/*
* Copyright (c) 2009, Steve Ratcliffe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program 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
* General Public License for more details.
*/
package uk.me.parabola.splitter.solver;
import uk.me.parabola.splitter.AbstractMapProcessor;
import uk.me.parabola.splitter.Area;
import uk.me.parabola.splitter.MapDetails;
import uk.me.parabola.splitter.Node;
import uk.me.parabola.splitter.RoundingUtils;
import uk.me.parabola.splitter.args.SplitterParams;
/**
* Builds up a density map.
*/
class DensityMapCollector
extends AbstractMapProcessor
{
private final DensityMap densityMap
;
private final MapDetails details =
new MapDetails
();
private Area bounds
;
private final boolean ignoreBoundsTags
;
private int files
;
public DensityMapCollector
(SplitterParams mainOptions
) {
Area densityBounds =
new Area(-0x400000, -0x800000, 0x400000, 0x800000
);
densityMap =
new DensityMap
(densityBounds, mainOptions.
getResolution());
this.
ignoreBoundsTags = mainOptions.
getIgnoreOsmBounds();
}
@
Override
public boolean skipTags
() {
return true;
}
@
Override
public boolean skipWays
() {
return true;
}
@
Override
public boolean skipRels
() {
return true;
}
@
Override
public void startFile
() {
if (++files
> 1)
checkBounds
();
}
@
Override
public void boundTag
(Area fileBbox
) {
if (ignoreBoundsTags
)
return;
if (this.
bounds ==
null){
this.
bounds = fileBbox
;
}
else
this.
bounds =
this.
bounds.
add(fileBbox
);
}
@
Override
public void processNode
(Node n
) {
int glat = n.
getMapLat();
int glon = n.
getMapLon();
densityMap.
addNode(glat, glon
);
details.
addToBounds(glat, glon
);
}
/**
* Check if a bounds tag was found. If not,
* use the bbox of the data that was collected so far.
* This is used when multiple input files are used
* and first doesn't contain a bounds tag.
*/
public void checkBounds
(){
if (this.
bounds ==
null)
this.
bounds = getExactArea
();
}
public Area getExactArea
() {
if (bounds
!=
null) {
return bounds
;
}
return details.
getBounds();
}
public void mergeSeaData
(DensityMapCollector seaData,
boolean trim,
int resolution
) {
Area roundedBounds = RoundingUtils.
round(getExactArea
(), resolution
);
densityMap.
mergeSeaData(seaData.
densityMap, roundedBounds, trim
);
}
public void saveMap
(String fileName
) {
if (details.
getBounds() !=
null)
densityMap.
saveMap(fileName, details.
getBounds(), bounds
);
}
public void readMap
(String fileName
) {
bounds = densityMap.
readMap(fileName, details
);
}
public DensityMap getDensityMap
() {
return densityMap
;
}
}