UI scenarios, batch 2: edit an early sketch from the timeline, components with a revolute joint driven to 90°, sheet metal base and edge flange to flat pattern and DXF, STEP export, new design and STEP insert with a hole on the imported face, parameters table drives the model, sketch constraints workflow (dimensions, delete and undo, fix, construction), rectangular pattern. Harness: widgets found by their text through the accessibility tree, file pickers answered from the scenario's folder, model renders at shot steps (SOLVECRAFT_SCENARIO_SHOTS), query/file checks; ui.at takes a dimension. Fix: a click on a sketch point under a dimension line (a diameter through the centre) selects the point; only the dimension's text takes precedence

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

crates/ui-egui/src/dim_view.rs

@@ -65,6 +65,11 @@ fn seg_dist(p: Pos2, a: Pos2, b: Pos2) -> f32 {
     p.distance(a + ab * t)
 }
 
+/// The dimension whose value text is under a screen position (its id).
+pub fn hit_text(pos: Pos2) -> Option<String> {
+    DRAWN.with(|d| d.borrow().iter().find(|x| x.text.expand(2.0).contains(pos)).map(|x| x.id.clone()))
+}
+
 /// The dimension under a screen position (its id).
 pub fn hit(pos: Pos2) -> Option<String> {
     DRAWN.with(|d| {
@@ -88,6 +93,12 @@ pub fn selected(app: &SolveApp) -> Vec<String> {
         .collect()
 }
 
+/// Where the dimension driven by parameter `param` (or with constraint id `param`) shows its
+/// value (screen), as drawn last frame.
+pub fn text_at(param: &str) -> Option<Pos2> {
+    DRAWN.with(|d| d.borrow().iter().find(|x| x.param.as_deref() == Some(param) || x.id == param).map(|x| x.text.center()))
+}
+
 /// Dimension text boxes drawn last frame (for box selection).
 pub fn text_rects() -> Vec<(String, Rect)> {
     DRAWN.with(|d| d.borrow().iter().map(|x| (x.id.clone(), x.text)).collect())