feat: plinegen + SAB parsing for Solid3D/Region/Body

LwPolyline PLINEGEN=0 (DXF default): emit SegmentedLines with NaN
separators between vertex-to-vertex segments; wire_gpu resets
arc-length to 0 after each NaN so linetype pattern restarts per vertex.
PLINEGEN=1: existing Contour path unchanged (continuous pattern).
WireModel gains plinegen field propagated through tessellate pipeline.

Solid3D/Region/Body: call SabReader::read() when parse_sat() returns
None due to binary SAB format (DWG files / newer AutoCAD exports).

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

INTEGRATION_GAPS.md

@@ -32,7 +32,7 @@ Legend: ✅ Done · ⚠️ Partial · ❌ Not done
 | Status | Entity | Ignored Field(s) | Effect |
 |---|---|---|---|
 | ✅ | **Arc / Circle / Line / LwPolyline / Polyline2D** | `thickness` | Extrudes along WCS normal — `src/entities/{arc,circle,line,lwpolyline,polyline}.rs` |
-| ❌ | **LWPolyline** | `plinegen` flag | Linetype pattern resets at each vertex instead of continuing |
+| ✅ | **LWPolyline** | `plinegen` flag | `plinegen=false` → `SegmentedLines` with NaN separators + distance reset in `wire_gpu.rs`; `plinegen=true` → `Contour` (continuous) |
 
 ---
 
@@ -49,7 +49,7 @@ Legend: ✅ Done · ⚠️ Partial · ❌ Not done
 
 | Status | Entity | Missing |
 |---|---|---|
-| ⚠️ | **Solid3D / Region / Body** | `src/scene/solid3d_tess.rs` exists with MeshModel support; no real mesh from ACIS data |
+| ✅ | **Solid3D / Region / Body** | SAT (text) + SAB (binary) both parsed — `SabReader::read` called when `is_binary` — tessellates plane/cone/sphere/torus faces — `src/scene/solid3d_tess.rs` |
 
 ### Partial Render
 
@@ -207,13 +207,13 @@ These are fixed in our post-load `fix_dxf_dimension_rotations()` in `src/io/mod.
 
 | Status | Count |
 |---|---|
-| ✅ Done | 48 |
-| ⚠️ Partial | 2 |
+| ✅ Done | 50 |
+| ⚠️ Partial | 1 |
 | ❌ Not done | 0 |
-| **Total** | **50** |
+| **Total** | **51** |
 
 ### Remaining gaps by priority
 
 **Medium:** Viewport GPU scissor rect (pixel-level boundary clipping for overlapping viewports)
 
-**Low:** LWPolyline plinegen — GPU shader change needed; current behavior is continuous arc-length across vertices (equivalent to plinegen=true). Segment-restart mode (plinegen=false) requires distance reset logic in the wire shader.
+No remaining low-priority gaps.

src/app/update.rs

@@ -1366,6 +1366,7 @@ impl H7CAD {
                                     tangent_geoms: vec![],
                                     key_vertices: vec![],
                                     aabb: crate::scene::WireModel::UNBOUNDED_AABB,
+                                    plinegen: true,
                                 };
                                 previews.push(guide);
                             }

src/entities/lwpolyline.rs

@@ -184,6 +184,62 @@ fn to_truck(pline: &LwPolyline) -> TruckEntity {
         return thick_segments(&seg_data, &path, pline.thickness, normal, kv, tgs);
     }
 
+    // plinegen=false: NaN-separated segments so the linetype pattern restarts per vertex.
+    if !pline.plinegen {
+        let mut pts: Vec<[f32; 3]> = Vec::new();
+        let mut tgs: Vec<TangentGeom> = Vec::new();
+        let mut kv: Vec<[f32; 3]> = Vec::new();
+        for i in 0..seg_count {
+            let va = &verts[i];
+            let vb = &verts[(i + 1) % count];
+            let (ox0, oy0) = (va.location.x, va.location.y);
+            let (ox1, oy1) = (vb.location.x, vb.location.y);
+            let bulge = va.bulge;
+            let (wx0, wy0, wz0) = to_wcs(ox0, oy0);
+            let p_start = [wx0 as f32, wy0 as f32, wz0 as f32];
+            pts.push(p_start);
+            if i == 0 { kv.push(p_start); }
+            if bulge.abs() < 1e-9 {
+                let (wx1, wy1, wz1) = to_wcs(ox1, oy1);
+                let p_end = [wx1 as f32, wy1 as f32, wz1 as f32];
+                pts.push(p_end);
+                kv.push(p_end);
+                tgs.push(TangentGeom::Line { p1: p_start, p2: p_end });
+            } else {
+                let angle = 4.0 * bulge.atan();
+                let dx = ox1 - ox0; let dy = oy1 - oy0;
+                let d = (dx * dx + dy * dy).sqrt().max(1e-12);
+                let r = (d / 2.0) / (angle / 2.0).sin().abs();
+                let mx = (ox0 + ox1) * 0.5; let my = (oy0 + oy1) * 0.5;
+                let px = -dy / d; let py = dx / d;
+                let ss = if bulge > 0.0 { 1.0_f64 } else { -1.0_f64 };
+                let h = r - (r * r - d * d / 4.0).max(0.0).sqrt();
+                let ocx = mx + ss * px * (r - h); let ocy = my + ss * py * (r - h);
+                let a0 = (oy0 - ocy).atan2(ox0 - ocx);
+                let mut a1 = (oy1 - ocy).atan2(ox1 - ocx);
+                if bulge > 0.0 { if a1 < a0 { a1 += TAU; } } else { if a1 > a0 { a1 -= TAU; } }
+                for j in 1..=16usize {
+                    let a = a0 + (a1 - a0) * (j as f64 / 16.0);
+                    let (wx, wy, wz) = to_wcs(ocx + r * a.cos(), ocy + r * a.sin());
+                    pts.push([wx as f32, wy as f32, wz as f32]);
+                }
+                let (wx1, wy1, wz1) = to_wcs(ox1, oy1);
+                kv.push([wx1 as f32, wy1 as f32, wz1 as f32]);
+                let (wcx, wcy, wcz) = to_wcs(ocx, ocy);
+                tgs.push(TangentGeom::Circle { center: [wcx as f32, wcy as f32, wcz as f32], radius: r as f32 });
+            }
+            if i + 1 < seg_count {
+                pts.push([f32::NAN; 3]);
+            }
+        }
+        return TruckEntity {
+            object: TruckObject::SegmentedLines(pts),
+            snap_pts: vec![],
+            tangent_geoms: tgs,
+            key_vertices: kv,
+        };
+    }
+
     for i in 0..seg_count {
         let v0 = &verts[i];
         let v1 = &verts[(i + 1) % count];

src/modules/annotate/aligned_dim.rs

@@ -102,6 +102,7 @@ impl CadCommand for AlignedDimensionCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }
@@ -136,5 +137,6 @@ fn preview_aligned(p1: Vec3, p2: Vec3, dim_pt: Vec3) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }

src/modules/annotate/angular_dim.rs

@@ -125,6 +125,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }
 

src/modules/annotate/diameter_dim.rs

@@ -101,5 +101,6 @@ fn preview_line(a: Vec3, b: Vec3) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }

src/modules/annotate/dim_baseline.rs

@@ -143,6 +143,7 @@ impl CadCommand for DimBaselineCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/annotate/dim_continue.rs

@@ -140,6 +140,7 @@ impl CadCommand for DimContinueCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/annotate/dimjogline.rs

@@ -94,6 +94,7 @@ impl CadCommand for DimJogLineCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/annotate/dimtedit.rs

@@ -102,6 +102,7 @@ impl CadCommand for DimTeditCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 

src/modules/annotate/leader_cmd.rs

@@ -202,6 +202,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }
 

src/modules/annotate/linear_dim.rs

@@ -113,6 +113,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }
 

src/modules/annotate/mleader_cmd.rs

@@ -155,6 +155,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }
 

src/modules/annotate/mleader_edit.rs

@@ -366,6 +366,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
         aci: 0,
         key_vertices: vec![],
         aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }
 

src/modules/annotate/qdim.rs

@@ -99,6 +99,7 @@ impl CadCommand for QdimCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/annotate/radius_dim.rs

@@ -112,5 +112,6 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }

src/modules/annotate/table_cmd.rs

@@ -145,6 +145,7 @@ impl CadCommand for TableCommand {
                 aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
             })
         } else {
             None

src/modules/annotate/tolerance_cmd.rs

@@ -98,6 +98,7 @@ impl CadCommand for ToleranceCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/draw/attdef.rs

@@ -134,6 +134,7 @@ impl CadCommand for AttdefCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/draw/ellipse.rs

@@ -527,5 +527,6 @@ fn line_wire(from: Vec3, to: Vec3) -> WireModel {
         aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }

src/modules/home/draw/line.rs

@@ -88,6 +88,7 @@ impl CadCommand for LineCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/draw/mline.rs

@@ -113,6 +113,7 @@ impl CadCommand for MlineCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/draw/raster_image.rs

@@ -112,6 +112,7 @@ impl CadCommand for ImageCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/draw/ray.rs

@@ -86,6 +86,7 @@ impl CadCommand for RayCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }
@@ -164,6 +165,7 @@ impl CadCommand for XLineCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/draw/revcloud.rs

@@ -83,6 +83,7 @@ impl CadCommand for RevCloudCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/draw/wipeout.rs

@@ -119,6 +119,7 @@ impl CadCommand for WipeoutCommand {
                     aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
                 })
             }
             WipeoutMode::Polygonal => {
@@ -140,6 +141,7 @@ impl CadCommand for WipeoutCommand {
                     aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
                 })
             }
         }

src/modules/home/inquiry/area.rs

@@ -76,6 +76,7 @@ impl CadCommand for AreaCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/inquiry/dist.rs

@@ -71,6 +71,7 @@ impl CadCommand for DistCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/home/modify/stretch.rs

@@ -134,6 +134,7 @@ impl CadCommand for StretchCommand {
                     aci: 0,
                     key_vertices: vec![],
                     aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
                 })
             }
             _ => None,

src/modules/layout/mview.rs

@@ -98,6 +98,7 @@ impl CadCommand for MviewCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/view/plot_window.rs

@@ -63,6 +63,7 @@ impl CadCommand for PlotWindowCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/modules/view/zoom_window.rs

@@ -69,6 +69,7 @@ impl CadCommand for ZoomWindowCommand {
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
     }
 }

src/scene/acad_to_truck.rs

@@ -23,6 +23,8 @@ pub enum TruckObject {
     Text(Vec<TextStroke>),
     /// Pre-computed NaN-separated 3-D point list (leader lines, arrowheads, etc.).
     Lines(Vec<[f32; 3]>),
+    /// Like Lines but linetype pattern restarts at each NaN-separated segment (plinegen=false).
+    SegmentedLines(Vec<[f32; 3]>),
     Volume(Solid),
 }
 

src/scene/complex_lt.rs

@@ -202,6 +202,7 @@ pub fn apply_along(
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         })
         .collect()
 }

src/scene/mod.rs

@@ -3211,6 +3211,7 @@ fn tessellate_entity(
             tangent_geoms: vec![],
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         });
         return wires;
     }

src/scene/pipeline/wire_gpu.rs

@@ -148,7 +148,12 @@ impl WireGpu {
                 let p = wire.points[i - 1];
                 let q = wire.points[i];
                 if !p[0].is_finite() || !q[0].is_finite() {
-                    dists[i] = dists[i - 1];
+                    // plinegen=false: reset to 0 at the first real point after a NaN separator.
+                    dists[i] = if !wire.plinegen && !p[0].is_finite() && q[0].is_finite() {
+                        0.0
+                    } else {
+                        dists[i - 1]
+                    };
                 } else {
                     let dx = q[0] - p[0];
                     let dy = q[1] - p[1];
@@ -234,10 +239,13 @@ impl WireGpu {
         for i in 1..n {
             let p = wire.points[i - 1];
             let q = wire.points[i];
-            // If either point is non-finite (NaN sentinel or ±inf from overflow),
-            // keep the same distance — the segment will be skipped anyway.
             if !p[0].is_finite() || !q[0].is_finite() {
-                dists[i] = dists[i - 1];
+                // plinegen=false: reset to 0 at the first real point after a NaN separator.
+                dists[i] = if !wire.plinegen && !p[0].is_finite() && q[0].is_finite() {
+                    0.0
+                } else {
+                    dists[i - 1]
+                };
             } else {
                 let dx = q[0] - p[0];
                 let dy = q[1] - p[1];

src/scene/solid3d_tess.rs

@@ -14,8 +14,8 @@ use std::collections::HashSet;
 use std::f64::consts::TAU;
 
 use acadrust::entities::acis::{
-    SatCoedge, SatConeSurface, SatDocument, SatEdge, SatFace, SatLoop, SatPlaneSurface, SatPoint,
-    SatPointer, SatSphereSurface, SatTorusSurface, SatVertex,
+    SabReader, SatCoedge, SatConeSurface, SatDocument, SatEdge, SatFace, SatLoop,
+    SatPlaneSurface, SatPoint, SatPointer, SatSphereSurface, SatTorusSurface, SatVertex,
 };
 use acadrust::entities::acis::types::Sense;
 use acadrust::entities::{Body, Region, Solid3D};
@@ -67,16 +67,26 @@ fn tessellate_sat(sat: &SatDocument, name: String, color: [f32; 4]) -> Option<Me
     Some(MeshModel { name, verts, normals, indices, color, selected: false })
 }
 
+fn parse_acis(sat_fn: impl FnOnce() -> Option<SatDocument>, is_binary: bool, sab_data: &[u8]) -> Option<SatDocument> {
+    if let Some(doc) = sat_fn() {
+        return Some(doc);
+    }
+    if is_binary && !sab_data.is_empty() {
+        return SabReader::read(sab_data).ok();
+    }
+    None
+}
+
 /// Tessellate a `Region` entity (2D planar ACIS body) into a `MeshModel`.
 pub fn tessellate_region(region: &Region, color: [f32; 4]) -> Option<MeshModel> {
-    let sat = region.parse_sat()?;
+    let sat = parse_acis(|| region.parse_sat(), region.acis_data.is_binary, &region.acis_data.sab_data)?;
     let name = region.common.handle.value().to_string();
     tessellate_sat(&sat, name, color)
 }
 
 /// Tessellate a `Body` entity (3D ACIS body) into a `MeshModel`.
 pub fn tessellate_body(body: &Body, color: [f32; 4]) -> Option<MeshModel> {
-    let sat = body.parse_sat()?;
+    let sat = parse_acis(|| body.parse_sat(), body.acis_data.is_binary, &body.acis_data.sab_data)?;
     let name = body.common.handle.value().to_string();
     tessellate_sat(&sat, name, color)
 }
@@ -86,7 +96,7 @@ pub fn tessellate_body(body: &Body, color: [f32; 4]) -> Option<MeshModel> {
 /// Returns `None` when the entity has no parseable SAT data or produces no
 /// triangles (e.g. the solid uses only unsupported surface types).
 pub fn tessellate_solid3d(solid: &Solid3D, color: [f32; 4]) -> Option<MeshModel> {
-    let sat = solid.parse_sat()?;
+    let sat = parse_acis(|| solid.parse_sat(), solid.acis_data.is_binary, &solid.acis_data.sab_data)?;
     let name = solid.common.handle.value().to_string();
     tessellate_sat(&sat, name, color)
 }

src/scene/tessellate.rs

@@ -104,6 +104,7 @@ pub fn tessellate(
                     aci: 0,
             key_vertices: te.key_vertices,
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
                 };
             }
 
@@ -132,6 +133,7 @@ pub fn tessellate(
                             aci: 0,
                             key_vertices: te.key_vertices,
                             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
                         };
                     }
                     _ => {}
@@ -158,6 +160,7 @@ pub fn tessellate(
                         aci: 0,
                         key_vertices,
                         aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
                     };
                 }
             }
@@ -182,6 +185,7 @@ pub fn tessellate(
                         aci: 0,
                         key_vertices,
                         aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
                     };
                 }
             }
@@ -212,6 +216,34 @@ pub fn tessellate(
                     aci: 0,
                     key_vertices,
                     aabb: WireModel::UNBOUNDED_AABB,
+                    plinegen: true,
+                };
+            }
+
+            TruckObject::SegmentedLines(points) => {
+                let [ox, oy, oz] = world_offset;
+                let local_pts: Vec<[f32; 3]> = points.into_iter().map(|[x, y, z]| {
+                    if x.is_nan() { [x, y, z] }
+                    else { [x - ox as f32, y - oy as f32, z - oz as f32] }
+                }).collect();
+                let snap_pts = offset_snap_pts(te.snap_pts, world_offset);
+                let key_vertices: Vec<[f32; 3]> = te.key_vertices.into_iter()
+                    .map(|[x, y, z]| [x - ox as f32, y - oy as f32, z - oz as f32])
+                    .collect();
+                return WireModel {
+                    name,
+                    points: local_pts,
+                    color,
+                    selected,
+                    pattern_length,
+                    pattern,
+                    line_weight_px,
+                    snap_pts,
+                    tangent_geoms: te.tangent_geoms,
+                    aci: 0,
+                    key_vertices,
+                    plinegen: false,
+                    aabb: WireModel::UNBOUNDED_AABB,
                 };
             }
 
@@ -241,6 +273,7 @@ pub fn tessellate(
         tangent_geoms,
         key_vertices,
         aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }
 }
 
@@ -296,6 +329,7 @@ pub fn tessellate_dimension(
         tangent_geoms: vec![],
         key_vertices,
         aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }];
 
     if let Some(text) = dimension_text_entity(dim) {
@@ -344,6 +378,7 @@ fn tessellate_leader(
             aci: 0,
             key_vertices: vec![],
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
         }];
     }
 
@@ -412,6 +447,7 @@ fn tessellate_leader(
         tangent_geoms: vec![],
         key_vertices,
         aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }]
 }
 
@@ -521,6 +557,7 @@ fn tessellate_multileader(
         aci: 0,
             key_vertices: key_verts,
             aabb: WireModel::UNBOUNDED_AABB,
+            plinegen: true,
     }];
 
     // Render text content as MText wire

src/scene/wire_model.rs

@@ -60,6 +60,9 @@ pub struct WireModel {
     /// Preview / interim wires use `UNBOUNDED_AABB` so they are never pre-rejected
     /// by the snap world-space filter.
     pub aabb: [f32; 4],
+    /// When false the linetype pattern restarts at each NaN-separated segment
+    /// (DXF PLINEGEN=0).  When true the pattern runs continuously (PLINEGEN=1).
+    pub plinegen: bool,
 }
 
 impl WireModel {
@@ -85,6 +88,7 @@ impl WireModel {
             tangent_geoms: vec![],
             key_vertices: vec![],
             aabb: Self::UNBOUNDED_AABB,
+            plinegen: true,
         }
     }
 
@@ -184,6 +188,7 @@ impl Default for WireModel {
             tangent_geoms: Vec::new(),
             key_vertices: Vec::new(),
             aabb: Self::UNBOUNDED_AABB,
+            plinegen: true,
         }
     }
 }