/*---------------- 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 CurveBoundary interface from
* package jago.model.
*
* <p>------------------------------------------------------------</p>
* @version 10.6.2001
* @author Andreas Poth
*/
class CurveBoundaryImpl extends PrimitiveBoundaryImpl implements CurveBoundary,
Serializable {
private ILogger LOG = LoggerFactory.getLogger( CurveBoundaryImpl.class );
/** Use serialVersionUID for interoperability. */
private final static long serialVersionUID = 4226497939552424434L;
private Position ep = null;
private Position sp = null;
/**
* constructor of curve_boundary with CS_CoordinateSystem and startpoint and endpoint
*/
public CurveBoundaryImpl( CoordinateSystem crs, Position sp, Position ep ) {
super( crs );
this.sp = sp;
this.ep = ep;
setValid( false );
}
/**
* 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 getStartPoint().getCoordinateDimension();
}
/**
* returns a shallow copy of the geometry
*/
public Object clone() {
CurveBoundary cb = null;
try {
cb = new CurveBoundaryImpl( getCoordinateSystem(), sp, ep );
} catch ( Exception ex ) {
LOG.logError( ex.getMessage(), ex );
}
return cb;
}
/**
* returns the StartPoint of the boundary
*/
public Position getStartPoint() {
return sp;
}
/**
* returns the EndPoint of the boundary
*/
public Position getEndPoint() {
return ep;
}
/**
* 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 CurveBoundaryImpl ) ) {
return false;
}
if ( !ep.equals( ( (CurveBoundary)other ).getEndPoint() ) ||
!sp.equals( ( (CurveBoundary)other ).getStartPoint() ) ) {
return false;
}
return true;
}
/**
* 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;
Point p1 = new PointImpl( sp, crs );
Point p2 = new PointImpl( ep, crs );
try {
if ( gmo instanceof Point ) {
inter = LinearIntersects.intersects( p1, (Point)gmo );
if ( !inter ) {
inter = LinearIntersects.intersects( p2, (Point)gmo );
}
} else if ( gmo instanceof Curve ) {
inter = LinearIntersects.intersects( p1, (Curve)gmo );
if ( !inter ) {
inter = LinearIntersects.intersects( p2, (Curve)gmo );
}
} else if ( gmo instanceof Surface ) {
inter = LinearIntersects.intersects( p1, (Surface)gmo );
if ( !inter ) {
inter = LinearIntersects.intersects( p2, (Surface)gmo );
}
} else if ( gmo instanceof MultiPrimitive ) {
inter = intersectsMultiPrimitive( (MultiPrimitive)gmo );
}
} catch ( Exception e ) {
}
return inter;
}
/**
* the operations returns true if the submitted multi primitive intersects
* with the curve segment
*/
private boolean intersectsMultiPrimitive( MultiPrimitive mprim ) throws Exception {
boolean inter = false;
int cnt = mprim.getSize();
for ( int i = 0; i < cnt; i++ ) {
if ( intersects( mprim.getPrimitiveAt( i ) ) ) {
inter = true;
break;
}
}
return inter;
}
/**
* calculates the envelope of the curve boundary
*/
private void calculateEnvelope() {
double[] min = sp.getAsArray().clone();
double[] max = ep.getAsArray().clone();
for ( int i = 0; i < min.length; i++ ) {
if ( min[i] > max[i] ) {
double d = min[i];
min[i] = max[i];
max[i] = d;
}
}
envelope = new EnvelopeImpl( new PositionImpl( min ), new PositionImpl( max ), this.crs );
}
/**
* calculates the envelope of the curve boundary
*/
protected void calculateParam() {
calculateEnvelope();
setValid( true );
}
/**
*
*
* @return
*/
public String toString() {
return "point1: [" + sp + "] - point2: [" + ep + "]";
}
}/* ********************************************************************
Changes to this class. What the people have been up to:
$Log: CurveBoundaryImpl.java,v $
Revision 1.13 2006/11/02 10:20:51 mschneider
Fixed null CRS in Envelope creation.
Revision 1.12 2006/08/07 09:49:50 poth
never thrown exception removed
Revision 1.11 2006/08/07 09:49:12 poth
unneccessary type cast removed
Revision 1.10 2006/07/12 14:46:15 poth
comment footer added
********************************************************************** */