+void wxGnomePrintDC::makeEllipticalPath(wxCoord x, wxCoord y,
+ wxCoord width, wxCoord height)
+{
+ double r = 4 * (sqrt (2) - 1) / 3;
+ double halfW = 0.5 * width,
+ halfH = 0.5 * height,
+ halfWR = r * halfW,
+ halfHR = r * halfH;
+ wxCoord halfWI = (wxCoord) halfW,
+ halfHI = (wxCoord) halfH;
+
+ gs_lgp->gnome_print_newpath( m_gpc );
+
+ // Approximate an ellipse using four cubic splines, clockwise from 0 deg */
+ gs_lgp->gnome_print_moveto( m_gpc,
+ XLOG2DEV(x + width),
+ YLOG2DEV(y + halfHI) );
+ gs_lgp->gnome_print_curveto( m_gpc,
+ XLOG2DEV(x + width),
+ YLOG2DEV(y + (wxCoord) rint (halfH + halfHR)),
+ XLOG2DEV(x + (wxCoord) rint(halfW + halfWR)),
+ YLOG2DEV(y + height),
+ XLOG2DEV(x + halfWI),
+ YLOG2DEV(y + height) );
+ gs_lgp->gnome_print_curveto( m_gpc,
+ XLOG2DEV(x + (wxCoord) rint(halfW - halfWR)),
+ YLOG2DEV(y + height),
+ XLOG2DEV(x),
+ YLOG2DEV(y + (wxCoord) rint (halfH + halfHR)),
+ XLOG2DEV(x), YLOG2DEV(y+halfHI) );
+ gs_lgp->gnome_print_curveto( m_gpc,
+ XLOG2DEV(x),
+ YLOG2DEV(y + (wxCoord) rint (halfH - halfHR)),
+ XLOG2DEV(x + (wxCoord) rint (halfW - halfWR)),
+ YLOG2DEV(y),
+ XLOG2DEV(x+halfWI), YLOG2DEV(y) );
+ gs_lgp->gnome_print_curveto( m_gpc,
+ XLOG2DEV(x + (wxCoord) rint(halfW + halfWR)),
+ YLOG2DEV(y),
+ XLOG2DEV(x + width),
+ YLOG2DEV(y + (wxCoord) rint(halfH - halfHR)),
+ XLOG2DEV(x + width), YLOG2DEV(y + halfHI) );
+
+ gs_lgp->gnome_print_closepath(m_gpc);
+}
+