Vectrosity line smoothing issue.

Hi, I am using Vectrosity for drawing and I have some unexpected behaviour when try to draw symmetric smooth line. I have 5 points - two exteme points (center of 2 spheres), two "neighbors" of extreme points and middle point. I want to draw something like this:

![alt text][1]

I created 5 points, and array with 4 width values.

When I draw line without smoothing, all is ok: But when I enabled smoothing (line.smoothWidth), line began to draw wrong: (2 - middle point is ok, 1 point is ok, 3 point - wrong). Please see the picture:

![alt text][2]

I am sure that all point positions are correctly (I created sphere object in this points and all looks like on picture without smoothing - I mean that all poins on their place).

Here is my code:

 //create line
 VectorLine line = new VectorLine("Line", new Vector3[]
             {
                 new Vector3(0, 0, 0), //first exteme point
                 new Vector3(0, 0, 0), //segment near first exteme point
                 new Vector3(0, 0, 0), //middle point
                 new Vector3(0, 0, 0), //segment near second exteme point
                 new Vector3(0, 0, 0)  //second exteme point
             },
             Color.black,
             null,
             getLineMaxDynamicsWidth(),
             LineType.Continuous);
 
 .........................
 ...Update point positions...
 .......................                  
 //update width
 float width = 40;
 var widths = new float[] { width , width/2f, width/2f, width};
 Vector.SetWidths(line, widths);
 line.smoothWidth = true;
 Vector.Active(line, true);
 Vector.DrawLine3D(line);

 

I am using Vectrosity 1.4.2.

Can you please help me with this issue? [1]: /storage/temp/8350-whatiwanttodraw.png [2]: /storage/temp/8352-vectrositywithandwithoutsmoothing.png