/// <summary>
/// Generate a set of tool paths which will completely remove the material specified in
/// the polygons, plus an offset equal to the radius of the tool used.
/// </summary>
/// <param name="polygons"></param>
/// <param name="maxShrink">maximum distance between disjoint paths</param>
/// <returns></returns>
public static List <LineStrip> ObliterateSlice(Slice polygons, float maxShrink, bool reverse = false)
{
List <LineStrip> lines = new List <LineStrip>();
foreach (Slice slice in polygons.IndividualPolygons())
{
PathTree tree = new PathTree(reverse);
Slice inside = new Slice(slice.GetLines(Slice.LineType.Hole), slice.Plane);
Slice shrink = new Slice(slice);
while (shrink.Area() > 0)
{
shrink = new Slice(shrink.GetLines(Slice.LineType.Outside), shrink.Plane);
foreach (var a in shrink.IndividualPolygons())
{
if (!tree.AddPolygon(a))
{
// The new polygon didn't fit into the path tree... shouldn't get here.
}
}
shrink.Offset(-maxShrink);
shrink.Subtract(inside);
}
LineStrip toolPath = new LineStrip();
tree.GenerateToolPath(toolPath, tree.CreatePath(), maxShrink * 2.0f);
lines.Add(toolPath);
}
return(lines);
}