org.jtrfp.trcl.file.LTEFile.java Source code

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Here is the source code for org.jtrfp.trcl.file.LTEFile.java

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/*******************************************************************************
 * This file is part of TERMINAL RECALL
 * Copyright (c) 2012-2015 Chuck Ritola
 * Part of the jTRFP.org project
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     chuck - initial API and implementation
 ******************************************************************************/
package org.jtrfp.trcl.file;

import java.awt.Color;

import org.apache.commons.math3.geometry.euclidean.threed.Vector3D;
import org.jtrfp.jfdt.Parser;
import org.jtrfp.jfdt.ThirdPartyParseable;
import org.jtrfp.jfdt.UnrecognizedFormatException;

public class LTEFile implements ThirdPartyParseable {
    private byte[] lteData;

    @Override
    public void describeFormat(Parser parser) throws UnrecognizedFormatException {
        parser.bytesOfCount(4096, parser.property("lteData", byte[].class));
    }//end describeFormat(...)

    /**
     * @return the lteData
     */
    public byte[] getLteData() {
        return lteData;
    }

    /**
     * @param lteData the lteData to set
     */
    public void setLteData(byte[] lteData) {
        this.lteData = lteData;
    }

    public int gradientIndex(int colorIndex, int lightLevel) {
        if (lightLevel < 0 || lightLevel > 15)
            throw new IllegalArgumentException("Lightlevel should be in range [0,15]. Got " + lightLevel);
        if (colorIndex < 0 || colorIndex > 255) {
            throw new IllegalArgumentException("ColorIndex should be in range [0,255]. Got " + colorIndex);
        }
        return lteData[colorIndex * 16 + lightLevel] & 0xFF;
    }//end gradientIndex(...)

    /**
     * Reverse-compatible form of the emissive components in ESTuTv form where:<br>
     * R = E<br>
     * G = S<br>
     * B = Tu<br>
     * A = Tv<br>
     * @return
     * @since Feb 5, 2015
     */
    public Color[] toColors(Color[] referencePalette) {
        Color[] result = new Color[256];
        for (int i = 0; i < 256; i++) {
            final Color rColor = referencePalette[i];
            final Color loColor = referencePalette[gradientIndex(i, 0)];
            final Color hiColor = referencePalette[gradientIndex(i, 15)];
            final double loIntensity = new Vector3D(loColor.getRed(), loColor.getGreen(), loColor.getBlue())
                    .getNorm();
            //Brightest
            final double hiIntensity = new Vector3D(hiColor.getRed(), hiColor.getGreen(), hiColor.getBlue())
                    .getNorm();

            final float[] hsbVals = new float[3];
            Color.RGBtoHSB(rColor.getRed(), rColor.getGreen(), rColor.getBlue(), hsbVals);
            final double saturation = hsbVals[1];
            double dI = Math.pow(1 - (Math.abs(hiIntensity - loIntensity) / 442.), 1);
            //dI = nSaturation*128;
            if (dI > 255)
                dI = 255;
            else if (dI < 0)
                dI = 0;
            result[i] = new Color((int) (dI * saturation * 255.), 0, 0, 0);
        }
        return result;
    }//end toColors()
}//end LTEFile