Dear BlenderArtists,
I have three questions, and after scouring the internet I am unable to find the answers (perhaps I do not know what to search for).
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Rigging: I am working on some dinosaur models, which use the IK-Chain for leg (ie/ chicken leg). Most tutorials which explain rigging use Human legs, which use the foot bone to control the IK and then the foot is kept flat on horizon (x-axis). However, with the chicken-leg, the “foot” bone is higher and the leg is mostly on tip-toes, which should stay flat on the horizon. When I move the Body-Bone (above hips), i find my legs wobble about and do not stay flat on x-axis, however the ankle bone is fixed. Is there a way to correct this so the dinosaur’s tip-toes stay on x-axis?
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The other question I have, which is more about animation and posing. If i model my dinosaur in a non-neutral position, can I rig and then create a new resting pose, from which I can create action constraints etc? for example, I want to create an action constraint for the Toes to go from hyper-extension to curled. I have modelled the dinosaur in hyperextension pose, and would like the “neutral” pose to be flat-foot. Is this possible to do? or do i need to model the dinosaur in my desired neutral pose (ie/ start from scratch)?
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Animation; is there a way to set a horizon line (ie/ using a plane or mesh), and set bones (ie/ last toes) so that they cannot go below this barrier - always keeping flat footed when animating a walk cycle for example? I find that when I try to eye-ball the horizon line using key frames, there is too much wobbling as a result of the wobbles in Question 1.
Thank you all for your help and advice, Here are some photo’s of my rig (edit mode vs rig; moving the body-bone to see impact of ankle/foot, x-axis):
(I modeled as per wire-frame, and by using action-constraints I have modified the neutral pose to bone pose)
(is there a way to make neutral pose have tip-toes flat on x-axis)
(is there a way to make the toes (tip-toes) respond to the x-axis spending on how i move the Body-bone)