de.fhg.igd.iva.colormaps.impl.WainerAndFrancolini.java Source code

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Here is the source code for de.fhg.igd.iva.colormaps.impl.WainerAndFrancolini.java

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/*
 * Copyright 2014 Fraunhofer IGD
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.fhg.igd.iva.colormaps.impl;

import java.awt.Color;
import java.math.RoundingMode;
import java.util.Collections;
import java.util.List;

import com.google.common.math.DoubleMath;

import de.fhg.igd.iva.colormaps.AbstractKnownColormap;
import de.fhg.igd.iva.colormaps.ColorSpace;

public class WainerAndFrancolini extends AbstractKnownColormap {

    private FourCornersAnchorColorMapParameterizable[][] colorMaps;

    @Override
    public Color getColor(double x, double y) {

        if (colorMaps == null)
            initializeColorMap();

        checkRanges(x, y);

        double df = 1 / 3.0;

        int indexX = DoubleMath.roundToInt(x / df, RoundingMode.FLOOR);
        int indexY = DoubleMath.roundToInt(y / df, RoundingMode.FLOOR);
        double fx = 3.0 * (x % df);
        double fy = 3.0 * (y % df);

        // explicitly test for this corner cases -> rounding errors
        if (x == 1.0) {
            indexX = 2;
            fx = 1.0;
        }

        if (y == 1.0) {
            indexY = 2;
            fy = 1.0;
        }

        return colorMaps[indexX][indexY].getColor(fx, fy);
    }

    @Override
    public String getName() {
        return "Wainer and Francolini";
    }

    @Override
    public String getDescription() {
        return "RGB colormap with 4x4 discrete color anchors. The colors in the corners are: Red, Blue, Green, and Yellow.";
    }

    @Override
    public ColorSpace getColorSpace() {
        return ColorSpace.sRGB;
    }

    private void initializeColorMap() {

        Color nullnull = new Color(43, 68, 143);
        Color nulleins = new Color(87, 62, 129);
        Color nullzwo = new Color(124, 58, 125);
        Color nulldrei = new Color(216, 60, 28);

        Color einsnull = new Color(40, 83, 153);
        Color einseins = new Color(80, 89, 156);
        Color einszwo = new Color(127, 88, 147);
        Color einsdrei = new Color(222, 110, 10);

        Color zwonull = new Color(31, 102, 164);
        Color zwoeins = new Color(77, 110, 170);
        Color zwozwo = new Color(126, 121, 172);
        Color zwodrei = new Color(228, 149, 9);

        Color dreinull = new Color(24, 128, 41);
        Color dreieins = new Color(80, 150, 23);
        Color dreizwo = new Color(148, 183, 9);
        Color dreidrei = new Color(251, 233, 0);

        colorMaps = new FourCornersAnchorColorMapParameterizable[3][3];

        colorMaps[0][0] = new FourCornersAnchorColorMapParameterizable(nullnull, nulleins, einsnull, einseins);
        colorMaps[1][0] = new FourCornersAnchorColorMapParameterizable(nulleins, nullzwo, einseins, einszwo);
        colorMaps[2][0] = new FourCornersAnchorColorMapParameterizable(nullzwo, nulldrei, einszwo, einsdrei);
        colorMaps[0][1] = new FourCornersAnchorColorMapParameterizable(einsnull, einseins, zwonull, zwoeins);
        colorMaps[1][1] = new FourCornersAnchorColorMapParameterizable(einseins, einszwo, zwoeins, zwozwo);
        colorMaps[2][1] = new FourCornersAnchorColorMapParameterizable(einszwo, einsdrei, zwozwo, zwodrei);
        colorMaps[0][2] = new FourCornersAnchorColorMapParameterizable(zwonull, zwoeins, dreinull, dreieins);
        colorMaps[1][2] = new FourCornersAnchorColorMapParameterizable(zwoeins, zwozwo, dreieins, dreizwo);
        colorMaps[2][2] = new FourCornersAnchorColorMapParameterizable(zwozwo, zwodrei, dreizwo, dreidrei);
    }

    @Override
    public List<String> getReferences() {
        return Collections.singletonList("wainer1980empirical");
    }
}