Example usage for android.graphics ColorMatrix setRotate

Introduction

In this page you can find the example usage for android.graphics ColorMatrix setRotate.

Prototype

public void setRotate(int axis, float degrees) 

Source Link

Document

Set the rotation on a color axis by the specified values.

Usage

From source file:Main.java

public static Bitmap handleImageEffect(Bitmap bm, float hue, float saturation, float lum) {
    Bitmap bmp = Bitmap.createBitmap(bm.getWidth(), bm.getHeight(), Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(bmp);
    Paint paint = new Paint();

    ColorMatrix hueMatrix = new ColorMatrix();
    hueMatrix.setRotate(0, hue);
    hueMatrix.setRotate(1, hue);/*from w  w w  . java  2 s  .  c  o  m*/
    hueMatrix.setRotate(2, hue);

    ColorMatrix saturationMatrix = new ColorMatrix();
    saturationMatrix.setSaturation(saturation);

    ColorMatrix lumMatrix = new ColorMatrix();
    lumMatrix.setScale(lum, lum, lum, 1);

    ColorMatrix imageMatrix = new ColorMatrix();
    imageMatrix.postConcat(hueMatrix);
    imageMatrix.postConcat(saturationMatrix);
    imageMatrix.postConcat(lumMatrix);

    paint.setColorFilter(new ColorMatrixColorFilter(imageMatrix));
    canvas.drawBitmap(bm, 0, 0, paint);
    return bmp;
}

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From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ?/*from   www  .  j  a v  a 2  s  .co  m*/
 * 
 * @param bitmap
 *            
 * @param hueValue
 *            
 * @return ??
 */
public static Bitmap hue(Bitmap bitmap, int hueValue) {
    // ??
    float newHueValue = (hueValue - 127) * 1.0F / 127 * 180;
    // 
    ColorMatrix hueColorMatrix = new ColorMatrix();
    // 
    hueColorMatrix.setRotate(0, newHueValue);
    // 
    hueColorMatrix.setRotate(1, newHueValue);
    // ?
    hueColorMatrix.setRotate(2, newHueValue);
    // 
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(hueColorMatrix));
    // 
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    // 
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return newBitmap;
}

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From source file:com.yk.notification.util.BitmapUtil.java

/**
 * ???/*from ww w . ja va  2 s .c  om*/
 * 
 * @param bitmap
 *            
 * @param lumValue
 *            
 * @param hueValue
 *            
 * @param saturationValue
 *            
 * @return ????
 */
public static Bitmap lumAndHueAndSaturation(Bitmap bitmap, int lumValue, int hueValue, int saturationValue) {
    // ??
    float newSaturationValue = saturationValue * 1.0F / 127;
    // ??
    float newlumValue = lumValue * 1.0F / 127;
    // ??
    float newHueValue = (hueValue - 127) * 1.0F / 127 * 180;

    // 
    ColorMatrix colorMatrix = new ColorMatrix();

    // 
    colorMatrix.setSaturation(newSaturationValue);
    // 
    colorMatrix.setScale(newlumValue, newlumValue, newlumValue, 1);
    // 
    colorMatrix.setRotate(0, newHueValue);
    // 
    colorMatrix.setRotate(1, newHueValue);
    // ?
    colorMatrix.setRotate(2, newHueValue);

    // 
    Paint paint = new Paint();
    paint.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
    // 
    Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(newBitmap);
    // 
    canvas.drawBitmap(bitmap, 0, 0, paint);
    return newBitmap;
}

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