////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
private Crossings GetCrossings(int xlo, int ylo,
int xhi, int yhi)
{
Crossings cross = new Crossings.EvenOdd(xlo, ylo, xhi, yhi);
int lastx = Xpoints[NumOfPoints - 1];
int lasty = Ypoints[NumOfPoints - 1];
int curx, cury;
// Walk the edges of the polygon
for (int i = 0; i < NumOfPoints; i++)
{
curx = Xpoints[i];
cury = Ypoints[i];
if (cross.AccumulateLine(lastx, lasty, curx, cury))
{
return(null);
}
lastx = curx;
lasty = cury;
}
return(cross);
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
private Crossings GetCrossings(int xlo, int ylo,
int xhi, int yhi)
{
Crossings cross = new Crossings.EvenOdd(xlo, ylo, xhi, yhi);
int lastx = Xpoints[NumOfNpoints - 1];
int lasty = Ypoints[NumOfNpoints - 1];
int curx, cury;
// Walk the edges of the polygon
for (int i = 0; i < NumOfNpoints; i++)
{
curx = Xpoints[i];
cury = Ypoints[i];
if (cross.AccumulateLine(lastx, lasty, curx, cury))
{
return null;
}
lastx = curx;
lasty = cury;
}
return cross;
}
