UI: interactive tools for the new sketch commands (crates/ui-egui/src/sketch_tools.rs): Project/Intersect/Include and the other model-pick tools, Trim/Extend/Break by clicking the piece, Offset (curve then side), sketch Fillet/Chamfer at a corner (radius dialog), Curvature, tangent circles, SketchConstrainer, Polygon, Mirror and sketch patterns, Project To Surface, Intersection Curve, Spun Profile, point tools for midpoint line, tangent arc, ellipse, conic, splines, arc slots, blend curve, and a text box for Text; constraint glyphs on the active sketch; text outline points hidden. Hooks in tools.rs/viewport.rs/lib.rs are a few lines

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

crates/ui-egui/src/tools.rs

@@ -15,6 +15,8 @@ pub enum Kind {
     /// Pick sketch entities; `n` picks run the command.
     Pick(usize),
     Dimension,
+    /// A tool from `sketch_tools` (it handles its own clicks).
+    Ext,
 }
 
 #[derive(Clone, Debug)]
@@ -64,7 +66,7 @@ impl Tool {
             "ConstraintMidPoint" => ("ConstraintMidPoint", Kind::Pick(2)),
             "ConstraintSymmetry" => ("ConstraintSymmetry", Kind::Pick(3)),
             "sketch.construction" => ("sketch.construction", Kind::Pick(1)),
-            _ => return None,
+            _ => return crate::sketch_tools::tool_for(id),
         };
         Some(Tool { cmd, kind, pts: Vec::new(), hover: None, picks: Vec::new(), dims: Vec::new(), dims_stage: usize::MAX, dims_focus: false })
     }
@@ -82,7 +84,7 @@ pub fn hint(id: &str) -> String {
         "SketchDimension" => "Dimension: pick a line, circle or arc (or two points/lines)".into(),
         "ShapeSlotCenterToCenter" | "ShapeSlotOverall" => "Slot: click both ends, then the width".into(),
         _ if id.starts_with("Constraint") => "Constraint: pick the sketch entities".into(),
-        _ => "Click in the sketch".into(),
+        _ => crate::sketch_tools::hint(id).unwrap_or_else(|| "Click in the sketch".into()),
     }
 }
 
@@ -131,6 +133,7 @@ pub fn on_click(app: &mut SolveApp, proj: &Proj, pos: Pos2) {
                 tool.picks.clear();
             }
         }
+        Kind::Ext => crate::sketch_tools::on_click(app, &mut tool, proj, pos),
         Kind::Dimension => {
             let hits = pick(app, proj, pos);
             let hit = hits.iter().find_map(|h| match h {
@@ -249,6 +252,12 @@ fn run_pick(app: &mut SolveApp, t: &Tool) {
 
 /// Right click / Esc: end the current chain (line) or cancel the tool.
 pub fn finish(app: &mut SolveApp) {
+    if let Some(mut t) = app.tool.take_if(|t| t.kind == Kind::Ext) {
+        if crate::sketch_tools::finish(app, &mut t) {
+            app.tool = Some(t);
+        }
+        return;
+    }
     if let Some(t) = app.tool.as_mut()
         && !t.pts.is_empty()
     {
@@ -261,6 +270,9 @@ pub fn finish(app: &mut SolveApp) {
 
 /// Rubber-band preview of the shape being drawn.
 pub fn preview(app: &SolveApp, t: &Tool, painter: &egui::Painter, proj: &Proj) {
+    if t.kind == Kind::Ext {
+        return crate::sketch_tools::preview(app, t, painter, proj);
+    }
     let Some(sid) = app.session.active_sketch else { return };
     let st = app.session.model.state();
     let Some(ss) = st.sketch(sid) else { return };