lucas veber (lucky3)
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User Since
Nov 5 2004, 8:22 PM (731 w, 6 d)

Recent Activity

Sep 30 2018

lucas veber (lucky3) added a comment to T56883: Incorrect bones matrix calculation when exporting to Fbx.

Glad to hear it's working fine in 2.8, sure I totally understand 2.79 is no more developed.

Sep 30 2018, 5:29 PM · Import/Export, Addons

Sep 23 2018

lucas veber (lucky3) added a comment to T54118: FBX export of armature using Spline IK looks very wrong.

The main problem in this scene is the cyclic dependency, that is likely introducing issues when it comes to animation baking.
It's a common problem with Spline IK constraints. You can open the Blender console to see the error log, and when moving the rig bones, there's also a one frame lag which is due to the cyclic dependency issue.
The dependency graph is being re-written for Blender 2.8 to avoid this (as far as I know), for now only this kind of rig setup should be used with IK Spline constraints:
https://blender.stackexchange.com/questions/35398/rigging-question-about-spline-ik-and-having-all-controls-on-one-armature

Sep 23 2018, 11:52 PM · Import/Export, Addons
lucas veber (lucky3) added a comment to T54118: FBX export of armature using Spline IK looks very wrong.

Seems like a scale/stretch related issue? If so, it's not a bug, Fbx does not support it: the scale value of each bone inherit the scale of the parent bone.

Sep 23 2018, 3:02 PM · Import/Export, Addons
lucas veber (lucky3) added a comment to T56883: Incorrect bones matrix calculation when exporting to Fbx.

I've found a workaround for this bug.
Decomposing then recomposing the bone matrix fixes it magically in the fbx_utils.py file.

Sep 23 2018, 2:58 PM · Import/Export, Addons
lucas veber (lucky3) created T56883: Incorrect bones matrix calculation when exporting to Fbx.
Sep 23 2018, 2:52 PM · Import/Export, Addons

Mar 27 2018

lucas veber (lucky3) added a comment to T53908: Fbx export: random, weird bones rotation artefact.

While praying for this bug not to be forgotten in the dark, i've simplified at maximum the example blend file (attached) to help. It now only contains one mesh and two bones. When exporting to Fbx and importing in other apps, such as Unity, "bone2" is imported with Rot X = 179.8, instead of -90.
Rotating in Edit Mode bone2 1 or 2 degrees in Blender fixes the issue. However it's not a clean solution, it may happen in other situations. Seems to happen when a bone is making 180 degrees x-axis angle with its parent.
After further investigations with the Fbx exporter code, tracking the exported rotations values seems to output correct values. However it's the way these values are read in other app that is the problem. Likely to be an euler issue, if only Fbx used quaternions...

Mar 27 2018, 1:30 PM · Import/Export, Addons

Jan 31 2018

lucas veber (lucky3) added a comment to T53908: Fbx export: random, weird bones rotation artefact.

Sure thing. Actually it's the same issue in Maya in case you're able to test it. Haven't tested with 3dsmax but i'd assume it may be the same.
Here is attached a screenshot.

Jan 31 2018, 9:39 PM · Import/Export, Addons

Jan 26 2018

lucas veber (lucky3) created T53908: Fbx export: random, weird bones rotation artefact.
Jan 26 2018, 12:31 AM · Import/Export, Addons

Oct 6 2017

lucas veber (lucky3) added a comment to T53007: OpenSubdiv + transparency = artefact/crashes.

Ok. Good luck for 2.8 then!

Oct 6 2017, 10:18 AM · BF Blender

Oct 5 2017

lucas veber (lucky3) created T53007: OpenSubdiv + transparency = artefact/crashes.
Oct 5 2017, 6:16 PM · BF Blender

Jul 5 2017

lucas veber (lucky3) added a comment to T51759: Fluid simulation. An outflow mesh doesn't remove additional fluid mesh (Generated by Fluid Particles option).

Thank you Brecht! This being my first blender patch, I feel very proud :-)
Cheers

Jul 5 2017, 11:26 PM · Physics, BF Blender

Jun 21 2017

lucas veber (lucky3) added a comment to T51759: Fluid simulation. An outflow mesh doesn't remove additional fluid mesh (Generated by Fluid Particles option).

Here is the patch:
https://developer.blender.org/D2719

Jun 21 2017, 9:30 PM · Physics, BF Blender
lucas veber (lucky3) created D2719: Fix for T51759.
Jun 21 2017, 9:29 PM
lucas veber (lucky3) claimed T51759: Fluid simulation. An outflow mesh doesn't remove additional fluid mesh (Generated by Fluid Particles option).

Sorry it's my first bug fixing time, i'm not sure to do it right.
I have a patch for this, can I claim this task?

Jun 21 2017, 8:50 PM · Physics, BF Blender

Jun 2 2017

lucas veber (lucky3) added a comment to T51406: Ik + Stretch + High Unit Scale + Apply Scale = incorrect results.

I understand, but as explained scaling this high is necessary to export to .fbx for Unreal Engine... Though it's possible to reduce the scale, would have been nice to handle these high scale units...

Jun 2 2017, 12:20 PM · Animation, BF Blender

May 4 2017

lucas veber (lucky3) created T51406: Ik + Stretch + High Unit Scale + Apply Scale = incorrect results.
May 4 2017, 12:47 AM · Animation, BF Blender

Mar 21 2017

lucas veber (lucky3) added a comment to T51018: Appending a rigged character crash Blender since 2.78a.

Confirmed, work with the latest build. Thanks.

Mar 21 2017, 6:13 PM · BF Blender
lucas veber (lucky3) added a comment to T51018: Appending a rigged character crash Blender since 2.78a.

Sorry.
I thought since it resulted in a crash, and other people reported me the same problem, it was worth setting it high priority.
Thanks for any fix :)

Mar 21 2017, 11:34 AM · BF Blender
lucas veber (lucky3) triaged T51018: Appending a rigged character crash Blender since 2.78a as High priority.
Mar 21 2017, 10:10 AM · BF Blender
lucas veber (lucky3) updated the task description for T51018: Appending a rigged character crash Blender since 2.78a.
Mar 21 2017, 10:09 AM · BF Blender
lucas veber (lucky3) created T51018: Appending a rigged character crash Blender since 2.78a.
Mar 21 2017, 10:08 AM · BF Blender

Jan 28 2017

lucas veber (lucky3) added a comment to T50526: Removing drivers through python error.

My bad, sorry for the misunderstanding. Thanks for correcting.

Jan 28 2017, 1:01 PM · BF Blender

Jan 25 2017

lucas veber (lucky3) created T50526: Removing drivers through python error.
Jan 25 2017, 4:00 PM · BF Blender

Oct 20 2016

lucas veber (lucky3) added a comment to T49797: Cycles Motion Blur + python bpy.context leads to error and VRAM overload.

Thanks for quick fix Sergey!

Oct 20 2016, 5:31 PM · Python, BF Blender

Oct 19 2016

lucas veber (lucky3) updated the task description for T49797: Cycles Motion Blur + python bpy.context leads to error and VRAM overload.
Oct 19 2016, 7:49 PM · Python, BF Blender
lucas veber (lucky3) updated the task description for T49797: Cycles Motion Blur + python bpy.context leads to error and VRAM overload.
Oct 19 2016, 7:48 PM · Python, BF Blender
lucas veber (lucky3) created T49797: Cycles Motion Blur + python bpy.context leads to error and VRAM overload.
Oct 19 2016, 7:48 PM · Python, BF Blender

Sep 11 2016

lucas veber (lucky3) renamed T49323: Ineffective bone roll calculation with low rig scale from Innefective bone roll calculation with low rig scale to Ineffective bone roll calculation with low rig scale.
Sep 11 2016, 4:33 PM · BF Blender
lucas veber (lucky3) updated the task description for T49323: Ineffective bone roll calculation with low rig scale.
Sep 11 2016, 12:19 PM · BF Blender
lucas veber (lucky3) created T49323: Ineffective bone roll calculation with low rig scale.
Sep 11 2016, 12:17 PM · BF Blender

Jul 2 2015

lucas veber (lucky3) added a comment to T45207: Camera actuator shakes with low height.

anyway thanks for the fix.

Jul 2 2015, 5:37 PM · Game Engine
lucas veber (lucky3) added a comment to T45207: Camera actuator shakes with low height.

Sorry building Blender is out of my skills. So i'll wait for the nightly build.

Jul 2 2015, 5:35 PM · Game Engine

Jun 29 2015

lucas veber (lucky3) added a comment to T45207: Camera actuator shakes with low height.

When setting the height value to negative (eg: -3) the camera keeps on shaking, it does not reach stability...

Jun 29 2015, 9:24 AM · Game Engine

Jun 26 2015

lucas veber (lucky3) added a comment to T45207: Camera actuator shakes with low height.

It seems to be linked with the damping factor.
With very low damping values (0.03), no shakes.
But such a damping leads to very slow camera rotation, wich may not be good for the gameplay.

Jun 26 2015, 10:03 PM · Game Engine
lucas veber (lucky3) created T45207: Camera actuator shakes with low height.
Jun 26 2015, 9:58 PM · Game Engine

Jan 17 2015

lucas veber (lucky3) created T43301: fcurve mirror fuction swapped.
Jan 17 2015, 10:06 PM · Animation, BF Blender

Jan 9 2015

lucas veber (lucky3) added a comment to T43188: Armature modifier - Preserve volume + scale = incorrect result.

Bastien, the volume should be proportionnal to the scale, otherwise you can't achieve a complete rig with scalable bone... This is a non-sense!

Jan 9 2015, 8:17 PM · BF Blender
lucas veber (lucky3) created T43188: Armature modifier - Preserve volume + scale = incorrect result.
Jan 9 2015, 7:42 PM · BF Blender