public override void PostProcess(MachineOpToGCode gcg)
{
gcg.DefaultStockHeight = base.StockSurface.Cached;
if (_trajectories.Count == 0)
{
return;
}
CBValue <double> original_feedrate = base.CutFeedrate;
// NOTE: toolpaths are emit in a hacky way to allow variable feedrate.
// CutFeedrate base setting is patched before posting each toolpath item,
// and should be restored in the end
try
{
foreach (Toolpath path in _toolpaths)
{
emit_toolpath(gcg, path);
}
}
finally
{
base.CutFeedrate = original_feedrate;
}
}
private void emit_toolpath(MachineOpToGCode gcg, Toolpath path)
{
// first item is the spiral by convention
if (path.Trajectory[0].Item_type != Sliced_path_item_type.SPIRAL)
{
throw new Exception("no spiral in sliced path");
}
CBValue <double> normal_feedrate = base.CutFeedrate;
CBValue <double> chord_feedrate = _chord_feedrate != 0 ? new CBValue <double>(_chord_feedrate) : base.CutFeedrate;
CBValue <double> spiral_feedrate = _spiral_feedrate != 0 ? new CBValue <double>(_spiral_feedrate) : base.CutFeedrate;
CBValue <double> leadin_feedrate = _leadin.Cached != null && _leadin.Cached.LeadInFeedrate != 0 ? new CBValue <double>(_leadin.Cached.LeadInFeedrate) : base.CutFeedrate;
if (path.Leadin != null)
{
base.CutFeedrate = leadin_feedrate;
Polyline p = (Polyline)path.Leadin.Clone();
p.ApplyTransformation(Matrix4x4F.Translation(0, 0, path.Bottom));
gcg.AppendPolyLine(p, double.NaN);
}
foreach (Sliced_path_item item in path.Trajectory)
{
switch (item.Item_type)
{
case Sliced_path_item_type.SPIRAL:
base.CutFeedrate = spiral_feedrate;
break;
case Sliced_path_item_type.SLICE:
base.CutFeedrate = normal_feedrate;
break;
case Sliced_path_item_type.CHORD:
case Sliced_path_item_type.SMOOTH_CHORD:
case Sliced_path_item_type.SLICE_SHORTCUT:
case Sliced_path_item_type.GUIDE:
base.CutFeedrate = chord_feedrate;
break;
default:
throw new Exception("unknown item type in sliced trajectory");
}
Polyline p = (Polyline)item.Clone();
p.ApplyTransformation(Matrix4x4F.Translation(0, 0, path.Bottom));
gcg.AppendPolyLine(p, double.NaN);
}
base.CutFeedrate = normal_feedrate;
}