unwanted geometry changes on changing shape keys

posted to: Detailing the Ears
Hello! I am getting an error at corner of eye, when I am trying to change the shape key I get unwanted geometry changes mainly where the geometry overlaps like the corner of eye, corner of lips and at tight creases. (silly bug fix does not work)
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  • Omar Domenech replied

    Can you post screenshots or a screengrab video? Just to get a better idea of what's going on. 

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  • Martin Bergwerf replied

    Hi Arshdeep AArsh ,

    The corner of the eye is a bit funky as is with overlapping Geometry,, (even without the Shapekey):

    Eyes.png

    Maybe you can Smooth that area and redo the details?

    The mouth corner only has two spikes, I think; you should try to carefully remove them by clicking on the points a few times with the Smooth Brush (full Strength) (you need to get inside the model at some point):

    Mouth.png

    Furthermore: try to avoid switching between Multires Levels. Also (I am not sure about this one) I would try not to (simple) Save your File anymore: only Save iIncrementally.

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  • Arshdeep Singh(Arsh) replied

    I already fixed the mouth but the problem is with the eye, When I try to fix it with smooth brush it works but when we switch between shape keys it automatically generates spikes again every time (this is not the issue with mouth).

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  • Arshdeep Singh(Arsh) replied

    And Thankyou Martin Bergwerf for helping me every time.

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  • Martin Bergwerf replied

    Hm,

    I tried smoothing the eye corner and with me it doesn't create spikes, when then switching between the Shapekeys...

    I don't know, maybe you didn't smooth enough?...try smoothing, with Face Orientation Overlay on...

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  • Arshdeep Singh(Arsh) replied

    can you tell what blender version you are using

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  • Martin Bergwerf replied

    I tried that on an 'old' one: 3.6.1, but there shouldn't be any difference with 3.6.5

    But this sort of thing can be really tricky to solve. I had about 30 spikes on both the mouth and the eyes (on my own model)....I managed to fix them eventually, but it was a lot of going back and forth between smoothing, switching Shapekey and smoothing again...In my experience, smoothing, then Saving and then switching seemed to make it worse.

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  • Arshdeep Singh(Arsh) replied

    man, sorry for disturbing you but can you send me a video of you solving it. Because I can't figure it out.

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  • Arshdeep Singh(Arsh) replied

    please use my .blend file for this

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  • Martin Bergwerf replied

    AArsh,

    Sure, I can do that, but it'll have to wait until tomorrow.

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  • Arshdeep Singh(Arsh) replied

    Martin Bergwerf ,

    Thanks

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  • Martin Bergwerf replied

    Sorry arshdeep AArsh

    I hadn't paid attention yesterday and was looking for huge spikes. The eyes closed doesn't get completely clean, but, as long as you are not going to pose the portret with closed eyes, the result should be fine; the main part of the eyelid is already detailed and the edge can be done with open eyes, I think.

    This is what I got after Smoothing (full Strength of the Brush):

    Head_1.png

    And this is what that looks like with the Shape Key enabled:

    Head_2.png

    I didn't think it was worth making a video, it's really only a few strokes with the Smooth Brush (done with the Mouse even).


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  • Arshdeep Singh(Arsh) replied

    Yes, but the real problem was when you try to change shape keys it creates errors automatically. (It would be really helpful if can the solution to make it ok) (It is still ok if not)

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  • Martin Bergwerf replied

    I don't know of a solution to this problem. Maybe (hopefully) the bug will be fixed at some point, but I can imagine, that it's not an easy bug to fix.

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  • Arshdeep Singh(Arsh) replied

    Hey Martin, 

    I solved the problem.

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  • Arshdeep Singh(Arsh) replied

    It happens when you go too far from the base mesh while sculpting in multires. There is brush called Multires Displacement eraser in the sculpt mode which you can use instead of using smooth brush

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  • Arshdeep Singh(Arsh) replied

    https://drive.google.com/file/d/155jmCP1bq4caK_PlJT5r2b6Btf3zm6oc/view?usp=sharing


    Here is the link for the video of me solving it.

    You can send this to someone if it happens to someone else and I will also add a comment to share how to solve it. 

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