/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2006 by:
EXSE, Department of Geography, University of Bonn
http://www.giub.uni-bonn.de/deegree/
lat/lon GmbH
http://www.lat-lon.de
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
Contact:
Andreas Poth
lat/lon GmbH
Aennchenstr. 19
53115 Bonn
Germany
E-Mail: poth@lat-lon.de
Prof. Dr. Klaus Greve
Department of Geography
University of Bonn
Meckenheimer Allee 166
53115 Bonn
Germany
E-Mail: greve@giub.uni-bonn.de
---------------------------------------------------------------------------*/
package org.deegree.model.spatialschema;
import java.io.Serializable;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.model.crs.CoordinateSystem;
/**
* default implementation of the MultiCurve interface from
* package jago.model.
*
* ------------------------------------------------------------
* @version 12.6.2001
* @author Andreas Poth
*/
final class MultiCurveImpl extends MultiPrimitiveImpl implements MultiCurve, Serializable {
/** Use serialVersionUID for interoperability. */
private final static long serialVersionUID = 2730942874409216686L;
private static final ILogger LOG = LoggerFactory.getLogger( MultiCurveImpl.class );
/**
* Creates a new MultiCurveImpl object.
*
* @param crs
*/
public MultiCurveImpl( CoordinateSystem crs ) {
super( crs );
}
/**
* Creates a new MultiCurveImpl object.
*
* @param gmc
*/
public MultiCurveImpl( Curve[] gmc ) {
super( gmc[0].getCoordinateSystem() );
for ( int i = 0; i < gmc.length; i++ ) {
aggregate.add( gmc[i] );
}
}
/**
* Creates a new MultiCurveImpl object.
*
* @param gmc
* @param crs
*/
public MultiCurveImpl( Curve[] gmc, CoordinateSystem crs ) {
super( crs );
for ( int i = 0; i < gmc.length; i++ ) {
aggregate.add( gmc[i] );
}
}
/**
* adds a Curve to the aggregation
*/
public void addCurve( Curve gmc ) {
super.add( gmc );
}
/**
* inserts a Curve in the aggregation. all elements with an index
* equal or larger index will be moved. if index is
* larger then getSize() - 1 or smaller then 0 or gmc equals null
* an exception will be thrown.
*
* @param gmc Curve to insert.
* @param index position where to insert the new Curve
*/
public void insertCurveAt( Curve gmc, int index ) throws GeometryException {
super.insertObjectAt( gmc, index );
}
/**
* sets the submitted Curve at the submitted index. the element
* at the position <code>index</code> will be removed. if index is
* larger then getSize() - 1 or smaller then 0 or gmc equals null
* an exception will be thrown.
*
* @param gmc Curve to set.
* @param index position where to set the new Curve
*/
public void setCurveAt( Curve gmc, int index ) throws GeometryException {
setObjectAt( gmc, index );
}
/**
* removes the submitted Curve from the aggregation
*
* @return the removed Curve
*/
public Curve removeCurve( Curve gmc ) {
return (Curve)super.removeObject( gmc );
}
/**
* removes the Curve at the submitted index from the aggregation.
* if index is larger then getSize() - 1 or smaller then 0
* an exception will be thrown.
*
* @return the removed Curve
*/
public Curve removeCurveAt( int index ) throws GeometryException {
return (Curve)super.removeObjectAt( index );
}
/**
* removes all Curve from the aggregation.
*/
public void removeAll() {
super.removeAll();
}
/**
* returns the Curve at the submitted index.
*/
public Curve getCurveAt( int index ) {
return (Curve)super.getPrimitiveAt( index );
}
/**
* returns all Curves as array
*/
public Curve[] getAllCurves() {
return (Curve[])aggregate.toArray( new Curve[getSize()] );
}
/**
* returns true if the submitted Curve is within the aggregation
*/
public boolean isMember( Curve gmc ) {
return super.isMember( gmc );
}
/**
* returns the boundary of the MultiCurve<p>
* not implemented yet
*/
public Boundary getBoundary() {
return null;
}
/**
* calculates the bounding box / envelope of the aggregation
*/
protected void calculateEnvelope() {
Envelope bb = getCurveAt( 0 ).getEnvelope();
double[] min = bb.getMin().getAsArray().clone();
double[] max = bb.getMax().getAsArray().clone();
for ( int i = 1; i < getSize(); i++ ) {
double[] pos1 = getCurveAt( i ).getEnvelope().getMin().getAsArray();
double[] pos2 = getCurveAt( i ).getEnvelope().getMax().getAsArray();
for ( int j = 0; j < pos1.length; j++ ) {
if ( pos1[j] < min[j] ) {
min[j] = pos1[j];
} else if ( pos1[j] > max[j] ) {
max[j] = pos1[j];
}
if ( pos2[j] < min[j] ) {
min[j] = pos2[j];
} else if ( pos2[j] > max[j] ) {
max[j] = pos2[j];
}
}
}
envelope = new EnvelopeImpl( new PositionImpl( min ), new PositionImpl( max ), this.crs );
}
/**
* calculates the centroid of the aggregation
*/
protected void calculateCentroid() {
try {
double cnt = 0;
Point gmp = getCurveAt( 0 ).getCentroid();
double[] cen = new double[gmp.getAsArray().length];
for ( int i = 0; i < getSize(); i++ ) {
cnt += getCurveAt( i ).getNumberOfCurveSegments();
double[] pos = getCurveAt( i ).getCentroid().getAsArray();
for ( int j = 0; j < getCoordinateDimension(); j++ ) {
cen[j] += pos[j];
}
}
for ( int j = 0; j < getCoordinateDimension(); j++ ) {
cen[j] = cen[j] / cnt / getSize();
}
centroid = new PointImpl( new PositionImpl( cen ), null );
} catch ( Exception ex ) {
LOG.logError( "", ex );
}
}
/**
* calculates the centroid and envelope of the aggregation
*/
protected void calculateParam() {
calculateCentroid();
calculateEnvelope();
setValid( true );
}
/**
* The operation "dimension" shall return the inherent dimension of this
* Geometry, which shall be less than or equal to the coordinate dimension.
* The dimension of a collection of geometric objects shall be the largest
* dimension of any of its pieces. Points are 0-dimensional, curves are
* 1-dimensional, surfaces are 2-dimensional, and solids are 3-dimensional.
*/
public int getDimension() {
return 1;
}
/**
* The operation "coordinateDimension" shall return the dimension of the
* coordinates that define this Geometry, which must be the same as the
* coordinate dimension of the coordinate reference system for this Geometry.
*/
public int getCoordinateDimension() {
return getCurveAt( 0 ).getCoordinateDimension();
}
/**
* returns a shallow copy of the geometry
*/
public Object clone() {
MultiCurve mc = null;
try {
mc = new MultiCurveImpl( getCoordinateSystem() );
for ( int i = 0; i < this.getSize(); i++ ) {
CurveImpl ci = (CurveImpl)getCurveAt( i );
mc.addCurve( (Curve)ci.clone() );
}
} catch ( Exception ex ) {
LOG.logError( "MultiCurve_Impl.clone: ", ex );
}
return mc;
}
} /* ********************************************************************
Changes to this class. What the people have been up to:
$Log: MultiCurveImpl.java,v $
Revision 1.9 2006/11/02 10:20:51 mschneider
Fixed null CRS in Envelope creation.
Revision 1.8 2006/07/12 14:46:15 poth
comment footer added
********************************************************************** */