4
$\begingroup$

I am trying out the various bone constraints in Blender. To further my understanding I am attempting to create the motion of a leg following the pedal of a bicycle. Please refer the image of the simple setup I am attempting.

bone setup

I have parented the 'Pedal' to the 'Disc' and have animated a rotation of the 'Disc' in the direction of the Blue arrow.

I am now trying to make the 'Feet' (oops! must be 'Foot') bone to follow the path of the 'Pedal' with an offset. I believe that after achieving this, adding an IK constraint to the 'Feet' bone and affecting all the way to 'Thigh' will give me the necessary motion. However, I am unable to achieve this. I am using Blender 2.7 on Linux.

Attempting to 'Copy Location' constraint on the 'Feet' object while specifying the target as 'Pedal' does not work.

$\endgroup$
3
  • 2
    $\begingroup$ I don't know if this is relevant, but the calf needs to be at least as long as the thigh. $\endgroup$
    – ruckus
    Apr 5, 2015 at 20:10
  • $\begingroup$ Hi Vince, Your point is valid. It seems to work for a few different ratios, but to look natural the lengths need to be similar if not identical. $\endgroup$
    – pixelhaze
    Apr 7, 2015 at 15:27
  • $\begingroup$ Yes they do, and forgive me if I'm wrong, but the thigh seems to stretch diagonally across 2 BU while the calf doesn't look like it can even spen 2BU traight on. $\endgroup$
    – ruckus
    Apr 7, 2015 at 15:36

1 Answer 1

3
$\begingroup$

the bone is connected to its parent which constraint its location also leaving it parented will create some problems when using it as IK terget :

  • in edit mode select the last bone and remove parent and clear connected

enter image description here

you can use the copy location constraint on the bone now and set it as IK target

enter image description here

$\endgroup$
0

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .