view artifacts/src/main/java/org/dive4elements/river/artifacts/model/ZoomScale.java @ 8653:dbec49147f54

(issue1755) Do not create interpolated themes and disable export of non interpolatable data. Due to the fact that data can contain NaN's which will be filtered out before creating the interpolator this requires the actual check for interpolatable data when data is set in the ResultValue
author Andre Heinecke <andre.heinecke@intevation.de>
date Wed, 01 Apr 2015 17:10:03 +0200
parents 421e5cceac84
children 0a5239a1e46e
line wrap: on
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/* 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.model;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;

import org.apache.log4j.Logger;

import org.dive4elements.river.artifacts.math.Linear;


/** Has to do with adaptive smoothing based on current diagram extent. */
public class ZoomScale
{
    private static Logger log = Logger.getLogger(ZoomScale.class);

    private HashMap<String, TreeMap<Double, Double>> rivers;

    public ZoomScale() {
        this.rivers = new HashMap<String, TreeMap<Double, Double>>();
    }

    public ZoomScale(String river) {
        this();
        rivers.put(river, new TreeMap<Double, Double>());
    }

    public double getRadius(String river, double lower, double upper) {
        if (lower > upper) {
            double buf = lower;
            lower = upper;
            upper = buf;
        }
        double range = Math.abs(upper) - Math.abs(lower);
        TreeMap<Double, Double> ranges = rivers.get(river);
        if (ranges == null) {
            TreeMap<Double, Double> defaultRanges = rivers.get("default");
            if (defaultRanges == null) {
                return 0.001;
            }
            ranges = defaultRanges;
        }
        Map.Entry<Double, Double> next = ranges.higherEntry(range);
        Map.Entry<Double, Double> prev = ranges.lowerEntry(range);
        double x0 = 0d;
        double x1 = 0d;
        double y0 = 0d;
        double y1 = 0d;
        if (prev == null && next != null) {
            x1 = next.getKey();
            y1 = next.getValue();
        }
        else if (prev != null && next == null) {
            return prev.getValue();
        }
        else {
            x0 = prev.getKey();
            x1 = next.getKey();
            y0 = prev.getValue();
            y1 = next.getValue();
        }
        return Linear.linear(range, x0, x1, y0, y1);
    }

    public void addRiver(String river) {
        if (!this.rivers.containsKey(river)) {
            this.rivers.put(river, new TreeMap<Double, Double>());
        }
    }

    public Set<String> getRivers() {
        return this.rivers.keySet();
    }

    public void addRange(String river, double range, double radius) {
        if (this.rivers.containsKey(river)) {
            this.rivers.get(river).put(range, radius);
        }
        else {
            this.rivers.put(river, new TreeMap<Double, Double>());
            this.rivers.get(river).put(range, radius);
        }
    }
}

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