Merge pull request #1070 from ramox81/codex/filletedge-parity

# Conflicts:
#	Cargo.lock

Cargo.lock

@@ -79,7 +79,7 @@ checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
 [[package]]
 name = "acadrust"
 version = "0.5.4"
-source = "git+https://git@github.com/HakanSeven12/cadcodec.git?rev=5b56571a190e7a17c8f12d36390d2938b0fb72f7#5b56571a190e7a17c8f12d36390d2938b0fb72f7"
+source = "git+https://github.com/HakanSeven12/cadcodec.git?rev=36152bc31e2df0136335e15b54e51c3c19349c63#36152bc31e2df0136335e15b54e51c3c19349c63"
 dependencies = [
  "ahash 0.8.12",
  "anyhow",
@@ -885,7 +885,7 @@ checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 [[package]]
 name = "cadkernel"
 version = "0.1.0"
-source = "git+https://github.com/ramox81/cadkernel.git?rev=f041b46431ac1e6fb38ae61d76bd7c2814b26164#f041b46431ac1e6fb38ae61d76bd7c2814b26164"
+source = "git+https://github.com/HakanSeven12/cadkernel.git?rev=37bdf263d85261982f6014b89262af2bf6eff144#37bdf263d85261982f6014b89262af2bf6eff144"
 dependencies = [
  "acadrust",
  "cavalier_contours",

Cargo.toml

@@ -31,8 +31,8 @@ glam = { version = "0.33", features = ["bytemuck"] }
 rfd = "0.17"
 clap = { version = "4", features = ["derive", "string"] }
 env_logger = "0.11"
-acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "5b56571a190e7a17c8f12d36390d2938b0fb72f7", features = ["serde"] }
-cadkernel = { git = "https://github.com/ramox81/cadkernel.git", rev = "f041b46431ac1e6fb38ae61d76bd7c2814b26164", features = ["acis", "offset"] }
+acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "36152bc31e2df0136335e15b54e51c3c19349c63", features = ["serde"] }
+cadkernel = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "37bdf263d85261982f6014b89262af2bf6eff144", features = ["acis", "offset"] }
 dwg-thumbnailer = { path = "crates/dwg-thumbnailer" }
 flate2 = "1"
 image = { version = "0.25", default-features = false, features = ["png", "jpeg", "bmp", "tiff"] }
@@ -73,10 +73,6 @@ objc2-foundation = { version = "0.2", features = ["NSArray", "NSURL", "NSString"
 iced_core = { git = "https://github.com/iced-rs/iced.git", rev = "23604ff22ab0aad9e00b9327cb7b8546ed84db39" }
 iced_widget = { git = "https://github.com/iced-rs/iced.git", rev = "23604ff22ab0aad9e00b9327cb7b8546ed84db39" }
 
-[patch."https://github.com/HakanSeven12/cadcodec.git"]
-acadrust = { git = "https://[email protected]/HakanSeven12/cadcodec.git", rev = "5b56571a190e7a17c8f12d36390d2938b0fb72f7" }
-
-
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 getrandom = "0.3"
 ocs_plugin_api = { path = "crates/ocs_plugin_api", features = ["host"] }

crates/ocs_doc_api/Cargo.toml

@@ -14,8 +14,8 @@ bincode = "1.3"
 thiserror = "1"
 
 # Host adapters convert ObjectId to acadrust handles; kernel handles stay local.
-acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "5b56571a190e7a17c8f12d36390d2938b0fb72f7", features = ["serde"], optional = true }
-cadkernel = { git = "https://github.com/ramox81/cadkernel.git", rev = "f041b46431ac1e6fb38ae61d76bd7c2814b26164", features = ["acis", "offset"], optional = true }
+acadrust = { git = "https://github.com/HakanSeven12/cadcodec.git", rev = "36152bc31e2df0136335e15b54e51c3c19349c63", features = ["serde"], optional = true }
+cadkernel = { git = "https://github.com/HakanSeven12/cadkernel.git", rev = "37bdf263d85261982f6014b89262af2bf6eff144", features = ["acis", "offset"], optional = true }
 ocs_plugin_api = { path = "../ocs_plugin_api", optional = true, features = ["host"] }
 
 [build-dependencies]

locales/en-US/opencadstudio.ftl

@@ -3220,6 +3220,17 @@ model =
     .cylinder-specify-axis-endpoint = CYLINDER  Specify axis endpoint:
     .elliptical = Elliptical
     .select-a-solid-edge = Select a solid edge:
+    .filletedge-select-edge-or-chain-loop-radius = Select an edge or [Chain/Loop/Radius]:
+    .filletedge-select-edge-chain-or-edge-radius = Select an edge chain or [Edge/Radius]:
+    .filletedge-select-loop-edge-or-edge-chain-radius = Select edge of loop or [Edge/Chain/Radius]:
+    .filletedge-enter-option-accept-next = Enter an option [Accept/Next] <Accept>:
+    .filletedge-accept-or-radius = Press Enter to accept the fillet or [Radius]:
+    .filletedge-enter-radius-or-expression = Enter fillet radius or [Expression] <__ocs_fmt_0__>:
+    .filletedge-specify-radius-or-expression = Specify Radius or [Expression] <__ocs_fmt_0__>:
+    .filletedge-enter-expression = Enter expression:
+    .filletedge-stale-edge = A selected edge no longer belongs to the solid.
+    .filletedge-history-create-failed = The solid history could not be created.
+    .filletedge-history-append-failed = The fillet history could not be recorded.
     .specify-fillet-radius = Specify fillet radius <__ocs_fmt_0__>:
     .specify-chamfer-distance = Specify chamfer distance <__ocs_fmt_0__>:
     .polysolid-height-width-justification = POLYSOLID  Height = __ocs_fmt_0__, Width = __ocs_fmt_1__, Justification = __ocs_fmt_2__

locales/tr-TR/opencadstudio.ftl

@@ -3179,6 +3179,17 @@ model =
     .cylinder-specify-axis-endpoint = CYLINDER  { common.specify }: { draw.axis-endpoint }:
     .elliptical = Eliptik
     .select-a-solid-edge = { draw.select }: { properties.solid } · { common.edge }:
+    .filletedge-select-edge-or-chain-loop-radius = Bir kenar seçin veya [Zincir/Döngü/Yarıçap]:
+    .filletedge-select-edge-chain-or-edge-radius = Bir kenar zinciri seçin veya [Kenar/Yarıçap]:
+    .filletedge-select-loop-edge-or-edge-chain-radius = Döngünün kenarını seçin veya [Kenar/Zincir/Yarıçap]:
+    .filletedge-enter-option-accept-next = Bir seçenek girin [Kabul/Sonraki] <Kabul>:
+    .filletedge-accept-or-radius = Fillet'i kabul etmek için Enter'a basın veya [Yarıçap]:
+    .filletedge-enter-radius-or-expression = Fillet yarıçapını girin veya [İfade] <__ocs_fmt_0__>:
+    .filletedge-specify-radius-or-expression = Yarıçapı belirtin veya [İfade] <__ocs_fmt_0__>:
+    .filletedge-enter-expression = İfadeyi girin:
+    .filletedge-stale-edge = Seçilen kenar artık katıya ait değil.
+    .filletedge-history-create-failed = Katı geçmişi oluşturulamadı.
+    .filletedge-history-append-failed = Fillet geçmişi kaydedilemedi.
     .specify-fillet-radius = { common.specify }: { common.fillet } · { common.radius } <__ocs_fmt_0__>:
     .specify-chamfer-distance = { common.specify }: { common.chamfer } · { common.distance } <__ocs_fmt_0__>:
     .polysolid-height-width-justification = POLYSOLID  { common.height } = __ocs_fmt_0__, { common.width } = __ocs_fmt_1__, { ui.justification } = __ocs_fmt_2__

src/app/command_driver.rs

@@ -733,6 +733,7 @@ impl OpenCADStudio {
             &result,
             CmdResult::Relaunch(..)
                 | CmdResult::Dispatch(..)
+                | CmdResult::SolidEdgeBlend { .. }
                 | CmdResult::SolidSubtract { .. }
                 | CmdResult::SliceEntities { .. }
                 | CmdResult::SliceSurfaceEntities { .. }
@@ -4105,11 +4106,20 @@ impl OpenCADStudio {
 
             CmdResult::SolidEdgeBlend {
                 handle,
-                pick,
+                edges,
+                base_face,
                 value,
+                other_value,
                 fillet,
             } => {
-                let task = self.solid_edge_blend(handle, pick, value, fillet);
+                let task = self.solid_edge_blend(
+                    handle,
+                    &edges,
+                    base_face,
+                    value,
+                    other_value,
+                    fillet,
+                );
                 self.tabs[i].active_cmd = None;
                 self.tabs[i].snap_result = None;
                 self.tabs[i].scene.clear_preview_wire();

src/app/commands/dim.rs

@@ -1,6 +1,6 @@
 use super::*;
 
-fn selected_solid(app: &OpenCADStudio, tab: usize) -> Option<acadrust::Handle> {
+fn selected_edge_body(app: &OpenCADStudio, tab: usize) -> Option<acadrust::Handle> {
     let scene = &app.tabs.get(tab)?.scene;
     let selected = scene.selected_handles_in_order();
     let [handle] = selected.as_slice() else {
@@ -9,7 +9,7 @@ fn selected_solid(app: &OpenCADStudio, tab: usize) -> Option<acadrust::Handle> {
 
     if matches!(
         scene.document.get_entity(*handle),
-        Some(acadrust::EntityType::Solid3D(_))
+        Some(acadrust::EntityType::Solid3D(_) | acadrust::EntityType::Surface(_))
     ) {
         Some(*handle)
     } else {
@@ -17,6 +17,36 @@ fn selected_solid(app: &OpenCADStudio, tab: usize) -> Option<acadrust::Handle> {
     }
 }
 
+fn solid_edge_sources(
+    app: &mut OpenCADStudio,
+    tab: usize,
+) -> Vec<(acadrust::Handle, cadkernel::brep::Body)> {
+    let handles = app.tabs[tab]
+        .scene
+        .document
+        .entities()
+        .filter_map(|entity| {
+            matches!(
+                entity,
+                acadrust::EntityType::Solid3D(_) | acadrust::EntityType::Surface(_)
+            )
+                .then_some(entity.common().handle)
+        })
+        .collect::<Vec<_>>();
+    app.tabs[tab].scene.restore_solid_models(&handles);
+    handles
+        .into_iter()
+        .filter_map(|handle| {
+            app.tabs[tab]
+                .scene
+                .solid_models
+                .get(&handle)
+                .cloned()
+                .map(|body| (handle, body))
+        })
+        .collect()
+}
+
 impl OpenCADStudio {
     pub(super) fn dispatch_dim(&mut self, cmd: &str, i: usize) -> Option<Task<Message>> {
         match cmd {
@@ -960,16 +990,30 @@ impl OpenCADStudio {
                 self.tabs[i].active_cmd = Some(Box::new(new_cmd));
             }
 
-            "SOLIDFILLET" => {
+            "FILLETEDGE" | "SOLIDFILLET" => {
                 use crate::modules::model::edge_cmd::{EdgeOperation, SolidEdgeCommand};
-                let command = SolidEdgeCommand::new(EdgeOperation::Fillet, selected_solid(self, i));
+                let target = selected_edge_body(self, i);
+                let bodies = solid_edge_sources(self, i);
+                let command = SolidEdgeCommand::new(
+                    EdgeOperation::Fillet,
+                    target,
+                    bodies,
+                    crate::scene::WireModel::SELECTED,
+                );
                 self.command_line.push_info(&command.prompt());
                 self.tabs[i].active_cmd = Some(Box::new(command));
             }
 
-            "FILLET" if selected_solid(self, i).is_some() => {
+            "FILLET" if selected_edge_body(self, i).is_some() => {
                 use crate::modules::model::edge_cmd::{EdgeOperation, SolidEdgeCommand};
-                let command = SolidEdgeCommand::new(EdgeOperation::Fillet, selected_solid(self, i));
+                let target = selected_edge_body(self, i);
+                let bodies = solid_edge_sources(self, i);
+                let command = SolidEdgeCommand::new(
+                    EdgeOperation::Fillet,
+                    target,
+                    bodies,
+                    crate::scene::WireModel::SELECTED,
+                );
                 self.command_line.push_info(&command.prompt());
                 self.tabs[i].active_cmd = Some(Box::new(command));
             }
@@ -1107,16 +1151,52 @@ impl OpenCADStudio {
                 }
             }
 
-            "SOLIDCHAMFER" => {
-                use crate::modules::model::edge_cmd::{EdgeOperation, SolidEdgeCommand};
-                let command = SolidEdgeCommand::new(EdgeOperation::Chamfer, selected_solid(self, i));
+            "CHAMFEREDGE" | "SOLIDCHAMFER" => {
+                use crate::modules::model::edge_cmd::SolidEdgeCommand;
+                let target = selected_edge_body(self, i);
+                let header = &self.tabs[i].scene.document.header;
+                let distances = (header.chamfer_distance_a, header.chamfer_distance_b);
+                let bodies = solid_edge_sources(self, i);
+                let command = SolidEdgeCommand::new_chamfer(
+                    target,
+                    bodies,
+                    crate::scene::WireModel::SELECTED,
+                    distances,
+                );
+                let distances = command.chamfer_distances();
+                self.command_line.push_output(
+                    crate::tf!(
+                        "Distance1 = {:.4}, Distance2 = {:.4}",
+                        distances.0,
+                        distances.1
+                    )
+                    .as_ref(),
+                );
                 self.command_line.push_info(&command.prompt());
                 self.tabs[i].active_cmd = Some(Box::new(command));
             }
 
-            "CHAMFER" if selected_solid(self, i).is_some() => {
-                use crate::modules::model::edge_cmd::{EdgeOperation, SolidEdgeCommand};
-                let command = SolidEdgeCommand::new(EdgeOperation::Chamfer, selected_solid(self, i));
+            "CHAMFER" if selected_edge_body(self, i).is_some() => {
+                use crate::modules::model::edge_cmd::SolidEdgeCommand;
+                let target = selected_edge_body(self, i);
+                let header = &self.tabs[i].scene.document.header;
+                let distances = (header.chamfer_distance_a, header.chamfer_distance_b);
+                let bodies = solid_edge_sources(self, i);
+                let command = SolidEdgeCommand::new_chamfer(
+                    target,
+                    bodies,
+                    crate::scene::WireModel::SELECTED,
+                    distances,
+                );
+                let distances = command.chamfer_distances();
+                self.command_line.push_output(
+                    crate::tf!(
+                        "Distance1 = {:.4}, Distance2 = {:.4}",
+                        distances.0,
+                        distances.1
+                    )
+                    .as_ref(),
+                );
                 self.command_line.push_info(&command.prompt());
                 self.tabs[i].active_cmd = Some(Box::new(command));
             }

src/app/commands/fileops.rs

@@ -335,9 +335,9 @@ impl OpenCADStudio {
             "PERSP" => return Some(Task::done(Message::SetProjection(false))),
             "LAYERS" => return Some(Task::done(Message::ToggleLayers)),
 
-            // SCRIPT <path> — run a command script: each non-blank, non-comment
+            // SCRIPT <path> — run a command script: each non-comment
             // line is fed through the same command path the `--script` startup
-            // flag uses, so the behaviour matches headless automation exactly.
+            // flag uses. Blank rows submit Enter to the active command.
             "SCRIPT" | "SCR" => {
                 use crate::command::ValuePromptCommand;
                 let c = ValuePromptCommand::new("SCRIPT", "SCRIPT  path to the .scr file:");
@@ -352,10 +352,8 @@ impl OpenCADStudio {
                             let cmds: Vec<Task<Message>> = text
                                 .lines()
                                 .map(str::trim)
-                                .filter(|l| {
-                                    !l.is_empty() && !l.starts_with('#') && !l.starts_with(';')
-                                })
-                                .map(|l| Task::done(Message::Command(l.to_string())))
+                                .filter(|l| !l.starts_with('#') && !l.starts_with(';'))
+                                .map(|l| Task::done(Message::ScriptLine(l.to_string())))
                                 .collect();
                             self.command_line.push_output(crate::tf!(
                                 "SCRIPT: running {} command(s) from {p}.",

src/app/mod.rs

@@ -2117,6 +2117,10 @@ pub enum Message {
     CommandInput(String),
     CommandSubmit,
     Command(String),
+    /// Execute one complete line read from a command script. Unlike UI/ribbon
+    /// dispatch, this accepts an interactive verb and all of its arguments on
+    /// the same line (`BOX 0,0,0 10,10,0 10`).
+    ScriptLine(String),
     /// Append one typed character to the command-line input from the
     /// global key-press subscription. Used when the text-input widget
     /// itself isn't focused (focus parked on viewport / button / etc.)
@@ -3832,7 +3836,7 @@ impl OpenCADStudio {
             Task::batch(
                 cfg.script_lines
                     .into_iter()
-                    .map(|line| Task::done(Message::Command(line))),
+                    .map(|line| Task::done(Message::ScriptLine(line))),
             )
         };
         s.queue_startup_prompts();

src/app/model_ops.rs

@@ -7,7 +7,7 @@ use acadrust::{
     objects::SolidHistoryOperation,
     EntityType, Handle,
 };
-use cadkernel::brep::Body;
+use cadkernel::brep::{Body, EdgeKey, FaceKey};
 use iced::Task;
 use std::collections::HashMap;
 
@@ -273,6 +273,29 @@ fn entity_with_boolean_body(mut source: EntityType, body: &Body) -> Option<Entit
     Some(source)
 }
 
+fn entity_with_history_body(mut source: EntityType, body: &Body) -> Option<EntityType> {
+    let document = crate::scene::convert::acis_export::solid_to_sat(body)?;
+    let wires = solid_model::edge_wires(body);
+    match &mut source {
+        EntityType::Solid3D(entity) => {
+            entity.wires = wires;
+            entity.silhouettes.clear();
+            entity.set_sat_document(&document);
+        }
+        EntityType::Surface(entity) => {
+            entity.wires = wires;
+            entity.silhouettes.clear();
+            if entity.kind != SurfaceKind::Plane {
+                entity.kind = SurfaceKind::Generic;
+                entity.surface_data = SurfaceData::Generic;
+            }
+            entity.acis_data = AcisData::from_sat(&document.to_sat_string());
+        }
+        _ => return None,
+    }
+    Some(source)
+}
+
 enum IntersectBodyOutcome {
     Area(Body),
     Touching,
@@ -580,44 +603,169 @@ impl super::OpenCADStudio {
         groups
     }
 
-    fn replace_solid_body(&mut self, handle: Handle, result: Body, label: &str) -> bool {
+    fn replace_solid_body_with_fillet(
+        &mut self,
+        handle: Handle,
+        source: &Body,
+        result: Body,
+        edges: &[EdgeKey],
+        radius: f64,
+    ) -> bool {
         let i = self.active_tab;
-        let Some(document) =
-            crate::scene::convert::acis_export::solid_to_sat(&result)
-        else {
-            self.command_line
-                .push_error(crate::t!("The result could not be encoded as ACIS.").as_ref());
-            return false;
-        };
-        let Some(EntityType::Solid3D(mut entity)) =
-            self.tabs[i].scene.document.get_entity(handle).cloned()
-        else {
-            return false;
-        };
-        entity.wires = solid_model::edge_wires(&result);
-        entity.silhouettes.clear();
-        entity.history_handle = None;
-        entity.set_sat_document(&document);
-
-        let Some(display) = self.tabs[i].scene.prepare_solid_model_display(handle, &result)
+        let Some(display) = self.tabs[i]
+            .scene
+            .prepare_solid_model_display(handle, &result)
             .filter(|display| display.0.complete)
         else {
-            self.command_line.push_error(crate::t!("The result could not be displayed completely. The original solid was retained.").as_ref());
+            self.command_line.push_error(crate::t!("The result could not be displayed completely. The original edge body was retained.").as_ref());
             return false;
         };
-        self.push_undo_snapshot(i, label);
-        self.tabs[i].scene.delete_solid_history(handle);
-        if !self.tabs[i]
-            .scene
-            .update_entity(EntityType::Solid3D(entity))
+        let ordered = source.edge_keys().collect::<Vec<_>>();
+        let Some(history_edges) = edges
+            .iter()
+            .map(|edge| {
+                ordered
+                    .iter()
+                    .position(|candidate| candidate == edge)
+                    .and_then(|ordinal| i32::try_from(ordinal).ok())
+            })
+            .collect::<Option<Vec<_>>>()
+        else {
+            self.command_line
+                .push_error(crate::t!("A selected edge no longer belongs to the body.").as_ref());
+            return false;
+        };
+
+        self.push_undo_snapshot(i, "FILLETEDGE");
+        if self.tabs[i].scene.document.solid_history_graph(handle).is_none()
+            && !self.tabs[i]
+                .scene
+                .create_solid_history(handle, solid_history::brep_op(source))
         {
             self.command_line
-                .push_error(crate::t!("The solid could not be updated.").as_ref());
+                .push_error(crate::t!("The edge body history could not be created.").as_ref());
             return false;
         }
-        let history = solid_history::brep_op(&result);
-        self.tabs[i].scene.create_solid_history(handle, history);
-        self.tabs[i].scene.register_prepared_solid_model(handle, result, display);
+        if !self.tabs[i].scene.append_solid_history(
+            handle,
+            solid_history::fillet_op(history_edges, radius),
+        ) {
+            self.command_line
+                .push_error(crate::t!("The fillet history could not be recorded.").as_ref());
+            return false;
+        }
+        let _ = self.tabs[i].scene.apply_solid_history_choice(
+            handle,
+            solid_history::PROP_HISTORY,
+            "Record",
+        );
+        let Some(entity) = self.tabs[i].scene.document.get_entity(handle).cloned() else {
+            return false;
+        };
+        let Some(entity) = entity_with_history_body(entity, &result) else {
+            return false;
+        };
+        if !self.tabs[i].scene.update_entity(entity) {
+            self.command_line
+                .push_error(crate::t!("The edge body could not be updated.").as_ref());
+            return false;
+        }
+        self.tabs[i]
+            .scene
+            .register_prepared_solid_model(handle, result, display);
+        self.tabs[i].scene.deselect_all();
+        self.tabs[i].scene.select_entity(handle, false);
+        self.tabs[i].dirty = true;
+        self.refresh_properties();
+        true
+    }
+
+    fn replace_edge_body_with_chamfer(
+        &mut self,
+        handle: Handle,
+        source: &Body,
+        result: Body,
+        edges: &[EdgeKey],
+        base_face: FaceKey,
+        base_distance: f64,
+        other_distance: f64,
+    ) -> bool {
+        let i = self.active_tab;
+        let Some(display) = self.tabs[i]
+            .scene
+            .prepare_solid_model_display(handle, &result)
+            .filter(|display| display.0.complete)
+        else {
+            self.command_line.push_error(crate::t!("The result could not be displayed completely. The original edge body was retained.").as_ref());
+            return false;
+        };
+        let ordered_edges = source.edge_keys().collect::<Vec<_>>();
+        let Some(history_edges) = edges
+            .iter()
+            .map(|edge| {
+                ordered_edges
+                    .iter()
+                    .position(|candidate| candidate == edge)
+                    .and_then(|ordinal| i32::try_from(ordinal).ok())
+            })
+            .collect::<Option<Vec<_>>>()
+        else {
+            self.command_line
+                .push_error(crate::t!("A selected edge no longer belongs to the body.").as_ref());
+            return false;
+        };
+        let Some(history_face) = source
+            .face_keys()
+            .position(|candidate| candidate == base_face)
+            .and_then(|ordinal| i32::try_from(ordinal).ok())
+        else {
+            self.command_line
+                .push_error(crate::t!("The selected base face no longer belongs to the body.").as_ref());
+            return false;
+        };
+
+        self.push_undo_snapshot(i, "CHAMFEREDGE");
+        if self.tabs[i].scene.document.solid_history_graph(handle).is_none()
+            && !self.tabs[i]
+                .scene
+                .create_solid_history(handle, solid_history::brep_op(source))
+        {
+            self.command_line
+                .push_error(crate::t!("The edge body history could not be created.").as_ref());
+            return false;
+        }
+        if !self.tabs[i].scene.append_solid_history(
+            handle,
+            solid_history::chamfer_op(
+                history_edges,
+                history_face,
+                base_distance,
+                other_distance,
+            ),
+        ) {
+            self.command_line
+                .push_error(crate::t!("The chamfer history could not be recorded.").as_ref());
+            return false;
+        }
+        let _ = self.tabs[i].scene.apply_solid_history_choice(
+            handle,
+            solid_history::PROP_HISTORY,
+            "Record",
+        );
+        let Some(entity) = self.tabs[i].scene.document.get_entity(handle).cloned() else {
+            return false;
+        };
+        let Some(entity) = entity_with_history_body(entity, &result) else {
+            return false;
+        };
+        if !self.tabs[i].scene.update_entity(entity) {
+            self.command_line
+                .push_error(crate::t!("The edge body could not be updated.").as_ref());
+            return false;
+        }
+        self.tabs[i]
+            .scene
+            .register_prepared_solid_model(handle, result, display);
         self.tabs[i].scene.deselect_all();
         self.tabs[i].scene.select_entity(handle, false);
         self.tabs[i].dirty = true;
@@ -628,20 +776,21 @@ impl super::OpenCADStudio {
     pub(super) fn solid_edge_blend(
         &mut self,
         handle: Handle,
-        pick: glam::DVec3,
+        edges: &[EdgeKey],
+        base_face: Option<FaceKey>,
         value: f64,
+        other_value: f64,
         fillet: bool,
     ) -> Task<Message> {
         let i = self.active_tab;
         if self.reject_locked_edit(i, handle) {
             return Task::none();
         }
-        if !matches!(
-            self.tabs[i].scene.document.get_entity(handle),
-            Some(EntityType::Solid3D(_))
-        ) {
+        if !matches!(self.tabs[i].scene.document.get_entity(handle), Some(
+            EntityType::Solid3D(_) | EntityType::Surface(_)
+        )) {
             self.command_line
-                .push_error(crate::t!("Select a 3D solid edge.").as_ref());
+                .push_error(crate::t!("Select a 3D solid or surface edge.").as_ref());
             return Task::none();
         }
         self.tabs[i].scene.restore_solid_models(&[handle]);
@@ -650,15 +799,35 @@ impl super::OpenCADStudio {
                 .push_error(crate::t!("The solid geometry could not be restored.").as_ref());
             return Task::none();
         };
-        let Some(edge) = solid_model::nearest_edge(&body, pick.to_array()) else {
-            self.command_line
-                .push_error(crate::t!("Select a solid edge.").as_ref());
-            return Task::none();
-        };
         let result = if fillet {
-            cadkernel::brep::fillet(&body, edge, value)
+            match cadkernel::brep::fillet_edges(&body, edges, value) {
+                Ok(result) => Some(result),
+                Err(error) => {
+                    self.command_line
+                        .push_error(&format!("FILLETEDGE: {error}"));
+                    return Task::none();
+                }
+            }
         } else {
-            cadkernel::brep::chamfer(&body, edge, value)
+            let Some(base_face) = base_face else {
+                self.command_line
+                    .push_error(crate::t!("CHAMFEREDGE: select a base face edge.").as_ref());
+                return Task::none();
+            };
+            match cadkernel::brep::chamfer_edges(
+                &body,
+                edges,
+                base_face,
+                value,
+                other_value,
+            ) {
+                Ok(result) => Some(result),
+                Err(error) => {
+                    self.command_line
+                        .push_error(&format!("CHAMFEREDGE: {error}"));
+                    return Task::none();
+                }
+            }
         };
         let Some(result) = result else {
             self.command_line.push_error(
@@ -667,8 +836,25 @@ impl super::OpenCADStudio {
             );
             return Task::none();
         };
-        let label = if fillet { "SOLIDFILLET" } else { "SOLIDCHAMFER" };
-        if self.replace_solid_body(handle, result, label) {
+        let label = if fillet { "FILLETEDGE" } else { "CHAMFEREDGE" };
+        let updated = if fillet {
+            self.replace_solid_body_with_fillet(handle, &body, result, edges, value)
+        } else {
+            self.replace_edge_body_with_chamfer(
+                handle,
+                &body,
+                result,
+                edges,
+                base_face.expect("checked chamfer face"),
+                value,
+                other_value,
+            )
+        };
+        if updated {
+            if !fillet {
+                self.tabs[i].scene.document.header.chamfer_distance_a = value;
+                self.tabs[i].scene.document.header.chamfer_distance_b = other_value;
+            }
             self.command_line
                 .push_output(crate::tf!("{label}: solid updated.").as_ref());
         }

src/app/update/dynamic.rs

@@ -740,6 +740,14 @@ impl OpenCADStudio {
             .as_mut()
             .map(|c| c.on_preview_wires(cur))
             .unwrap_or_default();
+        let preview_hidden = self.tabs[i]
+            .active_cmd
+            .as_ref()
+            .map(|command| command.preview_hidden_handles().to_vec())
+            .unwrap_or_default();
+        self.tabs[i]
+            .scene
+            .set_command_preview_hidden(&preview_hidden);
         self.tabs[i].scene.set_preview_wires(previews);
     }
 }

src/app/update/mod.rs

@@ -1969,6 +1969,14 @@ impl OpenCADStudio {
                 self.dispatch_command(&cmd)
             }
 
+            Message::ScriptLine(line) => {
+                if line.trim().is_empty() {
+                    self.feed_command(crate::command::StepInput::Enter)
+                } else {
+                    self.run_command_line(&line)
+                }
+            }
+
             Message::ToggleLayers => {
                 if self.active_modal == Some(super::ModalKind::Layers) {
                     self.ribbon.deactivate_tool_if("LAYERS");

src/app/update/viewport.rs

@@ -2468,6 +2468,14 @@ impl OpenCADStudio {
                     previews.push(guide);
                 }
             }
+            let preview_hidden = self.tabs[i]
+                .active_cmd
+                .as_ref()
+                .map(|command| command.preview_hidden_handles().to_vec())
+                .unwrap_or_default();
+            self.tabs[i]
+                .scene
+                .set_command_preview_hidden(&preview_hidden);
             self.tabs[i].scene.set_preview_wires(previews);
         } else {
             self.tabs[i].snap_result = None;

src/command.rs

@@ -1547,11 +1547,13 @@ pub enum CmdResult {
         options: LoftOptions,
         color: [f32; 4],
     },
-    /// Round or bevel the straight edge nearest `pick` on a solid.
+    /// Round or bevel one or more resolved B-rep edges on a solid.
     SolidEdgeBlend {
         handle: Handle,
-        pick: DVec3,
+        edges: Vec<cadkernel::brep::EdgeKey>,
+        base_face: Option<cadkernel::brep::FaceKey>,
         value: f64,
+        other_value: f64,
         fillet: bool,
     },
     SolidSubtract {

src/locale_catalog.rs

@@ -3904,8 +3904,19 @@ pub(super) fn message_attribute(source: &str) -> Option<(&'static str, &'static
         "CYLINDER  Specify axis endpoint:" => Some(("model", "cylinder-specify-axis-endpoint")),
         "Elliptical" => Some(("model", "elliptical")),
         "Select a solid edge:" => Some(("model", "select-a-solid-edge")),
+        "Select an edge or [Chain/Loop/Radius]:" => Some(("model", "filletedge-select-edge-or-chain-loop-radius")),
+        "Select an edge chain or [Edge/Radius]:" => Some(("model", "filletedge-select-edge-chain-or-edge-radius")),
+        "Select edge of loop or [Edge/Chain/Radius]:" => Some(("model", "filletedge-select-loop-edge-or-edge-chain-radius")),
+        "Enter an option [Accept/Next] <Accept>:" => Some(("model", "filletedge-enter-option-accept-next")),
+        "Press Enter to accept the fillet or [Radius]:" => Some(("model", "filletedge-accept-or-radius")),
+        "Enter fillet radius or [Expression] <{:.4}>:" => Some(("model", "filletedge-enter-radius-or-expression")),
+        "Specify Radius or [Expression] <{:.4}>:" => Some(("model", "filletedge-specify-radius-or-expression")),
+        "Enter expression:" => Some(("model", "filletedge-enter-expression")),
         "Specify fillet radius <{:.3}>:" => Some(("model", "specify-fillet-radius")),
         "Specify chamfer distance <{:.3}>:" => Some(("model", "specify-chamfer-distance")),
+        "A selected edge no longer belongs to the solid." => Some(("model", "filletedge-stale-edge")),
+        "The solid history could not be created." => Some(("model", "filletedge-history-create-failed")),
+        "The fillet history could not be recorded." => Some(("model", "filletedge-history-append-failed")),
         "POLYSOLID  Height = {:.4}, Width = {:.4}, Justification = {}\n{}" => Some(("model", "polysolid-height-width-justification")),
         "Specify start point or [Object/Height/Width/Justify] <Object>:" => Some(("model", "specify-start-point-or-object-height-width-justify-object")),
         "Specify height <{:.4}>:" => Some(("model", "specify-height")),

src/main.rs

@@ -134,7 +134,9 @@ fn main() -> iced::Result {
                 Ok(text) => text
                     .lines()
                     .map(str::trim)
-                    .filter(|l| !l.is_empty() && !l.starts_with('#'))
+                    // Blank script rows are significant: they submit Enter to
+                    // the active command (for example, accepting a preview).
+                    .filter(|l| !l.starts_with('#') && !l.starts_with(';'))
                     .map(str::to_string)
                     .collect(),
                 Err(e) => {

src/modules/model/edge_cmd.rs

@@ -1,42 +1,311 @@
+use std::sync::atomic::{AtomicU64, Ordering};
+
 use acadrust::Handle;
+use cadkernel::brep::{Body, EdgeKey, FaceKey};
 use glam::DVec3;
 
 use crate::command::{
-    CadCommand, CmdResult, DynAnchor, DynFieldSpec, DynGuide, DynRole, DynSpec,
+    CadCommand, CmdOption, CmdResult, DynAnchor, DynFieldSpec, DynGuide, DynRole, DynSpec,
 };
+use crate::scene::model::wire_model::WireModel;
 
-#[derive(Clone, Copy)]
+static FILLET_RADIUS_BITS: AtomicU64 = AtomicU64::new(1.0f64.to_bits());
+
+fn fillet_radius() -> f64 {
+    f64::from_bits(FILLET_RADIUS_BITS.load(Ordering::Relaxed))
+}
+
+fn set_fillet_radius(value: f64) {
+    FILLET_RADIUS_BITS.store(value.to_bits(), Ordering::Relaxed);
+}
+
+#[derive(Clone, Copy, PartialEq, Eq)]
 pub enum EdgeOperation {
     Fillet,
     Chamfer,
 }
 
+#[derive(Clone, Copy, PartialEq, Eq)]
+enum EdgeSelectionMode {
+    Edge,
+    Chain,
+}
+
+#[derive(Clone, Copy, PartialEq, Eq)]
+enum EdgeStep {
+    Selecting,
+    PickingLoop,
+    LoopConfirm,
+    PreviewConfirm,
+    Radius,
+    Expression,
+    ChamferDistance1,
+    ChamferDistance2,
+}
+
 pub struct SolidEdgeCommand {
     operation: EdgeOperation,
     target: Option<Handle>,
-    picked: Option<(Handle, DVec3)>,
+    bodies: Vec<(Handle, Body)>,
+    handle: Option<Handle>,
+    selected_edges: Vec<EdgeKey>,
+    base_face: Option<FaceKey>,
+    selection_batches: Vec<(Vec<EdgeKey>, DVec3)>,
+    selection_mode: EdgeSelectionMode,
+    step: EdgeStep,
+    value_return: EdgeStep,
+    expression_return: EdgeStep,
+    loop_candidates: Vec<(FaceKey, Vec<EdgeKey>)>,
+    loop_index: usize,
+    last_pick: Option<DVec3>,
     default_value: f64,
+    other_value: f64,
+    preview_color: [f32; 4],
+    preview_wires: Vec<WireModel>,
+    preview_hidden: Vec<Handle>,
 }
 
 impl SolidEdgeCommand {
-    pub fn new(operation: EdgeOperation, target: Option<Handle>) -> Self {
+    pub fn new(
+        operation: EdgeOperation,
+        target: Option<Handle>,
+        bodies: Vec<(Handle, Body)>,
+        preview_color: [f32; 4],
+    ) -> Self {
         Self {
             operation,
             target,
-            picked: None,
-            default_value: 1.0,
+            bodies,
+            handle: None,
+            selected_edges: Vec::new(),
+            base_face: None,
+            selection_batches: Vec::new(),
+            selection_mode: EdgeSelectionMode::Edge,
+            step: EdgeStep::Selecting,
+            value_return: EdgeStep::Selecting,
+            expression_return: EdgeStep::Radius,
+            loop_candidates: Vec::new(),
+            loop_index: 0,
+            last_pick: None,
+            default_value: if operation == EdgeOperation::Fillet {
+                fillet_radius()
+            } else {
+                1.0
+            },
+            other_value: 1.0,
+            preview_color,
+            preview_wires: Vec::new(),
+            preview_hidden: Vec::new(),
         }
     }
 
-    fn finish(&self, value: f64) -> CmdResult {
-        let Some((handle, pick)) = self.picked else {
+    pub fn new_chamfer(
+        target: Option<Handle>,
+        bodies: Vec<(Handle, Body)>,
+        preview_color: [f32; 4],
+        distances: (f64, f64),
+    ) -> Self {
+        let mut command = Self::new(EdgeOperation::Chamfer, target, bodies, preview_color);
+        command.default_value = positive_default(distances.0);
+        command.other_value = positive_default(distances.1);
+        command
+    }
+
+    pub fn chamfer_distances(&self) -> (f64, f64) {
+        (self.default_value, self.other_value)
+    }
+
+    fn body(&self, handle: Handle) -> Option<&Body> {
+        self.bodies
+            .iter()
+            .find_map(|(candidate, body)| (*candidate == handle).then_some(body))
+    }
+
+    fn active_body(&self) -> Option<(Handle, &Body)> {
+        let handle = self.handle?;
+        self.body(handle).map(|body| (handle, body))
+    }
+
+    fn pick_allowed(&self, handle: Handle) -> bool {
+        !handle.is_null()
+            && self.target.is_none_or(|target| target == handle)
+            && self.handle.is_none_or(|selected| selected == handle)
+            && self.body(handle).is_some()
+    }
+
+    fn add_batch(&mut self, edges: Vec<EdgeKey>, anchor: DVec3) -> bool {
+        let batch = edges
+            .into_iter()
+            .filter(|edge| !self.selected_edges.contains(edge))
+            .collect::<Vec<_>>();
+        if batch.is_empty() {
+            return false;
+        }
+        self.selected_edges.extend(batch.iter().copied());
+        self.selection_batches.push((batch, anchor));
+        true
+    }
+
+    fn current_loop(&self) -> Option<&[EdgeKey]> {
+        self.loop_candidates
+            .get(self.loop_index)
+            .map(|(_, edges)| edges.as_slice())
+    }
+
+    fn current_loop_face(&self) -> Option<FaceKey> {
+        self.loop_candidates
+            .get(self.loop_index)
+            .map(|(face, _)| *face)
+    }
+
+    fn preview_edges(&self) -> Vec<EdgeKey> {
+        let mut edges = self.selected_edges.clone();
+        if self.step == EdgeStep::LoopConfirm {
+            if let Some(loop_edges) = self.current_loop() {
+                for edge in loop_edges {
+                    if !edges.contains(edge) {
+                        edges.push(*edge);
+                    }
+                }
+            }
+        }
+        edges
+    }
+
+    fn preview_active(&self) -> bool {
+        matches!(
+            self.step,
+            EdgeStep::Selecting
+                | EdgeStep::PickingLoop
+                | EdgeStep::LoopConfirm
+                | EdgeStep::PreviewConfirm
+                | EdgeStep::Radius
+                | EdgeStep::Expression
+                | EdgeStep::ChamferDistance1
+                | EdgeStep::ChamferDistance2
+        )
+    }
+
+    fn preview_for_values(
+        &self,
+        value: f64,
+        other_value: f64,
+    ) -> Option<(Handle, Vec<WireModel>)> {
+        if !self.preview_active() {
+            return None;
+        }
+        let edges = self.preview_edges();
+        if edges.is_empty() {
+            return None;
+        }
+        let (handle, body) = self.active_body()?;
+        let result = match self.operation {
+            EdgeOperation::Fillet => cadkernel::brep::fillet_edges(body, &edges, value).ok()?,
+            EdgeOperation::Chamfer => cadkernel::brep::chamfer_edges(
+                body,
+                &edges,
+                self.base_face.or_else(|| self.current_loop_face())?,
+                value,
+                other_value,
+            )
+            .ok()?,
+        };
+        let mut wires = crate::scene::model::solid_model::grip_preview_wires(&result, handle);
+        for wire in &mut wires {
+            wire.color = self.preview_color;
+            wire.name = format!("{}-{}-PREVIEW", handle.value(), self.name());
+        }
+        (!wires.is_empty()).then_some((handle, wires))
+    }
+
+    fn rebuild_preview(&mut self) {
+        self.preview_wires.clear();
+        self.preview_hidden.clear();
+        if let Some((handle, wires)) =
+            self.preview_for_values(self.default_value, self.other_value)
+        {
+            self.preview_wires = wires;
+            self.preview_hidden.push(handle);
+        }
+    }
+
+    fn begin_radius(&mut self, return_to: EdgeStep) -> CmdResult {
+        self.value_return = return_to;
+        self.step = EdgeStep::Radius;
+        self.rebuild_preview();
+        CmdResult::NeedPoint
+    }
+
+    fn accept_radius(&mut self, value: f64) -> Option<CmdResult> {
+        if value <= 0.0 || !value.is_finite() {
+            return None;
+        }
+        self.default_value = value;
+        if self.operation == EdgeOperation::Fillet {
+            set_fillet_radius(value);
+        }
+        self.step = self.value_return;
+        self.rebuild_preview();
+        Some(CmdResult::NeedPoint)
+    }
+
+    fn begin_distances(&mut self, return_to: EdgeStep) -> CmdResult {
+        self.value_return = return_to;
+        self.step = EdgeStep::ChamferDistance1;
+        self.rebuild_preview();
+        CmdResult::NeedPoint
+    }
+
+    fn accept_distance(&mut self, value: f64) -> Option<CmdResult> {
+        if value <= 0.0 || !value.is_finite() {
+            return None;
+        }
+        match self.step {
+            EdgeStep::ChamferDistance1 => {
+                self.default_value = value;
+                self.step = EdgeStep::ChamferDistance2;
+            }
+            EdgeStep::ChamferDistance2 => {
+                self.other_value = value;
+                self.step = self.value_return;
+            }
+            _ => return None,
+        }
+        self.rebuild_preview();
+        Some(CmdResult::NeedPoint)
+    }
+
+    fn accept_loop(&mut self) -> CmdResult {
+        if let (Some(edges), Some(anchor)) = (
+            self.current_loop().map(|edges| edges.to_vec()),
+            self.last_pick,
+        ) {
+            if self.operation == EdgeOperation::Chamfer && self.base_face.is_none() {
+                self.base_face = self.current_loop_face();
+            }
+            self.add_batch(edges, anchor);
+        }
+        self.loop_candidates.clear();
+        self.loop_index = 0;
+        self.step = EdgeStep::Selecting;
+        self.rebuild_preview();
+        CmdResult::NeedPoint
+    }
+
+    fn finish(&self) -> CmdResult {
+        let Some(handle) = self.handle else {
             return CmdResult::Cancel;
         };
+        if self.selected_edges.is_empty() {
+            return CmdResult::Cancel;
+        }
         CmdResult::SolidEdgeBlend {
             handle,
-            pick,
-            value,
-            fillet: matches!(self.operation, EdgeOperation::Fillet),
+            edges: self.selected_edges.clone(),
+            base_face: self.base_face,
+            value: self.default_value,
+            other_value: self.other_value,
+            fillet: self.operation == EdgeOperation::Fillet,
         }
     }
 }
@@ -44,27 +313,114 @@ impl SolidEdgeCommand {
 impl CadCommand for SolidEdgeCommand {
     fn name(&self) -> &'static str {
         match self.operation {
-            EdgeOperation::Fillet => "SOLIDFILLET",
-            EdgeOperation::Chamfer => "SOLIDCHAMFER",
+            EdgeOperation::Fillet => "FILLETEDGE",
+            EdgeOperation::Chamfer => "CHAMFEREDGE",
         }
     }
 
     fn prompt(&self) -> String {
-        if self.picked.is_none() {
-            return crate::t!("Select a solid edge:").into_owned();
+        match (self.operation, self.step, self.selection_mode) {
+            (EdgeOperation::Chamfer, EdgeStep::Selecting, _) => {
+                crate::t!("Select an edge or [Loop/Distance]:").into_owned()
+            }
+            (EdgeOperation::Chamfer, EdgeStep::PickingLoop, _) => {
+                crate::t!("Select edge of loop or [Edge/Distance]:").into_owned()
+            }
+            (EdgeOperation::Chamfer, EdgeStep::PreviewConfirm, _) => {
+                crate::t!("Press Enter to accept the chamfer or [Distance]:").into_owned()
+            }
+            (EdgeOperation::Chamfer, EdgeStep::ChamferDistance1, _) => crate::tf!(
+                "Specify Distance1 or [Expression] <{:.4}>:",
+                self.default_value
+            )
+            .into_owned(),
+            (EdgeOperation::Chamfer, EdgeStep::ChamferDistance2, _) => crate::tf!(
+                "Specify Distance2 or [Expression] <{:.4}>:",
+                self.other_value
+            )
+            .into_owned(),
+            (_, EdgeStep::Selecting, EdgeSelectionMode::Edge) => {
+                crate::t!("Select an edge or [Chain/Loop/Radius]:").into_owned()
+            }
+            (_, EdgeStep::Selecting, EdgeSelectionMode::Chain) => {
+                crate::t!("Select an edge chain or [Edge/Radius]:").into_owned()
+            }
+            (_, EdgeStep::PickingLoop, _) => {
+                crate::t!("Select edge of loop or [Edge/Chain/Radius]:").into_owned()
+            }
+            (_, EdgeStep::LoopConfirm, _) => {
+                crate::t!("Enter an option [Accept/Next] <Accept>:").into_owned()
+            }
+            (_, EdgeStep::PreviewConfirm, _) => {
+                crate::t!("Press Enter to accept the fillet or [Radius]:").into_owned()
+            }
+            (_, EdgeStep::Radius, _) if self.value_return == EdgeStep::PreviewConfirm => crate::tf!(
+                "Specify Radius or [Expression] <{:.4}>:",
+                self.default_value
+            )
+            .into_owned(),
+            (_, EdgeStep::Radius, _) => crate::tf!(
+                "Enter fillet radius or [Expression] <{:.4}>:",
+                self.default_value
+            )
+            .into_owned(),
+            (_, EdgeStep::Expression, _) => crate::t!("Enter expression:").into_owned(),
+            _ => String::new(),
         }
-        match self.operation {
-            EdgeOperation::Fillet => {
-                crate::tf!("Specify fillet radius <{:.3}>:", self.default_value).into_owned()
+    }
+
+    fn options(&self) -> Vec<CmdOption> {
+        match (self.operation, self.step, self.selection_mode) {
+            (EdgeOperation::Chamfer, EdgeStep::Selecting, _) => vec![
+                CmdOption::new("Loop", "L"),
+                CmdOption::new("Distance", "D"),
+            ],
+            (EdgeOperation::Chamfer, EdgeStep::PickingLoop, _) => vec![
+                CmdOption::new("Edge", "E"),
+                CmdOption::new("Distance", "D"),
+            ],
+            (EdgeOperation::Chamfer, EdgeStep::LoopConfirm, _) => vec![
+                CmdOption::new("Accept", "A"),
+                CmdOption::new("Next", "N"),
+            ],
+            (EdgeOperation::Chamfer, EdgeStep::PreviewConfirm, _) => {
+                vec![CmdOption::new("Distance", "D")]
             }
-            EdgeOperation::Chamfer => {
-                crate::tf!("Specify chamfer distance <{:.3}>:", self.default_value).into_owned()
+            (
+                EdgeOperation::Chamfer,
+                EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2,
+                _,
+            ) => vec![CmdOption::new("Expression", "E")],
+            (EdgeOperation::Fillet, EdgeStep::Selecting, EdgeSelectionMode::Edge) => vec![
+                CmdOption::new("Chain", "C"),
+                CmdOption::new("Loop", "L"),
+                CmdOption::new("Radius", "R"),
+            ],
+            (EdgeOperation::Fillet, EdgeStep::Selecting, EdgeSelectionMode::Chain) => vec![
+                CmdOption::new("Edge", "E"),
+                CmdOption::new("Radius", "R"),
+            ],
+            (EdgeOperation::Fillet, EdgeStep::PickingLoop, _) => vec![
+                CmdOption::new("Edge", "E"),
+                CmdOption::new("Chain", "C"),
+                CmdOption::new("Radius", "R"),
+            ],
+            (EdgeOperation::Fillet, EdgeStep::LoopConfirm, _) => vec![
+                CmdOption::new("Accept", "A"),
+                CmdOption::new("Next", "N"),
+            ],
+            (EdgeOperation::Fillet, EdgeStep::PreviewConfirm, _) => {
+                vec![CmdOption::new("Radius", "R")]
             }
+            (EdgeOperation::Fillet, EdgeStep::Radius, _) => {
+                vec![CmdOption::new("Expression", "E")]
+            }
+            _ => Vec::new(),
         }
     }
 
     fn needs_entity_pick(&self) -> bool {
-        self.picked.is_none()
+        matches!(self.step, EdgeStep::Selecting | EdgeStep::PickingLoop)
     }
 
     fn entity_pick_includes_fills(&self) -> bool {
@@ -80,52 +436,281 @@ impl CadCommand for SolidEdgeCommand {
     }
 
     fn on_entity_pick(&mut self, handle: Handle, point: DVec3) -> CmdResult {
-        if handle.is_null() || self.target.is_some_and(|target| target != handle) {
+        if !self.pick_allowed(handle) {
             return CmdResult::NeedPoint;
         }
-        self.picked = Some((handle, point));
+        let Some(seed) = self
+            .body(handle)
+            .and_then(|body| crate::scene::model::solid_model::nearest_edge(body, point.to_array()))
+        else {
+            return CmdResult::NeedPoint;
+        };
+        self.handle = Some(handle);
+        self.last_pick = Some(point);
+
+        if self.step == EdgeStep::PickingLoop {
+            self.loop_candidates = edge_loops(self.body(handle).expect("pick body exists"), seed);
+            if self.operation == EdgeOperation::Chamfer {
+                if let Some(base_face) = self.base_face {
+                    self.loop_candidates
+                        .retain(|(face, _)| *face == base_face);
+                }
+            }
+            self.loop_index = 0;
+            self.step = if self.loop_candidates.is_empty() {
+                EdgeStep::Selecting
+            } else {
+                EdgeStep::LoopConfirm
+            };
+            self.rebuild_preview();
+            return CmdResult::NeedPoint;
+        }
+
+        if self.operation == EdgeOperation::Chamfer {
+            if self.base_face.is_none() {
+                self.base_face = self.body(handle).and_then(|body| {
+                    nearest_edge_face(body, seed, point.to_array())
+                });
+            }
+            let Some(base_face) = self.base_face else {
+                return CmdResult::NeedPoint;
+            };
+            if !edge_belongs_to_face(self.body(handle).expect("pick body exists"), seed, base_face)
+            {
+                return CmdResult::NeedPoint;
+            }
+            self.add_batch(vec![seed], point);
+            self.rebuild_preview();
+            return CmdResult::NeedPoint;
+        }
+
+        let edges = match self.selection_mode {
+            EdgeSelectionMode::Edge => vec![seed],
+            EdgeSelectionMode::Chain => edge_chain(self.body(handle).expect("pick body exists"), seed),
+        };
+        self.add_batch(edges, point);
+        self.rebuild_preview();
         CmdResult::NeedPoint
     }
 
     fn on_point(&mut self, point: DVec3) -> CmdResult {
-        let Some((_, pick)) = self.picked else {
+        if !matches!(
+            self.step,
+            EdgeStep::Radius | EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2
+        ) {
+            return CmdResult::NeedPoint;
+        }
+        let Some(anchor) = self.last_pick else {
             return CmdResult::NeedPoint;
         };
-        let value = point.distance(pick);
-        if value > 0.0 && value.is_finite() {
-            self.finish(value)
-        } else {
-            CmdResult::NeedPoint
+        let value = point.distance(anchor);
+        if value <= 0.0 || !value.is_finite() {
+            return CmdResult::NeedPoint;
+        }
+        match self.step {
+            EdgeStep::Radius => self.accept_radius(value).unwrap_or(CmdResult::NeedPoint),
+            EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2 => {
+                self.accept_distance(value).unwrap_or(CmdResult::NeedPoint)
+            }
+            _ => CmdResult::NeedPoint,
         }
     }
 
     fn on_text_input(&mut self, text: &str) -> Option<CmdResult> {
-        if self.picked.is_none() {
-            return None;
+        let keyword = text.trim().to_ascii_uppercase();
+        if self.operation == EdgeOperation::Chamfer {
+            return match self.step {
+                EdgeStep::Selecting => match keyword.as_str() {
+                    "L" | "LOOP" => {
+                        self.step = EdgeStep::PickingLoop;
+                        Some(CmdResult::NeedPoint)
+                    }
+                    "D" | "DISTANCE" => Some(self.begin_distances(EdgeStep::Selecting)),
+                    _ => None,
+                },
+                EdgeStep::PickingLoop => match keyword.as_str() {
+                    "E" | "EDGE" => {
+                        self.step = EdgeStep::Selecting;
+                        Some(CmdResult::NeedPoint)
+                    }
+                    "D" | "DISTANCE" => Some(self.begin_distances(EdgeStep::PickingLoop)),
+                    _ => None,
+                },
+                EdgeStep::LoopConfirm => match keyword.as_str() {
+                    "A" | "ACCEPT" => Some(self.accept_loop()),
+                    "N" | "NEXT" if !self.loop_candidates.is_empty() => {
+                        self.loop_index = (self.loop_index + 1) % self.loop_candidates.len();
+                        self.rebuild_preview();
+                        Some(CmdResult::NeedPoint)
+                    }
+                    _ => None,
+                },
+                EdgeStep::PreviewConfirm => match keyword.as_str() {
+                    "D" | "DISTANCE" => Some(self.begin_distances(EdgeStep::PreviewConfirm)),
+                    _ => None,
+                },
+                EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2 => {
+                    if matches!(keyword.as_str(), "E" | "EXPRESSION") {
+                        self.expression_return = self.step;
+                        self.step = EdgeStep::Expression;
+                        Some(CmdResult::NeedPoint)
+                    } else {
+                        let value = keyword.parse::<f64>().ok()?;
+                        self.accept_distance(value)
+                    }
+                }
+                EdgeStep::Expression => {
+                    let value = crate::app::expr_eval::eval_number(text)?;
+                    self.step = self.expression_return;
+                    self.accept_distance(value)
+                }
+                EdgeStep::Radius => None,
+            };
+        }
+
+        match self.step {
+            EdgeStep::Selecting => match keyword.as_str() {
+                "R" | "RADIUS" => Some(self.begin_radius(EdgeStep::Selecting)),
+                "C" | "CHAIN" => {
+                    self.selection_mode = EdgeSelectionMode::Chain;
+                    Some(CmdResult::NeedPoint)
+                }
+                "E" | "EDGE" if self.selection_mode == EdgeSelectionMode::Chain => {
+                    self.selection_mode = EdgeSelectionMode::Edge;
+                    Some(CmdResult::NeedPoint)
+                }
+                "L" | "LOOP" => {
+                    self.step = EdgeStep::PickingLoop;
+                    Some(CmdResult::NeedPoint)
+                }
+                _ => None,
+            },
+            EdgeStep::PickingLoop => match keyword.as_str() {
+                "E" | "EDGE" => {
+                    self.selection_mode = EdgeSelectionMode::Edge;
+                    self.step = EdgeStep::Selecting;
+                    Some(CmdResult::NeedPoint)
+                }
+                "C" | "CHAIN" => {
+                    self.selection_mode = EdgeSelectionMode::Chain;
+                    self.step = EdgeStep::Selecting;
+                    Some(CmdResult::NeedPoint)
+                }
+                "R" | "RADIUS" => Some(self.begin_radius(EdgeStep::PickingLoop)),
+                _ => None,
+            },
+            EdgeStep::LoopConfirm => match keyword.as_str() {
+                "A" | "ACCEPT" => Some(self.accept_loop()),
+                "N" | "NEXT" if !self.loop_candidates.is_empty() => {
+                    self.loop_index = (self.loop_index + 1) % self.loop_candidates.len();
+                    self.rebuild_preview();
+                    Some(CmdResult::NeedPoint)
+                }
+                _ => None,
+            },
+            EdgeStep::PreviewConfirm => match keyword.as_str() {
+                "R" | "RADIUS" => Some(self.begin_radius(EdgeStep::PreviewConfirm)),
+                _ => None,
+            },
+            EdgeStep::Radius => {
+                if matches!(keyword.as_str(), "E" | "EXPRESSION") {
+                    self.step = EdgeStep::Expression;
+                    return Some(CmdResult::NeedPoint);
+                }
+                let value = keyword.parse::<f64>().ok()?;
+                self.accept_radius(value)
+            }
+            EdgeStep::Expression => {
+                let value = crate::app::expr_eval::eval_number(text)?;
+                self.accept_radius(value)
+            }
+            EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2 => None,
         }
-        let value = text.trim().parse::<f64>().ok()?;
-        (value > 0.0 && value.is_finite()).then(|| self.finish(value))
     }
 
     fn on_enter(&mut self) -> CmdResult {
-        if self.picked.is_some() {
-            self.finish(self.default_value)
-        } else {
-            CmdResult::Cancel
+        match (self.operation, self.step) {
+            (EdgeOperation::Chamfer, EdgeStep::Selecting) if !self.selected_edges.is_empty() => {
+                self.step = EdgeStep::PreviewConfirm;
+                self.rebuild_preview();
+                CmdResult::NeedPoint
+            }
+            (EdgeOperation::Chamfer, EdgeStep::LoopConfirm) => self.accept_loop(),
+            (EdgeOperation::Chamfer, EdgeStep::PreviewConfirm) => self.finish(),
+            (EdgeOperation::Chamfer, EdgeStep::ChamferDistance1) => self
+                .accept_distance(self.default_value)
+                .unwrap_or(CmdResult::NeedPoint),
+            (EdgeOperation::Chamfer, EdgeStep::ChamferDistance2) => self
+                .accept_distance(self.other_value)
+                .unwrap_or(CmdResult::NeedPoint),
+            (EdgeOperation::Chamfer, EdgeStep::Expression) => CmdResult::NeedPoint,
+            (EdgeOperation::Chamfer, _) => CmdResult::Cancel,
+            (_, EdgeStep::Selecting) if !self.selected_edges.is_empty() => {
+                self.step = EdgeStep::PreviewConfirm;
+                self.rebuild_preview();
+                CmdResult::NeedPoint
+            }
+            (_, EdgeStep::LoopConfirm) => self.accept_loop(),
+            (_, EdgeStep::PreviewConfirm) => self.finish(),
+            (_, EdgeStep::Radius) => self
+                .accept_radius(self.default_value)
+                .unwrap_or(CmdResult::NeedPoint),
+            (_, EdgeStep::Expression) => CmdResult::NeedPoint,
+            _ => CmdResult::Cancel,
         }
     }
 
+    fn on_undo_step(&mut self) -> Option<CmdResult> {
+        if self.step == EdgeStep::LoopConfirm {
+            self.loop_candidates.clear();
+            self.loop_index = 0;
+            self.step = EdgeStep::Selecting;
+            self.rebuild_preview();
+            return Some(CmdResult::NeedPoint);
+        }
+        let (batch, _) = self.selection_batches.pop()?;
+        for edge in batch {
+            if let Some(index) = self.selected_edges.iter().position(|candidate| *candidate == edge) {
+                self.selected_edges.remove(index);
+            }
+        }
+        if self.selected_edges.is_empty() {
+            self.handle = None;
+            self.base_face = None;
+        }
+        self.last_pick = self
+            .selection_batches
+            .last()
+            .map(|(_, anchor)| *anchor);
+        self.step = EdgeStep::Selecting;
+        self.rebuild_preview();
+        Some(CmdResult::NeedPoint)
+    }
+
     fn wants_text_input(&self) -> bool {
-        self.picked.is_some()
+        matches!(
+            self.step,
+            EdgeStep::Radius
+                | EdgeStep::Expression
+                | EdgeStep::ChamferDistance1
+                | EdgeStep::ChamferDistance2
+        )
     }
 
     fn dyn_commit_as_text(&self) -> bool {
-        self.picked.is_some()
+        matches!(
+            self.step,
+            EdgeStep::Radius | EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2
+        )
     }
 
     fn dyn_spec(&self) -> Option<DynSpec> {
-        let (_, pick) = self.picked?;
-        Some(DynSpec {
+        let pick = self.last_pick?;
+        matches!(
+            self.step,
+            EdgeStep::Radius | EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2
+        )
+        .then(|| DynSpec {
             anchor: DynAnchor::Point(pick),
             fields: vec![DynFieldSpec::new(match self.operation {
                 EdgeOperation::Fillet => DynRole::Radius,
@@ -137,10 +722,163 @@ impl CadCommand for SolidEdgeCommand {
     }
 
     fn dyn_live_value(&self, cursor: DVec3) -> Option<f64> {
-        self.picked.map(|(_, pick)| cursor.distance(pick))
+        matches!(
+            self.step,
+            EdgeStep::Radius | EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2
+        )
+            .then(|| self.last_pick.map(|pick| cursor.distance(pick)))
+            .flatten()
+    }
+
+    fn on_preview_wires(&mut self, cursor: DVec3) -> Vec<WireModel> {
+        if matches!(
+            self.step,
+            EdgeStep::Radius | EdgeStep::ChamferDistance1 | EdgeStep::ChamferDistance2
+        ) {
+            if let Some(value) = self.last_pick.map(|pick| cursor.distance(pick)) {
+                if value > 0.0 && value.is_finite() {
+                    let values = match self.step {
+                        EdgeStep::ChamferDistance2 => (self.default_value, value),
+                        _ => (value, self.other_value),
+                    };
+                    if let Some((handle, wires)) = self.preview_for_values(values.0, values.1) {
+                        self.preview_wires = wires;
+                        self.preview_hidden.clear();
+                        self.preview_hidden.push(handle);
+                    } else {
+                        self.preview_wires.clear();
+                        self.preview_hidden.clear();
+                    }
+                }
+            }
+        }
+        self.preview_wires.clone()
+    }
+
+    fn preview_hidden_handles(&self) -> &[Handle] {
+        &self.preview_hidden
     }
 }
 
+fn edge_loops(body: &Body, seed: EdgeKey) -> Vec<(FaceKey, Vec<EdgeKey>)> {
+    let Some(edge) = body.edges.get(seed) else {
+        return Vec::new();
+    };
+    let mut candidates = Vec::new();
+    for coedge_key in &edge.coedges {
+        let Some(coedge) = body.coedges.get(*coedge_key) else {
+            continue;
+        };
+        let Some(edge_loop) = body.loops.get(coedge.owner) else {
+            continue;
+        };
+        let edges = edge_loop
+            .coedges
+            .iter()
+            .filter_map(|key| body.coedges.get(*key).map(|coedge| coedge.edge))
+            .collect::<Vec<_>>();
+        let candidate = (edge_loop.owner, edges);
+        if !candidate.1.is_empty() && !candidates.contains(&candidate) {
+            candidates.push(candidate);
+        }
+    }
+    candidates
+}
+
+fn edge_belongs_to_face(body: &Body, edge: EdgeKey, face: FaceKey) -> bool {
+    body.edges.get(edge).is_some_and(|edge| {
+        edge.coedges.iter().any(|coedge| {
+            body.coedges
+                .get(*coedge)
+                .and_then(|coedge| body.loops.get(coedge.owner))
+                .is_some_and(|edge_loop| edge_loop.owner == face)
+        })
+    })
+}
+
+fn nearest_edge_face(body: &Body, edge: EdgeKey, point: [f64; 3]) -> Option<FaceKey> {
+    let edge = body.edges.get(edge)?;
+    edge.coedges
+        .iter()
+        .filter_map(|coedge| {
+            let edge_loop = body.loops.get(body.coedges.get(*coedge)?.owner)?;
+            let face = body.faces.get(edge_loop.owner)?;
+            let surface = body.surfaces.get(face.surface)?;
+            let distance = surface.distance_to(point).abs();
+            distance.is_finite().then_some((edge_loop.owner, distance))
+        })
+        .min_by(|first, second| first.1.total_cmp(&second.1))
+        .map(|(face, _)| face)
+}
+
+fn positive_default(value: f64) -> f64 {
+    if value.is_finite() && value > 0.0 {
+        value
+    } else {
+        1.0
+    }
+}
+
+fn edge_chain(body: &Body, seed: EdgeKey) -> Vec<EdgeKey> {
+    let mut chain = vec![seed];
+    let mut next = 0;
+    while next < chain.len() {
+        let current_key = chain[next];
+        next += 1;
+        let Some(current) = body.edges.get(current_key) else {
+            continue;
+        };
+        for vertex in [current.start, current.end] {
+            let Some(current_tangent) = edge_tangent_from_vertex(body, current_key, vertex) else {
+                continue;
+            };
+            for candidate_key in body.edge_keys() {
+                if chain.contains(&candidate_key) {
+                    continue;
+                }
+                let Some(candidate) = body.edges.get(candidate_key) else {
+                    continue;
+                };
+                if candidate.start != vertex && candidate.end != vertex {
+                    continue;
+                }
+                let Some(candidate_tangent) =
+                    edge_tangent_from_vertex(body, candidate_key, vertex)
+                else {
+                    continue;
+                };
+                if current_tangent.dot(candidate_tangent) < -0.999 {
+                    chain.push(candidate_key);
+                }
+            }
+        }
+    }
+    chain
+}
+
+fn edge_tangent_from_vertex(
+    body: &Body,
+    edge_key: EdgeKey,
+    vertex: cadkernel::brep::VertexKey,
+) -> Option<DVec3> {
+    let edge = body.edges.get(edge_key)?;
+    let curve = body.curves.get(edge.curve)?;
+    let span = edge.end_parameter - edge.start_parameter;
+    if !span.is_finite() || span.abs() <= f64::EPSILON {
+        return None;
+    }
+    let step = span * 1.0e-6;
+    let (at, inside) = if edge.start == vertex {
+        (edge.start_parameter, edge.start_parameter + step)
+    } else if edge.end == vertex {
+        (edge.end_parameter, edge.end_parameter - step)
+    } else {
+        return None;
+    };
+    let tangent = DVec3::from(curve.point_at(inside)) - DVec3::from(curve.point_at(at));
+    (tangent.length_squared() > 0.0 && tangent.is_finite()).then(|| tangent.normalize())
+}
+
 inventory::submit!(crate::command::CommandRegistration {
-    names: &["SOLIDFILLET", "SOLIDCHAMFER"]
+    names: &["FILLETEDGE", "SOLIDFILLET", "CHAMFEREDGE", "SOLIDCHAMFER"]
 });

src/modules/model/mod.rs

@@ -89,8 +89,8 @@ impl CadModule for ModelModule {
                 RibbonGroup {
                     title: "Edges",
                     tools: vec![
-                        RibbonItem::LargeTool(tool("SOLIDFILLET", "Fillet", FILLET_ICON)),
-                        RibbonItem::LargeTool(tool("SOLIDCHAMFER", "Chamfer", CHAMFER_ICON)),
+                        RibbonItem::LargeTool(tool("FILLETEDGE", "Fillet Edge", FILLET_ICON)),
+                        RibbonItem::LargeTool(tool("CHAMFEREDGE", "Chamfer", CHAMFER_ICON)),
                     ],
                 },
             ]

src/scene/entity.rs

@@ -596,8 +596,8 @@ impl Scene {
             .filter_map(|&handle| {
                 let from_history = self
                     .document
-                    .solid_history_operation(handle)
-                    .and_then(|operation| cadkernel::acis::rebuild_body(operation).ok());
+                    .solid_history_operations(handle)
+                    .and_then(|operations| cadkernel::acis::rebuild_history(&operations).ok());
                 let body = from_history.or_else(|| match self.document.get_entity(handle) {
                     Some(EntityType::Solid3D(solid)) => {
                         crate::scene::convert::solid3d_tess::kernel_body(solid)

src/scene/model/solid_history.rs

@@ -1,12 +1,13 @@
 use acadrust::entities::{EmbeddedEntity, Solid3D};
 use acadrust::objects::{
-    DynamicBlockData, ObjectType, SolidHistoryBox, SolidHistoryBrep, SolidHistoryCone,
-    SolidHistoryCylinder, SolidHistoryLoft, SolidHistoryLoftParameters, SolidHistoryNodeBase, SolidHistoryOperation,
+    DynamicBlockData, ObjectType, SolidHistoryBox, SolidHistoryBrep, SolidHistoryChamfer,
+    SolidHistoryCone, SolidHistoryCylinder, SolidHistoryFillet, SolidHistoryLoft,
+    SolidHistoryLoftParameters, SolidHistoryNodeBase, SolidHistoryOperation,
     SolidHistoryPyramid, SolidHistoryRevolve, SolidHistorySphere, SolidHistorySweep,
     SolidHistoryTorus,
 };
 use acadrust::EntityType;
-use cadkernel::brep::Body;
+use cadkernel::brep::{Body, Surface};
 
 use crate::command::EntityTransform;
 use crate::entities::traits::EntityTypeOps;
@@ -32,6 +33,9 @@ pub const GRIP_SWEEP_PATH_FIRST: usize = 30_000;
 pub const GRIP_LOFT_SECTION_FIRST: usize = 40_000;
 pub const GRIP_REVOLVE_PROFILE_FIRST: usize = 50_000;
 pub const GRIP_REVOLVE_AXIS: usize = 10_013;
+pub const GRIP_FILLET_RADIUS: usize = 10_014;
+pub const GRIP_CHAMFER_DISTANCE1: usize = 10_015;
+pub const GRIP_CHAMFER_DISTANCE2: usize = 10_016;
 pub const GRIP_BOX_CORNER_FIRST: usize = 10_100;
 pub const GRIP_BOX_FACE_X_MIN: usize = 10_110;
 pub const GRIP_BOX_FACE_X_MAX: usize = 10_111;
@@ -197,7 +201,7 @@ pub fn has_specialized_primitive_properties(
     handle: acadrust::Handle,
 ) -> bool {
     matches!(
-        document.solid_history_operation(handle),
+        primitive_property_operation(document, handle).as_ref(),
         Some(
             SolidHistoryOperation::Box(_)
                 | SolidHistoryOperation::Wedge(_)
@@ -214,6 +218,19 @@ pub fn has_specialized_primitive_properties(
     )
 }
 
+/// Return the primitive that owns the public Geometry rows. Later operations
+/// such as edge fillets and chamfers refine that primitive but do not replace
+/// its editable type, position, or dimensions.
+pub fn primitive_property_operation(
+    document: &acadrust::CadDocument,
+    handle: acadrust::Handle,
+) -> Option<SolidHistoryOperation> {
+    document
+        .solid_history_operations(handle)
+        .and_then(|operations| operations.into_iter().next())
+        .or_else(|| document.solid_history_operation(handle).cloned())
+}
+
 /// Solid history results whose public Properties palette is fully described by
 /// the common entity rows plus [`primitive_properties`].  A generic B-rep has
 /// no stable primitive dimensions to expose, but it still uses the compact
@@ -1438,10 +1455,10 @@ pub fn primitive_properties(
     document: &acadrust::CadDocument,
     handle: acadrust::Handle,
 ) -> Vec<PropSection> {
-    let Some(operation) = document.solid_history_operation(handle) else {
+    let Some(operation) = primitive_property_operation(document, handle) else {
         return brep_properties(document, handle);
     };
-    match operation {
+    match &operation {
         SolidHistoryOperation::Box(value) => {
             rectangular_properties(document, handle, value, "Box")
         }
@@ -3086,6 +3103,149 @@ fn grip(
     }
 }
 
+pub fn fillet_radius_grip(body: &Body, radius: f64) -> Option<GripDef> {
+    if !radius.is_finite() || radius <= 0.0 {
+        return None;
+    }
+    for (face_key, face) in body.faces.iter() {
+        let Some(Surface::Cylinder(cylinder)) = body.surfaces.get(face.surface) else {
+            continue;
+        };
+        if (cylinder.radius.abs() - radius).abs() > radius.max(1.0) * 1.0e-7 {
+            continue;
+        }
+        let axis = glam::DVec3::from_array(cylinder.base.normal()?).try_normalize()?;
+        let origin = glam::DVec3::from_array(cylinder.base.origin);
+        let points = body
+            .face_coedges(face_key)
+            .into_iter()
+            .filter_map(|coedge| body.coedges.get(coedge))
+            .filter_map(|coedge| body.edges.get(coedge.edge))
+            .flat_map(|edge| [edge.start, edge.end])
+            .filter_map(|vertex| body.vertices.get(vertex))
+            .map(|vertex| glam::DVec3::from_array(vertex.point))
+            .collect::<Vec<_>>();
+        let minimum = points
+            .iter()
+            .map(|point| (*point - origin).dot(axis))
+            .reduce(f64::min)?;
+        let maximum = points
+            .iter()
+            .map(|point| (*point - origin).dot(axis))
+            .reduce(f64::max)?;
+        let center = origin + axis * ((minimum + maximum) * 0.5);
+        let radial = points
+            .iter()
+            .map(|point| *point - center - axis * (*point - center).dot(axis))
+            .find_map(|radial| radial.try_normalize())?;
+        return Some(grip(
+            GRIP_FILLET_RADIUS,
+            center + radial * radius,
+            GripShape::Square,
+            Some(radial),
+        ));
+    }
+    None
+}
+
+pub fn chamfer_distance_grips(
+    document: &acadrust::CadDocument,
+    handle: acadrust::Handle,
+    value: &SolidHistoryChamfer,
+) -> Vec<GripDef> {
+    let Some(operations) = document.solid_history_operations(handle) else {
+        return Vec::new();
+    };
+    let Some(chamfer_index) = operations
+        .iter()
+        .rposition(|operation| matches!(operation, SolidHistoryOperation::Chamfer(_)))
+    else {
+        return Vec::new();
+    };
+    let Ok(source) = cadkernel::acis::rebuild_history(&operations[..chamfer_index]) else {
+        return Vec::new();
+    };
+    let edges = source.edge_keys().collect::<Vec<_>>();
+    let faces = source.face_keys().collect::<Vec<_>>();
+    let Some(edge) = value
+        .edges
+        .first()
+        .and_then(|ordinal| usize::try_from(*ordinal).ok())
+        .and_then(|ordinal| edges.get(ordinal).copied())
+        .and_then(|edge| source.edges.get(edge))
+    else {
+        return Vec::new();
+    };
+    let Some(base_face) = usize::try_from(value.base_face)
+        .ok()
+        .and_then(|ordinal| faces.get(ordinal).copied())
+    else {
+        return Vec::new();
+    };
+    let adjacent = edge
+        .coedges
+        .iter()
+        .filter_map(|coedge| source.coedges.get(*coedge))
+        .filter_map(|coedge| source.loops.get(coedge.owner))
+        .map(|edge_loop| edge_loop.owner)
+        .collect::<Vec<_>>();
+    let Some(other_face) = adjacent.iter().copied().find(|face| *face != base_face) else {
+        return Vec::new();
+    };
+    let outward = |face_key| {
+        let face = source.faces.get(face_key)?;
+        let Surface::Plane(plane) = source.surfaces.get(face.surface)? else {
+            return None;
+        };
+        let normal = glam::DVec3::from_array(plane.normal()?).try_normalize()?;
+        Some(if face.forward { normal } else { -normal })
+    };
+    let Some(base_normal) = outward(base_face) else {
+        return Vec::new();
+    };
+    let Some(other_normal) = outward(other_face) else {
+        return Vec::new();
+    };
+    let dot = base_normal.dot(other_normal);
+    let Some(base_inward) = (-(other_normal - base_normal * dot)).try_normalize() else {
+        return Vec::new();
+    };
+    let Some(other_inward) = (-(base_normal - other_normal * dot)).try_normalize() else {
+        return Vec::new();
+    };
+    let Some(start) = source.vertices.get(edge.start) else {
+        return Vec::new();
+    };
+    let Some(end) = source.vertices.get(edge.end) else {
+        return Vec::new();
+    };
+    let midpoint =
+        (glam::DVec3::from_array(start.point) + glam::DVec3::from_array(end.point)) * 0.5;
+    [
+        (
+            GRIP_CHAMFER_DISTANCE1,
+            value.base_distance,
+            base_inward,
+        ),
+        (
+            GRIP_CHAMFER_DISTANCE2,
+            value.other_distance,
+            other_inward,
+        ),
+    ]
+    .into_iter()
+    .filter(|(_, distance, _)| distance.is_finite() && *distance > 0.0)
+    .map(|(id, distance, axis)| {
+        grip(
+            id,
+            midpoint + axis * distance,
+            GripShape::Square,
+            Some(axis),
+        )
+    })
+    .collect()
+}
+
 pub fn primitive_grips(
     document: &acadrust::CadDocument,
     handle: acadrust::Handle,
@@ -3093,6 +3253,21 @@ pub fn primitive_grips(
     let Some(operation) = document.solid_history_operation(handle) else {
         return Vec::new();
     };
+    if let SolidHistoryOperation::Fillet(value) = operation {
+        let Some(radius) = value.radii.first().copied() else {
+            return Vec::new();
+        };
+        let Some(EntityType::Solid3D(solid)) = document.get_entity(handle) else {
+            return Vec::new();
+        };
+        return crate::scene::convert::solid3d_tess::kernel_body(solid)
+            .and_then(|body| fillet_radius_grip(&body, radius))
+            .into_iter()
+            .collect();
+    }
+    if let SolidHistoryOperation::Chamfer(value) = operation {
+        return chamfer_distance_grips(document, handle, value);
+    }
     let mut grips = Vec::new();
     let mut add = |id, transform, point, shape, axis: Option<[f64; 3]>| {
         if let Some(world) = world_point(transform, point) {
@@ -3713,3 +3888,32 @@ pub fn brep_op(body: &Body) -> SolidHistoryOperation {
         ..SolidHistoryBrep::default()
     })
 }
+
+pub fn fillet_op(edges: Vec<i32>, radius: f64) -> SolidHistoryOperation {
+    SolidHistoryOperation::Fillet(SolidHistoryFillet {
+        base: base(glam::DMat4::IDENTITY.to_cols_array()),
+        operation_major: 1,
+        method: 0,
+        edges,
+        radii: vec![radius],
+        ..SolidHistoryFillet::default()
+    })
+}
+
+pub fn chamfer_op(
+    edges: Vec<i32>,
+    base_face: i32,
+    base_distance: f64,
+    other_distance: f64,
+) -> SolidHistoryOperation {
+    SolidHistoryOperation::Chamfer(SolidHistoryChamfer {
+        base: base(glam::DMat4::IDENTITY.to_cols_array()),
+        operation_major: 1,
+        method: 0,
+        base_distance,
+        other_distance,
+        edges,
+        base_face,
+        ..SolidHistoryChamfer::default()
+    })
+}

src/scene/modify.rs

@@ -802,11 +802,39 @@ impl Scene {
         true
     }
 
+    pub fn append_solid_history(
+        &mut self,
+        handle: Handle,
+        operation: acadrust::objects::SolidHistoryOperation,
+    ) -> bool {
+        let previous = self
+            .document
+            .solid_history_graph(handle)
+            .map(|graph| graph.nodes)
+            .unwrap_or_default();
+        self.record_solid_history_before(handle);
+        let Some(graph) = self.document.append_solid_history(handle, operation) else {
+            return false;
+        };
+        for node in graph.nodes {
+            if !previous.contains(&node) {
+                self.record_undo_object_before(node, None);
+            }
+        }
+        self.sync_solid_reference_point(handle);
+        true
+    }
+
     pub(crate) fn sync_solid_reference_point(&mut self, handle: Handle) {
         let reference = self
             .document
-            .solid_history_operation(handle)
-            .and_then(crate::scene::model::solid_history::reference_point);
+            .solid_history_operations(handle)
+            .and_then(|operations| {
+                operations
+                    .iter()
+                    .rev()
+                    .find_map(crate::scene::model::solid_history::reference_point)
+            });
         let Some(reference) = reference else {
             return;
         };
@@ -855,8 +883,31 @@ impl Scene {
             (EntityType::Surface(_), SolidHistoryOperation::Extrusion(value)) => {
                 cadkernel::acis::rebuild_extrusion_with_mode(value, true).ok()
             }
-            (EntityType::Surface(_), SolidHistoryOperation::Loft(_))
-                | (EntityType::Solid3D(_), _) => cadkernel::acis::rebuild_body(operation).ok(),
+            (EntityType::Surface(_), SolidHistoryOperation::Loft(_)) => {
+                cadkernel::acis::rebuild_body(operation).ok()
+            }
+            (EntityType::Solid3D(_), _) => {
+                let mut operations = self.document.solid_history_operations(handle)?;
+                let replacement_id = operation.base().map(|base| {
+                    if base.eval.node_id > 0 {
+                        base.eval.node_id
+                    } else {
+                        base.step_id
+                    }
+                })?;
+                let target = operations.iter_mut().find(|candidate| {
+                    candidate.base().is_some_and(|base| {
+                        let node_id = if base.eval.node_id > 0 {
+                            base.eval.node_id
+                        } else {
+                            base.step_id
+                        };
+                        node_id == replacement_id
+                    })
+                })?;
+                *target = operation.clone();
+                cadkernel::acis::rebuild_history(&operations).ok()
+            }
             _ => None,
         }
     }
@@ -909,7 +960,7 @@ impl Scene {
         self.record_solid_history_before(handle);
         if self
             .document
-            .update_solid_history(handle, operation)
+            .update_solid_history_step(handle, operation)
             .is_none()
         {
             return false;
@@ -1122,6 +1173,79 @@ impl Scene {
         let Some(mut operation) = self.document.solid_history_operation(handle).cloned() else {
             return false;
         };
+        if grip_id == crate::scene::model::solid_history::GRIP_FILLET_RADIUS {
+            let acadrust::objects::SolidHistoryOperation::Fillet(value) = &mut operation else {
+                return false;
+            };
+            let Some(radius) = value.radii.first().copied() else {
+                return false;
+            };
+            self.restore_solid_models(&[handle]);
+            let Some(definition) = self
+                .solid_models
+                .get(&handle)
+                .and_then(|body| {
+                    crate::scene::model::solid_history::fillet_radius_grip(body, radius)
+                })
+            else {
+                return false;
+            };
+            let Some(axis) = definition.axis else {
+                return false;
+            };
+            let change = match apply {
+                GripApply::Absolute(world) => (world - definition.world).dot(axis),
+                GripApply::Translate(delta) => delta.dot(axis),
+            };
+            let radius = radius + change;
+            if !radius.is_finite() || radius <= 1.0e-6 {
+                return false;
+            }
+            value.radii.clear();
+            value.radii.push(radius);
+            return self.preview_solid_history(handle, operation);
+        }
+        if matches!(
+            grip_id,
+            crate::scene::model::solid_history::GRIP_CHAMFER_DISTANCE1
+                | crate::scene::model::solid_history::GRIP_CHAMFER_DISTANCE2
+        ) {
+            let definitions = {
+                let acadrust::objects::SolidHistoryOperation::Chamfer(value) = &operation else {
+                    return false;
+                };
+                crate::scene::model::solid_history::chamfer_distance_grips(
+                    &self.document,
+                    handle,
+                    value,
+                )
+            };
+            let Some(definition) = definitions.into_iter().find(|grip| grip.id == grip_id) else {
+                return false;
+            };
+            let Some(axis) = definition.axis else {
+                return false;
+            };
+            let change = match apply {
+                GripApply::Absolute(world) => (world - definition.world).dot(axis),
+                GripApply::Translate(delta) => delta.dot(axis),
+            };
+            let acadrust::objects::SolidHistoryOperation::Chamfer(value) = &mut operation else {
+                return false;
+            };
+            let distance = if grip_id
+                == crate::scene::model::solid_history::GRIP_CHAMFER_DISTANCE1
+            {
+                &mut value.base_distance
+            } else {
+                &mut value.other_distance
+            };
+            *distance += change;
+            if !distance.is_finite() || *distance <= 1.0e-6 {
+                return false;
+            }
+            return self.preview_solid_history(handle, operation);
+        }
         if !crate::scene::model::solid_history::apply_primitive_grip(
             &mut operation,
             grip_id,
@@ -1138,7 +1262,12 @@ impl Scene {
         field: &str,
         value: &str,
     ) -> bool {
-        let Some(mut operation) = self.document.solid_history_operation(handle).cloned() else {
+        let Some(mut operation) =
+            crate::scene::model::solid_history::primitive_property_operation(
+                &self.document,
+                handle,
+            )
+        else {
             return false;
         };
         if !crate::scene::model::solid_history::apply_primitive_property(