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Test Render Materials

I'm a noob looking for best way to animate scenario below... Wrap around heart which beats. The Wrap also inflates and deflates while heart beats. I tried shapekeys, and although wrap is parented to heart, the keys only affect the heart... Any suggestions?

Thanks! Shrinkwrap looks like it might help.. I tried jacking offset to see if it's viable as animation key, and got these results in render... any idea what's causing the artifacting? Face normals are all pointing outwards... (I didn't check vertex or edge norms...)

enter image description here

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  • $\begingroup$ Use a Swrinkwrap modifier on the Wrap $\endgroup$
    – user1853
    Commented Jan 21, 2016 at 17:57
  • $\begingroup$ A parent will not effect other objects, when it is only mesh data that is changing. Parents only follow transformations follow either of the two answers already given, and it will work. $\endgroup$
    – Uncle Snail
    Commented Jan 21, 2016 at 18:03

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Use an armature with two bones, one for the heart and one for the wrap. Make the heart bone the parent of the wrap bone. Now when you scale the heart bone, the wrap will also scale.

enter image description here

You don't need to use weight painting, a simple parent object to bone will work. Parent the heart to the heart bone and the wrap to the wrap bone.

enter image description here

Now animate the scale of the bones -

enter image description here

You could also use shapekeys to give more detail during the pulsing.

Example here

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Perhaps switch to using an armature to animate the heart and the wrap. Then both the heart and the wrap can be controlled by the same armature.

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