public override void RemoveChildShapeFromCompoundShape(BulletShape shape, BulletShape removeShape)
{
BulletShapeUnman shapeu = shape as BulletShapeUnman;
BulletShapeUnman removeShapeu = removeShape as BulletShapeUnman;
BSAPICPP.RemoveChildShapeFromCompoundShape2(shapeu.ptr, removeShapeu.ptr);
}