--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flood_duration/FloodDurationMainValuesQFacet.java	Fri Jul 13 18:38:05 2018 +0200
@@ -0,0 +1,91 @@
+/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
+ * Software engineering by Intevation GmbH
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+
+package org.dive4elements.river.artifacts.sinfo.flood_duration;
+
+import org.apache.log4j.Logger;
+import org.dive4elements.artifactdatabase.state.DefaultFacet;
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.river.artifacts.D4EArtifact;
+import org.dive4elements.river.artifacts.model.CalculationResult;
+import org.dive4elements.river.artifacts.model.WQDay;
+import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
+import org.dive4elements.river.jfree.StickyAxisAnnotation;
+
+
+/**
+ * Facet to show Main Q Values.
+ */
+public class FloodDurationMainValuesQFacet extends DefaultFacet {
+
+    /** Own log. */
+    private static Logger log = Logger.getLogger(FloodDurationMainValuesQFacet.class);
+
+    /** Trivial Constructor. */
+    public FloodDurationMainValuesQFacet(final String name, final String description) {
+        this.description = description;
+        this.name        = name;
+        this.index       = 0;
+    }
+
+    /**
+     * Set the hit-point in Q where a line drawn from the axis would hit the
+     * curve in WQDay (if hit).
+     * Employ linear interpolation.
+     */
+    protected static void setHitPoint(final WQDay wqday, final StickyAxisAnnotation annotation) {
+
+        final float q = annotation.getPos();
+        final Double day = wqday.interpolateDayByQ(q);
+
+        if (day != null) {
+            annotation.setHitPoint(day.floatValue());
+        }
+        else if (log.isDebugEnabled()) {
+            log.debug("StickyAnnotation does not hit wqday curve: " + q);
+        }
+    }
+
+
+    /**
+     * Returns the data this facet requires.
+     *
+     * @param artifact the owner artifact.
+     * @param context  the CallContext (can be used to find out if in
+     *                 navigable fixation-setting, or durationcurve).
+     *
+     * @return the data.
+     */
+    @Override
+    public Object getData(final Artifact artifact, final CallContext context) {
+
+        log.debug("Get data for flood duration main value Q data");
+
+        final D4EArtifact flys = (D4EArtifact) artifact;
+
+        final CalculationResult res = (CalculationResult) flys.compute(context, ComputeType.ADVANCE, false);
+
+        final FloodDurationCalculationResults data = (FloodDurationCalculationResults) res.getData();
+
+        return data.getMainValueQAnnotation();
+    }
+
+
+    /**
+     * Create a deep copy of this Facet.
+     * @return a deep copy.
+     */
+    @Override
+    public FloodDurationMainValuesQFacet deepCopy() {
+        final FloodDurationMainValuesQFacet copy = new FloodDurationMainValuesQFacet(this.name, this.description);
+        copy.set(this);
+        return copy;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :