/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2011, Open Source Geospatial Foundation (OSGeo)
*
* 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;
* version 2.1 of the License.
*
* 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.
*/
package org.geotools.grid;
import java.util.Collection;
import org.geotools.data.DataUtilities;
import org.geotools.data.collection.ListFeatureCollection;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.geotools.grid.ortholine.OrthoLineBuilder;
import org.geotools.grid.ortholine.OrthoLineDef;
import org.geotools.grid.ortholine.OrthoLineFeatureBuilder;
import org.geotools.referencing.CRS;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
/**
* A utility class to create line grids with basic attributes.
* @author mbedward
* @since 8.0
*
*
*
* @source $URL$
* @version $Id$
*/
public class Lines {
/**
* Creates a grid of ortho-lines. Lines are parallel to the bounding envelope's
* X-axis, Y-axis or both according to the provided line definitions.
*
* @param bounds the bounding envelope
* @param lineDefs one or more ortho-line definitions
* @return the vector grid of lines
*
* @see OrthoLineDef
*/
public static SimpleFeatureSource createOrthoLines(ReferencedEnvelope bounds,
Collection<OrthoLineDef> lineDefs) {
return createOrthoLines(bounds, lineDefs, 0.0);
}
/**
* Creates a grid of ortho-lines. Lines are parallel to the bounding envelope's
* X-axis, Y-axis or both according to the provided line definitions.
* Densified lines (lines strings with additional vertices along their length) can be
* created by setting the value of {@code vertexSpacing} greater than zero; if so, any
* lines more than twice as long as this value will be densified.
*
* @param bounds the bounding envelope
* @param lineDefs one or more ortho-line definitions
* @param vertexSpacing maximum distance between adjacent vertices along a line
* @return the vector grid of lines
*/
public static SimpleFeatureSource createOrthoLines(ReferencedEnvelope bounds,
Collection<OrthoLineDef> lineDefs, double vertexSpacing) {
return createOrthoLines(bounds, lineDefs, vertexSpacing,
new OrthoLineFeatureBuilder(bounds.getCoordinateReferenceSystem()));
}
/**
* Creates a grid of ortho-lines. Lines are parallel to the bounding envelope's
* X-axis, Y-axis or both according to the provided line definitions.
* Line features will be created using the supplied feature builder.
* Densified lines (lines strings with additional vertices along their length) can be
* created by setting the value of {@code vertexSpacing} greater than zero; if so, any
* lines more than twice as long as this value will be densified.
*
* @param bounds the bounding envelope
* @param lineDefs one or more ortho-line definitions
* @param vertexSpacing maximum distance between adjacent vertices along a line
* @param lineFeatureBuilder feature build to create line features
* @return the vector grid of lines
*/
public static SimpleFeatureSource createOrthoLines(ReferencedEnvelope bounds,
Collection<OrthoLineDef> lineDefs,
double vertexSpacing,
GridFeatureBuilder lineFeatureBuilder) {
if (bounds == null || bounds.isEmpty() || bounds.isNull()) {
throw new IllegalArgumentException("The bounds should not be null or empty");
}
if (lineDefs == null || lineDefs.isEmpty()) {
throw new IllegalArgumentException("One or more line controls must be provided");
}
CoordinateReferenceSystem boundsCRS = bounds.getCoordinateReferenceSystem();
CoordinateReferenceSystem builderCRS =
lineFeatureBuilder.getType().getCoordinateReferenceSystem();
if (boundsCRS != null && builderCRS != null &&
!CRS.equalsIgnoreMetadata(boundsCRS, builderCRS)) {
throw new IllegalArgumentException("Different CRS set for bounds and the feature builder");
}
final ListFeatureCollection fc = new ListFeatureCollection(lineFeatureBuilder.getType());
OrthoLineBuilder lineBuilder = new OrthoLineBuilder(bounds);
lineBuilder.buildGrid(lineDefs, lineFeatureBuilder, vertexSpacing, fc);
return DataUtilities.source(fc);
}
}