//$HeadURL$
/*---------------- FILE HEADER ------------------------------------------
This file is part of deegree.
Copyright (C) 2001-2008 by:
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
53177 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.igeo.views.swing.digitize;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Stroke;
import java.util.ArrayList;
import java.util.Iterator;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;
import org.deegree.framework.util.GeometryUtils;
import org.deegree.graphics.transformation.GeoTransform;
import org.deegree.igeo.ApplicationContainer;
import org.deegree.igeo.settings.SnappingToleranceOpt;
import org.deegree.igeo.views.GeoDrawingPane;
import org.deegree.model.feature.Feature;
import org.deegree.model.spatialschema.Curve;
import org.deegree.model.spatialschema.Geometry;
import org.deegree.model.spatialschema.GeometryException;
import org.deegree.model.spatialschema.GeometryFactory;
import org.deegree.model.spatialschema.MultiCurve;
import org.deegree.model.spatialschema.MultiSurface;
import org.deegree.model.spatialschema.Point;
import org.deegree.model.spatialschema.Position;
import org.deegree.model.spatialschema.Ring;
import org.deegree.model.spatialschema.Surface;
import org.deegree.model.spatialschema.SurfaceBoundary;
/**
*
*
* @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
* @author last edited by: $Author$
*
* @version. $Revision$, $Date$
*/
public class MoveVertexDrawingPane extends GeoDrawingPane {
private static final ILogger LOG = LoggerFactory.getLogger( MoveVertexDrawingPane.class );
protected BasicStroke stroke = new BasicStroke( 4 );
protected int targetSize = 0;
protected int halfTargetSize = 0;
protected double tolerance;
protected Position[] neighbors = null;
protected Color drawColor = new Color( 0f, 1f, 0.5f, 0.8f );
protected enum LINES {first, second, both};
protected LINES lines = LINES.both;
/**
*
*
*/
public MoveVertexDrawingPane( ApplicationContainer<?> appContainer ) {
super( appContainer );
SnappingToleranceOpt opt = appContainer.getSettings().getSnappingToleranceOptions();
// TODO
// consider geometric value instead of pixel value
targetSize = (int) opt.getValue();
halfTargetSize = targetSize / 2;
}
/**
*
* @param curve
* @param sourcePoint
* @return
* @throws GeometryException
*/
private Position[] handleCurve( Curve curve, Point sourcePoint ) {
Position[] positions = null;
try {
positions = curve.getAsLineString().getPositions();
} catch ( GeometryException e ) {
LOG.logWarning( "ignore", e );
}
if ( positions[0].equals( sourcePoint.getPosition() ) ) {
lines = LINES.first;
} else if ( positions[positions.length-1].equals( sourcePoint.getPosition() )) {
lines = LINES.second;
}
return findNearest( positions, sourcePoint );
}
/**
*
* @param geom
* @param sourcePoint
* @return
*/
private Position[] handleSurface( Surface geom, Point sourcePoint ) {
SurfaceBoundary sb = geom.getSurfaceBoundary();
Ring[] inner = sb.getInteriorRings();
Position[][] positions = new Position[inner.length + 1][];
positions[0] = sb.getExteriorRing().getPositions();
for ( int i = 1; i < positions.length; i++ ) {
positions[i] = inner[i - 1].getPositions();
}
return findNearest( positions, sourcePoint );
}
/**
*
* @param positions
* @param sourcePoint
* @return
*/
protected Position[] findNearest( Position[][] positions, Point sourcePoint ) {
double tolerance = sourcePoint.getTolerance();
double dist = Double.MAX_VALUE;
int outIndex = 0;
int index = 0;
for ( int i = 0; i < positions.length; i++ ) {
for ( int j = 0; j < positions[i].length; j++ ) {
double tmp = GeometryUtils.distance( sourcePoint.getPosition(), positions[i][j] );
if ( tmp < dist && tmp <= tolerance ) {
dist = tmp;
index = j;
outIndex = i;
}
}
}
if ( index == 0 || positions[outIndex].length == index + 1 ) {
return new Position[] { positions[outIndex][1], positions[outIndex][positions[outIndex].length - 2] };
}
return new Position[] { positions[outIndex][index - 1], positions[outIndex][index + 1] };
}
/**
*
* @param positions
* @param sourcePoint
* @return
*/
protected Position[] findNearest( Position[] positions, Point sourcePoint ) {
double tolerance = sourcePoint.getTolerance();
double dist = Double.MAX_VALUE;
int index = 0;
for ( int i = 0; i < positions.length; i++ ) {
double tmp = GeometryUtils.distance( sourcePoint.getPosition(), positions[i] );
if ( tmp < dist && tmp <= tolerance ) {
dist = tmp;
index = i;
}
}
if ( index == 0 || positions.length == index + 1 ) {
return new Position[] { positions[1], positions[positions.length - 2] };
}
return new Position[] { positions[index - 1], positions[index + 1] };
}
/*
* (non-Javadoc)
*
* @see org.deegree.igeo.views.DrawingPane#draw(int, int, java.awt.Graphics)
*/
public void draw( int x, int y, Graphics g ) {
GeoTransform gt = mapModel.getToTargetDeviceTransformation();
if ( snapper != null ) {
java.awt.Point p = new java.awt.Point( x, y );
p = snapper.snap( p );
double xx = gt.getSourceX( p.x );
double yy = gt.getSourceY( p.y );
Point pp = GeometryFactory.createPoint( xx, yy, mapModel.getCoordinateSystem() );
if ( !pp.equals( points.get( 0 ) ) ) {
x = p.x;
y = p.y;
}
}
this.currentX = x;
this.currentY = y;
g.setColor( drawColor );
Stroke temp = ( (Graphics2D) g ).getStroke();
( (Graphics2D) g ).setStroke( stroke );
g.drawOval( x - halfTargetSize, y - halfTargetSize, targetSize, targetSize );
if ( neighbors != null ) {
// draw preview of new line segments
int x1 = (int) gt.getDestX( neighbors[0].getX() );
int y1 = (int) gt.getDestY( neighbors[0].getY() );
int x2 = (int) gt.getDestX( neighbors[1].getX() );
int y2 = (int) gt.getDestY( neighbors[1].getY() );
if ( lines == LINES.first || lines == LINES.both ) {
g.drawLine( x1, y1, x, y );
}
if ( lines == LINES.second || lines == LINES.both ) {
g.drawLine( x2, y2, x, y );
}
}
( (Graphics2D) g ).setStroke( temp );
}
/*
* (non-Javadoc)
*
* @see org.deegree.igeo.views.DrawingPane#draw(int, int)
*/
public void draw( int x, int y ) {
if ( snapper != null ) {
java.awt.Point p = new java.awt.Point( x, y );
p = snapper.snap( p );
GeoTransform gt = mapModel.getToTargetDeviceTransformation();
double xx = gt.getSourceX( p.x );
double yy = gt.getSourceY( p.y );
Point pp = GeometryFactory.createPoint( xx, yy, mapModel.getCoordinateSystem() );
if ( !pp.equals( points.get( 0 ) ) ) {
x = p.x;
y = p.y;
}
}
this.currentX = x;
this.currentY = y;
}
/*
* (non-Javadoc)
*
* @see org.deegree.igeo.views.DrawingPane#setGraphicContext(java.awt.Graphics)
*/
public void setGraphicContext( Graphics g ) {
this.g = g;
}
/*
* (non-Javadoc)
*
* @see org.deegree.igeo.views.DrawingPane#startDrawing(int, int)
*/
public void startDrawing( int x, int y ) {
isDrawing = true;
points = new ArrayList<Point>();
GeoTransform gt = mapModel.getToTargetDeviceTransformation();
Position pos = null;
if ( snapper != null ) {
snapper.initSnapInfoList();
java.awt.Point p = new java.awt.Point( x, y );
pos = snapper.snapPos( p );
x = (int) gt.getDestX( pos.getX() );
y = (int) gt.getDestY( pos.getY() );
} else {
double dx = gt.getSourceX( x );
double dy = gt.getSourceY( y );
pos = GeometryFactory.createPosition( dx, dy );
}
Point p = GeometryFactory.createPoint( pos, mapModel.getCoordinateSystem() );
// set tolerance to defined value to find vertices to be moved
tolerance = Math.abs( gt.getSourceX( 0 ) - gt.getSourceX( targetSize ) ) / 2d;
p.setTolerance( tolerance );
points.add( p );
points.add( p );
this.draw( x, y );
stopped = false;
// find neighbor vertices of vertex to be moved to enable update of connecting line segments
// while moving
Iterator<Feature> iter = fc.iterator();
while ( iter.hasNext() ) {
Feature feature = iter.next();
//QualifiedName geomProperty = CommandHelper.findGeomProperty( feature );
Geometry geom = (Geometry) feature.getDefaultGeometryPropertyValue();
if ( geom instanceof Curve ) {
neighbors = handleCurve( (Curve) geom, p );
} else if ( geom instanceof Surface ) {
neighbors = handleSurface( (Surface) geom, p );
} else if ( geom instanceof MultiCurve ) {
// TODO
// neighbors = handleMultiCurve( (MultiCurve) geom, p );
LOG.logWarning( "MultiCurves are not supported yet" );
} else if ( geom instanceof MultiSurface ) {
// TODO
// neighbors = handleMultiSurface( (MultiSurface) geom, p );
LOG.logWarning( "MultiSurfaces are not supported yet" );
}
}
}
/*
* (non-Javadoc)
*
* @see org.deegree.igeo.views.DrawingPane#stopDrawing(int, int)
*/
public void stopDrawing( int x, int y ) {
GeoTransform gt = mapModel.getToTargetDeviceTransformation();
double xx = gt.getSourceX( x );
double yy = gt.getSourceY( y );
Position p = GeometryFactory.createPosition( xx, yy );
if ( snapper != null ) {
p = snapper.snap( p );
}
Point point = GeometryFactory.createPoint( p, mapModel.getCoordinateSystem() );
// set tolerance to defined value to find vertices to be moved
point.setTolerance( tolerance );
points.set( 1, point );
stopped = true;
}
}