private void adjustAlpha(VisualSample sample, float newAlpha)
{
sample.alpha = newAlpha;
}
private Color getSampleColor(VisualSample sample)
{
return(new Color(r, g, b, sample.alpha));
}
private void relativeAdjustAlpha(VisualSample sample, float newAlpha)
{
sample.alpha += newAlpha;
}