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package de.lmu.ifi.dbs.elki.visualization.visualizers.optics;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
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.List;
import org.apache.batik.util.SVGConstants;
import de.lmu.ifi.dbs.elki.distance.distancevalue.Distance;
import de.lmu.ifi.dbs.elki.result.optics.ClusterOrderEntry;
import de.lmu.ifi.dbs.elki.visualization.VisualizationTask;
import de.lmu.ifi.dbs.elki.visualization.projections.OPTICSProjection;
import de.lmu.ifi.dbs.elki.visualization.style.StyleLibrary;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGUtil;
import de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisualization;
/**
* Abstract base class for OPTICS visualizer
*
* @author Erich Schubert
*
* @apiviz.uses OPTICSProjection
*
* @param <D>
*/
public abstract class AbstractOPTICSVisualization<D extends Distance<D>> extends AbstractVisualization {
/**
* The plot
*/
final protected OPTICSProjection<D> optics;
/**
* Width of plot (in display units)
*/
protected double plotwidth;
/**
* Height of plot (in display units)
*/
protected double plotheight;
/**
* Constructor.
*
* @param task Visualization task.
*/
public AbstractOPTICSVisualization(VisualizationTask task) {
super(task);
this.optics = task.getProj();
}
/**
* Produce a new layer element.
*/
protected void makeLayerElement() {
plotwidth = StyleLibrary.SCALE;
plotheight = StyleLibrary.SCALE / optics.getOPTICSPlot(context).getRatio();
final double margin = context.getStyleResult().getStyleLibrary().getSize(StyleLibrary.MARGIN);
layer = SVGUtil.svgElement(svgp.getDocument(), SVGConstants.SVG_G_TAG);
final String transform = SVGUtil.makeMarginTransform(task.getWidth(), task.getHeight(), plotwidth, plotheight, margin * .5);
SVGUtil.setAtt(layer, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, transform);
}
/**
* Access the raw cluster order
*
* @return Cluster order
*/
protected List<ClusterOrderEntry<D>> getClusterOrder() {
return optics.getResult().getClusterOrder();
}
}
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