////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
internal ArcIterator(Arc a, AffineTransform at)
{
_w = a.GetWidth() / 2.0;
_h = a.GetHeight() / 2.0;
_x = a.GetX() + _w;
_y = a.GetY() + _h;
_angStRad = -MathEx.ToRadians(a.GetAngleStart());
_affine = at;
double ext = -a.GetAngleExtent();
if (ext >= 360.0 || ext <= -360)
{
_arcSegs = 4;
_increment = Math.PI / 2;
// btan(Math.PI / 2);
_cv = 0.5522847498307933;
if (ext < 0)
{
_increment = -_increment;
_cv = -_cv;
}
}
else
{
_arcSegs = (int)MathEx.Ceil(MathEx.Abs(ext) / 90.0);
_increment = MathEx.ToRadians(ext / _arcSegs);
_cv = Btan(_increment);
if (_cv == 0)
{
_arcSegs = 0;
}
}
switch (a.GetArcType())
{
case Arc.OPEN:
_lineSegs = 0;
break;
case Arc.CHORD:
_lineSegs = 1;
break;
case Arc.PIE:
_lineSegs = 2;
break;
}
if (_w < 0 || _h < 0)
{
_arcSegs = _lineSegs = -1;
}
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Sets this arc to be the same as the specified arc.
*
* @param a The <CODE>Arc</CODE> to use to set the arc's values.
*/
public void SetArc(Arc a)
{
SetArc(a.GetX(), a.GetY(), a.GetWidth(), a.GetHeight(),
a.GetAngleStart(), a.GetAngleExtent(), a._type);
}
