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package de.lmu.ifi.dbs.elki.visualization.visualizers.parallel.selection;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2011
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import java.util.ArrayList;
import org.apache.batik.util.SVGConstants;
import org.w3c.dom.Element;
import de.lmu.ifi.dbs.elki.data.NumberVector;
import de.lmu.ifi.dbs.elki.database.datastore.DataStoreListener;
import de.lmu.ifi.dbs.elki.database.ids.DBID;
import de.lmu.ifi.dbs.elki.database.ids.DBIDs;
import de.lmu.ifi.dbs.elki.result.DBIDSelection;
import de.lmu.ifi.dbs.elki.result.HierarchicalResult;
import de.lmu.ifi.dbs.elki.result.Result;
import de.lmu.ifi.dbs.elki.result.ResultUtil;
import de.lmu.ifi.dbs.elki.result.SelectionResult;
import de.lmu.ifi.dbs.elki.utilities.iterator.IterableIterator;
import de.lmu.ifi.dbs.elki.visualization.VisualizationTask;
import de.lmu.ifi.dbs.elki.visualization.css.CSSClass;
import de.lmu.ifi.dbs.elki.visualization.projector.ParallelPlotProjector;
import de.lmu.ifi.dbs.elki.visualization.style.StyleLibrary;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGPath;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGPlot;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGUtil;
import de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisFactory;
import de.lmu.ifi.dbs.elki.visualization.visualizers.Visualization;
import de.lmu.ifi.dbs.elki.visualization.visualizers.parallel.AbstractParallelVisualization;
import de.lmu.ifi.dbs.elki.visualization.visualizers.thumbs.ThumbnailVisualization;
/**
* Visualizer for generating SVG-Elements representing the selected objects
*
* @author Robert Rödler
*
* @apiviz.has SelectionResult oneway - - visualizes
*/
public class SelectionLineVisualization extends AbstractParallelVisualization<NumberVector<?, ?>> implements DataStoreListener {
/**
* A short name characterizing this Visualizer.
*/
private static final String NAME = "Selection Line";
/**
* CSS Class for the range marker
*/
public static final String MARKER = "SelectionLine";
/**
* Constructor.
*
* @param task Visualization task
*/
public SelectionLineVisualization(VisualizationTask task) {
super(task);
addCSSClasses(svgp);
context.addDataStoreListener(this);
context.addResultListener(this);
incrementalRedraw();
}
@Override
public void destroy() {
context.removeDataStoreListener(this);
context.removeResultListener(this);
super.destroy();
}
@Override
protected void redraw() {
DBIDSelection selContext = context.getSelection();
if(selContext != null) {
DBIDs selection = selContext.getSelectedIds();
for(DBID objId : selection) {
double[] yPos = proj.fastProjectDataToRenderSpace(relation.get(objId));
SVGPath path = new SVGPath();
for(int i = 0; i < proj.getVisibleDimensions(); i++) {
path.drawTo(getVisibleAxisX(i), yPos[i]);
}
Element marker = path.makeElement(svgp);
SVGUtil.addCSSClass(marker, MARKER);
layer.appendChild(marker);
}
}
}
/**
* Adds the required CSS-Classes
*
* @param svgp SVG-Plot
*/
private void addCSSClasses(SVGPlot svgp) {
final StyleLibrary style = context.getStyleLibrary();
// Class for the cube
if(!svgp.getCSSClassManager().contains(MARKER)) {
CSSClass cls = new CSSClass(this, MARKER);
cls.setStatement(SVGConstants.CSS_STROKE_VALUE, style.getColor(StyleLibrary.SELECTION));
cls.setStatement(SVGConstants.CSS_STROKE_OPACITY_PROPERTY, style.getOpacity(StyleLibrary.SELECTION));
cls.setStatement(SVGConstants.CSS_STROKE_WIDTH_PROPERTY, style.getLineWidth(StyleLibrary.PLOT) * 2.);
cls.setStatement(SVGConstants.CSS_STROKE_LINECAP_PROPERTY, SVGConstants.CSS_ROUND_VALUE);
cls.setStatement(SVGConstants.CSS_STROKE_LINEJOIN_PROPERTY, SVGConstants.CSS_ROUND_VALUE);
cls.setStatement(SVGConstants.CSS_FILL_PROPERTY, SVGConstants.CSS_NONE_VALUE);
svgp.addCSSClassOrLogError(cls);
}
}
/**
* Factory for visualizers to generate an SVG-Element containing a cube as
* marker representing the selected range for each dimension
*
* @author Robert Rödler
*
* @apiviz.stereotype factory
*/
public static class Factory extends AbstractVisFactory {
/**
* Constructor.
*/
public Factory() {
super();
thumbmask |= ThumbnailVisualization.ON_DATA | ThumbnailVisualization.ON_SELECTION;
}
@Override
public Visualization makeVisualization(VisualizationTask task) {
return new SelectionLineVisualization(task);
}
@Override
public void processNewResult(HierarchicalResult baseResult, Result result) {
final ArrayList<SelectionResult> selectionResults = ResultUtil.filterResults(result, SelectionResult.class);
for(SelectionResult selres : selectionResults) {
IterableIterator<ParallelPlotProjector<?>> ps = ResultUtil.filteredResults(baseResult, ParallelPlotProjector.class);
for(ParallelPlotProjector<?> p : ps) {
final VisualizationTask task = new VisualizationTask(NAME, selres, p.getRelation(), this);
task.put(VisualizationTask.META_LEVEL, VisualizationTask.LEVEL_DATA -1);
baseResult.getHierarchy().add(selres, task);
baseResult.getHierarchy().add(p, task);
}
}
}
}
}
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