Dimensional constraints: dynamic dimension persistence, lock mark, display variables, DIMCONSTRAINT

The dynamic dimension of a dimensional constraint is now linked in the
drawing file (AcDbAssocDependency + AcDbAssocDimDependencyBody on the
constraint node), reread on load, hidden by DCHIDE/DYNCONSTRAINTDISPLAY
and never plotted; it carries a lock mark before its text. New
CONSTRAINTNAMEFORMAT and DYNCONSTRAINTDISPLAY variables and the
DIMCONSTRAINT option front end. A transformed entity whose own end points
a driving dimension measures keeps only the first constraint point, so a
scaled line returns to its dimension value.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

src/app/command_driver.rs

@@ -3686,6 +3686,8 @@ impl OpenCADStudio {
                     &[first],
                     self.constraint_solve_mode,
                 );
+                // DYNCONSTRAINTDISPLAY 0 also keeps a new dynamic dimension off screen.
+                self.tabs[i].scene.refresh_hidden_dynamic_dimensions();
                 self.tabs[i].dirty = true;
                 self.tabs[i].active_cmd = None;
                 self.tabs[i].snap_result = None;

src/app/commands/draw.rs

@@ -1506,6 +1506,16 @@ impl OpenCADStudio {
                 self.tabs[i].active_cmd = Some(Box::new(new_cmd));
             }
 
+            "DIMCONSTRAINT" => {
+                use crate::modules::parametric::DimConstraintMenuCommand;
+                // Only the dynamic form exists here.
+                self.command_line
+                    .push_output("Current settings: Constraint form = Dynamic");
+                let new_cmd = DimConstraintMenuCommand;
+                self.command_line.push_info(&new_cmd.prompt());
+                self.tabs[i].active_cmd = Some(Box::new(new_cmd));
+            }
+
             "EDCONSTRAINT" => {
                 use crate::modules::parametric::EqualDistanceConstraintCommand;
                 let new_cmd = EqualDistanceConstraintCommand::new();

src/app/commands/styleprops.rs

@@ -1052,6 +1052,8 @@ impl OpenCADStudio {
                     | "CONSTRAINTINFER"
                     | "CONSTRAINTBARDISPLAY"
                     | "CONSTRAINTBARMODE"
+                    | "CONSTRAINTNAMEFORMAT"
+                    | "DYNCONSTRAINTDISPLAY"
             ) =>
             {
                 return self.dispatch_styleprops(&format!("SETVAR {cmd}"), i);
@@ -1075,7 +1077,7 @@ impl OpenCADStudio {
                 if name.is_empty() || name == "?" {
                     self.command_line.push_info(&super::plotvars::setvar_listing());
                     self.command_line.push_info(
-                        crate::t!("SETVAR: CETRANSPARENCY LTSCALE CELTSCALE PDMODE PDSIZE TEXTSIZE ORTHOMODE FILLMODE MIRRTEXT FRAME IMAGEFRAME PDFFRAME WIPEOUTFRAME XCLIPFRAME POINTCLOUDCLIPFRAME ZOOMWHEEL ZOOMFACTOR SHORTCUTMENU SHORTCUTMENUDURATION CURSORSIZE PICKBOX CURSORTYPE SNAPANG TEXTFILL CLIPROMPTLINES COMMANDLINEFADETIME ATTREQ ATTDIA DIMASSOC DIMCONTINUEMODE CONSTRAINTSOLVEMODE CONSTRAINTINFER CONSTRAINTBARDISPLAY CONSTRAINTBARMODE ANGBASE ANGDIR SKETCHINC SKPOLY SKTOLERANCE DONUTID DONUTOD CENTEREXE CENTERLAYER CENTERLTYPE CENTERLTSCALE CENTERLTYPEFILE CENTERCROSSSIZE CENTERCROSSGAP CENTERMARKEXE COLORTHEME SELECTIONAREA SELECTIONAREAOPACITY SELECTIONEFFECT SELECTIONEFFECTCOLOR WINDOWSAREACOLOR CROSSINGAREACOLOR SELECTIONPREVIEW GRIPSIZE GRIPCOLOR GRIPHOT GRIPHOVER GRIPOBJLIMIT | CLAYER CELTYPE TEXTSTYLE (read-only)").as_ref(),
+                        crate::t!("SETVAR: CETRANSPARENCY LTSCALE CELTSCALE PDMODE PDSIZE TEXTSIZE ORTHOMODE FILLMODE MIRRTEXT FRAME IMAGEFRAME PDFFRAME WIPEOUTFRAME XCLIPFRAME POINTCLOUDCLIPFRAME ZOOMWHEEL ZOOMFACTOR SHORTCUTMENU SHORTCUTMENUDURATION CURSORSIZE PICKBOX CURSORTYPE SNAPANG TEXTFILL CLIPROMPTLINES COMMANDLINEFADETIME ATTREQ ATTDIA DIMASSOC DIMCONTINUEMODE CONSTRAINTSOLVEMODE CONSTRAINTINFER CONSTRAINTBARDISPLAY CONSTRAINTBARMODE CONSTRAINTNAMEFORMAT DYNCONSTRAINTDISPLAY ANGBASE ANGDIR SKETCHINC SKPOLY SKTOLERANCE DONUTID DONUTOD CENTEREXE CENTERLAYER CENTERLTYPE CENTERLTSCALE CENTERLTYPEFILE CENTERCROSSSIZE CENTERCROSSGAP CENTERMARKEXE COLORTHEME SELECTIONAREA SELECTIONAREAOPACITY SELECTIONEFFECT SELECTIONEFFECTCOLOR WINDOWSAREACOLOR CROSSINGAREACOLOR SELECTIONPREVIEW GRIPSIZE GRIPCOLOR GRIPHOT GRIPHOVER GRIPOBJLIMIT | CLAYER CELTYPE TEXTSTYLE (read-only)").as_ref(),
                     );
                 } else {
                     if name == "CETRANSPARENCY" {
@@ -1275,17 +1277,26 @@ impl OpenCADStudio {
                             | "CONSTRAINTINFER"
                             | "CONSTRAINTBARDISPLAY"
                             | "CONSTRAINTBARMODE"
+                            | "CONSTRAINTNAMEFORMAT"
+                            | "DYNCONSTRAINTDISPLAY"
                     ) {
                         let current = match name.as_str() {
                             "CONSTRAINTSOLVEMODE" => i16::from(self.constraint_solve_mode),
                             "CONSTRAINTINFER" => i16::from(self.constraint_infer),
                             "CONSTRAINTBARDISPLAY" => self.constraint_bar_display,
                             "CONSTRAINTBARMODE" => self.constraint_bar_mode,
+                            "CONSTRAINTNAMEFORMAT" => {
+                                i16::from(self.tabs[i].scene.constraint_name_format)
+                            }
+                            "DYNCONSTRAINTDISPLAY" => {
+                                i16::from(self.tabs[i].scene.dynamic_constraint_display)
+                            }
                             _ => unreachable!(),
                         };
                         let maximum = match name.as_str() {
                             "CONSTRAINTBARDISPLAY" => 3,
                             "CONSTRAINTBARMODE" => 4095,
+                            "CONSTRAINTNAMEFORMAT" => 2,
                             _ => 1,
                         };
                         if let Some(value) = &value {
@@ -1304,6 +1315,16 @@ impl OpenCADStudio {
                                             self.constraint_bar_display = mode
                                         }
                                         "CONSTRAINTBARMODE" => self.constraint_bar_mode = mode,
+                                        "CONSTRAINTNAMEFORMAT" => {
+                                            self.tabs[i].scene.constraint_name_format = mode as u8;
+                                            self.tabs[i].scene.refresh_dynamic_dimension_texts();
+                                            self.tabs[i].dirty = true;
+                                        }
+                                        "DYNCONSTRAINTDISPLAY" => {
+                                            self.tabs[i].scene.dynamic_constraint_display =
+                                                mode != 0;
+                                            self.tabs[i].scene.refresh_hidden_dynamic_dimensions();
+                                        }
                                         _ => unreachable!(),
                                     }
                                     self.persist_settings_if_changed();