readme updated new info
@@ -84,6 +84,7 @@ There is also a user defined stopping condition. When met, this will immediately
```
The state of the octopus is available in `shearable_rod`. The octopus consists of a series of 121 nodes. Nodes 0-49 relate to one arm, nodes 50-70 relate to the head, and nodes 71-120 relate to the second arm. `shearable_rod.position_collection` returns an array with entries relating to the position of each node.
+The state of the target object is available in `rigid_body`.
It is important to properly define the activation function. It consists of a list of lists defining the activation of the two arms in each of the the three modes of deformation. The activation function should be a list with three entries for the three modes of deformation. Each of these entries is in turn a list with two entries, which are arrays of the basis function activations for the two arms.
