public virtual void Append_slice(Slice slice, List <Point2F> guide)
{
if (_last_slice == null)
{
throw new Exception("attempt to install slice without the root slice");
}
if (guide == null)
{
Path.Add(connect_slices(slice, _last_slice));
}
else
{
Sliced_path_item p = new Sliced_path_item(Sliced_path_item_type.GUIDE);
p.Add(_last_slice.End);
foreach (Point2F pt in guide)
{
p.Add(pt);
}
p.Add(slice.Start);
Path.Add(p);
}
append_slice(slice);
}
protected Sliced_path_item connect_slices(Slice dst, Slice src)
{
Sliced_path_item path = new Sliced_path_item(Sliced_path_item_type.CHORD);
path.Add(src.End);
path.Add(dst.Start);
return(path);
}
public void Append_return_to_base(List <Point2F> exit)
{
Sliced_path_item p = new Sliced_path_item(Sliced_path_item_type.RETURN_TO_BASE);
p.Add(_last_slice.End);
foreach (Point2F pt in exit)
{
p.Add(pt);
}
Path.Add(p);
}
public void Append_spiral(Point2F start, Point2F end, Vector2d start_tangent, double ted, double tool_r, RotationDirection dir)
{
Sliced_path_item spiral = new Sliced_path_item(Sliced_path_item_type.SPIRAL);
double spacing = Spiral_generator.Calc_reverse_spacing(end.DistanceTo(start), tool_r, ted, _general_tolerance);
foreach (Biarc2d biarc in Spiral_generator.Gen_archimedean_spiral(start, end, start_tangent, spacing, dir))
{
spiral.Add(biarc, _general_tolerance);
}
Path.Add(spiral);
}
public override void Append_slice(Slice slice, List <Point2F> guide)
{
if (guide == null)
{
Sliced_path_item biarc = smooth_connect_slices(slice, _last_slice);
if (biarc != null)
{
Path.Add(biarc);
append_slice(slice);
return;
}
}
base.Append_slice(slice, guide);
}
private Sliced_path_item smooth_connect_slices(Slice dst, Slice src)
{
Sliced_path_item path = null;
// do not emit biarcs if distance is too small
if (src.End.DistanceTo(dst.Start) > _min_arc_len)
{
path = connect_slices_with_biarc(dst, src);
if (path == null)
{
Logger.warn("biarc is outside the slice, replacing with chord");
}
}
return(path);
}
private Sliced_path_item connect_slices_with_biarc(Slice dst, Slice src)
{
Point2F start = src.End;
Point2F end = dst.Start;
// unit normals to points
Vector2d vn_start = new Vector2d(src.Center, start).Unit();
Vector2d vn_end = new Vector2d(dst.Center, end).Unit();
// tangents to points
Vector2d vt_start;
Vector2d vt_end;
if (src.Dir == RotationDirection.CW)
{
vt_start = new Vector2d(vn_start.Y, -vn_start.X);
}
else
{
vt_start = new Vector2d(-vn_start.Y, vn_start.X);
}
if (dst.Dir == RotationDirection.CW)
{
vt_end = new Vector2d(vn_end.Y, -vn_end.X);
}
else
{
vt_end = new Vector2d(-vn_end.Y, vn_end.X);
}
Biarc2d biarc = new Biarc2d(start, vt_start, end, vt_end);
if (!is_biarc_inside_ball(biarc, src.Ball))
{
return(null);
}
Sliced_path_item path = new Sliced_path_item(Sliced_path_item_type.SMOOTH_CHORD);
path.Add(biarc, _general_tolerance);
return(path);
}
protected void append_slice(Slice slice)
{
// emit segments
for (int segidx = 0; segidx < slice.Segments.Count; segidx++)
{
// connect segments
if (segidx > 0)
{
Sliced_path_item shortcut = new Sliced_path_item(Sliced_path_item_type.SLICE_SHORTCUT);
shortcut.Add(slice.Segments[segidx - 1].P2);
shortcut.Add(slice.Segments[segidx].P1);
Path.Add(shortcut);
}
Sliced_path_item arc = new Sliced_path_item(Sliced_path_item_type.SLICE);
arc.Add(slice.Segments[segidx], _general_tolerance);
Path.Add(arc);
}
_last_slice = slice;
}