//绕this点把point点旋转angle弧度到新的位置
public void Rotate(ref CDblPoint point, double angle)
{
double detX = point.x - x;
double detY = point.y - y;
double cosAngle = Math.Cos(angle);
double sinAngle = Math.Sin(angle);
double detX2 = detX * cosAngle - detY * sinAngle;
double detY2 = detX * sinAngle + detY * cosAngle;
point.x = x + detX2;
point.y = y + detY2;
}
public void SetPoint(CDblPoint Point)
{
x = Point.x;
y = Point.y;
}
public CDblPoint(CDblPoint Point)
{
x = Point.x;
y = Point.y;
}