Java Utililty Methods Color Create

List of utility methods to do Color Create

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Description

The list of methods to do Color Create are organized into topic(s).

Method

intcolorFromRGB(int r, int g, int b)
color From RGB 
return (r * 65536) + (g * 256) + b;
intcolorFromRGB(int red, int green, int blue)
color From RGB 
int newPixel = 0;
int alpha = 1;
newPixel += alpha;
newPixel = newPixel << 8;
newPixel += red;
newPixel = newPixel << 8;
newPixel += green;
newPixel = newPixel << 8;
...
intcolorFromRGBA(int red, int green, int blue, int alpha)
Convert R, G, B, Alpha to standard 8 bit 
int newPixel = 0;
newPixel += alpha;
newPixel = newPixel << 8;
newPixel += red;
newPixel = newPixel << 8;
newPixel += green;
newPixel = newPixel << 8;
newPixel += blue;
...
intcolorFromString(String string)
Gets the color as int value from the given String . 
if (string == null || string.length() == 0) {
    return 0x000000ff;
String padded = "";
if (string.length() == 6) {
    padded = string + "ff";
} else if (string.length() > 8) {
    padded = string.substring(0, 8);
...
intcolorWithARGB(int alpha, int red, int green, int blue)
color With ARGB 
return (alpha << 24) | (red << 16) | (green << 8) | blue;
intcolorWithIntAndAlpha(int color, int alpha)
color With Int And Alpha 
return (color & 0xffffff) | (alpha << 24);
ImagegenerateBlankImage(int w, int h, Color col)
generate Blank Image 
BufferedImage img = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = (Graphics2D) img.getGraphics();
g2.setBackground(col);
g2.clearRect(0, 0, w, h);
return img;
ColorgenerateColor(int fc, int bc)
generate Color 
Random random = new Random();
if (fc > 255)
    fc = 255;
if (bc > 255)
    bc = 255;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
...
intgenerateColorFromString(String seed)
generate Color From String 
Random rand = new Random(seed.hashCode());
int red = rand.nextInt(256);
int green = rand.nextInt(256);
int blue = rand.nextInt(256);
return new Color(red, green, blue).getRGB();
ColorModelgenerateColorModel()
generate Color Model 
byte[] r = new byte[255];
byte[] g = new byte[255];
byte[] b = new byte[255];
for (int i = 0; i < 255; i++) {
    r[i] = (byte) ((i * 26) % 250);
    g[i] = (byte) ((i * 2) % 250);
    b[i] = (byte) ((i * 35) % 250);
return new IndexColorModel(8, 255, r, g, b);