public void Set(float xMin, float yMin, float xMax, float yMax)
{
OffsetEffect oe = m_Effects[0] as OffsetEffect;
oe.xMin = xMin;
oe.yMin = yMin;
oe.xMax = xMax;
oe.yMax = yMax;
}
protected override void Init()
{
m_Effects[0] = new OffsetEffect();
}