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Diffstat (limited to 'addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/style/marker/PrettyMarkers.java')
| -rwxr-xr-x | addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/style/marker/PrettyMarkers.java | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/style/marker/PrettyMarkers.java b/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/style/marker/PrettyMarkers.java new file mode 100755 index 00000000..be99c6b1 --- /dev/null +++ b/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/style/marker/PrettyMarkers.java @@ -0,0 +1,235 @@ +package de.lmu.ifi.dbs.elki.visualization.style.marker; + +/* + This file is part of ELKI: + Environment for Developing KDD-Applications Supported by Index-Structures + + Copyright (C) 2015 + 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 org.apache.batik.util.SVGConstants; +import org.w3c.dom.Element; + +import de.lmu.ifi.dbs.elki.visualization.colors.ColorLibrary; +import de.lmu.ifi.dbs.elki.visualization.style.StyleLibrary; +import de.lmu.ifi.dbs.elki.visualization.svg.SVGPlot; +import de.lmu.ifi.dbs.elki.visualization.svg.SVGUtil; + +/** + * Marker library achieving a larger number of styles by combining different + * shapes with different colors. Uses object ID management by SVGPlot. + * + * @author Erich Schubert + * + * @apiviz.composedOf ColorLibrary + */ +public class PrettyMarkers implements MarkerLibrary { + /** + * Color library + */ + private ColorLibrary colors; + + /** + * Default prefix to use. + */ + private static final String DEFAULT_PREFIX = "s"; + + /** + * Prefix for the IDs generated. + */ + private String prefix; + + /** + * Color of "uncolored" dots + */ + private String dotcolor; + + /** + * Color of "greyed out" dots + */ + private String greycolor; + + /** + * Constructor + * + * @param prefix prefix to use. + * @param style style library to use + */ + public PrettyMarkers(String prefix, StyleLibrary style) { + this.prefix = prefix; + this.colors = style.getColorSet(StyleLibrary.MARKERPLOT); + this.dotcolor = style.getColor(StyleLibrary.MARKERPLOT); + this.greycolor = style.getColor(StyleLibrary.PLOTGREY); + } + + /** + * Constructor without prefix argument, will use {@link #DEFAULT_PREFIX} as + * prefix. + * + * @param style Style library to use + */ + public PrettyMarkers(StyleLibrary style) { + this(DEFAULT_PREFIX, style); + } + + /** + * Draw an marker used in scatter plots. If you intend to use the markers + * multiple times, you should consider using the {@link #useMarker} method + * instead, which exploits the SVG features of symbol definition and use + * + * @param plot containing plot + * @param parent parent node + * @param x position + * @param y position + * @param style marker style (enumerated) + * @param size size + */ + public void plotMarker(SVGPlot plot, Element parent, double x, double y, int style, double size) { + assert (parent != null); + if (style == -1) { + plotUncolored(plot, parent, x, y, size); + return; + } + if (style == -2) { + plotGray(plot, parent, x, y, size); + return; + } + // TODO: add more styles. + String colorstr = colors.getColor(style); + String strokestyle = SVGConstants.CSS_STROKE_PROPERTY + ":" + colorstr + ";" + SVGConstants.CSS_STROKE_WIDTH_PROPERTY + ":" + SVGUtil.fmt(size / 6); + + switch(style % 8){ + case 0: { + // + cross + Element line1 = plot.svgLine(x, y - size / 2.2, x, y + size / 2.2); + SVGUtil.setStyle(line1, strokestyle); + parent.appendChild(line1); + Element line2 = plot.svgLine(x - size / 2.2, y, x + size / 2.2, y); + SVGUtil.setStyle(line2, strokestyle); + parent.appendChild(line2); + break; + } + case 1: { + // X cross + Element line1 = plot.svgLine(x - size / 2.828427, y - size / 2.828427, x + size / 2.828427, y + size / 2.828427); + SVGUtil.setStyle(line1, strokestyle); + parent.appendChild(line1); + Element line2 = plot.svgLine(x - size / 2.828427, y + size / 2.828427, x + size / 2.828427, y - size / 2.828427); + SVGUtil.setStyle(line2, strokestyle); + parent.appendChild(line2); + break; + } + case 2: { + // O hollow circle + Element circ = plot.svgCircle(x, y, size / 2.2); + SVGUtil.setStyle(circ, "fill: none;" + strokestyle); + parent.appendChild(circ); + break; + } + case 3: { + // [] hollow rectangle + Element rect = plot.svgRect(x - size / 2.4, y - size / 2.4, size / 1.2, size / 1.2); + SVGUtil.setStyle(rect, "fill: none;" + strokestyle); + parent.appendChild(rect); + break; + } + case 4: { + // <> hollow diamond + Element rect = plot.svgRect(x - size / 2.7, y - size / 2.7, size / 1.35, size / 1.35); + SVGUtil.setStyle(rect, "fill: none;" + strokestyle); + SVGUtil.setAtt(rect, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, "rotate(45," + SVGUtil.fmt(x) + "," + SVGUtil.fmt(y) + ")"); + parent.appendChild(rect); + break; + } + case 5: { + // O filled circle + Element circ = plot.svgCircle(x, y, size * .5); + SVGUtil.setStyle(circ, SVGConstants.CSS_FILL_PROPERTY + ":" + colorstr); + parent.appendChild(circ); + break; + } + case 6: { + // [] filled rectangle + Element rect = plot.svgRect(x - size / 2.2, y - size / 2.2, size / 1.1, size / 1.1); + SVGUtil.setStyle(rect, "fill:" + colorstr); + parent.appendChild(rect); + break; + } + case 7: { + // <> filled diamond + Element rect = plot.svgRect(x - size / 2.5, y - size / 2.5, size / 1.25, size / 1.25); + SVGUtil.setStyle(rect, "fill:" + colorstr); + SVGUtil.setAtt(rect, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, "rotate(45," + SVGUtil.fmt(x) + "," + SVGUtil.fmt(y) + ")"); + parent.appendChild(rect); + break; + } + } + } + + /** + * Plot a replacement marker when an object is to be plotted as "disabled", usually gray. + * + * @param plot Plot to draw to + * @param parent Parent element + * @param x X position + * @param y Y position + * @param size Size + */ + protected void plotGray(SVGPlot plot, Element parent, double x, double y, double size) { + Element marker = plot.svgCircle(x, y, size * .5); + SVGUtil.setStyle(marker, SVGConstants.CSS_FILL_PROPERTY + ":" + greycolor); + parent.appendChild(marker); + } + + /** + * Plot a replacement marker when no color is set; usually black + * + * @param plot Plot to draw to + * @param parent Parent element + * @param x X position + * @param y Y position + * @param size Size + */ + protected void plotUncolored(SVGPlot plot, Element parent, double x, double y, double size) { + Element marker = plot.svgCircle(x, y, size * .5); + SVGUtil.setStyle(marker, SVGConstants.CSS_FILL_PROPERTY + ":" + dotcolor); + parent.appendChild(marker); + } + + @Override + public Element useMarker(SVGPlot plot, Element parent, double x, double y, int style, double size) { + String id = prefix + style + "_" + size; + Element existing = plot.getIdElement(id); + if(existing == null) { + Element symbol = plot.svgElement(SVGConstants.SVG_SYMBOL_TAG); + SVGUtil.setAtt(symbol, SVGConstants.SVG_ID_ATTRIBUTE, id); + plotMarker(plot, symbol, 2 * size, 2 * size, style, 2 * size); + plot.getDefs().appendChild(symbol); + plot.putIdElement(id, symbol); + } + Element use = plot.svgElement(SVGConstants.SVG_USE_TAG); + use.setAttributeNS(SVGConstants.XLINK_NAMESPACE_URI, SVGConstants.XLINK_HREF_QNAME, "#" + id); + SVGUtil.setAtt(use, SVGConstants.SVG_X_ATTRIBUTE, x - 2 * size); + SVGUtil.setAtt(use, SVGConstants.SVG_Y_ATTRIBUTE, y - 2 * size); + if(parent != null) { + parent.appendChild(use); + } + return use; + } +}
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