2009

Table Of Contents
The numerical field for Translate X is dimmed indicating that the channel
is locked. If you try to move ArmControl in X, it will not be possible
unless you unlock the Translate X channel.
To lock the Rotate X and Z channels for SwivelBase
1 In the Hypergraph, select only the SwivelBase node.
2 Open the Channel Box to view the rotation channels for SwivelBase.
3 Set all Translate or Rotate channels to 0, if they are not already.
4 In the Channel Box, select the Rotate X and Rotate Z channels by
control-clicking on their names.
5 Right click on either of the selected names.
A drop-down menu appears.
6 From the drop-down menu, select Lock Selected.
To confirm that the Rotate X & Z channels are locked
1 In the Hypergraph, ensure only the SwivelBase node is selected.
2 In the view, select Panels > Orthographic > top.
3 In the view, select Shading > Smooth Shade All.
4 Dolly the top view so you can fully view the mechanical arm as shown
below.
5 Using the ChannelBox, rotate SwivelBase by typing 45 in the Rotate Y
channel and pressing Enter.
Limiting the range of motion of an IK system | 285