For Blender 2.8 use WeightPaintTools 2.X and draw_weights_2.8
Addon for blender containing tools for simplifying workflow in blender weight paint mode. Useful for riggers, animators and character artist but not only.
- easy menu for applying weights to vertices - with properly working symmetry and auto normalization
- custom weights mirroring for all tools, works even if topology is not symmetrical.
- symmetrize vertex groups that works even if topology is not symmetrical
- easy picking/copying vertex weights, from multiple selected vertices.
- mixing vertex weights - add, replace, multiply weights from one bone to another
- improved smoothing, level weights - with properly working symmetry and auto normalization
- draw gradient with custom gradient falloffs (Ease, linear, Gaussian), and mirroring.
- 'Override from adjacent' - replace broken weights on selected vertices from adjacent geometry.
- Project weights - Project weights from non selected mesh parts to selection
DOCUMENTATION (Blender 2.8)
Video Guide (blender 2.79 but lots of thing are similar in 2.8):
Vodep fpr update 1.5 (blender 2.79):
As a bonus you can also get 'Draw Weights' addon for displaying all vertex groups with different color. It is useful for debugging problems with vertex weights, for example if color of vertex is too dark/bright it means weights assigned to it are not properly normalized (they are too low/ too high).
Update 1.1 (24.08.2018):
- added custom draw gradient tool (defautl hotkey ctrl+D (or from pie: ctrl+X -> Weight Tools -> Draw Gradient) - in weight paint mode when vertex masking is enabled). It has custom gradient profile option, and works with symmetry.
- bugfixes, simpyfing workflow
Update 1.2 (30.08.2018):
- Added "Weight Paint Symmetry" operation that will help you to define symmetrical points on model.https://youtu.be/yO_bpiRPd04
Update 1.3 (07.09.2018):
- Added "Fill Weights" When vertices are not normalized (total sum of weights is below 1) then fill the remaining portion with active vertex group weight until it reaches 100%
- Bugfixes for gradient tool
Update 1.4 (11.09.2018):
- symmetrize - add option (F6) to symmetrize all vert groups for selected vertices.
- Paste weights - make it work with symmetry. So pasting ver weights on right side , will automatically mirror those pasted verts on left.
Update 1.5 (13.10.2018):
- symmetrize - merged into Mirror tool.
- Mirror Tool - added 'All groups' option, to mirror all groups in selection (not just active group).
- Mirror - Project - New tool same as above, but work with meshes that have non symmetrical topology.
- 'Draw Weights' addon - added 'Merge colors' option. With it left and right bones will have same color.
- Video added: https://youtu.be/mN7JYVp1u7k
Update 1.5.2 (18.10.2018):
- paste vert weights on other objects fixed. Now it works based on vert group names, so vert group order dosen't matter.
- add support for r. and l. prefixes
Update 1.6.1 (6.11.2018):
- Most operations are waay faster now (probably between 2x - 10x times)
- Added Lighten mix mode for "Transfer Vertex Weights" operator (get max weight from source and target vert groups)
Update 2.0.3 (for blender 2.8) (27.03.2019)
bug fixes for compatibility with latest daily blender 2.8 builds
added auto-update feature, in addon preferences. When new release is out, you can use auto-update to automatically download and install new version.
Update 2.0.4 (for blender 2.8) (22.05.2019)
- Fixed compatibility with latest blender 2.8 release,
- Fixed gradient tool, mirror project tool.
- improved speed with gradient tool
Update 2.0.5 (for blender 2.8) (26.05.2019)
- Added support for AutoRig Pro plugin,
- Ported 'Draw Weights' addon to blender 2.8
Update 2.0.6 (for blender 2.8) (12.06.2019)
- fix to set weights (cycling through Normalize option, could stuck in one option sometimes)
Update 2.0.7 (for blender 2.8) (22.06.2019)
- added more hotkeys in preferences (so that it can be tweaked to work with Left click keymaps)
- improved drawing in 'Draw Weights' script (draw random color for each vertex group). Now it displays edges and vertices with selection highlight.
Update 2.0.8 (for blender 2.8) (27.06.2019)
- - fixed grow/shrink selection when is modal levels/smooth.
- - Fix undo in modal levels/smooth
Update 2.0.9 (for blender 2.8) (10.08.2019)
- - Added 'Override from adjacent operator
- - bug fixes
Update 2.1.0 (for blender 2.8) (26.08.2019)
- added: add, subtract, replace options to draw gradient.
- fix draw gradient bug
Update 2.1.1 (for blender 2.8) (17.09.2019)
Update 2.1.2 (for blender 2.8) (04.10.2019)
- fix normalize error
- fix mirror error on Autorig skeleton
- added more descriptive warning when operation fails (rather than throwing errors)