** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: phantom.cpp,v 1.12 2000/07/28 10:51:31 kevin Exp $
+** $Id: phantom.cpp,v 1.13 2000/07/29 19:50:08 kevin Exp $
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License (version 2) as
Phantom::draw (SGP& sgp) const
{
double wsize = m_xmax - m_xmin;
- double xmin = m_xmin;
- double ymin = m_ymin;
-
if ((m_ymax - m_ymin) > wsize)
wsize = m_ymax - m_ymin;
wsize *= 1.01;
+ double halfWindow = wsize / 2;
+
+ double xcent = m_xmin + (m_xmax - m_xmin) / 2;
+ double ycent = m_ymin + (m_ymax - m_ymin) / 2;
- double xmax = xmin + wsize;
- double ymax = ymin + wsize;
+ sgp.setWindow (xcent - halfWindow, ycent - halfWindow, xcent + halfWindow, ycent + halfWindow);
- sgp.setWindow (xmin, ymin, xmax, ymax);
for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++)
sgp.polylineAbs ((*i)->xOutline(), (*i)->yOutline(), (*i)->nOutlinePoints());
}