/*! Find a minimal rectangle that encapsulates the polygon. The
rectangle is defined by ptMin and ptMax Point2D objects.
*/
void Polygon2D::GetSurroundingRectangle(
Point2D& ptMin, //!< Result - stores minimal x and y value.
Point2D& ptMax //!< Result . stores maximal x and y value.
) const
{
if(m_vecV.size()) {
VecVertex::const_iterator i=m_vecV.begin();
ptMin = ptMax = *i;
// loop over remaining points
for(i++; i!=m_vecV.end(); i++) {
ptMin.SetX(GetMin(ptMin.GetX(), i->GetX()));
ptMin.SetY(GetMin(ptMin.GetY(), i->GetY()));
ptMax.SetX(GetMax(ptMax.GetX(), i->GetX()));
ptMax.SetY(GetMax(ptMax.GetY(), i->GetY()));
}
}
}
