prepare for ellipse constraints

web/app/sketcher/constr/ANConstraints.js

@@ -180,6 +180,27 @@ export const ConstraintDefinitions = {
 
   },
 
+  PointOnEllipse: {
+    id: 'PointOnEllipse',
+    name: 'Point On Ellipse',
+
+    defineParamsScope: ([pt, ellipse], callback) => {
+      ellipse.visitParams(callback);
+      callback(new Param(0, 't'));
+      pt.visitParams(callback);
+    },
+
+    collectPolynomials: (polynomials, [p1x,p1y, p2x,p2y, r, t, px, py]) => {
+      const ellipsePoly = (p, t, p0, p1, p2, p3) => new Polynomial()
+        .monomial(-1);
+
+
+      polynomials.push(ellipsePoly());
+      polynomials.push(ellipsePoly());
+    },
+
+  },
+
   PointInMiddle: {
     id: 'PointInMiddle',
     name: 'Middle Point',

web/app/sketcher/shapes/ellipse.js

@@ -1,10 +1,7 @@
-import {Ref} from './ref'
 import {SketchObject} from './sketch-object'
-import {Constraints} from '../parametric'
 
 import * as math from '../../math/math';
-import {Circle} from "./circle";
-import {EndPoint} from "./point";
+import {Param} from "./param";
 
 export class Ellipse extends SketchObject {
 
@@ -14,9 +11,9 @@ export class Ellipse extends SketchObject {
     this.ep2 = ep2;
     this.addChild(this.ep1);
     this.addChild(this.ep2);
-    this.r = new Ref(0);
+    this.r = new Param(0, 'R');
+    this.r.enforceVisualLimit = true;
     this.r.set(this.radiusX * 0.5);
-    this.r.obj = this;
   }
 
   recoverIfNecessary() {

web/app/sketcher/shapes/param.js

@@ -22,4 +22,8 @@ export class Param {
     return this.debugSymbol + this.id;
   }
 
+  visitParams(callback) {
+    callback(this);
+  }
+
 }

web/app/sketcher/tools/ellipse.js

@@ -111,7 +111,7 @@ export class EllipseTool extends Tool {
   }
 
   solveRequest(rough) {
-    this.solver = this.viewer.parametricManager.prepare([this.ellipse.r]);
-    this.solver.solve(rough, 1);
+    this.viewer.parametricManager.prepare([this.ellipse.r]);
+    this.viewer.parametricManager.solve(rough);
   }
 }