public sg_line(sg_Vector3 pt1, sg_Vector3 pt2)
{
_pt1 = pt1;
_pt2 = pt2;
_box = new SGBox3D(_pt1, _pt2);
_needCal = true;
}
public void appendPoint(sg_Vector3 pt)
{
sg_line line = new sg_line(_lastpt, pt);
_lines.Add(line);
_lastpt = pt;
_box = _box + line.Box;
}
public sg_polyline(sg_Vector3 pt1, sg_Vector3 pt2)
{
_lines.Clear();
_box = new SGBox3D(pt1, pt1);
_lastpt = pt1;
_l = -1;
appendPoint(pt2);
}
public SGBox3D(SGBox3D box)
{
_pt1 = box._pt1;
_pt2 = box._pt2;
}