From a84da9cae1cf918beb7d4748e8d9e45b6bceb99c Mon Sep 17 00:00:00 2001
From: Val Erastov <xibyte@gmail.com>
Date: Fri, 15 Feb 2019 19:37:31 -0800
Subject: [PATCH] add ellipse support in 3d

---
 web/app/cad/sketch/sketchModel.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/web/app/cad/sketch/sketchModel.js b/web/app/cad/sketch/sketchModel.js
index 6a4762bc..cad1c46e 100644
--- a/web/app/cad/sketch/sketchModel.js
+++ b/web/app/cad/sketch/sketchModel.js
@@ -249,6 +249,13 @@ export class Ellipse extends SketchPrimitive {
   tessellateImpl(resolution) {
     return EllipticalArc.tessEllipticalArc(this.ep1, this.ep2, this.ep1, this.ep1, this.r, resolution);
   }
+
+  toVerbNurbs(tr) {
+    const xAxis = this.ep2.minus(this.ep1)._multiply(0.5);
+    const yAxis = new Vector(xAxis.y, xAxis.x)._normalize()._multiply(this.r) ;
+    const center = this.ep1.plus(xAxis);
+    return new verb.geom.Ellipse(tr(center).data(), tr(xAxis).data(), tr(yAxis).data());
+  }
 }
 
 export class Contour {