private void AddLineCap(PointFP p1, PointFP p2, int lineCap)
{
if (lineCap == PenFP.LINECAP_BUTT || p1.Equals(p2))
{
return;
}
var dx = p2.X - p1.X;
var dy = p2.Y - p1.Y;
var len = PointFP.Distance(dx, dy);
var cap = lineCap == PenFP.LINECAP_ROUND
? GraphicsPathFP.ROUNDCAP : GraphicsPathFP.SQUARECAP;
dx = MathFP.Mul(_ffRad, MathFP.Div(dx, len));
dy = MathFP.Mul(_ffRad, MathFP.Div(dy, len));
var m = new MatrixFP(dx, dx, dy, -dy, p2.X, p2.Y);
_outline.AddMoveTo(new PointFP(0, GraphicsPathFP.ONE).Transform(m));
for (var i = 0; i < cap.Length; i++)
{
_outline.AddLineTo(new PointFP(cap[i]).Transform(m));
}
_outline.AddLineTo(new PointFP(0, -GraphicsPathFP.ONE).Transform(m));
_outline.AddClose();
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* get the tail outline.
* @param ff_rad
* @return
*/
public LineFP GetTailOutline(int ffRad)
{
var c = GetCenter();
var p = new PointFP(Pt2.X - c.X, Pt2.Y - c.Y);
p.Reset(p.Y, -p.X);
var dis = PointFP.Distance(PointFP.Origin, p);
if (dis == 0)
{
dis = 1;
}
p.Reset(MathFP.Div(MathFP.Mul(p.X, ffRad), dis),
MathFP.Div(MathFP.Mul(p.Y, ffRad), dis));
return(new LineFP(Pt2.X - p.X, Pt2.Y - p.Y, Pt2.X + p.X, Pt2.Y + p.Y));
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 13JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* get the lenght of the line.
*/
public int GetLength()
{
return(PointFP.Distance(Pt1, Pt2));
}