Merge pull request #1301: Add associative viewport dimensions

Refresh associations after complete SpaceMouse camera updates and recognize imported paper-space owners without Layout objects. Use kernel containment, intersection, perpendicular and spline tangent solving; pin cadkernel 7ce27f2 and add regressions.

src/modules/annotate/aligned_dim.rs

@@ -161,6 +161,24 @@ impl CadCommand for AlignedDimensionCommand {
         CmdResult::Cancel
     }
 
+    /// Points and object picks may come through a paper-space viewport;
+    /// the committed dimension then reports the model measurement.
+    fn measures_through_viewports(&self) -> bool {
+        true
+    }
+
+    fn dimension_acquired_points(&self) -> Vec<DVec3> {
+        match self.step {
+            Step::First => vec![],
+            Step::Second(p) => vec![p],
+            Step::DimLine { p1, p2 } => vec![p1, p2],
+        }
+    }
+
+    fn dimension_placement_pending(&self) -> bool {
+        matches!(self.step, Step::DimLine { .. })
+    }
+
     fn input_kind(&self) -> InputKind {
         if self.awaiting_text {
             InputKind::FreeText

src/modules/annotate/angular_dim.rs

@@ -482,6 +482,42 @@ impl CadCommand for AngularDimensionCommand {
         CmdResult::Cancel
     }
 
+    /// Points and object picks may come through a paper-space viewport;
+    /// the committed dimension then reports the model measurement.
+    fn measures_through_viewports(&self) -> bool {
+        true
+    }
+
+    fn dimension_acquired_points(&self) -> Vec<DVec3> {
+        match self.step {
+            Step::Vertex => vec![],
+            Step::FirstRay(p) => vec![p],
+            Step::SecondRay { vertex, first } | Step::CircleSecondRay { vertex, first, .. } => {
+                vec![vertex, first]
+            }
+            Step::SecondLine {
+                first_start,
+                first_end,
+                ..
+            } => vec![first_start, first_end],
+            Step::ArcPoint3 {
+                vertex,
+                first,
+                second,
+            } => vec![vertex, first, second],
+            Step::ArcPoint2 {
+                first_start,
+                first_end,
+                second_start,
+                second_end,
+            } => vec![first_start, first_end, second_start, second_end],
+        }
+    }
+
+    fn dimension_placement_pending(&self) -> bool {
+        matches!(self.step, Step::ArcPoint3 { .. } | Step::ArcPoint2 { .. })
+    }
+
     fn on_escape(&mut self) -> CmdResult {
         CmdResult::Cancel
     }

src/modules/annotate/diameter_dim.rs

@@ -132,6 +132,23 @@ impl CadCommand for DiameterDimensionCommand {
         CmdResult::Cancel
     }
 
+    /// Points and object picks may come through a paper-space viewport;
+    /// the committed dimension then reports the model measurement.
+    fn measures_through_viewports(&self) -> bool {
+        true
+    }
+
+    fn dimension_acquired_points(&self) -> Vec<DVec3> {
+        match self.step {
+            Step::SelectObject => vec![],
+            Step::DimLine(source) => vec![dvec(source.point_at_angle(source.start_angle))],
+        }
+    }
+
+    fn dimension_placement_pending(&self) -> bool {
+        matches!(self.step, Step::DimLine(_))
+    }
+
     fn on_escape(&mut self) -> CmdResult {
         CmdResult::Cancel
     }

src/modules/annotate/linear_dim.rs

@@ -217,6 +217,24 @@ impl CadCommand for LinearDimensionCommand {
         CmdResult::Cancel
     }
 
+    /// Points and object picks may come through a paper-space viewport;
+    /// the committed dimension then reports the model measurement.
+    fn measures_through_viewports(&self) -> bool {
+        true
+    }
+
+    fn dimension_acquired_points(&self) -> Vec<DVec3> {
+        match self.step {
+            Step::FirstPoint => vec![],
+            Step::SecondPoint(p) => vec![p],
+            Step::DimensionLine { first, second } => vec![first, second],
+        }
+    }
+
+    fn dimension_placement_pending(&self) -> bool {
+        matches!(self.step, Step::DimensionLine { .. })
+    }
+
     fn on_escape(&mut self) -> CmdResult {
         CmdResult::Cancel
     }

src/modules/annotate/radius_dim.rs

@@ -130,6 +130,23 @@ impl CadCommand for RadiusDimensionCommand {
         CmdResult::Cancel
     }
 
+    /// Points and object picks may come through a paper-space viewport;
+    /// the committed dimension then reports the model measurement.
+    fn measures_through_viewports(&self) -> bool {
+        true
+    }
+
+    fn dimension_acquired_points(&self) -> Vec<DVec3> {
+        match self.step {
+            Step::SelectObject => vec![],
+            Step::DimLine(source) => vec![dvec(source.point_at_angle(source.start_angle))],
+        }
+    }
+
+    fn dimension_placement_pending(&self) -> bool {
+        matches!(self.step, Step::DimLine(_))
+    }
+
     fn on_escape(&mut self) -> CmdResult {
         CmdResult::Cancel
     }