{

m_nWeight = 1.0;

m_nHeight = 1.0;

m_nCalcAngle = 0.0;;

{

Point _poRet;

double _nLen = sqrt(m_nWeight * m_nWeight + m_nWeight * m_nWeight);

double _nCalcAngle = m_nCalcAngle - PI * 0.25;

_poRet.m_nX = m_poLeftUp.m_nX + _nLen * cos(_nCalcAngle);

// at this

// we normally set logic coordinate

// as x axis's left is x+,y axis's up is y+

// but in screen coordinate,

// x axis's left is x+,y axis's down is y+

// we process at there,

// but not certain whether this is the good place to do this.

// ---

// the right place todo this

// shoule be the point when all geometry have tranformed

// at that point,we can add a tranform to solve

// the logical and screen coordinate's difference

// fix me

_poRet.m_nY = m_poLeftUp.m_nY + (_nLen * sin(_nCalcAngle));

return _poRet;

{

Polyline _nPolyline;

Point _po1 = m_poLeftUp;

Point _po2 = GetRightBottom();

Point _po3 = Point(_po1.GetX(), _po2.GetY());

Point _po4 = Point(_po2.GetX(), _po1.GetY());

_nPolyline.Add(_po1);

_nPolyline.Add(_po3);

_nPolyline.Add(_po2);

_nPolyline.Add(_po4);

return _nPolyline;

{

Point _po1 = m_poLeftUp;

return QRectF(

_po1.toQPointF(),

GetRightBottom().toQPointF());