fix bug with the b-spline

cschen1205 · May 30, 2017 · 3aa7f10 · 3aa7f10
1 parent 233d311
commit 3aa7f10
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/example.html b/example.html
@@ -16,7 +16,7 @@
       });
       for(var i=0; i < 20; ++i){
           var x = i * 50;
-          var y = Math.sin(x * Math.PI / 200) * 100;
+          var y = Math.sin(x * Math.PI / 200) * 100 + 140;
           bspline.addWayPoint({x : x, y: y, z: 0});
       }
 

diff --git a/src/jsspline.js b/src/jsspline.js
@@ -73,7 +73,7 @@ var jsspline = jsspline || {};
         var point = pt1.scale(-1).add(pt2.scale(3)).minus(pt3.scale(3)).add(pt4).scale(u*u*u / 6);
         point = point.add(pt1.scale(3).minus(pt2.scale(6)).add(pt3.scale(3)).scale(u*u / 6));
         point = point.add(pt1.scale(-3).add(pt2.scale(3)).scale(u / 6));
-        point = point.add(pt1.add(pt2.scale(4)).add(pt3)).scale(1.0 / 6);
+        point = point.add(pt1.add(pt2.scale(4)).add(pt3).scale(1.0 / 6));
         return point;
     };