Jack Simpson (sazerac)
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User Since
Jul 12 2012, 12:49 PM (331 w, 3 d)

Recent Activity

May 23 2015

Jack Simpson (sazerac) added a comment to T44663: Corrective smooth apply as shape key does not work.

Had a bit more of a look/think about this and deriving the correct shape is not trivial, I think this kind of functionality would make more sense as an extension on what is in the corrective shape keys addon.

May 23 2015, 7:07 AM · Mesh Modeling, BF Blender

May 13 2015

Jack Simpson (sazerac) added a comment to T44663: Corrective smooth apply as shape key does not work.

I can think of a few ways this could be made to work...

  • It could just apply all deform modifiers up until the corrective smooth modifier. (but that will bake the pose in too - which isn't typically what you want)
  • It could calculate the deformation thats being applied to the previous modifier, then apply the deltas to a shape key on the base mesh (using per vertex tangents).

    I'm interested to see how this could work, but its not a software error, moving to design task.
May 13 2015, 11:23 AM · Mesh Modeling, BF Blender

May 11 2015

Jack Simpson (sazerac) created T44663: Corrective smooth apply as shape key does not work.
May 11 2015, 4:17 AM · Mesh Modeling, BF Blender

Mar 31 2015

Jack Simpson (sazerac) added a comment to D1183: Implement the delta mush modifier..

Thanks for all your help with review and fixes.

Mar 31 2015, 11:10 PM

Mar 30 2015

Jack Simpson (sazerac) added a comment to D1183: Implement the delta mush modifier..

@Jack Simpson (sazerac)

The smoothing algorithm seems rather strange (multiplying the edge by its length & accumulating),
is this based on some known good/working smooth method? or is it something you came up with yourself?

I tried some different methods, but found the most simple smoothing method works quite well. rB46f83e7391b637d16d81dc12a2d21bab912c5afd

Its stronger then the one is this patch (2x - 3x),
From my tests with 10 iterations, a factor of 0.5, it gets a good result which requires more iterations with the current method used in this patch.

Its committed to the branch but I didn't include in this diff since its changing behavior.

Mar 30 2015, 12:18 PM

Mar 29 2015

Jack Simpson (sazerac) updated subscribers of T43988: Delta Mush Modifier.

@Campbell Barton (campbellbarton) just looking through your changes on the new branch, looks good, and looks like I have lots of reading on C optimisations to do at some point.

Mar 29 2015, 1:55 AM · BF Blender

Mar 26 2015

Jack Simpson (sazerac) added inline comments to D1183: Implement the delta mush modifier..
Mar 26 2015, 12:51 PM

Mar 23 2015

Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..
  • Change ui range of smoothing factor to positive only
Mar 23 2015, 11:13 AM
Jack Simpson (sazerac) added a comment to T43988: Delta Mush Modifier.

Posted a thread on BA: http://blenderartists.org/forum/showthread.php?366313-Delta-Mush-Modifier

Mar 23 2015, 1:19 AM · BF Blender

Mar 22 2015

Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..
  • Addressed a few more review comments - turns out I already know how long the vectors I am using form normal weighting are - I normalised them already.
Mar 22 2015, 10:49 PM
Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..
  • More fixes, including removing the DerivedMesh copy
Mar 22 2015, 1:50 PM
Jack Simpson (sazerac) added a comment to D1183: Implement the delta mush modifier..

@Campbell Barton (campbellbarton), I have addressed you comments so far, and I was wondering, is there a simpler way of setting up the bind button in the UI that defining a whole operator just to essentially flip a bit?

Mar 22 2015, 1:21 AM
Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..
  • Address some more review comments, including moving invalidation of deltas to rna callbacks
Mar 22 2015, 1:09 AM

Mar 21 2015

Jack Simpson (sazerac) added a comment to T43988: Delta Mush Modifier.

Thanks. Yeah I'm planning on making a thread on BA when I got the code fairly stable and sorted out.

Mar 21 2015, 6:59 AM · BF Blender
Jack Simpson (sazerac) added a comment to T43988: Delta Mush Modifier.

Update the patch with boundary pinning.

Mar 21 2015, 1:57 AM · BF Blender
Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..
  • Address some review comments and add in pinning for boundary verts.
Mar 21 2015, 1:51 AM

Mar 19 2015

Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..
  • fix smoothing
Mar 19 2015, 9:59 PM
Jack Simpson (sazerac) added a comment to T43988: Delta Mush Modifier.

Did a big tidyup and a bunch of improvements.

Mar 19 2015, 1:52 PM · BF Blender
Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..

Massive rework of modifier.

  • Changed to use first face/loop tangent to calculate tangent space
  • Now directly calculates tangent space
  • Now uses new edge weighted smoothing method
  • Now stores rest positions of vertices and re-calculates the deltas when smoothing params change
  • Vertex groups now only apply to the smoothing, and deltas are re-calculated when weights change (this should lead to a more intuitive effect)
  • smoothing is now always displayed when not bound
  • when bound, there is now a toggle to display only the effects of smoothing
Mar 19 2015, 1:47 PM

Mar 18 2015

Jack Simpson (sazerac) added a comment to T43988: Delta Mush Modifier.

Thanks, I just had a quick shot with that and initial tests look good, no spinning around normals of the deltas so far.

Mar 18 2015, 10:24 PM · BF Blender

Mar 17 2015

Jack Simpson (sazerac) added a comment to T43988: Delta Mush Modifier.

Didn't get as far as I hoped with changes tonight, so no new patch.

Mar 17 2015, 1:38 PM · BF Blender

Mar 16 2015

Jack Simpson (sazerac) added a comment to T43988: Delta Mush Modifier.

bobizib, thanks for the link to the paper, I'll have a read and see about trying that smoothing alg.

Mar 16 2015, 10:23 PM · BF Blender
Jack Simpson (sazerac) added a comment to D1183: Implement the delta mush modifier..

Added an updated diff with warning stuff + smoothing method change

Mar 16 2015, 12:00 PM
Jack Simpson (sazerac) updated the diff for D1183: Implement the delta mush modifier..
  • Campbell Barton's warning fixup + a couple of changes
  • Change smoothing method to use normal smooth modifier
Mar 16 2015, 11:58 AM
Jack Simpson (sazerac) added a comment to D1183: Implement the delta mush modifier..

Thanks Matt Heimlich,
Interesting about the smoothing mode. I'll take a look tonight when I get home from work. I did notice that the smoothing effect did seem to end up being pretty localised.

Mar 16 2015, 2:32 AM

Mar 14 2015

Jack Simpson (sazerac) retitled D1183: Implement the delta mush modifier. from to Implement the delta mush modifier..
Mar 14 2015, 4:34 AM
Jack Simpson (sazerac) created T43988: Delta Mush Modifier.
Mar 14 2015, 4:31 AM · BF Blender