add resolve_with

src/entity.rs

@@ -34,6 +34,16 @@ impl<T: Clone, TRegion: Region<T> + Clone> Var<T, TRegion> {
         &self.value
     }
 
+    pub fn resolve_with(&mut self, eqns: &Eqns) -> bool {
+        let resolved_constraints = self.constraints.clone().evaluate_with(eqns).simplify();
+        if let Some(n) = resolved_constraints.nearest(&self.value) {
+            self.value = n;
+            true
+        } else {
+            false
+        }
+    }
+
     pub fn evaluate_with(&mut self, eqns: &Eqns) -> bool {
         self.constraints = self.constraints.clone().evaluate_with(eqns).simplify();
         if let Some(n) = self.constraints.nearest(&self.value) {

src/main.rs

@@ -48,7 +48,7 @@ fn main() {
     let c4 = relation::PointAngle::new_vertical(p1.clone(), p2.clone());
     let c3 = relation::PointAngle::new_horizontal(p2.clone(), p3.clone());
     let c2 = relation::AlignedDistance::new_vertical(p1.clone(), p2.clone(), 12.);
-    let c5 = relation::PointAngle::new(p1.clone(), p3.clone(), Rot2::from_angle_deg(45.));
+    let c5 = relation::PointAngle::new(p1.clone(), p3.clone(), Rot2::from_angle_deg(0.572938698));
     let mut relations: Vec<Box<dyn Relation>> =
         vec![/*Box::new(c1),*/ Box::new(c2), Box::new(c3), Box::new(c4), Box::new(c5)];
     let mut constrained: Vec<Box<dyn Relation>> = Vec::new();
@@ -94,7 +94,7 @@ fn main() {
     let e2 = eqn::Eqn::new(eqn::Expr::Unkn(u2), eqn::Expr::Const(1.));
     let eqns = eqn::Eqns(vec![e1, e2]);
     for p in &mut points {
-        p.borrow_mut().pos.evaluate_with(&eqns);
+        p.borrow_mut().pos.resolve_with(&eqns);
     }
     print_points(&points);
 }