fix: strip closing duplicate points in triangulation (segfault fix), batch line creation for NX speed, 6mm endmill params

tools/adaptive-isogrid/src/brain/triangulation.py

@@ -62,7 +62,12 @@ def build_pslg(geometry, params):
     hole_markers = []
     
     # Outer boundary (no offset needed — frame is handled in profile assembly)
-    outer = geometry['outer_boundary']
+    outer = list(geometry['outer_boundary'])
+    # Strip closing duplicate if last == first
+    if len(outer) > 2:
+        d = np.linalg.norm(np.array(outer[0]) - np.array(outer[-1]))
+        if d < 0.01:
+            outer = outer[:-1]
     v_start = len(vertices)
     vertices.extend(outer)
     n = len(outer)
@@ -84,6 +89,11 @@ def build_pslg(geometry, params):
             # Fallback for non-circular holes
             keepout_boundary = offset_polygon(hole['boundary'], keepout_dist, inward=False)
 
+        # Strip closing duplicate if present
+        if len(keepout_boundary) > 2:
+            d = np.linalg.norm(np.array(keepout_boundary[0]) - np.array(keepout_boundary[-1]))
+            if d < 0.01:
+                keepout_boundary = keepout_boundary[:-1]
         v_start = len(vertices)
         vertices.extend(keepout_boundary)
         n_h = len(keepout_boundary)

tools/adaptive-isogrid/src/nx/import_profile.py

@@ -246,69 +246,97 @@ def _find_or_create_sketch(
     return sketch
 
 
-def _draw_polyline_in_sketch(
+def _draw_polylines_batch(
     part: Any,
     sketch: Any,
-    points_3d: List[Tuple[float, float, float]],
+    polylines_3d: List[List[Tuple[float, float, float]]],
     lister: Any,
     close: bool = True,
 ) -> int:
     """
-    Draw a closed polyline in the sketch using individual line segments.
+    Draw multiple closed polylines in the sketch efficiently.
-    Returns number of lines created.
+
+    Creates all lines as NX curves first (fast), then adds them
+    to the sketch in one batch call (much faster than per-line builders).
+
+    Returns total number of lines created.
     """
     import NXOpen
 
-    if len(points_3d) < 2:
+    all_lines = []
-        return 0
+    total_lines = 0
 
-    lines_created = 0
+    for points_3d in polylines_3d:
-    n = len(points_3d)
+        if len(points_3d) < 2:
+            continue
 
-    # If last point == first point, don't double-close
+        n = len(points_3d)
-    if close and len(points_3d) >= 3:
+        # Strip closing duplicate
-        d = math.sqrt(sum((a - b) ** 2 for a, b in zip(points_3d[0], points_3d[-1])))
+        if close and n >= 3:
-        if d < 0.001:
+            d = math.sqrt(sum((a - b) ** 2 for a, b in zip(points_3d[0], points_3d[-1])))
-            n = len(points_3d) - 1  # skip duplicate closing point
+            if d < 0.001:
+                n = n - 1
 
-    segments = n if close else (n - 1)
+        segments = n if close else (n - 1)
 
-    for i in range(segments):
+        for i in range(segments):
-        p1 = points_3d[i]
+            p1 = points_3d[i]
-        p2 = points_3d[(i + 1) % n]
+            p2 = points_3d[(i + 1) % n]
 
+            try:
+                # CurveCollection.CreateLine(start: Point, end: Point) -> Line
+                start_obj = part.Points.CreatePoint(
+                    NXOpen.Point3d(p1[0], p1[1], p1[2])
+                )
+                end_obj = part.Points.CreatePoint(
+                    NXOpen.Point3d(p2[0], p2[1], p2[2])
+                )
+                line = part.Curves.CreateLine(start_obj, end_obj)
+                all_lines.append(line)
+                total_lines += 1
+            except Exception as exc:
+                if total_lines == 0:
+                    lister.WriteLine(f"[import] CreateLine failed: {exc}")
+                    # Try SketchLineBuilder as fallback for first line
+                    try:
+                        lb = part.Sketches.CreateLineBuilder()
+                        lb.SetStartPoint(NXOpen.Point3d(p1[0], p1[1], p1[2]))
+                        lb.SetEndPoint(NXOpen.Point3d(p2[0], p2[1], p2[2]))
+                        lb.Commit()
+                        lb.Destroy()
+                        total_lines += 1
+                        lister.WriteLine("[import] SketchLineBuilder fallback worked")
+                    except Exception as exc2:
+                        lister.WriteLine(f"[import] Both methods failed: {exc2}")
+                        return 0
+
+    # Add all curves to sketch in one batch call
+    if all_lines:
         try:
-            start_pt = NXOpen.Point3d(p1[0], p1[1], p1[2])
+            # Sketch.AddGeometry(infer, ellipse, curves)
-            end_pt = NXOpen.Point3d(p2[0], p2[1], p2[2])
+            sketch.AddGeometry(
-
+                NXOpen.Sketch.InferConstraintsOption.DoNotInferConstraints,
-            # SketchCollection.CreateLineBuilder() -> SketchLineBuilder
+                NXOpen.Sketch.AddEllipseOption.None_,
-            # SketchLineBuilder.SetStartPoint(Point3d), .SetEndPoint(Point3d)
+                all_lines,
-            # Builder.Commit() -> NXObject, Builder.Destroy()
+            )
-            line_builder = part.Sketches.CreateLineBuilder()
+            lister.WriteLine(f"[import] Added {len(all_lines)} lines to sketch via AddGeometry")
-            line_builder.SetStartPoint(start_pt)
-            line_builder.SetEndPoint(end_pt)
-            line_builder.Commit()
-            line_builder.Destroy()
-
-            lines_created += 1
         except Exception as exc:
-            if lines_created == 0:
+            lister.WriteLine(f"[import] AddGeometry batch failed: {exc}")
-                lister.WriteLine(f"[import] Line creation failed: {exc}")
+            # Try adding one by one
-                # Try fallback: create curve + add to sketch
+            added = 0
+            for line in all_lines:
                 try:
-                    start_obj = part.Points.CreatePoint(NXOpen.Point3d(p1[0], p1[1], p1[2]))
-                    end_obj = part.Points.CreatePoint(NXOpen.Point3d(p2[0], p2[1], p2[2]))
-                    line = part.Curves.CreateLine(start_obj, end_obj)
                     sketch.AddGeometry(
                         NXOpen.Sketch.InferConstraintsOption.DoNotInferConstraints,
                         NXOpen.Sketch.AddEllipseOption.None_,
                         [line],
                     )
-                    lines_created += 1
+                    added += 1
-                except Exception as exc2:
+                except Exception:
-                    lister.WriteLine(f"[import] Fallback line also failed: {exc2}")
+                    pass
+            lister.WriteLine(f"[import] Added {added}/{len(all_lines)} lines individually")
 
-    return lines_created
+    return total_lines
 
 
 def _draw_circle_in_sketch(
@@ -479,28 +507,30 @@ def main():
 
         total_lines = 0
 
-        # Draw outer boundary
+        # Collect all polylines to draw
+        all_polylines_3d = []
+
+        # Outer boundary
         outer_2d = profile.get("outer_boundary", [])
         if outer_2d:
             outer_3d = unproject_to_3d(outer_2d, transform)
-            n = _draw_polyline_in_sketch(work_part, sketch, outer_3d, lister, close=True)
+            all_polylines_3d.append(outer_3d)
-            total_lines += n
-            lister.WriteLine(f"[import] Outer boundary: {n} lines")
 
-        # Draw pocket cutouts
+        # Pocket cutouts
         pockets = profile.get("pockets", [])
-        lister.WriteLine(f"[import] Drawing {len(pockets)} pockets...")
+        lister.WriteLine(f"[import] Preparing {len(pockets)} pockets + outer boundary...")
 
-        for pi, pocket_pts in enumerate(pockets):
+        for pocket_pts in pockets:
             if len(pocket_pts) < 3:
                 continue
             pocket_3d = unproject_to_3d(pocket_pts, transform)
-            n = _draw_polyline_in_sketch(work_part, sketch, pocket_3d, lister, close=True)
+            all_polylines_3d.append(pocket_3d)
-            total_lines += n
 
-            # Progress every 50 pockets
+        # Draw everything in one batch
-            if (pi + 1) % 50 == 0:
+        lister.WriteLine(f"[import] Creating {len(all_polylines_3d)} polylines as NX curves...")
-                lister.WriteLine(f"[import]   ... {pi + 1}/{len(pockets)} pockets drawn")
+        total_lines = _draw_polylines_batch(
+            work_part, sketch, all_polylines_3d, lister, close=True,
+        )
 
         # Deactivate sketch
         try: