Import Debian changes 0.5.0~beta2-1

elki (0.5.0~beta2-1) unstable; urgency=low

  * New upstream beta release.
  * Needs GNU Trove 3, in NEW.
  * Build with OpenJDK7, as OpenJDK6 complains.

elki (0.5.0~beta1-1) unstable; urgency=low

  * New upstream beta release.
  * Needs GNU Trove 3, not yet in Debian (private package)
  * Build with OpenJDK7, as OpenJDK6 complains.

1 files changed, 108 insertions, 0 deletions

diff --git a/src/de/lmu/ifi/dbs/elki/visualization/visualizers/scatterplot/AbstractScatterplotVisualization.java b/src/de/lmu/ifi/dbs/elki/visualization/visualizers/scatterplot/AbstractScatterplotVisualization.java
new file mode 100644
index 00000000..cce9ea5d
--- /dev/null
+++ b/src/de/lmu/ifi/dbs/elki/visualization/visualizers/scatterplot/AbstractScatterplotVisualization.java
@@ -0,0 +1,108 @@
+package de.lmu.ifi.dbs.elki.visualization.visualizers.scatterplot;
+
+/*
+ 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 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.relation.Relation;
+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.visualization.VisualizationTask;
+import de.lmu.ifi.dbs.elki.visualization.projections.CanvasSize;
+import de.lmu.ifi.dbs.elki.visualization.projections.Projection2D;
+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;
+import de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisualization;
+
+/**
+ * Default class to handle 2D projected visualizations.
+ * 
+ * @author Erich Schubert
+ * 
+ * @apiviz.landmark
+ * @apiviz.has Projection2D
+ */
+public abstract class AbstractScatterplotVisualization extends AbstractVisualization {
+  /**
+   * The current projection
+   */
+  final protected Projection2D proj;
+
+  /**
+   * The representation we visualize
+   */
+  final protected Relation<? extends NumberVector<?, ?>> rel;
+
+  /**
+   * The DBID sample
+   */
+  final protected SamplingResult sample;
+
+  /**
+   * Constructor.
+   * 
+   * @param task Visualization task
+   */
+  public AbstractScatterplotVisualization(VisualizationTask task) {
+    super(task);
+    this.proj = task.getProj();
+    this.rel = task.getRelation();
+    this.sample = ResultUtil.getSamplingResult(rel);
+    final double margin = context.getStyleLibrary().getSize(StyleLibrary.MARGIN);
+    this.layer = setupCanvas(svgp, proj, margin, task.getWidth(), task.getHeight());
+  }
+
+  /**
+   * Utility function to setup a canvas element for the visualization.
+   * 
+   * @param svgp Plot element
+   * @param proj Projection to use
+   * @param margin Margin to use
+   * @param width Width
+   * @param height Height
+   * @return wrapper element with appropriate view box.
+   */
+  public static Element setupCanvas(SVGPlot svgp, Projection2D proj, double margin, double width, double height) {
+    final CanvasSize canvas = proj.estimateViewport();
+    final double sizex = canvas.getDiffX();
+    final double sizey = canvas.getDiffY();
+    String transform = SVGUtil.makeMarginTransform(width, height, sizex, sizey, margin) + " translate(" + SVGUtil.fmt(sizex / 2) + " " + SVGUtil.fmt(sizey / 2) + ")";
+
+    final Element layer = SVGUtil.svgElement(svgp.getDocument(), SVGConstants.SVG_G_TAG);
+    SVGUtil.setAtt(layer, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, transform);
+    return layer;
+  }
+  
+  @Override
+  public void resultChanged(Result current) {
+    super.resultChanged(current);
+    if(current == proj) {
+      synchronizedRedraw();
+    }
+  }
+}
\ No newline at end of file