gvSIG projects pool

package org.gvsig.lidar.prov;

public class ConversionUtils {

    private static final int RED_MASK = 255 << 16;

    private static final int GREEN_MASK = 255 << 8;

    private static final int BLUE_MASK = 255;

    /**

     * GPS time as GPS timestamp = LAS  GPS adjusted time + 1000000000

     * GPS time as Unix timestamp = GPS time as GPS timestamp + 315964800

     * UTC time as Unix timestamp = GPS time as Unix timestamp + leap seconds

     * As leap seconds depend on the actual date being converted, we'll ignore them

     * Therefore, we'll use the following constant

     * UNIX TIME = LAS GPS adjusted time + LAS_TIME_TO_UNIX_TIME,

     * where LAS_TIME_TO_UNIX_TIME = 1000000000 + 315964800 = 1315964800

     */

    final public static long LAS_TIME_TO_UNIX_TIME = 1315964800;

    /**

     * Converts red, green and blue values to a RGB int as defined

     * by java.awt.Color(int) constructor.

     * 

     */

    public static int rgbToInt(int red, int green, int blue) {

            return (red << 16) | (green << 8) | blue;

    }

    /**

     * Converts a RGB int as defined by java.awt.Color(int) constructor

     * to separate red, green and blue values

     * 

     * @returns an array containing the red, green and blue values

     */

    public static int[] intToRgb(int rgb) {

            int[] rgbArray = new int[3];

            rgbArray[0] = (rgb & RED_MASK) >> 16;

        rgbArray[1] = (rgb & GREEN_MASK) >> 8;

            rgbArray[2] = rgb & BLUE_MASK;

            return rgbArray;

    }

}