private void updateGV() {
final int h = barV.getHeight();
bmpV = updateBitmap(bmpV, h);
bmpBuf = updateBuffer(bmpBuf, h);
hsvTmp.h = hsv.h;
hsvTmp.s = hsv.s;
final double d = (double) (h - 1);
for (int i = 0; i < h; i++) {
hsvTmp.v = (double) i / d;
bmpBuf.put(i, hsvTmp.toRGB(true));
}
bmpV.copyPixelsFromBuffer(bmpBuf);
}
