Blending animations issue.

So I have 2 blendshape animations embedded to my object (a plane mesh exported from Maya) and I want to interpolate between them. Each animation takes values between 0 to 100. So the overall animation is 0 to 100. The animations deform the mesh.

Depending on where the user pressed I want the animations to be interpolated. Here is my JS script for blending the animations:

Code (csharp):

1.      object.SetBlendShapeWeight(0,hit.point.z*currentLocation);
2.      object.SetBlendShapeWeight(1,(1.00-hit.point.z)*currentLocation);

where hit.point.z is the point on the z axis the user pressed on. It takes values between 0 to 1. Also currentLocation is the overall animation location (0 to 100).

So far so good right? The problem is that when currentLocation >70 and hit.point.z =0.5 then the animated is deformed pretty ugly. The reason is that by adding/interpolating the 2 animations above it deforms the object more than it should be. From my understanding a real blendshape should be like:

Code (csharp):

1. hit.point.z * object.SetBlendShapeWeight(0,currentLocation)

and

Code (csharp):

1. (1.00-hit.point.z)*object.SetBlendShapeWeight(1,currentLocation)

. That would be a true interpolation. In any case I was wondering if you have any ideas on how to tackle this issue. I would really appreciate it.

 

Any help anyone?