With Multiframe mode, Interpolation doesn't work as expected. #96648
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Reference: blender/blender#96648
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System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.39
Blender Version
Broken: version: 3.0.1, branch: master, commit date: 2022-01-25 17:19, hash:
dc2d180181
Worked: (newest version of Blender that worked as expected)
Short description of error
in edit mode while activating Multiframe mode , Interpolation doesn't work as expected, for example when we select 3 strokes in frame 1 and interpolate them with 1 stroke of 3 strokes in frame 50 (selection with shift ) doesn't work , the interpolation happen between 3 stroke of frame 1 and 2 last drawn stroke of frame 50..
0001-1799.mp4
another example but with other weird result
2022-03-20 14-34-00.mp4
Exact steps for others to reproduce the error
edit mode -> multiframe mode
then interpolate them so the issue
Added subscriber: @hamza-el-barmaki
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Needs User Info'
I wasn't able to cause issue like this. Please provide file with strokes that gives incorrect result.
Richard Antalik (ISS) .here some files with different situation .... note: i activate multifram in edit mode then select strokes by shift +box select then i interpolate sequence
multiframe_3 strokes.blend
multiframe_4 strokes.blend
multiframe_2 strokes works well .blend
multiframe_5 strokes.blend
multiframe_3 strokes.blend1
multiframe_4 strokes.blend1
Added subscriber: @richard-27
Added subscriber: @antoniov
This is not a bug, but a missunderstanding of how works the tool.
IMHO, it seems you don't know enough about grease pencil tools, and it would be better to ask in some artist forum before opening bugs that really aren't.
i see when i do it stroke by stroke using shift and interpolate every time (4 times), but if we have many of stroks like 30 stroke it will be laborious .... and thanks ... i am still learning blender grease pencil and while i study it i expect to have the result based tutorial and experiencing ideas and my expectation based on that, IMHO it seem the first time is a bug because i repetedly do the same experience and i found the same issue by the same way ....and
about that i tested it i do select one by one with holding shift and it does interpolation as selecting by box selection in the two videos ... ()
my result expectation is:
stroke 1-> stroke 4 .
stroke 2-> stroke 4.
stroke 3-> stroke 4 .
stroke 4-> stroke 4 .
by grease pencil project . the creation is easier..
I had to look at the code to see how this works and my conclusion is, that in context of this report this works correctly
Other selection combinations do not seem to produce well defined output.
Since this works as intended, will close this report.
Changed status from 'Needs User Info' to: 'Archived'