Shape Keys Behaving Like a Duplicate of Previous Key #67185

New Issue

Abid Maqbool · 2019-07-18T18:37:15+02:00

Abid Maqbool commented

2019-07-18 18:37:15 +02:00

System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: AMD Radeon HD 8400 / R3 Series ATI Technologies Inc. 4.5.13399 Core Profile Context 15.200.1065.0

Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-16 23:38, hash: 4a5e046c92
Worked: (optional)

Short description of error
When I create a new key, It will be automatically becomes like duplicate of previous key. The expected behavior should be it should be completely new (and add effects on all previous key values).

Exact steps for others to reproduce the error
See the gif

This is working .blend where the prob exists.
Shape Keys Prob.blend

**System Information** Operating system: Windows-10-10.0.17134 64 Bits Graphics card: AMD Radeon HD 8400 / R3 Series ATI Technologies Inc. 4.5.13399 Core Profile Context 15.200.1065.0 **Blender Version** Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-16 23:38, hash: `4a5e046c92` Worked: (optional) **Short description of error** When I create a new key, It will be automatically becomes like duplicate of previous key. The expected behavior should be it should be completely new (and add effects on all previous key values). **Exact steps for others to reproduce the error** See the gif ![Shape Keys Prob.gif](https://archive.blender.org/developer/F7616957/Shape_Keys_Prob.gif) This is working .blend where the prob exists. [Shape Keys Prob.blend](https://archive.blender.org/developer/F7616963/Shape_Keys_Prob.blend)

Abid Maqbool commented

2019-07-18 18:37:15 +02:00

Added subscriber: @AbidMaqbool

blender-admin commented

2019-07-18 18:37:15 +02:00

#88759 was marked as duplicate of this issue

blender-admin commented

2019-07-18 18:37:15 +02:00

#68491 was marked as duplicate of this issue

Abid Maqbool commented

2019-07-18 19:07:57 +02:00

On more example where the prob, exists:

Shape Keys Prob 1.blend

On more example where the prob, exists: [Shape Keys Prob 1.blend](https://archive.blender.org/developer/F7617005/Shape_Keys_Prob_1.blend) ![Shape Keys Prob 1.gif](https://archive.blender.org/developer/F7617013/Shape_Keys_Prob_1.gif)

Philipp Oeser commented

2019-07-19 09:51:19 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2019-07-19 09:51:19 +02:00

Can confirm in these files, but cannot reproduce from scratch.... checking further

Philipp Oeser commented

2019-07-19 10:28:31 +02:00

note: seems to go fine if you select the Basis shapekey, go into editmode, leave editmode, then add a new Shapekey...
note: same thing happens in 2.79 actually with this mesh...

note: seems to go fine if you select the Basis shapekey, go into editmode, leave editmode, then add a new Shapekey... note: same thing happens in 2.79 actually with this mesh...

Abid Maqbool commented

2019-07-19 13:13:08 +02:00

@lichtwerk Somehow reproduce the error:

Normally it's working as expected. But if we change the geometry where in the key (where it's effects the shape position it's causes the prob. Actually, I have to add more geometry to better the shape which caused the prob.
I think Blender should handles geometry for prev shapes automatically.
Wait I 'am recording the onscreen video and .blender which will produce the error...

@lichtwerk Somehow reproduce the error: Normally it's working as expected. But if we change the geometry where in the key (where it's effects the shape position it's causes the prob. Actually, I have to add more geometry to better the shape which caused the prob. I think Blender should handles geometry for prev shapes automatically. Wait I 'am recording the onscreen video and .blender which will produce the error...

Abid Maqbool commented

2019-07-19 13:19:39 +02:00

Shape Key Prob Figured Out.blend

Better to handling geometry automatically or disable geometry adding/removing...

[Shape Key Prob Figured Out.blend](https://archive.blender.org/developer/F7618078/Shape_Key_Prob_Figured_Out.blend) Better to handling geometry automatically or disable geometry adding/removing... ![Shape Keys Prob Figured Out.gif](https://archive.blender.org/developer/F7618080/Shape_Keys_Prob_Figured_Out.gif)

Philipp Oeser commented

2019-07-19 13:28:35 +02:00

Ah, thx for tracking it down!

I doubt this (adding geometry afterwards) is officially fully supported, but let me check...

Ah, thx for tracking it down! I doubt this (adding geometry afterwards) is officially fully supported, but let me check...

Philipp Oeser commented

2019-07-19 13:49:33 +02:00

Added subscribers: @mont29, @ideasman42, @brecht

Philipp Oeser commented

2019-07-19 13:49:33 +02:00

2.79 had the same problem.
note: you can should be able to fix your "broken" shapekeys in editmode using Vertex > Blend From Shape? See https://blender.stackexchange.com/questions/19296/can-i-fix-broken-shape-keys-after-editing-basis
This seems to work just fine in your files...

ehm, @brecht, @mont29, @ideasman42: bug or not?
So if the modeling additions/removals get propagated to the Basis shapekey [which I assume is the basis for new shapekeys as well?], then what could we do to improve?
Do a correction after each modeling operation [this doesnt sound like a nice thing to do]?
Propageate this to the Basis with the "undeformed" coordinates?
Before blathering further, I should be reading some code here...

2.79 had the same problem. note: you can should be able to fix your "broken" shapekeys in editmode using `Vertex` > `Blend From Shape`? See https://blender.stackexchange.com/questions/19296/can-i-fix-broken-shape-keys-after-editing-basis This seems to work just fine in your files... ehm, @brecht, @mont29, @ideasman42: bug or not? So if the modeling additions/removals get propagated to the Basis shapekey [which I assume is the basis for new shapekeys as well?], then what could we do to improve? Do a correction after each modeling operation [this doesnt sound like a nice thing to do]? Propageate this to the Basis with the "undeformed" coordinates? Before blathering further, I should be reading some code here...

Abid Maqbool commented

2019-07-19 14:21:21 +02:00

@lichtwerk Thanks, for giving the alt solution.
I already applied the alt solution, like duplicating the object hiding one and showing other..

@lichtwerk Thanks, for giving the alt solution. I already applied the alt solution, like duplicating the object hiding one and showing other..

Campbell Barton commented

2019-07-24 01:54:43 +02:00

Changed status from 'Open' to: 'Archived'

Campbell Barton closed this issue

2019-07-24 01:54:43 +02:00

Campbell Barton self-assigned this 2019-07-24 01:54:43 +02:00

Campbell Barton commented

2019-07-24 01:54:43 +02:00