CM-MERGE:OB13.5.5-8 into 14.1.2
Former-commit-id: 8d67230c49c6a7a1aa9a1f94996de8b6c0c01470
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Brian.Dyke
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f8ed9c7944
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b29db01a59
3 changed files with 47 additions and 14 deletions
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@ -48,9 +48,7 @@ import com.raytheon.uf.viz.core.exception.VizException;
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import com.raytheon.viz.warngen.gui.WarngenLayer;
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import com.raytheon.viz.warngen.util.Abbreviation;
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import com.vividsolutions.jts.geom.Geometry;
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import com.vividsolutions.jts.geom.PrecisionModel;
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import com.vividsolutions.jts.geom.prep.PreparedGeometry;
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import com.vividsolutions.jts.precision.SimpleGeometryPrecisionReducer;
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/**
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* Area
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@ -77,7 +75,7 @@ import com.vividsolutions.jts.precision.SimpleGeometryPrecisionReducer;
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* May 2, 2013 1963 jsanchez Updated method to determine partOfArea.
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* Aug 19, 2013 2177 jsanchez Used portionsUtil to calculate area portion descriptions.
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* Apr 29, 2014 3033 jsanchez Updated method to retrieve files in localization.
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* May 16, 2014 DR 17365 D. Friedman Reduce warning area precision to avoid topology errors.
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* May 16, 2014 DR 17365 D. Friedman Reduce precision of warning area to avoid topology errors.
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* </pre>
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*
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* @author chammack
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@ -87,8 +85,6 @@ public class Area {
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private static final transient IUFStatusHandler statusHandler = UFStatus
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.getHandler(Area.class);
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private static final double REDUCED_PRECISION_SCALE = 1000000000.0;
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/**
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* If an area greater than this percentage of the area is covered, no
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* direction is included
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@ -297,16 +293,14 @@ public class Area {
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WarngenLayer warngenLayer) throws VizException {
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Map<String, Object> areasMap = new HashMap<String, Object>();
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Geometry simplifiedArea = null;
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try {
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simplifiedArea = (new SimpleGeometryPrecisionReducer(new PrecisionModel(
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REDUCED_PRECISION_SCALE))).reduce(warnArea);
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Geometry precisionReducedArea = PolygonUtil.reducePrecision(warnArea);
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if (precisionReducedArea.isValid()) {
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warnArea = precisionReducedArea;
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}
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} catch (Exception e) {
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// ignore
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}
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if (simplifiedArea != null && simplifiedArea.isValid()) {
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warnArea = simplifiedArea;
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}
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String hatchedAreaSource = config.getHatchedAreaSource()
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.getAreaSource();
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@ -47,13 +47,16 @@ import com.vividsolutions.jts.geom.Coordinate;
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import com.vividsolutions.jts.geom.CoordinateSequence;
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import com.vividsolutions.jts.geom.Envelope;
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import com.vividsolutions.jts.geom.Geometry;
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import com.vividsolutions.jts.geom.GeometryCollection;
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import com.vividsolutions.jts.geom.GeometryFactory;
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import com.vividsolutions.jts.geom.LineSegment;
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import com.vividsolutions.jts.geom.LinearRing;
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import com.vividsolutions.jts.geom.Point;
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import com.vividsolutions.jts.geom.Polygon;
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import com.vividsolutions.jts.geom.PrecisionModel;
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import com.vividsolutions.jts.geom.prep.PreparedGeometry;
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import com.vividsolutions.jts.geom.prep.PreparedGeometryFactory;
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import com.vividsolutions.jts.precision.SimpleGeometryPrecisionReducer;
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/**
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* Utility for polygon operations
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@ -81,6 +84,7 @@ import com.vividsolutions.jts.geom.prep.PreparedGeometryFactory;
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* 10/18/2013 DR 16632 Qinglu Lin Catch exception thrown when coords length is less than 4 and doing createLinearRing(coords).
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* 01/09/2014 DR 16974 D. Friedman Improve followup redraw-from-hatched-area polygons.
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* 04/15/2014 DR 17247 D. Friedman Prevent some invalid coordinates in adjustVertex.
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* 05/16/2014 DR 17365 D. Friedman Prevent some Coordinate reuse. Add reducePrecision.
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* </pre>
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*
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* @author mschenke
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@ -99,6 +103,8 @@ public class PolygonUtil {
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private MathTransform latLonToContour, contourToLatLon;
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private static final PrecisionModel REDUCED_PRECISION = new PrecisionModel(10000000000.0);
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public PolygonUtil(WarngenLayer layer, int nx, int ny, int maxVertices,
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IExtent localExtent, MathTransform localToLatLon) throws Exception {
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this.layer = layer;
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@ -127,9 +133,15 @@ public class PolygonUtil {
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* hatched area. If it does, that intersection can be used instead of
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* generating a new contour.
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*/
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if (oldWarningPolygon != null) {
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if (oldWarningPolygon != null && oldWarningPolygon.isValid()
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&& origPolygon.isValid()) {
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try {
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Geometry intersection = origPolygon.intersection(oldWarningPolygon);
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/*
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* Create a clone to ensure we do not use a Coordinate from
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* oldWarningPolygon.
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*/
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Geometry intersection = (Geometry) origPolygon
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.intersection(oldWarningPolygon).clone();
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if (intersection instanceof Polygon) {
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Polygon polygonIntersection = (Polygon) intersection;
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if (polygonIntersection.isValid() &&
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@ -1657,4 +1669,27 @@ public class PolygonUtil {
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}
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return slope;
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}
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/** Creates a copy of a Geometry with reduced precision to reduce the chance of topology errors when used
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* in intersection operations.
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*
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* @param g
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* @return a new Geometry that is a copy of given Geometry with reduced
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* precision. References to user data are copied. If there are GeometryCollection
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* objects, user data is copied for each element.
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*/
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static public Geometry reducePrecision(Geometry g) {
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Geometry result;
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if (g instanceof GeometryCollection) {
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Geometry[] list = new Geometry[g.getNumGeometries()];
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for (int i = 0; i < list.length; ++i) {
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list[i] = reducePrecision(g.getGeometryN(i));
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}
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GeometryFactory gf = new GeometryFactory();
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result = gf.createGeometryCollection(list);
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} else
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result = SimpleGeometryPrecisionReducer.reduce(g, REDUCED_PRECISION);
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result.setUserData(g.getUserData());
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return result;
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}
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}
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@ -196,6 +196,7 @@ import com.vividsolutions.jts.io.WKTReader;
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* 01/09/2014 DR 16974 D. Friedman Improve followup redraw-from-hatched-area polygons.
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* 04/15/2014 DR 17247 D. Friedman Rework error handling in AreaHatcher.
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* 04/28,2014 3033 jsanchez Properly handled back up configuration (*.xml) files. Set backupSite to null when backup site is not selected.
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* 05/16/2014 DR 17365 D. Friedman Check if moved vertex results in polygon valid in both lat/lon and local coordinates.
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* </pre>
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*
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* @author mschenke
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@ -2734,7 +2735,10 @@ public class WarngenLayer extends AbstractStormTrackResource {
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}
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if (!intersectFlag) {
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state.setWarningPolygon(gf.createPolygon(ring, null));
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Polygon p = gf.createPolygon(ring, null);
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if (p.isValid() && latLonToLocal(p).isValid()) {
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state.setWarningPolygon(p);
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}
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}
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} catch (Exception e) {
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