/*---------------- 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 implementierung of the Polygon
*
* @version 11.6.2001
* @author Andreas Poth
*/
class PolygonImpl extends SurfacePatchImpl implements Polygon, Serializable {
/** Use serialVersionUID for interoperability. */
private final static long serialVersionUID = -1293845886457211088L;
private static final ILogger LOG = LoggerFactory.getLogger( PolygonImpl.class );
private SurfaceBoundary boundary = null;
/**
* Creates a new PolygonImpl object.
*
* @param interpolation
* @param exteriorRing
* @param interiorRings
* @param crs
*
* @throws GeometryException
*/
public PolygonImpl( SurfaceInterpolation interpolation, Position[] exteriorRing,
Position[][] interiorRings, CoordinateSystem crs )
throws GeometryException {
super( interpolation, exteriorRing, interiorRings, crs );
Ring outer = new RingImpl( exteriorRing, crs );
Ring[] inner = null;
if ( interiorRings != null ) {
inner = new Ring[interiorRings.length];
for ( int i = 0; i < inner.length; i++ ) {
inner[i] = new RingImpl( interiorRings[i], crs );
}
}
boundary = new SurfaceBoundaryImpl( outer, inner );
}
/**
* The operation "boundary" shall return the boundary of this
* SurfacePatch represented as a collection of Curves organized
* as a SurfaceBoundary, consisting of Curve instances along the
* boundary of the aggregate Surface, and interior to the Surface
* where SurfacePatches are adjacent.
*
* @uml.property name="boundary"
*/
public SurfaceBoundary getBoundary() {
return boundary;
}
/**
* checks if this curve is completly equal to the submitted geometry
* @param other object to compare to
*/
public boolean equals( Object other ) {
if ( !super.equals( other ) || !( other instanceof PolygonImpl ) ) {
return false;
}
return true;
}
/**
*
*
* @return
*/
public String toString() {
String ret = "SurfacePatch: ";
ret = "interpolation = " + interpolation + "\n";
ret += "exteriorRing = \n";
for ( int i = 0; i < exteriorRing.length; i++ ) {
ret += ( exteriorRing[i] + "\n" );
}
ret += ( "interiorRings = " + interiorRings + "\n" );
ret += ( "envelope = " + envelope + "\n" );
return ret;
}
/**
* returns a shallow copy of the geometry
*/
public Object clone() {
Polygon p = null;
try {
p = new PolygonImpl(
new SurfaceInterpolationImpl( getInterpolation().getValue() ),
getExteriorRing(), getInteriorRings(), this.crs );
} catch ( Exception ex ) {
LOG.logError( "Polygon_Impl.clone: ", ex );
}
return p;
}
/**
* The Boolean valued operation "intersects" shall return TRUE if this Geometry
* intersects another Geometry. Within a Complex, the Primitives do not
* intersect one another. In general, topologically structured data uses shared
* geometric objects to capture intersection information.
*/
public boolean intersects( Geometry gmo ) {
boolean inter = false;
try {
if ( gmo instanceof Point ) {
inter = LinearIntersects.intersects( ( (Point)gmo ).getPosition(), this );
} else if ( gmo instanceof Curve ) {
inter = LinearIntersects.intersects( (Curve)gmo, new SurfaceImpl( this ) );
} else if ( gmo instanceof Surface ) {
inter = LinearIntersects.intersects( (Surface)gmo, new SurfaceImpl( this ) );
} else if ( gmo instanceof Aggregate ) {
inter = intersectsMultiObject( (Aggregate)gmo );
}
} catch ( Exception e ) {
}
return inter;
}
/**
* the operations returns true if the submitted multi primitive intersects
* with the curve segment
*/
private boolean intersectsMultiObject( Aggregate mprim ) throws Exception {
boolean inter = false;
int cnt = mprim.getSize();
for ( int i = 0; i < cnt; i++ ) {
if ( intersects( mprim.getObjectAt( i ) ) ) {
inter = true;
break;
}
}
return inter;
}
/**
* The Boolean valued operation "contains" shall return TRUE if this Geometry
* contains another Geometry.<p></p>
*/
public boolean contains( Geometry gmo ) {
boolean contain = false;
try {
if ( gmo instanceof Point ) {
contain = LinearContains.contains( this, ( (Point)gmo ).getPosition() );
} else if ( gmo instanceof Curve ) {
contain = LinearContains.contains( this, ( (Curve)gmo ).getAsLineString() );
} else if ( gmo instanceof Surface ) {
contain = LinearContains.contains( new SurfaceImpl( this ), (Surface)gmo );
} else if ( gmo instanceof Aggregate ) {
contain = containsMultiObject( (Aggregate)gmo );
}
} catch ( Exception e ) {
LOG.logError( "", e );
}
return contain;
}
/**
*
*
* @param gmo
*
* @return
*/
private boolean containsMultiObject( Aggregate gmo ) {
try {
for ( int i = 0; i < gmo.getSize(); i++ ) {
if ( !contains( gmo.getObjectAt( i ) ) ) {
return false;
}
}
} catch ( Exception e ) {
LOG.logError( "", e );
}
return true;
}
} /* ********************************************************************
Changes to this class. What the people have been up to:
$Log: PolygonImpl.java,v $
Revision 1.9 2006/07/12 14:46:15 poth
comment footer added
********************************************************************** */