| 875 |
1
|
| 876 |
); |
| 877 |
if (angle<0){ |
| 878 |
return 2*Math.PI+angle; |
| 879 |
} |
| 880 |
return angle;
|
| 881 |
} |
| 882 |
|
| 883 |
public static boolean areThreePointsInLine(Point a, Point b, Point c){ |
| 884 |
if(a.equals(b) || a.equals(c) || b.equals(c)){
|
| 885 |
return true; |
| 886 |
} |
| 887 |
return ((b.getX()-a.getX())/(c.getX()-b.getX()) == (b.getY()-a.getY())/(c.getY()-b.getY()));
|
| 888 |
} |
| 889 |
|
| 890 |
} |