public void SetSelectedSegLen(double len)
{
if (Controller.LastSelSegment == null)
{
return;
}
MarkSegment seg = Controller.LastSelSegment.Value;
if (seg.FigureID == 0)
{
return;
}
CadFigure fig = Controller.DB.GetFigure(seg.FigureID);
CadVertex pa = fig.GetPointAt(seg.PtIndexA);
CadVertex pb = fig.GetPointAt(seg.PtIndexB);
Vector3d v;
v = pa.vector - Controller.LastDownPoint;
double da = v.Norm();
v = pb.vector - Controller.LastDownPoint;
double db = v.Norm();
if (da < db)
{
Vector3d np = CadMath.LinePoint(pb.vector, pa.vector, len);
Controller.StartEdit();
pa.vector = np;
fig.SetPointAt(seg.PtIndexA, pa);
Controller.EndEdit();
}
else
{
Vector3d np = CadMath.LinePoint(pa.vector, pb.vector, len);
Controller.StartEdit();
pb.vector = np;
fig.SetPointAt(seg.PtIndexB, pb);
Controller.EndEdit();
}
}
