fix(geometry): honor polyline OCS in commands

Route editing and derived geometry through kernel world-space curves.\n\nRefs #797\nRefs #798\nRefs #799

src/app/command_driver.rs

@@ -2677,13 +2677,21 @@ impl OpenCADStudio {
                             }
                         }
                         acadrust::EntityType::LwPolyline(p) => {
-                            for v in &mut p.vertices {
+                            let Some(mut world) =
+                                crate::entities::curve::lwpolyline_world_xy(p)
+                            else {
+                                continue;
+                            };
+                            for v in &mut world.vertices {
                                 if in_win(v.location.x, v.location.y) {
                                     v.location.x += dx;
                                     v.location.y += dy;
                                     stretched = true;
                                 }
                             }
+                            if stretched {
+                                *p = world;
+                            }
                         }
                         acadrust::EntityType::Polyline2D(p) => {
                             for v in &mut p.vertices {

src/app/commands/draw.rs

@@ -857,33 +857,21 @@ impl OpenCADStudio {
                 use acadrust::types::Vector3;
                 let mut loops: Vec<Vec<Vector3>> = Vec::new();
                 for (_, e) in self.tabs[i].scene.selected_entities().iter() {
-                    match e {
+                    let supported = matches!(
+                        e,
                         acadrust::EntityType::LwPolyline(pl)
-                            if pl.is_closed && pl.vertices.len() >= 3 =>
-                        {
-                            loops.push(
-                                pl.vertices
-                                    .iter()
-                                    .map(|v| Vector3::new(v.location.x, v.location.y, 0.0))
-                                    .collect(),
-                            );
-                        }
-                        acadrust::EntityType::Circle(c) => {
-                            let n = 64;
-                            loops.push(
-                                (0..n)
-                                    .map(|k| {
-                                        let a = std::f64::consts::TAU * k as f64 / n as f64;
-                                        Vector3::new(
-                                            c.center.x + c.radius * a.cos(),
-                                            c.center.y + c.radius * a.sin(),
-                                            c.center.z,
-                                        )
-                                    })
-                                    .collect(),
-                            );
-                        }
-                        _ => {}
+                            if pl.is_closed && pl.vertices.len() >= 3
+                    ) || matches!(e, acadrust::EntityType::Circle(_));
+                    if supported {
+                        let Some(curve) = crate::entities::curve::entity_curve(e) else {
+                            continue;
+                        };
+                        loops.push(
+                            crate::entities::curve::curve_points(&curve)
+                                .into_iter()
+                                .map(|point| Vector3::new(point[0], point[1], point[2]))
+                                .collect(),
+                        );
                     }
                 }
                 if loops.is_empty() {

src/app/model_ops.rs

@@ -258,31 +258,22 @@ impl super::OpenCADStudio {
     /// reusing the box primitive + the boolean union path.
     pub(super) fn solid_polysolid(&mut self, width: f64, height: f64) -> Task<Message> {
         let i = self.active_tab;
-        let found: Option<(Handle, Vec<[f64; 2]>, bool)> = self.tabs[i]
+        let found: Option<(Handle, Vec<[f64; 3]>)> = self.tabs[i]
             .scene
             .selected_entities()
             .iter()
             .filter(|(h, _)| !self.tabs[i].scene.is_layer_locked(*h))
             .find_map(|(h, e)| match e {
-                EntityType::LwPolyline(pl) => Some((
-                    *h,
-                    pl.vertices
-                        .iter()
-                        .map(|v| [v.location.x, v.location.y])
-                        .collect(),
-                    pl.is_closed,
-                )),
+                EntityType::LwPolyline(_) => crate::entities::curve::entity_curve(e)
+                    .map(|curve| (*h, crate::entities::curve::curve_points(&curve))),
                 _ => None,
             });
-        let Some((handle, pts, closed)) = found else {
+        let Some((handle, pts)) = found else {
             self.command_line
                 .push_error(crate::t!("POLYSOLID: select a polyline first.").as_ref());
             return Task::none();
         };
-        let mut segs: Vec<([f64; 2], [f64; 2])> = pts.windows(2).map(|w| (w[0], w[1])).collect();
-        if closed && pts.len() > 2 {
-            segs.push((pts[pts.len() - 1], pts[0]));
-        }
+        let segs: Vec<([f64; 3], [f64; 3])> = pts.windows(2).map(|w| (w[0], w[1])).collect();
         let mut acc: Option<Body> = None;
         let mut used = 0usize;
         for (a, b) in &segs {
@@ -302,7 +293,7 @@ impl super::OpenCADStudio {
                         [cos, sin, 0.0],
                         [-sin, cos, 0.0],
                         [0.0, 0.0, 1.0],
-                        [a[0], a[1], 0.0],
+                        [a[0], a[1], a[2]],
                     )
                 })
             else {
@@ -570,15 +561,22 @@ impl super::OpenCADStudio {
             .selected_entities()
             .iter()
             .filter(|(h, _)| !self.tabs[i].scene.is_layer_locked(*h))
-            .find_map(|(h, e)| match e {
-                EntityType::LwPolyline(pl) => Some((
+            .find_map(|(h, e)| {
+                let EntityType::LwPolyline(_) = e else {
+                    return None;
+                };
+                let curve = crate::entities::curve::entity_curve(e)?;
+                let cadkernel::geom2d::Curve::Polyline(polyline) = &curve.curve else {
+                    return None;
+                };
+                Some((
                     *h,
-                    pl.vertices
+                    polyline
+                        .vertices
                         .iter()
-                        .map(|v| [v.location.x, v.location.y, 0.0])
+                        .map(|vertex| curve.plane.point_at(vertex.position))
                         .collect(),
-                )),
-                _ => None,
+                ))
             });
         let Some((handle, fit)) = found else {
             self.command_line
@@ -595,7 +593,7 @@ impl super::OpenCADStudio {
         let p = |k: usize| glam::DVec3::new(fit[k][0], fit[k][1], fit[k][2]);
         // Catmull-Rom → cubic Bézier control points: [P0, b1,b2,P1, b1,b2,P2, …].
         let mut ctrl: Vec<Vector3> = Vec::with_capacity(3 * m + 1);
-        ctrl.push(Vector3::new(fit[0][0], fit[0][1], 0.0));
+        ctrl.push(Vector3::new(fit[0][0], fit[0][1], fit[0][2]));
         for seg in 0..m {
             let p0 = p(seg);
             let p1 = p(seg + 1);
@@ -603,9 +601,9 @@ impl super::OpenCADStudio {
             let next = if seg + 2 <= m { p(seg + 2) } else { p1 };
             let b1 = p0 + (p1 - prev) / 6.0;
             let b2 = p1 - (next - p0) / 6.0;
-            ctrl.push(Vector3::new(b1.x, b1.y, 0.0));
-            ctrl.push(Vector3::new(b2.x, b2.y, 0.0));
-            ctrl.push(Vector3::new(p1.x, p1.y, 0.0));
+            ctrl.push(Vector3::new(b1.x, b1.y, b1.z));
+            ctrl.push(Vector3::new(b2.x, b2.y, b2.z));
+            ctrl.push(Vector3::new(p1.x, p1.y, p1.z));
         }
         // Clamped piecewise-Bézier knots (degree 3): len == ctrl.len()+degree+1.
         let mut knots: Vec<f64> = vec![0.0; 4];
@@ -617,7 +615,10 @@ impl super::OpenCADStudio {
         spl.degree = 3;
         spl.control_points = ctrl;
         spl.knots = knots;
-        spl.fit_points = fit.iter().map(|q| Vector3::new(q[0], q[1], 0.0)).collect();
+        spl.fit_points = fit
+            .iter()
+            .map(|q| Vector3::new(q[0], q[1], q[2]))
+            .collect();
         // flags.rational defaults to false (non-rational) — exactly what we want.
         self.push_undo_snapshot(i, "SPLINEFIT");
         self.tabs[i].scene.erase_entities(&[handle]);

src/entities/curve.rs

@@ -352,6 +352,42 @@ pub fn entity_curve_xy(entity: &EntityType) -> Option<Curve> {
     })
 }
 
+/// Re-expresses an axis-aligned LWPOLYLINE in world XY coordinates.
+pub fn lwpolyline_world_xy(polyline: &LwPolylineEnt) -> Option<LwPolylineEnt> {
+    let normal = normalized(polyline.normal);
+    if normal.x.abs() > 1e-12 || normal.y.abs() > 1e-12 || normal.z.abs() <= 1e-12 {
+        return None;
+    }
+    let Curve::Polyline(curve) = entity_curve_xy(&EntityType::LwPolyline(polyline.clone()))?
+    else {
+        return None;
+    };
+    if curve.vertices.len() != polyline.vertices.len() {
+        return None;
+    }
+
+    let mut world = polyline.clone();
+    for (vertex, kernel) in world.vertices.iter_mut().zip(curve.vertices) {
+        vertex.location.x = kernel.position[0];
+        vertex.location.y = kernel.position[1];
+        vertex.bulge = kernel.bulge;
+    }
+    world.elevation = ocs_plane(polyline.normal, polyline.elevation).origin[2];
+    world.thickness *= normal.z;
+    world.normal = Vector3::new(0.0, 0.0, 1.0);
+    Some(world)
+}
+
+/// Normalizes only LWPOLYLINE entities; other types pass through unchanged.
+pub fn entity_with_lwpolyline_world_xy(entity: &EntityType) -> EntityType {
+    match entity {
+        EntityType::LwPolyline(polyline) => lwpolyline_world_xy(polyline)
+            .map(EntityType::LwPolyline)
+            .unwrap_or_else(|| entity.clone()),
+        _ => entity.clone(),
+    }
+}
+
 /// World-space wire points sampled by the kernel's angular policy.
 pub fn curve_points(curve: &PlanarCurve) -> Vec<[f64; 3]> {
     curve.tessellate_angle(cadkernel::tessellation::DEFAULT_ANGLE)

src/entities/lwpolyline.rs

@@ -1058,15 +1058,15 @@ impl crate::entities::traits::MassPropsCalc for acadrust::entities::LwPolyline {
             .expect("an LwPolyline with at least two vertices has a planar curve");
         let area = curve.curve.enclosed_area().abs();
         let perimeter = curve.length();
-        let (cx, cy) = curve
+        let center = curve
             .curve
             .enclosed_centroid()
-            .map(|point| (point[0], point[1]))
             .unwrap_or_else(|| {
                 let x = p.vertices.iter().map(|v| v.location.x).sum::<f64>() / n as f64;
                 let y = p.vertices.iter().map(|v| v.location.y).sum::<f64>() / n as f64;
-                (x, y)
+                [x, y]
             });
+        let [cx, cy, _] = curve.plane.point_at(center);
         crate::entities::traits::MassProps {
             area,
             perimeter,

src/modules/draw/modify/break_cmd.rs

@@ -41,7 +41,10 @@ pub fn break_entity(entity: &EntityType, p1: DVec3, p2: DVec3) -> Option<Vec<Ent
         EntityType::Line(line) => Some(break_line(line, p1, p2)),
         EntityType::Arc(arc) => Some(break_arc(arc, p1, p2)),
         EntityType::Circle(c) => Some(break_circle(c, p1, p2)),
-        EntityType::LwPolyline(p) => Some(break_lwpolyline(p, p1, p2)),
+        EntityType::LwPolyline(p) => {
+            let p = crate::entities::curve::lwpolyline_world_xy(p)?;
+            Some(break_lwpolyline(&p, p1, p2))
+        }
         EntityType::Ellipse(e) => Some(break_ellipse(e, p1, p2)),
         EntityType::Spline(s) => Some(break_spline(s, p1, p2)),
         _ => None,

src/modules/draw/modify/explode.rs

@@ -27,6 +27,7 @@ use acadrust::types::Vector3;
 use acadrust::{CadDocument, EntityType, Handle};
 
 use crate::command::{CadCommand, CmdResult};
+use crate::entities::curve::lwpolyline_world_xy;
 use crate::modules::{IconKind, ModuleEvent, ToolDef};
 use glam::DVec3;
 use crate::t;
@@ -188,6 +189,9 @@ pub fn normalize_entity_for_block(entity: EntityType) -> EntityType {
 }
 
 fn explode_lwpolyline(p: &LwPolyline) -> Vec<EntityType> {
+    let Some(p) = lwpolyline_world_xy(p) else {
+        return vec![];
+    };
     let n = p.vertices.len();
     if n < 2 {
         return vec![];

src/modules/draw/modify/fillet.rs

@@ -1012,6 +1012,10 @@ pub struct FilletCommand {
 
 impl FilletCommand {
     pub fn new(radius: f64, all_entities: Vec<EntityType>) -> Self {
+        let all_entities: Vec<EntityType> = all_entities
+            .iter()
+            .map(crate::entities::curve::entity_with_lwpolyline_world_xy)
+            .collect();
         let entity_index = ModifyEntityIndex::build(&all_entities);
         Self {
             radius: radius as f64,
@@ -1392,6 +1396,10 @@ pub struct ChamferCommand {
 
 impl ChamferCommand {
     pub fn new(dist: f64, all_entities: Vec<EntityType>) -> Self {
+        let all_entities: Vec<EntityType> = all_entities
+            .iter()
+            .map(crate::entities::curve::entity_with_lwpolyline_world_xy)
+            .collect();
         let entity_index = ModifyEntityIndex::build(&all_entities);
         Self {
             dist1: dist as f64,

src/modules/draw/modify/join.rs

@@ -123,6 +123,7 @@ fn segs_of(e: &EntityType) -> Option<Vec<Seg>> {
             }])
         }
         EntityType::LwPolyline(p) => {
+            let p = crate::entities::curve::lwpolyline_world_xy(p)?;
             if p.is_closed || p.vertices.len() < 2 {
                 return None;
             }

src/modules/draw/modify/lengthen.rs

@@ -158,7 +158,10 @@ pub fn lengthen_entity(entity: &EntityType, pick_pt: Vec3, mode: &LenMode) -> Op
         EntityType::Arc(a) => lengthen_arc(a, pick_pt, mode),
         EntityType::Ellipse(e) => lengthen_ellipse(e, pick_pt, mode),
         EntityType::Spline(s) => lengthen_spline(s, pick_pt, mode),
-        EntityType::LwPolyline(p) => lengthen_lwpoly(p, pick_pt, mode),
+        EntityType::LwPolyline(p) => {
+            let p = crate::entities::curve::lwpolyline_world_xy(p)?;
+            lengthen_lwpoly(&p, pick_pt, mode)
+        }
         _ => None,
     }
 }

src/modules/draw/modify/offset.rs

@@ -10,7 +10,7 @@
 //     3. Pick a point on the side to offset toward, or choose Multiple
 //        to keep offsetting the newly created result at the same distance
 
-use crate::entities::curve::entity_curve;
+use crate::entities::curve::{entity_curve, lwpolyline_world_xy};
 use crate::modules::draw::modify::spline_ops::spline_sample_xy;
 use acadrust::entities::LwVertex;
 use acadrust::entities::{
@@ -160,6 +160,9 @@ fn offset_arc(a: &ArcEnt, dist: f64, side_pt: Vec3) -> Option<EntityType> {
 /// offset passed to the algorithm is always ±1. This avoids fixed-epsilon
 /// failures on tiny drawings and on UTM-scale coordinates.
 fn offset_lwpolylines(p: &LwPolyline, dist: f64, side_pt: Vec3) -> Vec<EntityType> {
+    let Some(p) = lwpolyline_world_xy(p) else {
+        return Vec::new();
+    };
     let source = KernelPolyline {
         closed: p.is_closed,
         vertices: p

src/modules/draw/modify/trim.rs

@@ -35,7 +35,7 @@ use cadkernel::geom2d::{
     NurbsCurve, Ray as KernelRay, Tolerance as KernelTolerance, XLine as KernelXLine,
 };
 
-use crate::entities::curve::entity_curve_xy;
+use crate::entities::curve::{entity_curve_xy, entity_with_lwpolyline_world_xy};
 
 use crate::command::{CadCommand, CmdResult};
 use crate::modules::draw::modify::spline_ops::{
@@ -2171,6 +2171,10 @@ pub struct TrimCommand {
 
 impl TrimCommand {
     pub fn new(all_entities: Vec<EntityType>) -> Self {
+        let all_entities: Vec<EntityType> = all_entities
+            .iter()
+            .map(entity_with_lwpolyline_world_xy)
+            .collect();
         let entity_index = ModifyEntityIndex::build(&all_entities);
         let geos = build_geos(&all_entities);
         Self {
@@ -2907,6 +2911,10 @@ pub struct ExtendCommand {
 
 impl ExtendCommand {
     pub fn new(all_entities: Vec<EntityType>) -> Self {
+        let all_entities: Vec<EntityType> = all_entities
+            .iter()
+            .map(entity_with_lwpolyline_world_xy)
+            .collect();
         let entity_index = ModifyEntityIndex::build(&all_entities);
         let geos = build_geos(&all_entities);
         Self {
@@ -3832,6 +3840,10 @@ pub struct ExtrimCommand {
 
 impl ExtrimCommand {
     pub fn new(all: Vec<(Handle, EntityType)>) -> Self {
+        let all = all
+            .into_iter()
+            .map(|(handle, entity)| (handle, entity_with_lwpolyline_world_xy(&entity)))
+            .collect();
         Self { all, boundary: None, geos: Vec::new() }
     }
 }