aj
8e6fa677fb
Mirrors CSharpier conventions (4-space indent, Allman braces, System-first usings, 100-col wraps) so IDE auto-format and 'dotnet format' agree with the canonical formatter. Usage: dotnet tool restore && dotnet csharpier format .
268 lines
12 KiB
C#
268 lines
12 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using OpenNest.Bending;
|
|
using OpenNest.Geometry;
|
|
|
|
namespace OpenNest.IO.Bending
|
|
{
|
|
public enum BendRepairUnits
|
|
{
|
|
Unspecified,
|
|
Inches,
|
|
Millimeters,
|
|
}
|
|
|
|
/// <summary>Explicit opt-in. Distances are physical millimeters, not drawing coordinates.</summary>
|
|
public sealed class BendRepairOptions
|
|
{
|
|
public BendRepairUnits DrawingUnits { get; set; }
|
|
public double MaxEndpointMovementMillimeters { get; set; }
|
|
}
|
|
|
|
public sealed record BendRepairReport(
|
|
int BendIndex,
|
|
string Status,
|
|
string Reason,
|
|
Vector OriginalStart,
|
|
Vector OriginalEnd,
|
|
Vector Start,
|
|
Vector End
|
|
);
|
|
|
|
/// <summary>Conservative, atomic repair. Never edits cut entities or unassociated marks.</summary>
|
|
public static class BendRepair
|
|
{
|
|
public static List<BendRepairReport> Apply(
|
|
List<Entity> entities,
|
|
List<Bend> bends,
|
|
BendRepairOptions options
|
|
)
|
|
{
|
|
var reports = new List<BendRepairReport>();
|
|
if (options == null)
|
|
return reports;
|
|
var scale = options.DrawingUnits == BendRepairUnits.Inches ? 1 / 25.4 : 1.0;
|
|
var tolerance = 0.001 * scale;
|
|
var limit = options.MaxEndpointMovementMillimeters * scale;
|
|
var valid =
|
|
(
|
|
options.DrawingUnits == BendRepairUnits.Inches
|
|
|| options.DrawingUnits == BendRepairUnits.Millimeters
|
|
)
|
|
&& double.IsFinite(limit)
|
|
&& limit > tolerance
|
|
&& options.MaxEndpointMovementMillimeters <= 3.175;
|
|
var original = bends.Select(b => (b.StartPoint, b.EndPoint)).ToArray();
|
|
var marks = entities.OfType<Line>().Where(IsMark).ToList();
|
|
var cuts = entities.Where(IsCut).ToList();
|
|
// ShapeBuilder may reverse/weld its inputs; isolate it from all source geometry.
|
|
var shapes = ShapeBuilder.GetShapes(cuts.CloneAll(), tolerance);
|
|
var boundaries = shapes.Where(s => s.IsClosed()).SelectMany(s => s.Entities).ToList();
|
|
var polygons = shapes
|
|
.Where(s => s.IsClosed())
|
|
.Select(s => s.ToPolygonWithTolerance(tolerance / 10))
|
|
.ToList();
|
|
bool InMaterial(Vector point) => polygons.Count(p => p.ContainsPoint(point)) % 2 == 1;
|
|
|
|
for (var i = 0; i < bends.Count; i++)
|
|
{
|
|
var bend = bends[i];
|
|
var (start, end) = original[i];
|
|
var reason = "";
|
|
var status = "Skipped";
|
|
if (!valid)
|
|
reason =
|
|
"Specify drawing units and a finite movement limit above 0.001 and at most 3.175 mm.";
|
|
else if (!Finite(start) || !Finite(end) || start.DistanceTo(end) <= 2 * limit)
|
|
reason = "Invalid or too-short bend axis.";
|
|
else
|
|
{
|
|
var axis = (end - start) / start.DistanceTo(end);
|
|
var first = marks
|
|
.Where(m => Associated(m, start, end, tolerance, scale))
|
|
.ToList();
|
|
var last = marks
|
|
.Where(m => Associated(m, end, start, tolerance, scale))
|
|
.ToList();
|
|
if (first.Count != 1 || last.Count != 1 || ReferenceEquals(first[0], last[0]))
|
|
reason = "Missing or ambiguous collinear ticks at both original endpoints.";
|
|
else if (
|
|
original
|
|
.Where((_, j) => j != i)
|
|
.Any(b =>
|
|
Associated(first[0], b.StartPoint, b.EndPoint, tolerance, scale)
|
|
|| Associated(first[0], b.EndPoint, b.StartPoint, tolerance, scale)
|
|
|| Associated(last[0], b.StartPoint, b.EndPoint, tolerance, scale)
|
|
|| Associated(last[0], b.EndPoint, b.StartPoint, tolerance, scale)
|
|
)
|
|
)
|
|
reason = "Tick is shared with another bend.";
|
|
else
|
|
{
|
|
var probe = new Line(start - axis * limit, end + axis * limit);
|
|
var hits = new List<Vector>();
|
|
var uncertain = shapes
|
|
.Where(s => !s.IsClosed())
|
|
.Any(s => s.Intersects(probe));
|
|
foreach (var edge in boundaries)
|
|
{
|
|
if (
|
|
edge is Line line
|
|
&& OnAxis(line.StartPoint, start, axis, tolerance)
|
|
&& OnAxis(line.EndPoint, start, axis, tolerance)
|
|
&& System.Math.Max(
|
|
Dot(line.StartPoint - start, axis),
|
|
Dot(line.EndPoint - start, axis)
|
|
) >= -limit
|
|
&& System.Math.Min(
|
|
Dot(line.StartPoint - start, axis),
|
|
Dot(line.EndPoint - start, axis)
|
|
)
|
|
<= bend.Length + limit
|
|
)
|
|
uncertain = true;
|
|
if (edge.Intersects(probe, out var points))
|
|
foreach (var p in points)
|
|
if (Finite(p) && !hits.Any(h => h.DistanceTo(p) <= tolerance))
|
|
hits.Add(p);
|
|
}
|
|
var nearStart = hits.Where(p => p.DistanceTo(start) <= limit).ToList();
|
|
var nearEnd = hits.Where(p => p.DistanceTo(end) <= limit).ToList();
|
|
if (
|
|
uncertain
|
|
|| hits.Count != 2
|
|
|| nearStart.Count != 1
|
|
|| nearEnd.Count != 1
|
|
)
|
|
reason =
|
|
"Missing/ambiguous closed cut boundaries, interior crossing, or movement exceeds limit.";
|
|
else
|
|
{
|
|
// Project the intersection back onto the existing axis; never rotate a bend.
|
|
var newStart = start + axis * Dot(nearStart[0] - start, axis);
|
|
var newEnd = start + axis * Dot(nearEnd[0] - start, axis);
|
|
var sample = axis * (10 * tolerance);
|
|
if (
|
|
!InMaterial((newStart + newEnd) / 2)
|
|
|| !InMaterial(newStart + sample)
|
|
|| !InMaterial(newEnd - sample)
|
|
|| InMaterial(newStart - sample)
|
|
|| InMaterial(newEnd + sample)
|
|
)
|
|
reason =
|
|
"Endpoints do not bound an unambiguous material interval (possible tangent).";
|
|
else if (
|
|
Dot(newEnd - newStart, axis)
|
|
<= first[0].Length + last[0].Length + tolerance
|
|
)
|
|
reason = "Repaired ticks would overlap or reverse the bend.";
|
|
else if (
|
|
newStart.DistanceTo(start) <= tolerance
|
|
&& newEnd.DistanceTo(end) <= tolerance
|
|
)
|
|
{
|
|
status = "Unchanged";
|
|
reason = "Already on cut boundaries.";
|
|
}
|
|
else
|
|
{
|
|
// Prepare both replacements before committing either endpoint or entity list.
|
|
var a = (Line)first[0].Clone();
|
|
var b = (Line)last[0].Clone();
|
|
a.Offset(newStart - start);
|
|
b.Offset(newEnd - end);
|
|
var ai = entities.IndexOf(first[0]);
|
|
var bi = entities.IndexOf(last[0]);
|
|
if (ai < 0 || bi < 0)
|
|
reason = "Tick was already consumed; unchanged.";
|
|
else
|
|
{
|
|
entities[ai] = a;
|
|
entities[bi] = b;
|
|
bend.StartPoint = newStart;
|
|
bend.EndPoint = newEnd;
|
|
status = "Repaired";
|
|
reason =
|
|
"Both endpoints snapped along axis; only their two associated ticks replaced.";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
reports.Add(
|
|
new BendRepairReport(
|
|
i,
|
|
status,
|
|
reason,
|
|
start,
|
|
end,
|
|
bend.StartPoint,
|
|
bend.EndPoint
|
|
)
|
|
);
|
|
}
|
|
return reports;
|
|
}
|
|
|
|
private static bool Finite(Vector p) => double.IsFinite(p.X) && double.IsFinite(p.Y);
|
|
|
|
private static double Dot(Vector a, Vector b) => a.X * b.X + a.Y * b.Y;
|
|
|
|
private static bool OnAxis(Vector p, Vector origin, Vector axis, double tolerance) =>
|
|
System.Math.Abs((p.X - origin.X) * axis.Y - (p.Y - origin.Y) * axis.X) <= tolerance;
|
|
|
|
private static bool Continuous(Entity e) =>
|
|
string.IsNullOrEmpty(e.LineTypeName)
|
|
|| string.Equals(e.LineTypeName, "Continuous", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(e.LineTypeName, "ByLayer", StringComparison.OrdinalIgnoreCase);
|
|
|
|
private static bool IsMark(Entity e) =>
|
|
Continuous(e)
|
|
&& (
|
|
string.Equals(e.Layer?.Name, "ETCH", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(e.Layer?.Name, "SCRIBE", StringComparison.OrdinalIgnoreCase)
|
|
);
|
|
|
|
private static bool IsCut(Entity e) =>
|
|
Continuous(e)
|
|
&& (
|
|
e.Layer?.Name == "0"
|
|
|| string.Equals(e.Layer?.Name, "CUT", StringComparison.OrdinalIgnoreCase)
|
|
)
|
|
&& (e is Line || e is Arc || e is Circle);
|
|
|
|
private static bool Associated(
|
|
Line mark,
|
|
Vector endpoint,
|
|
Vector other,
|
|
double tolerance,
|
|
double scale
|
|
)
|
|
{
|
|
var length = endpoint.DistanceTo(other);
|
|
if (
|
|
!Finite(endpoint)
|
|
|| !Finite(other)
|
|
|| length <= tolerance
|
|
|| !Finite(mark.StartPoint)
|
|
|| !Finite(mark.EndPoint)
|
|
|| mark.Length <= tolerance
|
|
|| mark.Length > 25.4 * scale + tolerance
|
|
|| mark.Length >= length / 3
|
|
)
|
|
return false;
|
|
var axis = (other - endpoint) / length;
|
|
if (
|
|
!OnAxis(mark.StartPoint, endpoint, axis, tolerance)
|
|
|| !OnAxis(mark.EndPoint, endpoint, axis, tolerance)
|
|
)
|
|
return false;
|
|
var a = Dot(mark.StartPoint - endpoint, axis);
|
|
var b = Dot(mark.EndPoint - endpoint, axis);
|
|
return System.Math.Abs(System.Math.Min(a, b)) <= tolerance
|
|
&& System.Math.Max(a, b) > tolerance;
|
|
}
|
|
}
|
|
}
|