public PathPos MovePositionAlongPath(float targetDist)
{
// returns the position on the path after moving "target" units along the path
float dst = 0;
int i = 0;
float lmd = 0;
var p1 = start.pt;
var p2 = p1;
foreach (var w in waypts)
{
p2 = w.toNode.pt;
//GraphUtil.Log("mpp i:" + i + " p1wc:" + p1wc + " p2wc:" + p2wc);
var ndst = dst + w.distance;
if (ndst > targetDist)
{
lmd = (targetDist - dst) / w.distance;
var pt = lmd * (p2 - p1) + p1;
//GraphUtil.Log("mpp i:" + i + " lmd:" + lmd + "ptwc:"+ptwc);
var pp1 = new PathPos(this, pt, w, i, lmd);
return(pp1);
}
dst = ndst;
p1 = p2;
i++;
}
// Edge cases - at start and end of path
PathPos pp2;
var wcnt = waypts.Count;
if (wcnt == 0)
{
// at the start
pp2 = new PathPos(this, p2, null, wcnt - 1, 1);
}
else
{
// at the end
var ww = waypts[wcnt - 1];
pp2 = new PathPos(this, p2, ww, wcnt - 1, 1);
}
return(pp2);
}
public LcNode PunchNewLinkPt(PathPos pp, string newptname = "", bool deleteparentlink = false)
{
return(PunchNewLinkPt(pp.weg.link, pp.pt, newptname: newptname, deleteparentlink: deleteparentlink));
}