Coil (PrimitiveCoil: diameter, two of revolutions/height/pitch, circular or square section inside/on/outside, start angle, handedness) on a new kernel helical sweep; loft to a point (sketch point sections, pyramids); recipes: a sweep along a fitted 3D helix replays as a coil (oracle 49, compared within 0.5% since Fusion's path is a spline fit) and loft point sections (oracle 37)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/doc/src/params.rs

@@ -138,6 +138,15 @@ impl FeatureKind {
                 }
             }
             FeatureKind::Emboss { depth, .. } => v.push(("Depth", depth, L)),
+            FeatureKind::Coil { diameter, pitch, turns, section_size, start_angle, .. } => {
+                v.push(("Diameter", diameter, L));
+                v.push(("Pitch", pitch, L));
+                v.push(("Revolutions", turns, U));
+                v.push(("Section size", section_size, L));
+                if let Some(a) = start_angle {
+                    v.push(("Start angle", a, A));
+                }
+            }
             FeatureKind::Rib { thickness, depth, .. } => {
                 v.push(("Thickness", thickness, L));
                 if let Some(d) = depth {