Feature request - non relative shape keys

This topic has 5 replies, 4 voices, and was last updated 2 months, 2 weeks ago by kdv.

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2024-02-06 at 9:04 pm #70156
xeon
Customer
Shape keys are great but relative shape keys are limiting. Any chance we can get non relative shape keys?

Relative keys that support changing the “Relative To” would also solve the same problem.
- This topic was modified 2 months, 3 weeks ago by xeon.
Xeon
Route 66 Digital
Interactive Solutions - https://www.r66d.com
Tutorials - https://www.xeons3dlab.com
2024-02-07 at 6:30 am #70169

Alexander Kovelenov
Staff

Hi,
Unfortunately, only the mode provided by default can be considered as “classic morhing”, i.e. it can be rendered in realtime engine in the most optimal way. Other modes will require not only refactoring of vertex shaders, but need more data provided to the shader and such will be less efficient

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2024-02-07 at 5:44 pm #70210

visualizer
Customer

Yeah! it would be a one more next level feature. Hope in future sometimes we get it

2024-02-08 at 3:59 am #70225

kdv
Participant

Show an example of what you want to get. In Blender.

Puzzles and JS. Fast and expensive.

If you don’t see the meaning in something it primarily means that you just don’t see it but not the absence of meaning at all.

2024-02-08 at 5:43 am #70231

xeon
Customer

The problem with Relative Shape Keys is not that you cant do it. The problem is that is it can be excessively difficult depending and worse time consuming on the number of keys you have and the order and timing of the shape shifts. The current method requires you to key frame not only the shapekey that you want to shift but it requires you to key others shape keys as well, if not all the other shape key values to 0 if you need a specific order.

With relative shape keys you have you can sequence all your shape keys in order regardless of the number of shape keys and use only two key frames to animate the entire sequence.

Here is a project file with a blend file that has the two cubes morphing one using relative and one with relative turned off. https://v3d.net/st0

The problem is not really apparent when you only have a handful of shape key targets but it compounds quickly when you have close to 100 or more. Its just a time consuming waste of time.

On the other hand the if you have a circular shape or a shape that overhangs another and you want to key between them without it appearing a linear mess…you it would be great if we could just set the Basis of each keyframe then we wouldn’t need non-relative.

But for now..we are stuck with a ton of keyframes and a ton of time to get it done.

If you have another solution….let me know.

Xeon
Route 66 Digital
Interactive Solutions - https://www.r66d.com
Tutorials - https://www.xeons3dlab.com

2024-02-08 at 12:05 pm #70275

kdv
Participant

three.js doesn’t support that type of shapekeys at all. but you can use export to .mdd format to speed up creating animations compatible with three.js. it works.

Puzzles and JS. Fast and expensive.

If you don’t see the meaning in something it primarily means that you just don’t see it but not the absence of meaning at all.
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