package de.lmu.ifi.dbs.elki.visualization.visualizers.parallel;
/*
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.Iterator;
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.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.SamplingResult;
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.ClassStylingPolicy;
import de.lmu.ifi.dbs.elki.visualization.style.StyleLibrary;
import de.lmu.ifi.dbs.elki.visualization.style.StylingPolicy;
import de.lmu.ifi.dbs.elki.visualization.style.lines.LineStyleLibrary;
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.thumbs.ThumbnailVisualization;
/**
* Generates data lines.
*
* @author Robert Rödler
*/
public class LineVisualization extends AbstractParallelVisualization<NumberVector<?, ?>> implements DataStoreListener {
/**
* Generic tags to indicate the type of element. Used in IDs, CSS-Classes etc.
*/
public static final String DATALINE = "Dataline";
/**
* Sample we visualize.
*/
private SamplingResult sample;
/**
* Constructor.
*
* @param task VisualizationTask
*/
public LineVisualization(VisualizationTask task) {
super(task);
this.sample = ResultUtil.getSamplingResult(relation);
context.addResultListener(this);
context.addDataStoreListener(this);
incrementalRedraw();
}
@Override
public void destroy() {
context.removeDataStoreListener(this);
context.removeResultListener(this);
super.destroy();
}
@Override
public void resultChanged(Result current) {
super.resultChanged(current);
if(current == sample || current == context.getStyleResult()) {
synchronizedRedraw();
}
}
@Override
protected void redraw() {
StylingPolicy sp = context.getStyleResult().getStylingPolicy();
addCSSClasses(svgp, sp);
Iterator<DBID> ids = sample.getSample().iterator();
if(ids == null || !ids.hasNext()) {
ids = relation.iterDBIDs();
}
if(sp instanceof ClassStylingPolicy) {
// FIXME: doesn't use sampling yet.
ClassStylingPolicy csp = (ClassStylingPolicy) sp;
for(int c = csp.getMinStyle(); c < csp.getMaxStyle(); c++) {
String key = DATALINE + "_" + c;
for(Iterator<DBID> iter = csp.iterateClass(c); iter.hasNext();) {
DBID id = iter.next();
SVGPath path = new SVGPath();
double[] yPos = proj.fastProjectDataToRenderSpace(relation.get(id));
for(int i = 0; i < yPos.length; i++) {
path.drawTo(getVisibleAxisX(i), yPos[i]);
}
Element line = path.makeElement(svgp);
SVGUtil.addCSSClass(line, key);
layer.appendChild(line);
}
}
}
else {
while(ids.hasNext()) {
DBID id = ids.next();
SVGPath path = new SVGPath();
double[] yPos = proj.fastProjectDataToRenderSpace(relation.get(id));
for(int i = 0; i < yPos.length; i++) {
path.drawTo(getVisibleAxisX(i), yPos[i]);
}
Element line = path.makeElement(svgp);
SVGUtil.addCSSClass(line, DATALINE);
// assign color
line.setAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE, SVGConstants.CSS_STROKE_PROPERTY + ":" + SVGUtil.colorToString(sp.getColorForDBID(id)));
layer.appendChild(line);
}
}
}
/**
* Adds the required CSS-Classes
*
* @param svgp SVG-Plot
*/
private void addCSSClasses(SVGPlot svgp, StylingPolicy sp) {
final StyleLibrary style = context.getStyleLibrary();
final LineStyleLibrary lines = style.lines();
final double width = .5 * style.getLineWidth(StyleLibrary.PLOT);
if(sp instanceof ClassStylingPolicy) {
ClassStylingPolicy csp = (ClassStylingPolicy) sp;
for(int i = csp.getMinStyle(); i < csp.getMaxStyle(); i++) {
String key = DATALINE + "_" + i;
if(!svgp.getCSSClassManager().contains(key)) {
CSSClass cls = new CSSClass(this, key);
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);
lines.formatCSSClass(cls, i, width);
svgp.addCSSClassOrLogError(cls);
}
}
}
else {
// Class for the distance function
if(!svgp.getCSSClassManager().contains(DATALINE)) {
CSSClass cls = new CSSClass(this, DATALINE);
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);
lines.formatCSSClass(cls, -1, width);
svgp.addCSSClassOrLogError(cls);
}
}
svgp.updateStyleElement();
}
/**
* Factory for axis visualizations
*
* @author Robert Rödler
*
* @apiviz.stereotype factory
* @apiviz.uses LineVisualization oneway - - «create»
*/
public static class Factory extends AbstractVisFactory {
/**
* A short name characterizing this Visualizer.
*/
private static final String NAME = "Data lines";
/**
* Constructor, adhering to
* {@link de.lmu.ifi.dbs.elki.utilities.optionhandling.Parameterizable}
*/
public Factory() {
super();
thumbmask |= ThumbnailVisualization.ON_DATA | ThumbnailVisualization.ON_STYLE;
}
@Override
public Visualization makeVisualization(VisualizationTask task) {
return new LineVisualization(task);
}
@Override
public void processNewResult(HierarchicalResult baseResult, Result result) {
IterableIterator<ParallelPlotProjector<?>> ps = ResultUtil.filteredResults(result, ParallelPlotProjector.class);
for(ParallelPlotProjector<?> p : ps) {
final VisualizationTask task = new VisualizationTask(NAME, p.getRelation(), p.getRelation(), this);
task.put(VisualizationTask.META_LEVEL, VisualizationTask.LEVEL_DATA);
baseResult.getHierarchy().add(p, task);
}
}
}
}