/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For more information, contact:
*
* Vivid Solutions
* Suite #1A
* 2328 Government Street
* Victoria BC V8T 5G5
* Canada
*
* (250)385-6040
* www.vividsolutions.com
*/
package com.revolsys.geometry.test.function;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import com.revolsys.geometry.model.Geometry;
import com.revolsys.geometry.model.GeometryFactory;
import com.revolsys.geometry.model.LineCap;
import com.revolsys.geometry.model.LineJoin;
import com.revolsys.geometry.model.LineString;
import com.revolsys.geometry.noding.SegmentString;
import com.revolsys.geometry.operation.buffer.BufferInputLineSimplifier;
import com.revolsys.geometry.operation.buffer.BufferParameters;
import com.revolsys.geometry.operation.buffer.OffsetCurveSetBuilder;
import com.revolsys.geometry.operation.buffer.validate.BufferResultValidator;
public class BufferFunctions {
public static String bufferDescription = "Buffers a geometry by a distance";
public static Geometry buffer(final Geometry g, final double distance) {
return g.buffer(distance);
}
public static Geometry bufferCurve(final Geometry g, final double distance) {
return buildCurveSet(g, distance, new BufferParameters());
}
public static Geometry bufferCurveWithParams(final Geometry g, final Double distance,
final Integer quadrantSegments, final Integer capStyle, final Integer joinStyle,
final Double mitreLimit) {
double dist = 0;
if (distance != null) {
dist = distance.doubleValue();
}
final BufferParameters bufParams = new BufferParameters();
if (quadrantSegments != null) {
bufParams.setQuadrantSegments(quadrantSegments.intValue());
}
if (capStyle != null) {
bufParams.setEndCapStyle(LineCap.fromGeometryValue(capStyle));
}
if (joinStyle != null) {
bufParams.setJoinStyle(LineJoin.fromGeometryValue(joinStyle));
}
if (mitreLimit != null) {
bufParams.setMitreLimit(mitreLimit.doubleValue());
}
return buildCurveSet(g, dist, bufParams);
}
public static Geometry bufferEach(final Geometry g, final double distance) {
return g.applyGeometry((part) -> {
return part.buffer(distance);
});
}
public static Geometry bufferLineSimplifier(final Geometry g, final double distance) {
return buildBufferLineSimplifiedSet(g, distance);
}
public static Geometry bufferValidated(final Geometry g, final double distance) {
final Geometry buf = g.buffer(distance);
final String errMsg = BufferResultValidator.isValidMsg(g, distance, buf);
if (errMsg != null) {
throw new IllegalStateException("Buffer Validation error: " + errMsg);
}
return buf;
}
public static Geometry bufferValidatedGeom(final Geometry g, final double distance) {
final Geometry buf = g.buffer(distance);
final BufferResultValidator validator = new BufferResultValidator(g, distance, buf);
final boolean isValid = validator.isValid();
return validator.getErrorIndicator();
}
public static Geometry bufferWithParams(final Geometry g, final Double distance,
final Integer quadrantSegments, final Integer capStyle, final Integer joinStyle,
final Double mitreLimit) {
double dist = 0;
if (distance != null) {
dist = distance.doubleValue();
}
final BufferParameters bufParams = new BufferParameters();
if (quadrantSegments != null) {
bufParams.setQuadrantSegments(quadrantSegments.intValue());
}
if (capStyle != null) {
bufParams.setEndCapStyle(LineCap.fromGeometryValue(capStyle));
}
if (joinStyle != null) {
bufParams.setJoinStyle(LineJoin.fromGeometryValue(joinStyle));
}
if (mitreLimit != null) {
bufParams.setMitreLimit(mitreLimit.doubleValue());
}
return g.buffer(dist, bufParams);
}
private static Geometry buildBufferLineSimplifiedSet(final Geometry geometry,
final double distance) {
final List<LineString> simpLines = new ArrayList<>();
final List<LineString> lines = geometry.getGeometryComponents(LineString.class);
for (final LineString line : lines) {
simpLines.add(geometry.getGeometryFactory()
.lineString(BufferInputLineSimplifier.simplify(line, distance)));
}
final Geometry simpGeom = geometry.getGeometryFactory().buildGeometry(simpLines);
return simpGeom;
}
private static Geometry buildCurveSet(final Geometry geometry, final double dist,
final BufferParameters bufParams) {
// --- now construct curve
final GeometryFactory precisionModel = geometry.getGeometryFactory();
final OffsetCurveSetBuilder curveBuilder = new OffsetCurveSetBuilder(geometry, dist,
precisionModel, bufParams);
final List curves = curveBuilder.getCurves();
final List<LineString> lines = new ArrayList<>();
for (final Iterator i = curves.iterator(); i.hasNext();) {
final SegmentString ss = (SegmentString)i.next();
final LineString points = ss.getPoints();
lines.add(geometry.getGeometryFactory().lineString(points));
}
final Geometry curve = geometry.getGeometryFactory().geometry(lines);
return curve;
}
public static Geometry singleSidedBuffer(final Geometry geom, final double distance) {
final BufferParameters bufParams = new BufferParameters();
bufParams.setSingleSided(true);
return geom.buffer(distance, bufParams);
}
}