--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/StyledSeriesBuilder.java	Fri Sep 28 12:14:35 2012 +0200
@@ -0,0 +1,189 @@
+package de.intevation.flys.exports;
+
+import org.apache.log4j.Logger;
+
+import org.jfree.data.xy.XYSeries;
+
+import de.intevation.flys.artifacts.model.WKms;
+import de.intevation.flys.artifacts.model.WQKms;
+import de.intevation.flys.artifacts.model.WWQQ;
+
+/**
+ * Helper to create and modify StyledXYSeries.
+ */
+public class StyledSeriesBuilder {
+
+    /**
+     * JFreeChart and the area calculation will fail if we use Double.INFINITY
+     * or Double.MAX_VALUE (probably because these are really used in
+     * calculations). We define and use a more handy value instead.
+     */
+    final static double BIG_DOUBLE_VALUE = 1234567d;
+
+    private static final Logger logger = Logger.getLogger
+        (StyledSeriesBuilder.class);
+
+
+    /**
+     * Trivial, hidden constructor.
+     */
+    private StyledSeriesBuilder() {
+    }
+
+
+    /**
+     * Add points to series.
+     *
+     * @param series Series to add points to.
+     * @param points Points to add to series, points[0] to 1st dim, points[1]
+     *               to 2nd dim.
+     * @param skipNANs if true, skip NAN values in points parameter.
+     */
+    public static void addPoints(XYSeries series, double[][] points, boolean skipNANs) {
+        if (points == null || points.length <= 1) {
+            return;
+        }
+        double [] xPoints = points[0];
+        double [] yPoints = points[1];
+        for (int i = 0; i < xPoints.length; i++) {
+            if (skipNANs &&
+                (Double.isNaN(xPoints[i]) || Double.isNaN(yPoints[i]))) {
+                logger.warn ("Skipping NaN in StyledSeriesBuilder.");
+                continue;
+            }
+            series.add(xPoints[i], yPoints[i], false);
+        }
+    }
+
+
+    /**
+     * Add points to series (km to 1st dim, w to 2nd dim).
+     *
+     * @param series Series to add points to.
+     * @param wkms WKms to add to series.
+     */
+    public static void addPoints(XYSeries series, WKms wkms) {
+        if (wkms == null) {
+            return;
+        }
+
+        int size = wkms.size();
+
+        for (int i = 0; i < size; i++) {
+            series.add(wkms.getKm(i), wkms.getW(i), false);
+        }
+    }
+
+
+    /**
+     * Add points to series (km to 1st dim, q to 2nd dim).
+     *
+     * @param series Series to add points to.
+     * @param wqkms WQKms to add to series.
+     */
+    public static void addPointsKmQ(XYSeries series, WQKms wqkms) {
+        if (wqkms == null) {
+            return;
+        }
+
+        int size = wqkms.size();
+
+        for (int i = 0; i < size; i++) {
+            series.add(wqkms.getKm(i), wqkms.getQ(i), false);
+        }
+    }
+
+
+    /**
+     * Add points to series (km to 1st dim, q to 2nd dim), adding points
+     * to achieve a step-like curve.
+     *
+     * @param series Series to add points to.
+     * @param wqkms WQKms to add to series.
+     */
+    public static void addStepPointsKmQ(XYSeries series, WQKms wqkms) {
+        if (wqkms == null) {
+            return;
+        }
+
+        int size = wqkms.size();
+
+        for (int i = 0; i < size; i++) {
+            if (i==0) {
+                series.add(wqkms.getKm(i), wqkms.getQ(i), false);
+            }
+            else {
+                //Add two points.
+                double halveX = (wqkms.getKm(i-1) + wqkms.getKm(i)) / 2d;
+                series.add(halveX, wqkms.getQ(i-1));
+                series.add(halveX, wqkms.getQ(i));
+            }
+            if (i == size-1) {
+                series.add(wqkms.getKm(i), wqkms.getQ(i), false);
+            }
+        }
+    }
+
+
+    /**
+     * Add points to series (q to 1st dim, w to 2nd dim).
+     *
+     * @param series Series to add points to.
+     * @param wqkms WQKms to add to series.
+     */
+    public static void addPointsQW(XYSeries series, WQKms wqkms) {
+        if (wqkms == null) {
+            return;
+        }
+
+        int size = wqkms.size();
+
+        for (int i = 0; i < size; i++) {
+            series.add(wqkms.getQ(i), wqkms.getW(i));
+        }
+    }
+
+
+    /**
+     * Add points to series (q to 1st dim, w to 2nd dim).
+     *
+     * @param series Series to add points to.
+     * @param wwqq WWQQ to add to series.
+     */
+    public static void addPoints(XYSeries series, WWQQ wwqq) {
+        if (wwqq == null) {
+            return;
+        }
+
+        int size = wwqq.size();
+
+        for (int i = 0; i < size; i++) {
+            series.add(wwqq.getW1(i), wwqq.getW2(i));
+        }
+    }
+
+
+    /**
+     * Create a Series such that an infinitely big area can be filled
+     * between the newly created and the given series.
+     */
+    public static XYSeries createGroundAtInfinity(XYSeries series) {
+        XYSeries ground = new XYSeries(series.getKey() + /** TODO rand + */ "INF");
+        ground.add(series.getMinX(), -BIG_DOUBLE_VALUE);
+        ground.add(series.getMaxX(), -BIG_DOUBLE_VALUE);
+        return ground;
+    }
+
+
+    /**
+     * Create a Series such that an infinitely big area can be filled
+     * between the newly created and the given series.
+     */
+    public static XYSeries createCeilingAtInfinity(XYSeries series) {
+        XYSeries ground = new XYSeries(series.getKey() + /** TODO rand + */ "INF");
+        ground.add(series.getMinX(), BIG_DOUBLE_VALUE);
+        ground.add(series.getMaxX(), BIG_DOUBLE_VALUE);
+        return ground;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :