hexagon bitmap image converter.

hexagon bitmap image

private Bitmap getHexagonImage(Bitmap toTransform) {
    Bitmap output = Bitmap.createBitmap(toTransform.getWidth(),
            toTransform.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(output);
 
    int radius = 0;
    int width = toTransform.getWidth();
    int height = toTransform.getHeight();
    int centerX = width / 2;
    int centerY = height / 2;
 
    if (width >= height) {
        radius = height / 2;
    } else {
        radius = width / 2;
    }
 
    Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, toTransform.getWidth(),
            toTransform.getHeight());
 
    Path path = new Path();
    paint.setPathEffect(new CornerPathEffect(10));  //corner 
    for (int i = 0; i < 6; i++) {
 
        int posX = (int) (centerX + radius * Math.cos(Math.toRadians(i * 60 - 30)));
        int posY = (int) (centerY + radius * Math.sin(Math.toRadians(i * 60 - 30)));
        if (i == 0) {
            path.moveTo(posX, posY);
        } else {
            path.lineTo(posX, posY);
        }
    }
 
    path.close();
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(Color.parseColor("#FFFFFF"));
    canvas.drawPath(path, paint);
    paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
    canvas.drawBitmap(toTransform, rect, rect, paint);
 
    return output;
}