Java RGB Color Convert To RGBAtoI(byte r, byte g, byte b, byte a)

Description

RGB Ato I

License

Open Source License

Declaration

public static int RGBAtoI(byte r, byte g, byte b, byte a) 

Method Source Code

//package com.java2s;
/*//from   w w w . jav a 2  s .  c o  m
 * @(#)gl_util.java 0.3 06/11/20
 *
 * jGL 3-D graphics library for Java
 * Copyright (c) 1999-2006 Robin Bing-Yu Chen (robin@ntu.edu.tw)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or any later version. the GNU Lesser
 * General Public License should be included with this distribution
 * in the file LICENSE.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 */

public class Main {
    public static int RGBAtoI(byte r, byte g, byte b, byte a) {
        return (((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | b);
    }

    public static int RGBAtoI(int r, int g, int b, int a) {
        return ((a << 24) | (r << 16) | (g << 8) | b);
    }

    public static int RGBAtoI(float r, float g, float b, float a) {
        return RGBAtoI(FtoI(r), FtoI(g), FtoI(b), FtoI(a));
    }

    public static int FtoI(float x) {
        return (int) (x * 255.0f);
    }
}

Related

1. rgb565ToRGB(short pixel, byte[] rgb)
2. rgb8ToPixel(byte[] nrgb)
3. rgb8ToRgbRBXG(byte[] rgb)
4. rgbaToColor(int r, int g, int b, int a)
5. rgbaToHex(String color)
6. rgbBitfieldToString(int rgb)
7. rgbToBgr(final byte[] pixels)
8. RGBtoBGR(String color)
9. rgbToBlackWhite(int pix, int threshold)