--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/Calculation3.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,49 @@
+package org.dive4elements.river.artifacts.model;
+
+import org.apache.log4j.Logger;
+
+public class Calculation3
+extends      Calculation
+{
+    private static Logger logger = Logger.getLogger(Calculation3.class);
+
+    protected double    km;
+    protected int    [] days;
+    protected double [] qs;
+
+    public Calculation3() {
+    }
+
+    public Calculation3(double km, int [] days, double [] qs) {
+        this.km   = km;
+        this.days = days;
+        this.qs   = qs;
+    }
+
+    public CalculationResult calculate(WstValueTable wst) {
+
+        double [] ws = wst.interpolateW(km, qs, new double[qs.length], this);
+
+        if (days == null || days.length == 0) {
+            addProblem(km, "cannot.find.ds");
+        }
+
+        if (logger.isDebugEnabled()) {
+            logger.debug("Calculate duration curve data:");
+            logger.debug("    km       : " + km);
+            logger.debug("    num Days : " + (days != null ? days.length : 0));
+            logger.debug("    num Qs   : " + (qs != null ? qs.length : 0));
+            logger.debug("    result Ws: " + (ws != null ? ws.length : 0));
+        }
+
+        WQDay wqday = new WQDay(days, ws, qs);
+
+        if (hasProblems()) {
+            logger.debug("calculation caused "+numProblems()+" problem(s).");
+            wqday.removeNaNs();
+        }
+
+        return new CalculationResult(wqday, this);
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :