private void ClearBitmap()
{
if (locatPlus != null)
{
drawShapeDC.EraseLocatShape(locatPlus.GetLocatShapePoints(), locatPlus.GetPointColors());
}
if (movePlus != null)
{
drawShapeDC.EraseLocatShape(movePlus.GetLocatShapePoints(), movePlus.GetPointColors());
}
drawShapeDC.ClearBitmap();
if (clothClamps != null)
{
for (int i = 0; i < clothClamps.Length; i++)
{
drawShapeDC.DrawRange(clothClamps[i].RangeLinePoints());
drawShapeDC.DrawClothCramp(clothClamps[i].ClothClampRect, clothClamps[i].ClothClampPoint);
}
}
}
