////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Subdivides the quadratic curve specified by the <code>src</code>
* parameter and stores the resulting two subdivided curves into the
* <code>left</code> and <code>right</code> curve parameters.
* Either or both of the <code>left</code> and <code>right</code>
* objects can be the same as the <code>src</code> object or
* <code>null</code>.
* @param src the quadratic curve to be subdivided
* @param left the <code>QuadCurve</code> object for storing the
* left or first half of the subdivided curve
* @param right the <code>QuadCurve</code> object for storing the
* right or second half of the subdivided curve
*/
public static void Subdivide(QuadCurve src,
QuadCurve left,
QuadCurve right)
{
double x1 = src.GetX1();
double y1 = src.GetY1();
double ctrlx = src.GetCtrlX();
double ctrly = src.GetCtrlY();
double x2 = src.GetX2();
double y2 = src.GetY2();
double ctrlx1 = (x1 + ctrlx) / 2.0;
double ctrly1 = (y1 + ctrly) / 2.0;
double ctrlx2 = (x2 + ctrlx) / 2.0;
double ctrly2 = (y2 + ctrly) / 2.0;
ctrlx = (ctrlx1 + ctrlx2) / 2.0;
ctrly = (ctrly1 + ctrly2) / 2.0;
if (left != null)
{
left.SetCurve(x1, y1, ctrlx1, ctrly1, ctrlx, ctrly);
}
if (right != null)
{
right.SetCurve(ctrlx, ctrly, ctrlx2, ctrly2, x2, y2);
}
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Sets the location of the end points and control point of this
* <code>QuadCurve</code> to the same as those in the specified
* <code>QuadCurve</code>.
* @param c the specified <code>QuadCurve</code>
*/
public void SetCurve(QuadCurve c)
{
SetCurve(c.GetX1(), c.GetY1(),
c.GetCtrlX(), c.GetCtrlY(),
c.GetX2(), c.GetY2());
}